Best Air Purifiers and Ion Generators for Small to Large Spaces | Reviews | Buying Guide | Comparisons

Best Air Purifiers

The crisp invigorating clean fresh air of the mountains where the cool waterfalls and mountain creeks take your breath away with their beauty and purity. We all wish we could live in an environment like this, and some do. The Colorado mountains are another peaceful and quiet place of magnificence, splendor, and clean air. 

Unless you live in a pristine area much to yourself, you like everyone else will benefit from one of the top best air purifiers expertly evaluated in this buying guide with product reviews.

For an environment free of allergens, dust, mold and mold spores, mildew, pet dander, and tobacco smoke, learn more about your health with the different types of air purifiers at affordable prices. If you need a humidifier, see those here. Or, if there’s too much humidity in your home, a dehumidifier will take care of that.

All air purifiers remove musky smells, cigar and tobacco odors, fishy dinner odors, pet dander, dust mites, pollen, allergens, and fungi. Some are specifically made to remove harmful gases, volatile organic compounds (VOCs) and even fumes from your indoor air.

Uses and Benefits of Air Purifiers—FAQs

Sysptoms of Indoor Air Pollution

Dust, pollen, pet dander, mold spores, and dust mite feces can behave as allergens triggering reactions in sensitive people. Smoke particles and VOCs can cause a risk to health. Exposure to various components such as VOCs increases the likelihood of experiencing symptoms of the sick building condition.

Energy Star® certified dehumidifierTo rid your home of contamination and pollutants, the small electrical air purifier appliance will improve your air quality quickly. The air will be cleaner, not feel as oppressive, dust will be gone, and everyone will breathe better.

Energy Star® certified air purifiers will save you money on your electric bill. We all like to save energy not only for us, but for everyone else to have that energy to use as well.

Different Air Purifier Types

First, filters will be discussed. This is an important consideration when buying an air purifier to keep your air clean.

Grille-style air cleaners use filters made of fiberglass, cotton, foam, or synthetic fibers. The compactness of the fiber used will control the particle size passing through it. Thick dense filter material seize super small particulates in the air. Pleated filters have an increased surface area to take hold of particles. Some filters can be washed and some must be replaced.

Charcoal and HEPA Filters

Charcoal and HEPA Filters

Activated Charcoal Filters (black picture) are used as an adsorption (not absorption) material for capturing fumes, odors, dust, pollutants, smoke, and chemicals in your air. Activated charcoal is porous with tiny areas to catch molecules passing into it. Large particles stick to the numerous pores in the charcoal.

These two words are different by only one letter but can be difficult to understand.

Absorption happens when atoms pass through or enter a bulky material like sponges.

Adsorption happens when the atoms settle or accumulate on the surface of a material rather than literally entering or diffusing into that same material.

HEPA (High Efficiency Particulate Air) (white picture above) filters remove particles to comply with the US Department of Energy (DOE) regulations. Any material can be used for the filter but it must meet the standard of 0.03% for particles 0.3 micrometers in size and larger. Airflow is specific for penetrating the filter. HEPA filters are used in high-end vacuums and other devices using filters for home or industrial use.

UV Light Air Purifiers

Airborne bacteria, viruses, and mold spores pass through the UV (ultraviolet) light that cleans the air when the microbes pass through the light source in the unit killing them so that they cannot reproduce thus, causing no harm.
Ionizing Air Purifiers

Ionizing Air Purifiers

This type air purifier uses a corona discharge that creates negatively charged ion molecules. The large particles and dust are the easiest to be ionized because being larger they pass through the coronal discharge effortlessly.

One metal plate in the purifier is charged with negative ions and the other metal plate is charged with positive ions. These attract the particles when the plates have opposing charges. They cluster together becoming heavier to settle in the air and attach inside the air purifier.

Ozone Generating Air Purifiers

Ozone generating air purifiers

Ozone generating air purifiers are similar to ionizers in that they change the oxygen molecules into ozone.

These molecules have three oxygen atoms. In nature, the atmosphere is dioxygen that is made of two oxygen atoms. Exposed to UV light or a corona discharge, some of the molecules split into free oxygen atoms. Some of the atoms make ozone yet most of the oxygen combines again into dioxygen. These are safe to use when you follow the manufacturer’s instructions.

Ozone is a toxic gas that is not a stable molecule and can react with other chemicals in the air making new compounds that can be more unsafe than the ozone. Manufacturers of ozone devices state that ozone disinfects the air, provides health benefits, and deodorizes the air. 

Why Use Air Purifiers?

An air purifier or air cleaner removes contaminants from the air in a room. When you want to breathe clean air, an air purifier is safe to use with no side effects. Using them liberates you from dusting and vacuuming pet dander and other indoor particles frequently as well.

Where Can I Use an Air Purifier?

An air purifier can be used anywhere in your home. I like mine in the room I spend the most time. You can purchase several for endless air purification in other rooms as well. When you have a finished basement and spend time there, an air purifier will be an added bonus for clean air.

If your basement is unfinished and smells musky having mold, an air cleaner is a must to remove that odor.

The Best Air Purifiers

For allergies, asthma, dust, mold spores, pet dander, viruses, bacteria, tobacco smoke, and more pollutants, the best air purifiers are reviewed for your consideration.

Timer modes provide convenience and digital controls are easy to read and some units are available with hand-held remote control units.

Features to Consider When Buying an Air Purifier

Where to use Air Purifiers

1. Clean Air Delivery Rate

Clean Air Delivery Rate (CADR) is the amount of filtered air volume returned to the air after being filtered by the air purifier. Three measurements are specified for dust, tobacco smoke, and pollen. The greater the CADR number the higher the air purifier is filtering your inside air.

AHAM CertificateMany brands of air purifiers will have this seal. The acronym AHAM means Association of Home Appliance Manufacturers with the certified Clean Air Delivery Rate (CADR) logo type. The testing certification is used for rating air purifiers by the Consumer Union for its publication of Consumer Reports. This test and certification is recognized by the American National Standards Institute, ANSI.

2. What is the Clean Air Delivery Rate?

CADR was established in the early 1980s and AHAM in 1967. CADR shows the rate of pollutants and contaminates reduced in a testing chamber. This test determines the air purifier’s capability for removing certain particulates in a controlled chamber and it is measured for its ability to remove 0.10 to 11 microns from the air for pollen, dust, and smoke.

Outcomes Information

  • Size of the particle eliminated
  • Percentage of particles eliminated
  • Actual air volume moving through the unit

Three Sizes for Particles Tested

  • Pollen: 5.0 to 11.0 microns
  • Cigarette Smoke: 0.10 to 1.0 microns
  • Fine Dust: 0.5 to 3.0 microns

Particle percentages are converted to numerical rates ranging from 0 to 400 for smoke and 0 to 450 for pollen and dust.

Interpretation for Air Purifier Efficiency

The test gives you comparison numbers to determine the performance of air purifiers. It shows an overall performance of the filtering system as well to help you determine how large of a unit you will need for your space.

3. Area Coverage

It is problematic to purify air in large areas if you purchase an air purifier that is too small. When a unit is too small, the air purification will not be completed to your satisfaction and you will be wasting your money. Always buy an air purifier to clean the air using square feet for your area.

To determine the square footage of the area, multiply the length by the width of the room. A room that is 12 x 14-feet = 168-square feet. Purchase a unit that is not more than 67% of the room size you want the air purifier to clean.

