Graphic of Speech Bubbles with Air Purifier FAQs TextIf you’re thinking about buying an air purifier then you likely have a lot of questions running through your mind.

You may be wondering about things such as how do air purifiers work, what are they good for, where can you use them, what makes one air purifier better than another, and so on.

While questions like these are common, the answers are not always that easy to find.

For that reason, we decided to compile a list of the most frequently asked questions (FAQs) about air purifiers and put them all together in one convenient guide.

What you’ll find below is every question about air purifiers that people ask along with the simplest answer possible. Each answer is concise, to the point and explained in 50 words or less, so you can discover what you want to know quickly.

FAQ Table of Contents

Find your question below, then click on the link to be taken directly to the answer on the bottom half of this page.

About Air Purifiers

General Use

Specific Uses

Safety and Health

Best Types

Buying an Air Purifier


Are Air Purifiers Effective?

Yes. Air purifiers are effective at eliminating certain airborne pollutants like pollen, dust, bacteria, pet dander, smoke, mold spores, volatile organic compounds and odors. However, each product does have a maximum room size it can handle, so proper sizing is important for your intended use.

See Also: Choosing the Right Size for an Air Purifier


Are Air Purifiers Safe?

Most air purifiers are safe. The only exception is ozone-producing air purifiers, which can irritate allergies, worsen asthma, and cause chest pain, coughing and lung damage. HEPA air purifiers are ozone-free. Ionic air purifiers are also safe and shouldn’t be confused with ozone air cleaners.

See Also: HEPA Air Purifiers and Ionic Air Purifiers


Are Air Purifier Useful?

Yes, air purifiers are useful for cleaning indoor air. Air purifiers remove airborne pollutants that cause allergies, trigger asthma, spread illnesses and produce odors. These devices clean the air around you so that it’s fresh for you to breathe.

See Also: What Do Air Purifiers Do?


Are Air Purifiers Worth the Money?

Air purifiers are worth the money only if you get the one that’s right for your needs. Like any appliance, each air purifier has different uses, options and power outputs. Prices range from $50-800, allowing you to choose one with the right combination of features.

See Also: Are Air Purifiers Worth it?


Are Air Purifiers Good for You?

Yes, air purifiers are good for you. These products improve indoor air quality by removing contaminants from the air, such as dust, smoke, pollen, pet dander, mold spores, bacteria, volatile organic compounds, odor particles and more. Air purifiers help create a healthier environment inside your home or office.

See Also: About Air Purifiers


How Do Air Purifiers Work?

Air purifiers work in one of four ways:

  1. A HEPA Filter traps pollutants from the air like dust, pollen and smoke
  2. A Carbon Filter removes odor causing particles
  3. An Ionizer emits ions into the air to remove contaminants
  4. An Ultraviolet Light destroys bacteria and germs

See Also: Types of Air Purifiers Explained


How Air Purifier is Made?

An air purifier is made with any the following parts: a fan, special filters (i.e. HEPA or Activated Carbon), an ionic generator, ozone generator, ultra violet lighting or PlasmaWave technology. These components are arranged inside a plastic or aluminum casing and used to purify the air from airborne pollutants.


How to Use Air Purifier?

To use an air purifier follow these steps:

  1. Allow it to run 24 hours a day
  2. Keep it in one location
  3. Close all doors and windows in that area
  4. Leave 18-24″ of space around the back and sides of the unit
  5. Check and replace filters regularly

How to Clean an Air Purifier?

To clean an air purifier do the following:

  1. Unplug the power cord
  2. Wipe down the exterior casing
  3. Remove the filter cover
  4. Wash the pre-filter with soap and water
  5. Replace all dirty internal filters
  6. Reassemble filters and cover, and plug power cord back in

How Good is an Air Purifier?

An air purifier is very good at filtering airborne pollutants like dust, allergens, smoke, bacteria, volatile organic compounds, gaseous particles and other microscopic matter. Many air purifiers can remove 99.97% of these contaminants from the air you breathe.


How to Place an Air Purifier?

