The Best Air Purifiers to Buy for Your Home or Office

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With greenhouse gases and other pollutants occupying our air spaces, finding fresh and clean air can be tough. The quality of the air that you breathe is equally important at your office as well. To combat this, air purifiers can be helpful especially if you have allergies or medical conditions such as asthma, and can remove harmful contaminants from the air in your home.

While budget and personal needs will dictate what kind of air purifier you want, you need to ensure the device you choose is appropriate for the room or space you want cleansed. If you’re looking to improve the air quality of your home, there are a variety of air purifiers that come with a variety of features; we'll discuss more about that below. But first, check out this list of the best air purifiers to buy:

1. Editor's Pick: Meleden Air Purifier

Key Specs

Weight: 550g
HEPA filter
Chargeable with USB ports

Offering three stages of filtration to capture up to 99.97 percent of particles and a negative ion generator to tackle problem odours, the Meleden Air Purifier is a great, affordable option for pet owners and parents. This model is great for parents with newborn babies and toddlers because you can use it to remove toxins and dust in the air — even pet hair. It works well for pet owners with shedding cats and dogs, and has two fan speeds, an air quality monitor and a whole host of cool and interesting features.

2. Runner Up: Blue Pure 211+ Air Purifier

Key Specs

Three-stage Filtration System
Advanced Carbon Filter
Noise-Cancelling Technology

Designed to purify your air in medium to large rooms between 400 sq. ft. to 600 sq. ft., this purifier is ideal for bedrooms, kitchens, living rooms and offices.

The Blue Pure 211+ carbon filter air purifier removes common odours from cooking and those caused by smoke, pets and other pollutants. With a simple, user-friendly one-button control, you can easily select from three different fan speeds, all of which help to remove allergy pollutants and other odours.

The three-stage filtration process starts with washable pre-filter, which captures larger particles like dust and pet hair. The air passes through both a particle and activated carbon filter which catches virtually every airborne contaminant down to a virus in size: pollen, dust, pet dander, mold spores, smoke, allergens and bacteria. It’s a high-performance model that’s built to last.

3. Also Consider: Germ Guardian AC4825CA 3-in-1 Air Purifier

Key Specs

HEPA Filter
Optional UV-C Technology
167 sq. ft. coverage area

Get better indoor air quality with the Germ Guardian 3-in-1 Air Purifier. This air purifier uses a HEPA filter to remove 99.97 percent of dust, pollen, pet dander, mould, bacteria, smoke and allergens down to 0.3 microns in size. What's more, its 167 sq. ft. coverage area is perfect for both small to medium-sized rooms. It not only filters the air, but its optional UV-C light kills germs as its charcoal filter captures odours.

4. Best Portable: Coway Mighty Air Purifier

Key Specs

Covers 361 sq. ft. area
Dimensions: 16.8 x 18.3 x 9.6 inch
HEPA Filter

The mighty air purifier is a HEPA filter that takes care of 99.97 percent of your pollutants. It uses a four-stage filtration system to effectively eliminate odors and pollutants. It also includes an air quality indicator through our particle sensing technology that will kick your air purifier into high gear when needed. When pollution is not detected for 30 minutes, the fan will automatically stop to save energy. It can help you with asthma and allergies by capturing airborne particles including dust, pet dander, and mould that may trigger asthma and allergies.

5. Best for Large Spaces: Alen BreatheSmart 75i Large Room Air Purifier

Key Specs

Cleans 1300 sq. ft. in 30 minutes
HEPA Filter
Laser Smart Sensor and LED Colour Display

Perfect for large rooms and open concept spaces, the Alen BreatheSmart 75i Air Purifier offers a 1300 sq. ft. coverage area. Equipped with a HEPA Filter and other great technology, this model is best for removing airborne allergens such as dust, mold and bacteria. What’s great about this model is that it comes with an additional HEPA filter.

6. Best for Bedrooms: Levoit Air Purifiers for Bedroom Home

Key Specs

Three-stage filtration system
Removes 99.97 of airborne contaminants
Quiet operation

With this Levoit air purifier, you can make that nightmarish existence disappear and replace it with cleaner inside air that’s free of allergens and other particulates that irritate your eyes, nose, skin and lungs.

With its three-stage filtration system, this air purifier will remove common allergens such as pet hair, dander, smoke, mould, large dust particles and odours, in addition to removing 99.97 percent of airborne contaminants as small as 0.3 microns. There are three settings on this air purifier — low, medium and high — that circulate the air over four times an hour in a space that is 219 sq. ft.

This air purifier is a good choice to use at night since its quiet 25db operation won’t disturb even the lightest sleeper. It also has an optional night light feature and a built-in function that reminds you when the filter has to be changed, which is every six to eight months. This quiet machine is also a good pick for an office environment.

7. Sleeper Pick: Honeywell HPA300C True HEPA Air Purifier

Key Specs

Purifies a space of 465 sq. ft.
Auto shutoff timer
HEPA filter

This air purifier is from Honeywell, a brand that is recommended by doctors and popular for its line of humidifiers and air purifiers. This model, which is a bit pricey, will clean and change the air five times an hour in a space of 465 sq. ft. — a speed that is quicker than with other models, resulting in a higher rate of purified air.