If your room is 168-square feet, 67% of that is 113-square feet. You will have more air changes per hour (ACH) from your unit so do the math. Do not purchase a unit that only delivers 2 air changes each hour. Allergy sufferers like to have 5 or more air changes each hour.

There is no one air purifier that is better than another. You will need to identify the type you want, the features, and whether it has a remote control, and if it works for your square footage for the area you want to cover.

4. Noise Level Compared to Other Sounds

Most manufacturers of air purifiers indicate the decibel (dB) level for each fan speed. This comparison might help you understand the dB rating better for air purifiers.

Common Indoor Outdoor Noise Levels

Each person perceives sound differently. Sound levels (acoustics) can be affected by sound traps such as drapes, carpet, upholstered furniture and be quieter. Sound will reflect when there are no soft surfaces to absorb the sound vibration. Your distance from the unit will change the sound; the speed will change the decibels. The faster (higher) it runs the louder it will be since it is running faster to push more air. The lower the fan, the lower the noise level.

5. Filter Reset

Check your manufacturer’s manual for the filter reset button location and how to use it.

6. Asthma and Allergy Responsive

More than 60 million of Americans suffer from asthma, allergies, COPD, and other respiratory issues. Today, you can purchase an air purifiers made with specific filter functions with the best being True-HEPA filters to remove pollutants in your home where you spend most of your time.

7. Airflow Rate (CFM)

Airflow rate is a critical consideration when purchasing an air purifier. Airflow is measured in CFM (cubic feet per minute). Air is a gas and it can be calculated by its mass or volume. The air cleaner manufacturer’s describe airflow in volume. Airflow is contingent on two aspects: the built-in fan and the filter’s efficiency.

8. Air Changes per Hour (ACH)

Air Changes per Hour (ACH) lets you know the number of times the air is replaced in an hour. The higher the number the better the air purifier. The number can fluctuate between 1 and 7. The higher the number the more the efficiency. If your home has contaminants, it is best that the unit is capable of handling 2 or more air changes each hour.

Be sure when researching different models for how many air changes the unit performs each hour. Some of the air purifiers are less expensive and are most efficient when the fan is running full power and that causes noise. With more high-end models, the number of air changes will be greater with lower fan settings.

9. Service Indicator Light

There is no actual service to be done for an air purifier. A long-life LED (light emitting diode) or LCD (liquid crystal diode) indicator light will illuminate when it is time to change the filters. Some air purifier models will provide electronic readouts with built-in timers to indicate the length of time its filters will last.

10. Dust Sensor and Air-Quality Monitor

Dust sensors—detect particle concentration in the air by using optical sensing devices. The dust sensor detects very small particles such as cigarette smoke from larger particles such as dust.

Air quality monitors—use technology and engineering that allows monitoring of indoor air quality with an LCD screen that provides small and large particle counts with a dynamic bar graph showing actual count readings.

Best Affordable Air Purifiers for Bedrooms, Small Spaces, Large Rooms, Pets, Smoke, Allergies, and Asthma

1. Levoit® Compact Air Purifier with True-HEPA Filter, Small AreaLEVOIT LV-H132 Air Purifier

The Levoit® air purifier, model LV-H132, is affordable so you can have one for each room and the office too shown on®. This air purifier is a best brand choice air purifier bar none. Using this model myself, I found that my stuffy sinuses, sneezing, and runny nose were helped in the summertime when allergens from trees and grass are high.

I put it on the nightstand by my bed when sleeping, turn off the night light, and fall asleep with its whisper-quiet fan at 5.50 dB (decibels).

A breath of fresh air does not come in an aerosol can or plug-in device. Those are chemical fake smells that give people allergic reactions as well. What I’m talking about is pure and fresh unadulterated air without anything more.

LEVOIT LV-H132 Air Purifier Black ColorIt is available in black and either color will match your décor.

The Levoit® air purifier uses 3 filters to remove smells, allergens, and dust particles. and will cover an 86-square foot area. Put it in your bedroom, family room, or anyplace you want the purist air you can breathe.

The air purifier is an ionizer not an ozone generator so will not harm birds. An ionizer purifies the air by introducing negative ions while an ozone generator produces ozone which is O3 versus O2 that is oxygen. An ozone generator removes smells and replaces the air with that typical ozone smell just like when lightning strikes nearby and it doesn’t do that. Ozone sometimes smells like chlorine or bleach.

The True-HEPA filter removes 99.97% of particulates, odors, bacteria, mold spores, pet dander, dust, and allergens that induce allergies in the air. It removes impurities and particles as tiny as 0.3 µm (microns). A human hair is 50 µm. That’s impressive for particle removal with filtering air pollution rate of 2.5 PM (particulate matter).

The unit comes with 3 filters:

LEVOIT LV-H132 Air Purifier with 3 Filters

  • The prefilter is a fine weave of material next to the True-HEPA filter for removing pet dander, bacteria, mold, and fungus.
  • The True-HEPA filter is in the middle for controlling dust, dust mites, pollen, and larger particles.
  • The end filter is the activated carbon filter that removes stale tobacco, cooking and doggy odors.

With the unit, you will receive all 3 filters.

Levoit® Replacement Filters LV-H132-RF are available on® and should be changed approximately every 6-months. Use only the Levoit® replacement filters to keep product performance and the Warranty made for this air purifier. Cheap imitation products will not work.

Note: It’s very important to remove the plastic wrap from each filter or the unit will overpower and not function damaging the unit.

LEVOIT LV-H132 Air Purifier with True Hepa Filter

The CADR (Clean Air Delivery Rate) is 40 CFM (cubic feet per minute). The air purifier removes bacteria, mold spores, dust, dust mites, fungus, large particles, and pollen. It is superior for babies, youngsters, elders, and everyone. This is an air purifier, not a humidifier, and not a diffuser. It does not use water and does not use essential oils.

LEVOIT LV-H132 Air Purifier Settings

It has 3 speed settings of low, medium, and high with options for numerous conditions. It’s equipped with nightlight functions with 2 brightness settings. The lights can be turned off completely if you like that best.

Carefully remove the new 3-stage filters from their plastic packaging and place them into the unit. The activated carbon filter (black) should be installed first, followed by the True-HEPA filter (white), then the preliminary filter (black). Make sure the pull tabs are facing outward.

The Levoit® unit will not compete with furniture. It’s shorter and smaller than a chair with a tremendous ability to not be in the way of your fresh air. Put it on your coffee table, side table, fireplace mantle, or on the floor.

Plug the UL® listed cord into a North American 110/120-Volt, 50/60 Hz outlet. For those in other countries, you will have to buy a 220/240-Volt adapter to run the unit. The power is 28-Watts.

The dimensions are 14.6-inches tall x 9.8-inches across and weighs about 3-pounds.

Gift-wrapping is available for those you love worried about their air quality. You will receive a User’s Manual, the 3 filters, and a 2-year Warranty with free lifetime support for any questions or concerns you might have. It is made in China.

Levoit® LV-H132 Air Purifier with True-HEPA Filter review video.

2. Levoit® True-HEPA Air Purifier, Large Rooms

LEVOIT LV-PUR131 Air Purifier

The Levoit® model LV-PUR131 on® is a best-selling unit that covers 322-square feet rooms. It’s portable to move from one place to another and does a remarkable job removing pet odors, cooking smells, tobacco smoke, and musky smells from your basement.

The white color square design will go anywhere and harmonize with your décor.