The best way to place an air purifier is to put it near the center of a room. Give it 18-24″ of clearance around the back and sides of the unit. Do not put it in a corner or under a shelf because this will limit the air flow.


Why Air Purifier is Needed?

An air purifier is needed because indoor air quality is reported to be 2-5 times worse than the air outside (source U.S. EPA.) An air purifier filters out air pollution and replaces it with clean air for you to breathe, which helps improve your overall health.

See Also: Air Quality Facts


Why Air Purifiers are Bad?

Not all air purifiers are bad for you. Only air purifiers that generate ozone are harmful to your health. All other types of air purifiers are good for you and help improve the quality of air inside your home.


Why Use an Air Purifier or Why Buy an Air Purifier?

The advantage of using an air purifier is that it reduces indoor contaminants that cause allergies, respiratory issues and illnesses. Air purifiers also remove dust, get rid of smoke and freshen the air by eliminating odor-causing particles. Some air cleaners also eliminate pet dander and hair too.

See Also: How Air Purifiers Can Help


Why Use an Ionic Air Purifier?

Using an an ionic air purifier has four major benefits:

  1. There are no filters to clean or replace
  2. It removes the finest airborne pollutants, as small as .01 microns
  3. It’s the cheapest type of air purifier you can buy
  4. It has the largest square footage range

See Also: What is an Ionizer?


Why are Ionic Air Purifiers Bad?

People think that ionic air purifiers are bad because they confused them with ozone generators. The two products are not the same. Ionic air purifiers emit negative ions into the air in order to clean it, which can irritate asthma. Ozone generators emit ozone, which is harmful to everyone’s health.

See Also: Best Ionic Air Purifiers


When to Use an Air Purifier?

In communal spaces like a living room you’ll want to use an air purifier 24/7. Running it for a few hours won’t sufficiently clean the air because new pollutants continue to show up. In rooms kept closed like a bedroom you could use it only while it’s being occupied.


When to Buy Air Purifier?

You should buy an air purifier when you’re having any signs of nasal congestion, eye irritation or breathing problems while indoors. It’s also a good time to buy one when you’re noticing dust, smoke, pet dander or odors inside your home. Air purifiers can help with all of those things.

See Also: Top 10 Air Purifiers List


When to Clean Air Purifier?

You should clean an air purifier every three to six months, depending on the amount of use it gets. Most air purifier filters are only good for that amount of time. Some air purifiers have a filter change indicator, which takes the guesswork out of when to clean it.


What is Air Purifier Ionizer?

An air purifier ionizer is a device that emits negative ions into the air as a way to clean it. These ions latch onto positively charged particles like pollen, dust, dander, bacteria, etc. and cause them to become too heavy to stay in the air, which purifies it.

See Also: Air Ionizer Explained


What Air Purifiers Do (What Does Air Purifier Do)?

Air purifiers do one thing – they clean the air around you by removing harmful contaminants. Indoor air is 2-5 times worse than the outdoors and is full of pollutants that cause allergies, trigger asthma, produce odors, spread diseases and more. Air purifiers create a healthier indoor environment.

See Also: How Air Purifiers Work


What Air Purifier to Buy?

Every person should buy an air purifier that meets their specific needs. Air purifiers come in all shapes, sizes, colors, price ranges and can handle various sized rooms. Some air purifiers are better for allergies and others for asthma, pets, smoke, mold and more. A free buyers guide is available.

See Also: Complete Air Purifier Buying Guide


What Air Purifier Do I Need?

You need an air purifier that’s best designed for your intended use. For allergy and asthma relief choose a HEPA air purifier. For mold problems a HEPA, Ultra Violet Light and Carbon Filter combo. For pets a HEPA and Carbon Filter. For smoke a HEPA, Carbon Filter and Ionizer combo.

See Also: Air Purifier Guides for Allergies, Asthma, Dust, Mold, Pets, and Smoke


What Air Purifier is Best for Allergies?

The best air purifier for allergies is one that includes a pre-filter and True HEPA filter. This is the only combination that will trap allergen particles like pollen, pet dander, dust and mold spores. The top two air purifiers recommended by allergists are Honeywell HPA200 and HPA300.

