What Do Air Purifiers Actually Do? How to choose a good air purifier!

What Air Purifiers Do

Air purifiers are appliances that clean the air inside a building by removing dust, pollen and other allergens. If you have allergies or asthma, an air purifier may help you breathe easier by reducing the amount of irritants in your environment. Employees who work with chemicals or in dusty environments can also benefit from this type of technology because it removes toxic particles from the air.

In this article we will go over how these devices work to improve indoor air quality and answer some of your questions about whether they're worth investing in.

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What Air Purifiers Actually Do

Air purifiers work by using a negative-ion generator and electrostatic air filter to attract and trap particles in the air. The machine then releases negative ions to neutralize these particles. Since negative ions have a greater tendency to attract other particles, you see a reduction in airborne particulate matter.

In addition, ions can capture airborne bacteria that exceeds its normal residence time in the air, making it easier for you to breathe. The filter captures carbon dioxide and other volatile gases as well as toxic chemicals (such as asbestos), so your environment is cleaner without any odor or chemical residue. With all of these benefits, you may wonder why people have never heard of these devices before.

What are Air purifiers?

Air purifiers may be the best investment you can make to improve your indoor air quality. An air purifier that removes particles, pollutants and odors will come in handy at home, at work and in public places.

Air purifiers are not only a health benefit; they also cut down on energy costs by reducing the need for air conditioning and ventilation systems. And with an average lifespan of 10 years, an air purifier is one of the most likely investments you can make that will pay off big time in the long run.

In short, getting an air purifier could be one of the best investments you will ever make.

What are the benefits of using air purifiers?

The benefits of using an air purifier are clear, effective and immediate. They come with many advantages, but let's look at some of the key benefits:

  • Air purifiers remove odors and particles in your air to keep you healthy.
  • Air purifiers can improve indoor air quality by removing mold spores, bacteria, viruses and other airborne contaminants that cause eye, nose and throat irritations.
  • Air purifiers can reduce airborne particulates in the environment which can lead to various respiratory problems including asthma, sinusitis or any other type of inflammation that occurs in the lungs.
  • Air purifiers are cost effective and save you money in the long term. They can reduce expenses related to air conditioning, ventilation systems and cleaning products.

People say that air purifiers are a waste of money, is this true?

No, air purifiers are a great investment and can help you breathe easier. You don't have to be a health nut to feel the benefits of an air purifier.

Air purifiers have been around for decades, but just recently they've become more popular with consumers and air quality experts alike. Air purifiers are effective at removing airborne contaminants such as pollen, mold spores and bacteria.

Most people believe that it's hard to get rid of particular odors or particulates without using chemicals or devices like ionizers, which aren't effective in eliminating airborne pollutants.

What evidence do people have about air purifiers?

The effectiveness of air purifiers is evident, because they have been used for years in offices and hospitals. It is believed that the effectiveness of air purifiers has more to do with negative ions generated by the machines than the filtration process. These ions are able to attract particulates floating in the air, and neutralize them by reducing their charge and binding them to dust particles.

The air purifier market is worth hundreds of millions of dollars, why?

Air purifier market is worth millions of dollars, because air purifiers are used in many areas of business and industry where there is a lot of dust and airborne particulates. For people who work in dust-filled environments (like construction workers or ship captains), an air purifier can be a life saver.

The market value for air purifiers has risen quickly in the last couple of years, but experts say it will continue to grow at a faster rate as the use of air purifiers becomes more popular among consumers.

It cleans and sanitizes the air

Air purifiers use a mechanical process to remove airborne contaminants by drawing air in through an air intake and causing the air to pass through a filter system. Dust, pollen, molds and other irritants are removed via ionization or electrostatic charge of the filter.

Air purifiers usually operate at an optimum level or in some cases at least one full setting above this optimum. For example, if your home doesn't have an air purifier it may be too clean getting all of the beneficial health benefits from it.