LEVOIT LV-PUR131 Air Purifier with True HEPA Filter

The LV-PUR131 removes 99.97% of dust, pollen, mold spores, pet dander and odors. The filters will capture particles as tiny as 0.3 microns.

It will filter pollutants in the air at 2.5 PM (particulate matter). Particulate matter is also called particle pollution, and can be a combination of exceedingly tiny particles and liquid droplets floating about in your air. The PM is not a pollution rate but the size of the particles established by the EPA (USA Environmental Protection Agency. The term fine particles, or particulate matter 2.5 (PM 2.5), refers to tiny particles or droplets in the air that are 2.5 microns or less in width.

The air purifier is great for babies, kids, elders, pets, and anyone wanting to breathe fresh clean air.

The timer can be set from 1- to 12-hours.

The 3 separate filters of activated carbon, pre-filter, and True-HEPA filter to confine air pollutants are shown below:

LEVOIT Air Purifier with True HEPA Filter

Install the filters as shown in the graph above. Be sure to remove the plastic covering for the filters before installing or the unit will not work or could be ruined.

The CADR (clean air delivery rate) is 135+ CFM (cubic feet per minute). Relieve sinus and nasal congestion when using this air purifier

It is not Energy Star® rated because it would not be relevant for this product. It draws 0.10 Amps on low (12-Watts), and 0.42 Amps on high (50-Watts), so the power requirements are very low.

Use the LED control panel for activating the sensor for monitoring your air quality. It’s easy to do and don’t forget to set your fan speed to low, medium, or high. It has an air quality indicator and the lights are color coded. Set the time from 1- to 12-hours to shut off automatically.

You will sleep peacefully with the quietness of this unit. Put the sleep mode to the lowest setting for fresh air with no noise sleeping. The noise level is 52 dB.

The air purifier is 100% ozone-free and does not use UV lights and is not an ionizer. Never worry about your pet birds—they are safe and will breathe better as you do with this unit.

It is recommended you use genuine Levoit® filters. Other filters will be the same size, but not made of the same component materials as the authentic Levoit® keeping up the impressive performance and not voiding your Warranty. You can buy them on Amazon every 6-months using Replacement Filters LV-H131-RF.

The Levoit® is CE and FCC approved and certified.

Plug the UL® listed cord into a North American 110/120-Volt, 50/60 Hz outlet. Those in other countries will need to buy a 220/240-Volt adapter.

The power draw is 0.10-Amps on low (12-Watts), and 0.42-Amps on high (50-Watts). Rated power is 40-Watts and standby power is less than 0.8-Watts

The dimensions are 18.5-inches high x 14.5-inches wide x 7.25-inches front to back and weighs about 10-pounds.

Gift-wrapping is available for those you love, elders, those with respiratory issues and dear friends. You will receive the air purifier, the 3 separate air filters, and a 2-year Warranty with lifetime support from Levoit®. It is made in China.

Levoit® LV-PUR131 Air Purifier with HEPA Filter video.

3. Pure Enrichment® PureZone 3-in-1 True-HEPA Air Purifier, Large Rooms

Pure Enrichment® PureZone 3-in-1 True-HEPA Air Purifier

The Pure Enrichment® PureZone model number PEAIRPLG is an excellent air purifier to have and is a best-selling unit on®. Whether you have it in your home, child’s room, or at the office, it does what it says it will do. The coverage space is up to 200-square feet and even more. My family room is 300-square feet and it works great in that room.

The PureZone True-HEPA filters are 3-in-1 meaning you will have the pre-filter, the activated carbon filter, and the True-HEPA filter as one filter unit rather than the typical 3 separate filters. That means when it’s time to change them, you only have to deal with 1 filter unit. You will have the filter indicator to let you know when it’s time to change the 1 filter of 3 different filters. This 1-filter system is truly convenient.

PureZone 3-in-1 True HEPA Air PurifierThe filtering system not only disinfects and decontaminates your area in just a few hours making your air more wholesome to breathe, it runs quietly to not interfere with what you are listening to at less than 30 dB (decibels) on low, at 40 dB on medium, and at 50 dB high. A whisper is 30 dB, 40 dB is a computer, and 50 dB is most newer refrigerators.

The filters will remove up to 99.97% of particulates as small as 0.3 microns in your air especially wonderful for those with allergies, asthma, COPD, and other respiratory problems. Particulates are the particles of dust, pollen, pet dander, smoke, mold spores, germs, bacteria, and household odors. It will also get rid of the musky odor often reeking in basements in humid climates.

You will like the 3 different speeds for the fan of low, medium, and high with an automatic timer that you set. The unit will shut off automatically after the hours you set it to run at 2-, 4-, or 8-hours of continuous operation.

It’s just a foot tall and will fit into all areas without being a bulky item to hide. The natural color will harmonize with your design scheme and be lovely to have around.

The UV-C air sanitizer is UV for ultra violet and the ‘C’ means the LED (light emitting diodes) for air treatment applications where the characteristics of UV-C LEDs can give unique solutions for disinfection. The UV feature can be turned off. The purifier does not emit ozone. It uses UV-C light to purify the air.

There are small blue LED lights for functions on the top panel.

The CADR (clean air delivery rate) is 30 CFM (cubic feet per minute). The UV wavelength is 254 nm (nanometers) and the lamp life is approximately 20,000 hours—that’s 833 days running non-stop for 24-hours each day, or about 27 months. It is not Energy Star® rated.

The dimensions are 12.1-inches tall x 10.8-inches wide x 6.9-inches front to back and weighs about 8-pounds.

Plug the UL® listed cord into a North American 110/120-Volt, 50/60 Hz outlet. The output power is 60-Watts. Those in other countries will need to buy a 220/240-Volt adapter.

It will set up in 5-minutes out of the box. New filters can be bought at Amazon here.

The User’s Manual says you can wash the filter. A new 3-in-1 filter is under $20 lasting 6-months or more depending on how long you use the unit.

Gift-wrapping is available for those you love, elders, and those with respiratory issues. You will receive the air purifier, the 3-in-1 True-HEPA filter, and 5-year Warranty with 100% satisfaction guaranteed to you. It is made in China.

Pure Enrichment® PureZone 3-in-1 Air Purifier review video.

4. Guardian Technologies by GermGuardian® Air Cleaning System, Small-Medium Rooms

GermGuardian AC4900CA 3-in-1 Air Purifier

The Guardian Technologies True-HEPA filter with UV-C (ultraviolet) sanitizer and odor reduction is a top seller on®. The model number AC4900CA is a 22-inch tower that is attractive for any home environment and is doctor recommended. It comes in black and is made of hard durable plastic.

Energy Star® certified dehumidifierIt is Energy Star® certified to save electrical energy costs and covers 155-square feet.

The 3-in-1 True-HEPA Air Purifier is perfect for allergy sufferers. With its True-HEPA filter, it captures 99.97% of dust and allergens as small as 0.3 microns in size.

GermGuardian AC4900CA 3-in-1 Air Purifier with True HEPA Filter

According to the American Academy of Pediatric Allergy and Immunology, doctors recommend HEPA air filtration to reduce exposure to indoor asthma triggers. More than just a filter, the UV-C light kills bacteria and germs, while the charcoal filter captures odors.

UV (ultraviolet) + C is a shorter wavelength that is germicidal and absorbed by the ozone layer and atmosphere. [100-289 nm, 4.43–12.4, 0.710–1.987 photon energy (eV, aJ).] UV-C light is highly effective at penetrating thin-walled germs like viruses and bacteria altering the genetic structure of the germs, and they die.