The air first passes through a carbon pre-filter that captures odours, VOCs and gases, and then goes through a HEPA filter to capture up to 99.97 percent of microscopic airborne particles and up to 99.9 percent of dust, pollen, pet dander, smoke, bacteria, mould spores and viruses in the air such as E. Coli, MS2 virus, and A. Flavus fungus.

The air purifier is easy to use with electronic tap controls for three air cleaning levels, plus Turbo Cleaning. Plus, there is an auto shutoff option so you can set the purifier to turn off after two, four or eight hours. The good thing about this air purifier is that while the pre-filter must be replaced every three to six months, the HEPA filter is good for a year.

8. Honourable Mention: Air Purifier for Desk, Home Travel-Size

Key Specs

Compact and portable
Powered by a USB cable
Cleans up to 70 sq. ft.

This small personal-sized air purifier is a great choice for anyone who works in a small, windowless office all day, travels a lot or whose daily carpool passenger is a smoker. Compact and lightweight and powered by a USB cable, this air purifier is portable and cleans up to 70 sq. ft. of space, perfect for the car, a hotel room, or even your bedroom at home.

This air purifier might be small, but it is equipped with a triple-layered filtration system that includes a HEPA filter with activated carbon layering, so you can be sure it will remove 99.97 percent of pollen, smoke, pet hair and dander, and other impurities from the air around you. With a quiet operation of between 22 and 25db, you can even use it in a baby’s room.

Its simple one-button design means there are no bells and whistles like an automatic shutoff or filter change reminder, but for the size and price, it’s a great choice to clean the air around you of most common allergens.

How Do Air Purifiers Work?

Today’s air purifiers consist of a fan (sometimes more than one) and filters. An air purifier works to separate the pollutants by drawing in the room’s air through filters. In most cases, this is called a passive air purifier. Meanwhile, active air purifiers uses ionization to clean the air in your spaces. Overall, passive air purifiers tend to be more effective, as they permanently remove particulates by trapping and collecting them in the filters (which will need regular cleaning to maintain peak efficiency).

Benefits to Using an Air Purifier

Having cleaner air will help you breathe better, sleep better and improve your lung function. Here's how:

  • Allergens — There are many allergens that can present itself in your home. Whether it’s dust, pollen or spores, there are a lot of reasons why you might need to purify the air around you. Dust can be a major allergen for some people, not to mention an endless chore to clean up. You can finally put away the feather duster and use an air purifier to make life easier. If you or someone in your family suffers regularly from allergy symptoms, an air purifier can greatly reduce all these common allergens around your home.
  • Chemical Absorption — If you constantly clean your home, chances are that there are a lot of chemicals in your house. Whether it’s second-hand smoke from an oven or chemicals found in paint, these materials can pose a risk to your health. An air purifier can eliminate a great number of these chemical, bacterial and viral particles from the air.
  • Household Odours — Nobody wants to live in a place that smells like stale air or in a place has a lot of pet hair in the air. That’s where an air purifier comes in. Since the air is passing through filters, the purifiers also remove unwanted odours while cleaning the harmful particles in the air as well.
  • Pets — An air purifier can reduce and remove pet allergens such as dander and also remove that awful dog smell that's been permeating your spaces. Even if you or someone in your family doesn’t suffer from a pet allergy, chances are someone who visits your home does, so having an air purifier can make your home more inviting for guests that have allergies.
  • Type of Air Purifier Filters

    Considering your needs — and room sizes — will be important when you’re purchasing one so here’s the various types of filter technology options for home air purifiers:

  • HEPA — The primary filter technology in air purifiers are called high efficiency particulate air filter or HEPA. It removes at least 99.97 percent of micrometer particles and it’s effective at removing large particles such as dust and pollens.
  • Carbon Filters — These models use activated carbon, which can absorb harmful chemicals by turn them from gas to a solid particle. They’re also good for removing household odours.
  • Ionizer Purifiers — These high-tech purifiers use electrical surfaces or needles to generate gas ions, which attach to airborne particles. These charged particles are then attracted to a collector plate in the purifier.
  • Air Purifier FAQs

    When you're considering an air purifier, it's important to make sure you place the purifier out in the open where it can adequately circulate the air in a particular room. Also keep in mind that air purifiers work best when doors and windows are kept closed. Want to learn more? Here are some frequently asked questions we get from our readers.

    Can I Leave an Air Purifier on All Night?

    Clean air will get contaminated again within three to four hours' time if you had left your air purifier turned off. It’s highly recommended that you leave it running 24 hours a day.

    How Long Does It Take for an Air Purifier to Clean a Room?

    Most air purifiers take approximately 30 minutes to two hours to completely cover an entire room. It does depend on fan speed, room size and the air purifier’s purifying coverage.

    When Should I Run My Air Purifier?

    It’s generally best to run the purifier for a few minutes before you go to sleep so you can get a better sleep at night. You can shut it off when you leave the house for work as well but if you have allergies to dust or pollen, it’s not a bad idea to keep it running 24 hours a day.

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