See Also: Allergy Air Purifiers


What Air Purifier is Best for Asthma?

The best air purifier for asthma is one that includes a long-lasting HEPA filter. A HEPA filter captures microscopic particles that trigger asthma symptoms as small as .3 microns in size. The top two air purifiers like this are Rabbit Air MinusA2 and Blueair 203W.

See Also: Asthma Air Purifiers


What Air Purifier is Best for Mold?

The best air purifier for mold is one that includes a combo of a True HEPA filter (traps mold spores), Ultra Violet Light (destroys mold DNA) and an Activated Carbon Filter (removes mold odors). The top two air purifiers with these features are SilverOnyx and GermGuardian AC5000E.

See Also: Mold Air Purifiers


What Air Purifier is Best for Pet Hair?

The best air purifier for pet hair includes a True HEPA or HEPA-type filter. Pet hair is 50 microns in size and these filters capture particles as small as 0.3 to 2 microns. The top two air purifiers are Winix WAC9500 and Hamilton Beach TrueAir Compact Pet Air Purifier.

See Also: Pet Air Purifiers


What Air Purifier is Best for Smoke?

The best air purifier for smoke includes a True HEPA filter and Activated Carbon filter. The True HEPA filter captures 99.97% of visible smoke particles and the Activated Carbon filter eliminates tobacco odors. The two best air purifiers are Rabbit Air MinusA2 and Austin Air HealthMate HM400.

See Also: Smoke Air Purifiers


What Air Purifier Removes Smoke?

An air purifier with a True HEPA filter removes visible smoke, while an air purifier with an Activated Carbon filter gets rid of smoke odors. It’s best to get a device that includes both of these filters if you want to clear up smoke from tobacco, cooking or fires.

See Also: Smoke Air Purifiers


What Air Purifier is the Best?

There are several air purifiers that are best for home use. The top five include:

  1. Rabbit Air MinusA2
  2. Honeywell HPA300
  3. Winix PlasmaWave 5500
  4. Airmega 300S
  5. Hamilton Beach TrueAir Compact Air Purifier

View more products on our Top 10 List.

See Also: Top 10 Air Purifiers List


What Air Purifier to Choose?

You should choose an air purifier that meets your wants and needs. Each air purifier is designed to tackle certain home contaminants. Some products fight dust and allergens, others remove smoke and odors, some eliminate mold, and others reduce pet dander and hair. Combination of each also exist.

See Also: How to Choose an Air Purifier


What Brand Air Purifier is the Best?

There are several air purifier brands that are considered the best in the industry. These include:

  1. Rabbit Air
  2. Winix
  3. Hamilton Beach
  4. O-ION
  5. Airmega
  6. GermGuardian
  7. Honywell
  8. Best Choice Products
  9. Airfree
  10. Envion

What’s HEPA Air Purifier?

A HEPA air purifier is one that uses a High-Efficiency Particulate Air (HEPA) filter. HEPA air purifiers are considered the best type because they can trap 99.97% of harmful particles as small as .3 microns, including pollen, pet dander, dust, mold spores and tobacco smoke.

See Also: HEPA Air Purifiers Explained


What is an Air Purifier and Does it Work?

An air purifier is a device that cleans the air inside a room by removing harmful contaminants. Every home has airborne toxins that can lead to serious health problems. An air purifier is the only device that does work to get rid of these unsafe particles from your airspace.

See Also: Everything About Air Purifiers


Which Air Purifier to Buy?

It’s best to buy an air purifier which fulfills your greatest need. Each brand of air purifier is built to handle a specific problem. For example, some work best for allergies, others for asthma, viruses, smoke, odors, pets, mold and more. View our free guide for helpful buying tips.

See Also: Buyers Guide for Air Purifiers


Which Air Purifier Best Buy?