GermGuardian AC4900CA Air Purifier For Bedroom

The unit is CADR (Clean Air Delivery Rate) at 101+, is lightweight and ideal to use in small- to medium-sized rooms. The unit includes a UV-C control and a filter change indicator. The 3-speed controls include an ultra-quiet low speed. There is no timer on this unit.

The 3-in-1 filtering system uses the pre-filter that catches the large dust particulates, lint, and pet hair. The charcoal filter is an added layer of protection for capturing odors. The True-HEPA filter captures dust mites, mold spores, pollen, and pet dander. The anti-microbial agent is added to the pre-filter to stop the growth of bacteria causing household odor and fungi growth at the filter’s surface area.

No Ozone Air PurifierWith its titanium dioxide activated by the UV-C light, it kills airborne germs such as flu, rhinovirus, staph, and pneumonia. The remaining household odor molecules are decomposed caused by cooking, smoke, and pets. It does not produce ozone. It does not have an ionizer and uses UV light to kill germs.

The unit comes with red and/or blue indicator LCD lights that blink when first turned on. When the unit is on, the light is red. It will blink when it is time to replace the filter or UV-C bulb. If and when the lights blink, hold the UV button for 3- to 5-seconds to reset the system until the lights stop flashing. Now it will run properly. There is no remote control unit.

Replace the filter every 6- to 8-months depending on how much you use the unit. Replacement filter is filter B – Model FLT4825 (ASIN B0055521W0). To lengthen the life of your filter, a 4 pack of the carbon filters is also available – Model FLT22CB4 (ASIN B017ANUVC6) on Amazon. Use only genuine Guardian Technologies filters for best performance.

The filter turns from white to dark gray or black when it is time to replace it. The air blows out of the right side when facing the front. The 3 fan speeds are low, medium, and high and the unit can run 24/7.

One complete filter system is included with the unit. The filters are not washable. Replacement filters must be genuine Guardian Technologies® for maintaining product performance and Warranty. On the top of the unit is a small hole. After replacing the True-HEPA filter, insert a pen tip into the ‘HEPA reset’ located on the top panel of the unit.

The dimensions are 27.75-feet tall x 7.125-feet wide and 8.875-feet deep and it weighs 9.65-pounds.

California residents click here for Proposition 65 warning.

Plug the UL® listed 6-foot long cord into a North American 110/120-Volt, 50/60 Hz outlet. The power is 55-Watts. The bulb is 5-Watts. Those in other countries will need to buy a 220/240-Volt adapter to use it.

You will receive an Instruction Manual, filters, and a 3-year Limited Warranty. It is made in China.

GermGuardian® AC4900CA 3-in-1 True-HEPA Air Purifier video.

5. Coway Mighty Air Purifier, Large Rooms

Coway AP-1512HH Mighty Air Purifier with True HEPA and Eco Mode

Energy Star® certified dehumidifierThe Coway Company is a Republic of Korea firm that makes the Energy Star® certified model AP-1512HH on®. It is a best-selling unit in black or white robust plastic that traps up to 99.97% of airborne allergens that are 0.3 microns and larger in size with its True-HEPA filter.

The pollutants pass through the filters such as mold spores, pollen, smoke, pet dander, and dust. The unit will cover 528-square feet.

AHAM CertificateThe True-HEPA filter, Association of Home Appliance Manufacturers (AHAM) clean air delivery rate (CADR) smoke is 233, dust is 246, and pollen is 240 for clean breathing air. The Coway has a pre-filter, odor filter, True-HEPA filter, and vital ionizer that can be turned off.

The filters are not washable; simply vacuum off the dust.

The air purifier has 3 fan speed levels with auto and economy modes. The timer can be set for 1-, 4-, and 8-hours. It has a filter indicator light for when it’s time to change the filter. An air quality indicator is also a feature. The eco mode lets you save money on your electrical bill.

Coway AP-1512HH Mighty Air Purifier

The airflow rate is 268 CFM (cubic-feet per minute) or 7.6 CMM (cubic-meters per minute).

The noise level is 24.4 to 53.8 dB depending on the fan speed. The lower the speed, the lower the dB.

The Coway pulls air in from the front, blows it out the top behind and a little below the top controls.

Plug the UL listed 6.3-foot long cord into a North American 110/120-Volt, 50/60 Hz outlet. The power is 14.9- to 77.8-Watts depending on fan speed at 1.0-Amps. Those in other countries will need to buy a 220/240-Volt adapter to use it.

California residents click here for Proposition 65 warning.

The dimensions are 18.3-inches tall x 16.8-inches wide x 9.5-inches deep and weighs about 12.3-pounds.

You will receive a User’s Manual and a 3-year Limited Warranty. The unit is designed in South Korea and made in China.

Coway AP-1512HH Mighty Air Purifier Review Video.

6. AIRMEGA Smarter App Enabled Air Purifier Compatible with Alexa, Large Rooms

AIRMEGA 400S The Smarter App Enabled Air Purifier

The AIRMEGA by Coway, model 400S in white, is also available in graphite (black) and will cover 1560-square feet and more. The item model number 111012 shown on® is one of the best air purifiers on the market today. It is an air purifier with Alexa app.

The Smart mode of auto speed, eco, and sleep works with Amazon® Alexa for tech savvy individuals. The app is enabled for iOS and Android to report and monitor speed control, real-time indoor air quality, outdoor air monitoring, filter life-time monitoring, scheduling, and more.

It works on Android 4 or later; on Samsung Galaxy S4; S5; S6; Galaxy Note 4; or Google Nexus 5.

AIRMEGA Smarter App Enabled Air Purifier Compatible with AlexaThe Wi-Fi router uses 2 frequency bands of 2.4 and 5 GHz, and the Wi-Fi security should be set to one of the following options: Open, WEP, WPA, WPAAES, WPA2AES, WPA2TKIP, and WPA2.

The AIRMEGA uses a high-tech BLDC motor (brushless DC).

The filter lifetime indicator shows 2 air changes per hour for 1560-square feet and 4 air changes per hour for 780-square feet.

The Coway AIRMEGA can change room air up to 2 times per hour, removing 99.97% of pollutants of particles 0.3 microns in size. Be rid of musky smells, cigar and tobacco odors, fishy dinner odors, pet dander, dust mites, pollen, allergens, fungi, and remove harmful gases, volatile organic compounds (VOCs) and odors from your indoor air.AIRMEGA Smarter App Enabled Air Purifier with Carbon Filter

There are 0.75-pounds for one filter for a total of 1.5-pounds of actual carbon chips for both in the honeycomb filters. The unit works with a washable pre-filter and a carbon filter.

The unit comes with 2 washable filters and 2 MAX2 HEPA filters. All 4 have to be used together. The unit does not produce ozone.

If on low it is quiet for sleep. However, if you leave it on auto it will be in the variable speed depending on the air quality. The noise level is from 22 through 52 dB.

The 3 fan speeds are sleep, low, medium, and high. The timer can be set from 1-, 2-, 4-, and 8-hours.

The dimensions are 22.8-inches tall x 14.8-inches wide x 14.8-inches deep and weighs 24.7-pounds.

California residents click here for Proposition 65 warning.

Plug the UL® listed cord into a North American 110/120-Volt outlet. For those in other countries, you will have to buy a 220/240-Volt adapter to run the unit. The power is 66-Watts.