It's the best way to combat airborne allergens and bacteria

Air purifiers are a necessity in an allergy prone home or when one of the family has asthma or other breathing difficulties. This is because air purifiers offer a way to remove dust mites, pet dander and other allergens that often get trapped in the air and on walls of homes and buildings.

With an air purifier, you can breath easier by reducing airborne irritants that cause allergies. Many people use air purifiers in their homes, especially if they are sensitive to dust or other airborne contaminants.

It's the only way to remove odors from the air

Air purifiers can be very effective at removing odors from the air, especially for people who have small children or pets. A good air purifier can remove even the strongest odors, such as that of cigarette smoke or fish and garlic.

It's a home care solution that is a must-have for your indoor health

A home air purifier should be considered a standard necessity by anyone that wants to prevent the occurrence of colds and other breathing conditions that are commonly associated with poor indoor air quality.

When you breath in the air, dust particles in the air enter in to your nose and throat

Air purifiers are used in a variety of environments where air quality is a high concern. Most people who use them have been advised by their doctor to do so because of some sort of breathing problem or respiratory condition. However, many people don't notice that they could benefit from using an air purifier until they experience one of the above conditions.

An air purifier can be a lifesaver for someone who has asthma, allergies or other breathing problems. It can help them to breath easier, lose less sleep and avoid certain triggers that lead to respiratory problems.

It's an effective way to reduce the risks of allergies or asthma attacks in children or adults

A very well known medical fact is that some people are more sensitive to airborne contaminants like dust, allergens and pollen than others. This can lead to a variety of breathing problems including asthma and allergies such as hay fever.

It is better to have a filter that cleans the air of pollen and mold spores

If you are allergic to dust, mold spores and airborne irritants then a filter that cleans the air of debris is a better choice than an air purifier that has no filter.

Most air purifiers use filters that are placed between the fan unit and the air outlet. The fans used by air purifiers move dry ionized particles, such as pollen, mold spores and dust, directly through the filter into an exhaust chamber. Filters used by air purifiers typically consist of a series of paper, carbon, fiberglass and/or metal sheets that trap and dispose of the particulates in the air.

Type of Pathogen Removed By An Air Purifier

There are a number of different types of pathogens that can be removed by an air purifier, but the most common one are:


Allergens are the airborne particles that trigger pollen and mold allergies. The most common allergen is dust mite feces, which is very small and hard to see with the naked eye. Allergens are usually removed by using a carbon filter, which can be a bit more expensive than others.

A slightly cheaper option is to use an activated charcoal filter, which can remove many allergens with a minimal amount of contaminant retention, and is not as effective at removing mold spores as a carbon filter.


Pollen is another common type of airborne particle that triggers allergies. It's often referred to as "hay fever" because in the summertime hay can grow in places where trees are not planted and can come into contact with grass. Hay fever-triggering pollen can come from trees, weedy grasses or other plants.

Dust mites.

Dust mites may enter your home on items such as a cat or dog bed, pet toys and furniture. As dust mites feed, they shed feces, which look like fine red crumbs and can be seen with the naked eye. Dust mites are also one of the most common allergens that trigger asthma.


Fungi are microscopic organisms that are present in the air in many types of indoor environments. They can be composed of mycelium (filaments) or spores (formed by cell walls). These organisms may trigger allergies, aggravate asthma and cause fungal infection. Common examples include Cladosporium, Basidiospores and Aspergillus spores.


Bacteria are also present in the air to a minor extent in many indoor environments. These organisms can be found on fiberglass insulation, upholstery and other surfaces. Bacterial contaminants can cause upper respiratory infections such as colds or influenza.


Mold is a fungus and is present in indoor environments. Mold has spores meaning it can be transported through the air as dust. It is one of the most common allergens that trigger asthma, allergies and other upper respiratory problems.


Smoke is an airborne contaminant that is composed of many chemicals, including ammonia, formaldehyde, hydrogen cyanide and sulfur dioxide. Smoke can irritate the respiratory system when it is inhaled.