There are three air purifiers which are consider the best buy:

  1. Rabbit Air MinusA2 (most powerful and highest rated)
  2. O-ION B-1000 (cheapest and kills viruses)
  3. Honeywell QuietClean Tower HFD-120Q (uses a permanent washable filter – zero maintenance costs)

See Also: Top 10 Air Purifiers List and Air Purifiers with Permanent Filters


Where to Buy Air Purifier?

You can buy an air purifier from home goods stores such as Walmart, Target, Lowes and Home Depot. You can also buy one directly from the manufacturer. However, the best place to buy an air purifier is from Amazon.com because of their lowest prices and easy return policy.

See Also: Air Purifier Options and Features


Where to Place Air Purifier?

You should place an air purifier where it’s most needed inside your home. Top places include: living room, bedroom, office and basement. Air purifiers can only clean adjacent rooms not separated by a door or wall. If you want to purify multiple rooms, consider buying more than one.

See Also: How to Choose the Right Size for an Air Purifier


Where to Use Air Purifier?

The best places for where to use an air purifier are in the living room, bedroom, kitchen, office and basement. These are the places people spend the majority of their time indoors. Therefore, you want these locations to have the cleanest air possible.


Where to Rent Air Purifier?

Not many places rent air purifiers because they’re so inexpensive to buy. If you do find a rental location, it often only has a commercial grade air cleaner that’s made for large jobs such as mold remediation. For home use, it’s most economical to buy your own air purifier.

See Also: How to Choose the Right Air Purifier


Can Air Purifier Help Allergies?

Yes, an air purifier can help with allergies. Just make sure that it uses a HEPA filter, which is the best kind for removing airborne allergen particles.

See Also: Allergy Air Purifiers


Can Air Purifier Remove Formaldehyde?

Yes, an air purifier can remove formaldehyde. Just make sure that it has an Activated Carbon filter, which is the only kind that can remove Volatile Organic Compounds (VOCs) like formaldehyde.

See Also: Activated Carbon Filters Explained


Can Air Purifier Remove Smoke?

Yes, an air purifier can remove smoke from tobacco, cooking and fires. You’ll need to make sure that it has a HEPA filter to get rid of visible smoke particles and an Activated Carbon filter to eliminate the smoke odor.

See Also: Smoke Air Purifiers


Can Air Purifier Remove Mold?

Yes, an air purifier can remove mold. However, it must include a HEPA filter which traps mold spores and prevents them from reentering the room. Two other nice features to have are an Activated Carbon filter to eliminate mold odors and a germicidal UV-C light to stop spore reproduction.

See Also: Mold Air Purifiers


Can Air Purifier Remove Virus?

Yes, an air purifier can remove viruses. The best devices include a germicidal UV-C light which kills viruses in the air by destroying their DNA structure. A HEPA filter is second best because it traps virus particles inside a filter and stops them from reentering the airspace.

See Also: What is an Ultra Violet Light Used for?


Can Air Purifier Help Asthma?

Yes, an air purifier can help with asthma. If you are asthmatic, you’ll want an air purifier with a HEPA filter which removes particles and allergens from the air that can trigger symptoms. Never use an ionic air purifier because it can make your asthma worse.

See Also: Asthma Air Purifiers


Can Air Purifier Cause Cancer?

No, an air purifier does not cause cancer. It’s quite the opposite, actually. Air purifiers remove pollutants that are known to cause cancer from long term exposure like vehicle exhaust, coal emissions, chemical agents, gases and bacteria.


Can Air Purifier Remove Dust?

Yes, an air purifier can remove dust. To be effective against dust the air purifier must have a HEPA filter. This filter removes microscopic particles that form dust before it has time to settle on surfaces. Rooms that have an air purifier don’t need to be cleaned as much.

See Also: Dust Air Purifiers


Can Air Purifier Cause Headaches?

An air purifier does not cause headaches. Headaches are often caused by sinus pressure, allergies, inhaling chemical fumes or odors to which a person is sensitive. On the contrary, air purifiers remove particles from the air that cause headaches, making them a great investment for people prone to this issue.


Can Air Purifier Remove Smell and Odors?

Yes, an air purifier can remove smells but only if it has a certain type of filter. Make sure that the air purifier you buy includes an Activated Carbon filter, which is designed especially to absorb smells and odors.