You will receive a User’s Manual and filters. It comes with a 5-year Warranty and is designed in South Korea and made in China.

Highly recommended AIRMEGA 400S The Smarter App Enabled Air Purifier video.

7. Rabbit Air® BioGS® 2.0 Ultra Quiet HEPA Air Purifier, Small-Medium Rooms

Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier (SPA-550A)

The Rabbit Air® BioGS® 2.0, item model number SPA-550A on® is a white model and it comes in other colors as well. It comes with a handheld remote control for your convenience in operating.

Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air PurifierThis unit will filter your 550-square foot room 2 times an hour on the highest setting for normal home use.

For those with allergies, it will cover 275-square feet with 4 air changes per hour

The HEPA filter gives you 4 phases of purifying and deodorizing and it traps airborne particles down to 0.3 microns in size, 99.97% of the time, and reduces common allergens to support optimum filter efficiency and prolong filter life.

The prefilter is washable. The unit is Energy Star® certified to keep your electric bills lower.

You are covered for all these allergens including the spores created by active ugly mold:

Rabbit Air BioGS 2.0 HEPA Air Purifier

The activated carbon filters with charcoal will last up to 3-years using the unit 12-hours each day. The CADR is: 189 pollen, 165 dust, and 152 smoke.

The air blows out the top back of the air purifier. There is no air conditioning feature, so the air is not cold.

Rabbit Air BioGS 2.0 Air Purifier Filters

The noise level is from 22.8 to 48.6 dB for a quiet night’s sleep. Turn the negative ion generator on or off for the way you want it.

The brushless DC (BLDC) motor is extra quiet with 5 different speeds and is practically silent at the low speed setting. Brushless motors are more efficient.


Rabbit Air® BioGS® 2.0 Ultra Quiet HEPA Air PurifierPlug the UL® listed cord into a North American 110/120-Volt, 50/60 Hz outlet. For those in other countries, you will have to buy a 220/240-Volt adapter to run the unit. The power consumption is 5- to 29-Watts.

Filters for the BioGS® SPA-550A can be purchased on Amazon. The filter replacement kit includes one (1) BioGS® HEPA filter and one (1) charcoal-based activated carbon filter for the BioGS® 2.0 Ultra Quiet Air Purifier.

BioGS® Air PurifierYou will receive in the box with your BioGS® Air Purifier the Remote Control, Starter Guide for Filter Installation, User’s Manual, Pre-Filter, BioGS® HEPA Filter, and Activated Charcoal Filter.

You will have free returns and shipping within the 48 contiguous states, a 90-day money-back Guarantee, 5-year Warranty, and 24/7 technical support. It is made in South Korea.

BioGS® 2.0 Auto Mode from Rabbit Air® manufacturer video.

Rabbit Air® BioGS® 2.0 – Review and Features video.

8. Honeywell® True-HEPA Air Purifier, Large Rooms

Honeywell True HEPA Allergen Remover, 465 sq. Ft, HPA300

Energy Star® certified dehumidifierThe Honeywell® True-HEPA allergen remover air purifier, model HPA300 is Energy Star® certified to cover 21- x 22-feet or 465-square feet a best allergen remover air purifier shown on®.

The unit is black and traps up to 99.97% of airborne allergens such as smoke, pollen, dust, mold spores, and pet dander that are 0.3 microns and larger passing through the filters. The air intake is at the front and clean air discharges from the top. This helps those with sinusitis, allergies, respiratory issues and more.

How big a micron is

You will have 4 air cleaning modes of general cleaning of the air, germs, allergens, and turbo. It automatically shuts off after setting the timer from 2-, 4-, or 8-hours. By default, the unit timer can be left on to run 24/7.

The Honeywell® air purifier is the number one system endorsed by 7 out of 10 medical doctors and allergists for treating allergies and asthma. Using its mechanical filtration method, the fan draws the micron sized particles in your air forcing the air through the True-HEPA filter where the air is cleaned and circulated back clean into your room up to 5 times each hour.

The activated carbon pre-filter decreases odor combined with the True-HEPA filter for keeping your house free of foul smells, volatile organic compounds (VOCs), bacteria, viruses, and allergens.

The control panel has a check filters and check pre-filter buttons along with a light button to dim the light. There is no remote control unit with the product.

Honeywell True HEPA Allergen Remover HPA300

The Honeywell® replacement True-HEPA is HRF-R1 (1 pack), HRF-R2 (2-pack), HRF-R3 (3 pack). The Odor Reducing pre-filter is HRF-AP1, and the Odor and Gas Reducing pre-filter is HRF-APP1. It requires 3 True-HEPA filters that should be replaced once each year.

Honeywell HPA300 True HEPA Allergen RemoverThe pre-filter is good for 3-months and the main filters last 1-year and cannot be washed.

The filtration system does not produce negative ions so no ozone goes into your environment. There is no UV light in this air purifier. Therefore, anyone with breathing conditions such as COPD, emphysema, and asthma will feel better.

The unit is rated dust at 320 for the AHAM and CADR testing standard, tobacco smoke 300, and pollen 300. CADR is the volume of air filter by the unit and the higher the numbers the faster the air is filtered.

AHAM CertificateHoneywell® meets the industry’s precise regulations for Clean Air Delivery Rate (CADR) Performance and the Association of Home Appliance Manufacturers (AHAM) for clean air compliance.

The dimensions are 20.8-inches wide x 10.83-inches deep x 22.38-inches tall and it weighs about 20-pounds.

Plug the UL listed 6.3-foot long cord into a North American 110/120-Volt, 50/60 Hz receptacle. The power is 132-Watts at the highest fan setting at 1.10-Amps. (Watts = Volts 120 x Amps 1.10). Those in other countries will need to buy a 220/240-Volt adapter to use it.

A complete set of filters is included in the box. You will receive a User’s Manual and 5-year Limited Warranty from Kaz USA, Inc. shown in the manual with your Honeywell® air purifier. It is made in China.

Honeywell® True-HEPA Large Room Air Purifier video.

9. WINIX PlasmaWave True-HEPA Air Cleaner, Large Rooms

Winix WAC9500 Ultimate Pet True HEPA Air Cleaner with PlasmaWave Technology

The WINIX is a South Korean manufacturer in business for over 40 years with a corporate office in East Dundee, Illinois. They are a leader in clean air technology for the home with their premium air cleaners.

The model WAC9500 on® offers 99.97% efficiency with its True-HEPA filter, odor control carbon pre-filters, and PlasmaWave Technology that generates both positive and negative ions to create plasma clusters that instantly neutralize viruses, bacteria, chemical vapors, and odors.

Winix WAC9500 Ultimate Pet True HEPA Air Cleaner 5 stages Filter

The light can be changed from bright to dim if you don’t like lights on at night when sleeping.

WINIX calls this unit the “pet series” yet it removes pet dander as well as allergens, cooking odors, tobacco smoke, dust, mold and mold spores, mildew, and more for allergy and asthma sufferers. It has smart sensors for particles and VOCs.

AHAM CertificateThe unit covers a 284-square foot large room area using the AHAM CADR room size rating. It is ideal for a family room or large bedrooms.

The unit is UL® (Underwriters Lab®) and ARB (Air Resources Board) certified. The AHAM (Association of Home Appliance Manufacturers) CADR (Clean Air Delivery Rate) values for dust are 182, pollen 194, and smoke 183.

The CFM from low, medium, high and turbo are 182, 194, and 183 (cubic feet per minute).