Pet Dander

Dander is another airborne contaminant that is composed of feces and hair from cat dander (cat hair) and dog dander (dog hair). Dander triggers allergies, asthma and other upper respiratory tract problems for those who are highly allergic to it.


Odors are airborne irritants composed of chemicals and particles that are emitted from a variety of sources. Odors are commonly caused by fecal matter, mold or mildew aerosols and gases.


So, if you're looking for something that will improve your indoor air quality and help with your allergies, asthma, or dry cough - an air purifier may be exactly what you need. If you really want to know if it's really effective or a waste of money - do some research, read the reviews on Amazon, look at the company websites and think about what can help you and what is just hype.

The most important thing to remember is that air purifiers are not going to cure you of your allergy or asthma - you need to see a doctor for that. Use an air purifier together with medication, but never as a replacement for it. You should also not give up medications because they have some side effects.

If you're worried about pollutants in the air you breathe, or if you want to sleep better at night - an air purifier may be exactly what you need.

  • Connected: WiFi connected; See real time reports, remotely control your machine and create schedules around your day using the Dyson link app
  • The latest Dyson purifying fan; It senses pollution and allergens, captures them in a sealed HEPA activated carbon filter, and projects purified air around the room
  • Projects: projects purified air throughout the whole room
  • Voice Control
  • Advanced HEPA filtration with six stages of purification and deodorization
  • Connect to your WiFi network and control from anywhere with the Rabbit Air App
  • Germ Defense customized filter: Effectively traps and reduces airborne bacteria, mold spores and particles that carry viruses.
  • The MinusA2 is designed to either stand alone or to be mounted on the wall.
  • Room coverage up to 815 sq. ft.
  • Coway Mighty (AP-1512HH) is designed to accommodate room sizes up to 361 sq. ft (CADR: Dust 246 / Pollen 240 / Smoke 233 cb. ft. ).
  • 4 Stage Filtration System (Pre-filter, Deodorization filter, True HEPA filter, Vital Ion) captures and reduces up to 99. 97% of particles 0. 3 microns in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds and reduces odor.
  • Coway Mighty pollution sensor communicates indoor air quality in real-time. The brightly colored LED lets you know how clean or dirty your indoor air is every minute of the day. And it features a timer, and filter lifetime indicator.
  • Fan speeds available in 1, 2, 3 stages by manually setting up. While auto mode automatically optimizes the speed setting 1 through 3 based on the level of indoor air quality. When no pollution is detected for 30 minutes, the fan will automatically stop and set as Eco mode to save energy.
  • Timer feature allows the machine to run 1/4/8 hours before automatically powering off.
  • Filter replacement indicator checks both Pre-filter and HEPA filter respectively to let users be aware of when to wash or replace the filter.
  • 77 W power consumption and quiet operation with noise level ranging from 24. 4 dB to 53. 8 dB.
  • Limited manufacturer's covers any internal/functional parts for 1 year and motor and electronic parts for 3 years. Filters are excluded.
  • Won the Best Air Purifier of 2018 at Wirecutter and ranked 1st place at the TopTenReviews.
  • Power source type: Electric

Other Questions

How long does it take an air purifier to clean a room?

45 minutes to 2-3 hours to clean a room. If you have allergies, asthma or live in a household with pets you should use a HEPA filter. The new Ionic Pro air purifiers capture 99.97% of particles as small as 0.1 microns - that's more than 300 times smaller than the diameter of a human hair.

Where should I place my air purifier?

An air purifier should be placed in the room that it is intended for. The air purifier will not remove allergens or odors from other rooms. It should be placed a foot away from a wall and 6 inches from furniture.

Does air purifier use a lot of electricity?

No, air purifiers use less electricity than other common pieces of home electronics. A purifier will use about as much electricity as a light bulb, not including the fan.

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Nick Le Page

 An air purifier is a device designed to remove dust, pollen, smoke, soot, mold spores, smog, and other airborne pollutants from the air.

If you want to keep your home clean and free of contaminants—and save money on heating and air conditioning bills—quality air purifiers are a powerful first step.

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