See Also: Do Air Purifiers Remove Odors?


Can Air Purifier Remove Pollution?

Yes, an air purifier is specially designed to remove pollution. No other device is equivalent for cleaning the air. Air purifiers remove harmful particles from the air and improve your air quality. Many products have a 99.97% effective rate at removing pollutants.

See Also: ACH and CADR Ratings Explained


Can Air Purifier Cause Sore Throat?

No, an air purifier does not cause a sore throat. The most common cause of sore throats are bacteria and viruses. An air purifier can help prevent a sore throat by removing these types of contaminants from the air and sterilizing the air you breathe.


Can Air Purifier Remove Asbestos?

Yes, an air purifier can remove asbestos as long as it has a HEPA filter. Asbestos particles range from 0.7 to 90 microns in size. HEPA filters capture over 99% of particles above 0.3 microns, which includes asbestos.


Can Air Purifier Make You Sick?

No, an air purifier cannot make you sick. Air purifiers actually help prevent sickness. These devices remove contaminants from the air that cause illnesses and diseases such as bacteria, mold, viruses and volatile organic compounds. People who use air purifiers at home tend to remain healthier.


Can Air Purifier Help with Smoke?

Yes, an air purifier can help with smoke. To get rid of visible smoke the air purifier must have a HEPA filter. To get rid of smoke odors it will need to have an Activated Carbon filter. Our free guide can help you find a product that fits this need.

See Also: Smoke Air Purifiers


Can Air Purifier Remove Cigarette Smoke?

Yes, an air purifier can remove cigarette smoke. Cigarette smoke ranges between 0.3 to 1 micron in size. Air purifiers with a HEPA filter can eliminate 99% of particles as small as 0.3 microns, which includes cigarette smoke.

See Also: Smoke Air Purifiers


Will Air Purifier Help with Dust Mites?

Yes, an air purifier will help with dust mites. Air purifiers reduce dust, which is the main food source for dust mites. The less dust inside your home, the less dust mites you will have. The best type of air purifier for dust mites is one with a HEPA filter.

See Also: How to Get Rid of Dust Mites


Will Air Purifier Help with Dog Hair?

Yes, an air purifier will help with dog hair as long as it has a HEPA filter. Air purifiers of this kind use a fan to pull air in from around the room and dog hair will get collected inside the filter.

See Also: Pet Air Purifiers


Will Air Purifier Help with Dog Smell?

Yes, an air purifier will help with dog smell if it has an Activated Carbon filter. This is the only type of filter that can absorb dog smells and helps a room smell fresh and clean.

See Also: Pet Air Purifiers


Will Air Purifier Help with Cat Smell?

Yes, an air purifier will help with cat smell as long as it includes an Activated Carbon filter. This type of filter is highly absorbent of particles that cause odors. Air purifiers of this kind are great at eliminating strong smells from cats and litter boxes.

See Also: Pet Air Purifiers


Will Air Purifier Help with COPD?

Yes, an air purifier can help with COPD. Air purifiers make it easier for people with COPD to breathe by removing airborne contaminants that irritate the lungs. It’s important to only use a device with a HEPA filter. Don’t use an ionizer since these emit ions that can trigger COPD exacerbations.


Will Air Purifier Help with Fire Smoke?

Yes, an air purifier can help with fire smoke if it has a HEPA filter. Fire smoke consists of soot, fine ash, volatile organic compounds, air toxics and other very small particles, which a HEPA air purifier is designed to eliminate.

See Also: HEPA Filters Explained


Will Air Purifier Help with Sore Throat?

An air purifier will not make a sore throat go away. Sore throats occur from viral infections. However, an air purifier can remove viruses from the air that do cause sore throats. Using a device like this inside your home can help prevent illnesses from spreading.


Will Air Purifier Remove Musty Smell?

Yes, an air purifier will remove a musty smell if it includes an Activated Carbon filter. This special filter absorbs particles that cause musty odors such as mold and mildew.

See Also: What is an Activated Carbon Filter?