Energy Star® certified dehumidifierThe WINIX is Energy Star® certified. The color for the body is gray and the sides are white to harmonize with your home décor.

The unit breaks apart odors, allergens, chemical vapors, and other pollutants at the molecular level without producing any harmful ozone. The WINIX PlasmaWave uses a corona discharge purifier that creates ozone, but since the ozone emitted is less than 0.05 ppm regulated by the EPA, these devices are marketed as emitting no ozone. You can turn the PlasmaWave feature off.

The washable advanced odor control carbon filtration, anti-microbial hair collecting pre-filter, and PlasmaWave technology work together to provide top-quality control of pet dander and odors, as well as other household odors and allergens such as pollen, mold spores, and smoke particles.

The electronic display is digital and there is a remote control included using 2 each AA batteries, included.

The unit has 3 smart sensors for you to set and forget about it, 4 fan speeds, and an auto mode and sleep mode. It has 5 stages of air cleaning and an air quality and light sensor.

The pre-filter is washable and the advanced odor control (AOC) carbon filter is washable as well. The True-HEPA filters are not washable and must be replaced. The unit has a replacement filter light to let you know when filters need replacing. The replacement filters are available on Amazon.

The dimensions are 21.9-inches tall x 16.5-inches wide x 9.9-inches deep and weighs 18.8-pounds.

Plug the UL® listed 3-prong grounded 6-foot long cord into a North American 110/120-Volt, 50/60 Hz outlet. Those in other countries will need to buy a 220/240-Volt adapter to use it. The power consumption is 6- to 70-watts on low/turbo mode.

Gift-wrapping is available. The unit comes with an extra charcoal filter, remote control, a User’s Manual, and a 1-year Warranty. It is made in South Korea.

WINIX PlasmaWave 9500 Pet Air Purifier Review video.

10. Mammie Mac Biota Bot True-HEPA Air Purifier, Large Rooms

Biota Bot Model #MM208 Air Purifier

The Biota Bot, Model MM208 on®, is a 7-stage air purifier that eliminates cigarette/cigar smoke as all air purifiers do along with dust, pet odors and dander, and the smoke from wood burning stoves or fireplaces.

Founded in Lincoln, Nebraska, USA, the MAMIE MAC Corporation has been making the highest-rated products in the market place for the best air purifier for removing cigarette smoke covering a large 430-square feet.

Its 7 stages of purification for its air cleaning system with the True-HEPA, activated carbon filters with ultraviolet (UV) sterilizing function wins over many buyers.

The prefilter collects the dense large particles like pet dander, hair, dust mites, and dust and can be vacuumed and washed.

With the True-HEPA filter that captures airborne allergens, pollen, mold spores, and textile fibers, you will breathe cleaner air immediately. The purification rate (PM) is 2.5. The True-HEPA filter can also be vacuumed.

Mammie Mac Biota Bot True-HEPA Air PurifierThe activated carbon charcoal filter removes odors from cooking, pets, cleaning products, and smoke to include formaldehyde, benzene, and xylene.

The UV sterilizing function destroys a variety of bacteria keeping you from microbes and bacteria.

The Anion feature is an ionizer that produces 10 million negative ions per second and can be shut off.

The sound is quiet at less than 60 dB.

The Air Quality sensor tells you how the air is around the unit indicated by the 3 colors of red, purple, and blues. The unit can run on auto mode and sleep mode.

You can run the machine manually on three different fan speeds or use the timer that gives you the option to cycle it on 1-, 2-, 4-, and 8-hour increments. It can be set on auto mode and the filter replacement light tells you when it’s time to replace filters or clean.

Replace the filters every 6- to 12-months or 2800 operating hours for the best air quality air purifier. The air enters from the sides not directly from the front.

Mammie Mac Biota Bot Air Purifier

The dimensions are 21.75-inches tall x 13-inches wide x 7-inches deep.

Plug the UL® listed 3-prong grounded cord into a North American 110/120-Volt, 50/60 Hz receptacle. The power is 45-Watts. For those in other countries, you will need to buy a 220/240-Volt adapter.

Gift-wrapping is available. You will receive a User’s Manual and an industry-leading 3-year Limited Warranty. It is made in China.

11. Envion® Ionic Pro® Turbo Air Purifier, Medium to Large Rooms

Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier

The Envion® Ionic Pro® Turbo Air Purifier, model 90IP01TA01-W is a best-selling ion turbo air purifier for home and office use on®.

It comes in black, is a tall tower design that takes up very little space to cover a 500-square feet area. A turbo unit is totally silent and annihilates germs and odor in the air in less than 1-hour removing 99.9% of allergens, pollutants, tobacco smoke, cooking and doggy odors, and irritants.

It will destroy cold and flu viruses, staph and strep bacteria, and mold spores. When damp places create mold, you will have that musky odor that it removes.

It then emits purified refreshing air. There are no costly filters to replace.

The front-loading collection blade makes clean-up a breeze and you’ll never have to replace a filter because it doesn’t use filters.

You can clean them with a damp cloth or use canned air the same as for electronic devices such as a computer keyboard.

It uses high voltage between a wire and blades to charge the air particles between them to make them flow making it an ionizer but at a very low level. It is an ionizer purifier, but it is not an ozone machine.

The Panel of Envion Ionic Pro Turbo Ionic Air PurifierThe panel on top emits a sound and a light to let you know to clean the unit about every 2-weeks.

The dimensions are 28-inches tall x 8-inches wide x 5.5-inches deep.

Plug the UL® listed 3-prong grounded cord into a North American 110/120-Volt, 50/60 Hz receptacle. For those in other countries, you will need to buy a 220/240-Volt adapter.

The power is 12-Watts and you can run it 24/7. It is energy efficient like 3-Christmas tree size night light bulbs.

You will receive a User’s Manual and it is made in China.

Envion® Ionic Pro® Turbo Air Purifier review video.

12. Blueair Blue Pure Air Purifier, Large Rooms

Blue Pure 211+ Air Purifier 3 Stage Filters

The Blue Pure by Blueair 211+ is for large rooms item model number 211PACF100711 shown on® in amazing colors. It is a best air purifier for medium to large rooms.

The 211+ is the upgraded model of the previous 211 having a metal housing now. It does not have an ionizer.

It is a one-button operation with 3 stages of filtering to include 2 washable prefilters, particle, and carbon filter. It does not use HEPA filters that capture 99.97% or charcoal filters.

Blue Pure 211+ Air Purifier 3 Stage Filters

Energy Star® certified dehumidifierThe unit captures 99% of 2.5 PM pollutants like allergens, dust, tobacco smoke, pet odors, mold spores, pet dander, and dust mites. It is Energy Star® certified for saving money on your electric bill. It is 350 CFM for dust, pollen, and smoke.

With the activated carbon filter for removing customary everyday odors such as cooking, smoking, and pets, it will be ideal for dorm rooms and VOCs.

Dust and pet hair is confined to the washable prefilter that collects larger particles. Grey and dark blue prefilters are included and you can purchase other colors separately. This will have the unit matching or harmonizing any décor.

Blue Pure 211+ Air Purifier Removes 99% of Particles

AHAM Certificate

It operates at a quiet noise level and it will cover medium to large rooms between 400- and 600-square feet. It is AHAM (Association of Home Appliance Manufacturers) rated at 540-square feet. Put one in your family room, living room, bedroom, or office.

All filters are recyclable and it’s recommended you replace them every 6-months depending on use. The orange light will remind you.

The sound level is between 31 to 56 dB contingent on the fan speed you set it for. The lower the fan speed, the less noise.

Blue Pure 211+ Air Purifier with 360-degree air intake What I appreciate is the 360-degree air intake from all around the unit. It cleans the air 5 times each hour too. It does not have a timer; just push the button for the hours you want it to run.

The unit measures 21-inches tall x 13-inches wide x 13-inches deep and weighs 13-pounds.

Plug the UL® listed 3-prong grounded cord into a North American 110/120-Volt, 50/60 Hz receptacle. For those in other countries, you will need to buy a 220/240-Volt adapter.

The power is 61-Watts on high and you can run it 24/7 to keep your air clean and fresh. The 211+ is 30- to 61-Watts on a 110-120-Volt motor. The Amps will be 0.27- to 0.55.

You will receive the User’s Manual and a 1-year Warranty. The company headquarters is in Sweden and the parts are made in China.

Blue Pure 211+ Air Purifier review video.

Blue Pure 211+ Air Purifier review – My Allergies are Finally Gone!—video.

13. IQAir® HealthPro® Series, Large Rooms

IQAir HealthPro Plus Air Purifier

The IQAir® HealthPro® 250 shown on®, ASIN B002VXDCHW, sells as one of the best air purifiers. It is a top choice for allergies and asthma sufferers. The unit is attractive in white to fit your office or home décor. It is not Energy Star® certified using only 48-Watts power.

Filter the air down to 0.003 microns filtering 99.5% of the air you breathe. This unit uses the HyperHEPA® filtration up to 100 times more effective than standard HEPA filters. All 3 filters are included with the air purifier lasting a longer time.

The LED display will indicate 4 stages of the filter life-cycle. It has a timer and comes with a remote control.

Move it around easily with its 4 caster wheels and it covers 900-square feet of space.

The room air enters the unit from the bottom, so if sitting on carpet, be sure the wheels are on. The clean air exits the top and sides. The powerful fan gives you 41% more clean air.

The fan operates at 2750 RPMs with steel ball bearings to outlast other fans.

It ranges from 40 CFM at low all the way up to 300 CFM and will do 4 air changes per hour at 900-square feet. CADR is unknown from this company.

The unit measures 30.5-inches tall x 15-inches wide x 16-inches deep and weighs 29-pounds with the filters installed.

Plug the UL® listed 3-prong grounded cord into a North American 110/120-Volt, 50/60 Hz receptacle. For those in other countries, you will need to buy a 220/240-Volt adapter.

Fan speeds: speed 1: 27-Watts; speed 2: 53-Watts; speed 3: 92-Watts; speed 4: 121-Watts; speed 5: 154-Watts; and speed 6: 215-Watts; with standby mode: less than 1-Watt.

You will receive all filters, User’s Manual and a 5-year Warranty. It is Swiss made using Swiss parts.

Effectiveness of IQHealth® video.

IQAir® HealthPro® Engineering International video.

14. Green Air® Deluxe Air Purifier Ozone Generator, Extra-Large Rooms

Green Air Deluxe 3 Plate HEPA and Odor Fighting Filter Alpine Air Purifier Ozone Generator

The Green Air® 3 plate HEPA and odor fighting filter alpine is a top seller on® for an affordable air purifier ozone generator. This unit, model number GAD500, covers up to 3500-square feet and is priced lower than some of the medium-sized room units.

This is the newest unit from Green Air® for 2018 with 3 ozone plates that you can turn off for having the maximum odor, mold, and mildew control.

The 2 timers can be set for on/off and times of your choice. You will have a separate timer for the ozone function with the remote control or the control panel on the front.

The quadruple filter system is a huge plus containing 1 mesh dust filter, 1 HEPA filter for allergens, 1 carbon filter for odors, and 1 PCO (photocatalytic oxidation) filter for germs, an emerging technology in the HVAC industry.

It also has a superior UV (ultraviolet) lamp for sterilization that can be turned on or off.

With its quadruple (4) washable filters, the air purifier sucks in unclean air from the back passing it through the prefilter, HEPA filter, activated carbon filter to control odor, and then the PCO filter.

The filters seize contaminants in the air as small as 0.2 microns. This is the only company I know of that uses 4 filters.

The anion emitters are now in the front of the fan at the front panel. Anion is an atom or molecule that has a non-zero net electrical charge; its total number of electrons is not equal to its total number of protons. A cation is a positively-charged ion, while an anion is a negatively-charged ion. Because of their opposite electric charges, cations and anions attract each other and readily form ionic compounds.

The emitters release trillions of negative irons into your home. They attach to dust particles and drop down to the floor.

This functions to eliminate dust, pet dander, and other debris that falls to the floor or stays in the air. What’s left is fresh oxygen air to breathe.

It works by creating oxygen (O2) with 1 more molecule (ozone O3) in the levels that will be effective for your square-footage space. The activated oxygen (ozone) will sanitize pollution embedded in walls, ceilings, floors, carpets, furniture, clothing, countertops, and all surfaces in your home. Use ozone when the property is unoccupied with the built in timer. Ozone returns to oxygen after about 30- to 45-minutes.

Eliminate tobacco smoke odors, cooking odors, chemical/cleaning agent odors, paint odors, and more for a space no one is living in. The building or house will then be fresh with clean air.

Do not stay in the space when the unit is working; ozone can damage the respiratory system. It can be used in basements and garages as well.

The maximum O3 output is 1080 mg/hr. You have the option to use 1, 2, or 3 ozone plates at a time at 360 mg/hr per plate.

The unit measures 12-7/8-inches tall x 8-7/8-inches wide x 9-3/4-inches deep and weighs 13-pounds.

Plug the UL® listed 3-prong grounded cord into a North American 110/120-Volt, 50/60 Hz receptacle. The power is 48-Watts. For those in other countries, you will need to buy a 220/240-Volt adapter.

This unit does not meet California requirements and cannot be shipped to California.

Gift-wrapping is available and you will get a User’s Manual, remote control, and a 2-year Warranty. It is made in China.

15. Enerzen Commercial Ozone Generator

Enerzen Commercial Ozone Generator Industrial O3 Air Purifier

The Enerzen is not a typical air purifier unit. It is an advanced portable air purification system for industrial/commercial use and can be used in homes following the instructions very carefully. It is an ozone O3 air purifier deodorizer sterilizer. It produces 6000 mg/hr ozone output and covers 4000-square feet.

The model number O-777 on® is a best selling ozone generator available by the best manufacturer.

The large fan covers more square-feet to sterilize. There are no filters to clean and it’s portable. Use in in your home, office, car, boat, anywhere to eliminate odor and mold.

It removes cigar/cigarette smoke and pet odors. Even more, it eliminates paint fumes, chemical cleaning fumes, paint fumes, odors, dust, water damage, smoke damage, cooking odors and airborne irritants. It can retard mold, mildew, and fungus growth, but know that many mold spores will hide behind drywall and other areas that you cannot see.

The housing is made of industrial-grade steel to help keep the unit clean for many years.

How to use an Ozone Generator

The timer is a new and improved design for you to control the length of time needed.

The Dimensions are 6.75-tall x 8-inches wide x 5.75-inches deep.

Replacement plates can be purchased on Amazon for this model.

Replacement Ceramic Ozone Plate part for Enerzen Ozone Generator O-555 and O-777 Models by O-ION.

All ozone generators require an ozone plate or cartridge in order to work. Ozone (activated oxygen, O3) is created when voltage is applied to the ozone plate/cartridge to create a corona discharge.

This corona discharge reacts with the oxygen (O2) present in the ozone generator chamber and elements in the ceramic plate to create ozone. Over time these elements in the ceramic plate will exhaust themselves and less ozone will be created. Each plate is rated to last approximately 5000+ hours.

Plug the UL® listed 3-prong grounded 5-foot long cord into a North American 110/120-Volt, 50/60 Hz receptacle. The power is 60-Watts. Those in other countries will need to buy a 220/240-Volt adapter to use it.

Read your Owner’s Manual for safety information, how to use in cars, and more.

Amazon’s customer reviews with questions and answers are extremely helpful for this unit.

Gift-wrapping is available. You will receive the unit with A/C cord. Your satisfaction is guaranteed with a 30-day unconditional replacement or refund if you are not satisfied. The Factory Warranty is 3-years. It is made in China.

IMPORTANT!—Is an ozone generator safe? Rules for proper use video!

Tips Using Air Purifiers

Extension cord for Air PurifierAll about extension cords is on Wikipedia here. It is critically important to have the correct AWG (American Wire Gauge) for the length of extension cord to use with the air purifier you buy.

Be sure to click on the yellow extension cord in the picture to the right to read and learn about the NEMA numbers on Wikipedia if you don’t already know.

If you use a thin extension cord that you use for your electric lamp with 2-prongs, you’ll burn out the motor. Remember, the longer the cord the larger the gauge needed.

Room Size

Consider Room size when buying Air PurifierYou will need to know your room size where you plan to use your air purifier. Check the square-footage coverage from the manufacturer.

You will want a unit that filters the air several times each hour with 2 or more air changes each hour.

The graphic shows a room 20 x 13 feet = 260-square feet. Use this formula to calculate your area for square footage.

For considering other rooms into your square footage configuration, see the second box.

The equations are for 8-foot room ceilings.

Remove Plastic Wrap from New Filters Inside Unit

After you get your air purifier, remove the plastic wrapper from the filters inside or not installed when received or you will ruin the unit and void your Warranty.

The first time you use the unit, the residual pollution in the room will be at its maximum. You want to clean the area by at least 80%. When you reach that level, the unit will not need to do as many air changes to keep the air clean and fresh.

Write the date on the outside edge of your new filters. I find calendars don’t work well.

Airflow Path

Portable Air PurifierBe sure to put your air purifier in a place for good airflow. You don’t want the flow direction to be impeded by arches, half-walls, counter bars, columns, or large furniture, or half-closed doors.

Without the air flowing freely, you will block the air and the unit will not function as it is designed to do.

Don’t Block Airflow

Portable units are lightweight with carrying handles and some with caster wheels while others sit on 4 feet.

Where to place Air Purifier

Put them in an open area and not flush against a wall or door. Your instruction manual will explain it and all models will vary.

Do not place them behind the sofa, recliner, under shelves, under a table, or in a corner.

The air intake must be able to get the room air to clean it and the air exhaust must have space to emit the clean air. It’s common sense.

The air purifier must have space around all four sides and the top. The bottom needs space when sitting on thick carpet.

Keep it a few feet away from objects for optimal efficiency. Some air intakes are near the top, in the front, or on the sides. You don’t want the output air blowing on the underside of a table or the back of your sofa.

You choose where you want it to be: at the side of your sofa, on a table top, near a doorway, in the kitchen, bathroom, basement, garage, or the office. Take it with you if your business is a massage studio or physical therapy room.

Air purifiers work well in hair and nail salons for ridding the area of chemical smells in the waiting area.

How to place Air Purifier

Keep Purifier Area Clean

Your air purifier will function much better when the area it sits in is clean being free of dust, pet hair piling up, and other debris. It will not need to work as hard and puts out clean purified air better. Dusting furniture and vacuuming floors will help its overall performance. I know of no one who lets their home look like this; totally disgusting.Keep Your Home Clean

Changing Filters

Changing filters Air PurifierAlways have the air purifier turned off and unplugged before cleaning or changing the filters. Changing the filters is the most important thing you can do for a fully operational air purifier.

The filters can be accessed easily. Be sure you check how it’s done in your instructions.

Always install filters using the arrow to go into the unit for airflow.

Disposable Filters Cannot Be Cleaned

Disposable Filters There are no units in our reviews about disposable air filters being used in any of the brands listed and reviewed. The brands shown use activated charcoal and HEPA filters that must be replaced. These can be vacuumed but not washed.

To get a filter wet invites mold and bacteria unless it’s made specifically for washing. It’s best to not buy a disposable filter type air purifier. Items 6, 8, 10, and 13 above use washable filters but not the disposable kind.

Cleaning the Inside

Clean inside Air PurifierAfter removing the filters, some of the framework and parts can be vacuumed and washed with a damp cotton cloth. The grille can be vacuumed or brushed clean with an old toothbrush and wiped down with a damp cloth.

Paper towels are not recommended because they tear off into cracks and sharp places. You will see a lot of dust inside and might need a flashlight to see all the areas well.

Cleaning the Fan

Clean the Fan in Air PurifierAir purifier fans get just as dirty as a ceiling fan, car fans, and computer fans. They too need to be cleaned of dust and particles sticking to the edges and the blades themselves.

You must have a clean fan for it to run sufficiently and smoothly to clean the air. Use a small vacuum and a damp wet cotton cloth to remove the dust and particles.

Cleaning the Housing

Cleaning the housing Air PurifierThe housing is the box or frame that holds all the parts inside the unit. Cleaning the outside and inside is important for the best airflow function.

Clean the ventilation grille, ports, or holes of any dust blockage. The air intake grille must be cleaned for the fan to function properly for air output or it will burn out the motor from heat overload. You will find pet hair, dust, and other small particles to remove on all areas.

Noise Level

Noise Level for Air PurifierFor running the air purifier while you sleep you will want a quiet fan. Noise is measured in dB (decibels). A unit with 35 dB is the sound of a human whisper, so it is very quiet.

Larger units for 600- to 800-square foot coverage, will be quieter than a unit covering 200-square feet and it will do a better job as a whole. It will make less noise since the filters are bigger to absorb some of the sound, plus running on a lower speed saves on your electrical energy bill.

Service Indicator Light

There is no actual service to be done for an air purifier. The only service for the unit is maintenance routinely. A long-life LED or LCD indicator light will illuminate when it is time to change the filters on most models.

Some air purifier models will provide electronic readouts with built-in timers to indicate the length of time filters will last.

Air Purifiers Do Not Use Essential Oils or Water

Air purifiers take air in and send clean air out. They hold no water! Therefore, they do not function as a humidifier or essential oil diffuser.

If you want a small humidifier that uses essential oils check out this one with an essential oil tray. Or, try using a diffuser with essential oils or without oils to be a small humidifier with only water added.

See diffuser and humidifier differences here.

Diffusers will cover a small local area and provide benefits with aromatherapy when using 100% pure essential oils. You can run an air purifier, humidifier, dehumidifier, air conditioner, furnace, and an essential oil diffuser at the same time.

Final Thoughts

A larger portable air purifier gives the best results for managing the pollutants in the air successfully with less noise. If this will not work for you for your objective it might be better to to use several smaller units for your intention.

I hope the data has been helpful and welcome your comments and/or questions below. Happy shopping for the best air purifier for life!

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