Air purifier: Best options and buying guide

If you arrived on this page, you already know the benefits of an air purifier to your health.

At first, it can seem overwhelming to find the formula for selecting an air purifier with so much information. But after you read this short guide below, you will be equipped to make the best possible decision.

Top 10 Air purifiers

LEVOIT Air Purifier for Home Bedroom, Dual H13 HEPA Filters with Aromatherapy Diffuser, Quiet Sleep Mode, Air Cleaner...
  • 【2 Functions in 1】 As an upgraded version of LV-H13EU. LV-H128 not only an air purifier but also an aroma diffuser. When you want to use the aromatherapy function, add 2-3 drops of your favourite essential oils (Not Included) to the aroma pad under the cover. Then the air cleaner will diffuse the clean air and fresh fragrances into the room
  • 【Dual Filter Design】 The LV-H128 H13 HEPA Air Purifier contains dual filters. Both filters consist of pre-filter, H13 HEPA filter and activated carbon filter. Help to bring you more fresh air than traditional ones
  • 【Effectively Purify the Air】 H13 HEPA filter can effectively clean at least 99.97% of airborne particles 0.3 microns in size, like smoke, odours, pollen and dust mites etc to help relieve asthma, allergy symptoms
  • 【Quiet Sleep Mode】 In sleep mode, the noise level is as low as 28 decibels, and the sound is as soft as a whisper in a friend’s ear. And for your better sleep quality, the button light will turn off after five seconds
  • 【Suitable for Different Usage Scenarios】 Ideal for Bedroom, Office and Small Room (Coverage area 161 sq ft²/15 m²). In high-speed mode, you can breathe fresh air in 30 minutes
Levoit Air Purifiers for Home Bedroom with H13 HEPA & Carbon Air Filters CADR 187 m³/h, removes 99.97% Pollen Allergies...
  • 4 CUSTOMIZED REPLACEMENT FILTERS: Depending on different individuals' needs, we provide four types of filters for purchase: original filter, pet allergy filter, toxin absorber filter, mould & bacteria filter for choose. Note: One original filter is pre-installed in the machine
  • Vortexair PURIFY TECHNOLOGY: CADR rating 187m³/h allows it to cover up to 40 m², Using the Core 300 to fill your environment with clean air. Notes: AC 220-240V/50HZ with UK 3-Pin Plug. It's NOT a wireless product and CAN'T be connected via USB
  • FILTER 99.97% OF PARTICLES: Working with ultra-fine Prefilter and activated carbon filter, Our H13 HEPA filter traps 99.97% allergens like dust, pollen, mould spores, pet hair, and reduces unwanted odors from pets, smoke, cooking fumes
  • PATENTED QuietKEAP TECHNOLOGY: Thanks to QuietKEAP technology, the noise level is barely 24dB in Sleep Mode. The Core 300 cleans your air without disturbing you at night. Display light can be turned off to enjoy a perfect sleep without annoying light
  • TIMER & 4 FAN SETTINGS: The timer can be set at 2/4/6/8 hours. You can select a desired time for auto shut-off. Choosing a suitable speed from low, medium, high and sleep mode, makes Core 300 an ideal air purifier for home, bedroom, office
Air Purifier for Home, Ultra Quiet HEPA Air Cleaner with Sleep Mode 3 Fan Speeds Air Quality Sensor 2/4/8/12H Timer for...
  • SUPERIOR FILTRATION SYSTEM: Equipped with 3 stage filtration system including pre-filter, H13 HEPA filter, activated carbon filter. This air purifier is perfect for people with hay fever, pets, kid family, smokers, the elders and anyone who want a better air.
  • HIGH-EFFICIENCY AIR PURIFICATION: Removing 99% of pet dander, dust, pollen, mold, eliminate dust, bacteria, mold and More! Making it a perfect air purifier for home or bedroom or other middle-sized to large rooms. Air blows out 360 degrees from the top to the surroundings to promote air circulation rapidly.
  • WORRY-FREE AIR QUALITY: Built with a monitor sensor, the air cleaner detects air quality level and shows the corresponding color -Blue-excellent, Green-good, Orange-moderate, Red-poor. Enjoy the fresh air all the day with your family.
  • SLEEP AND RELEAX AT EASE: In sleep mode display lights are dimmed and home purifier operates in near silence while you sleep to create a quiet and comfortable environment.
  • 3 FAN SPEEDS ADJUSTMENT: The home air purifier has 3 fan speeds and auto mode. Sleep mode fan speed and an adjustable night light create a peaceful sleeping or reading environment. The bedroom air filter automatically optimizes the fan speed from low, medium to high, based on the level of real-time air quality.
LEVOIT Smart WiFi Air Purifier for Home, Alexa Enabled H13 HEPA Filter, CADR 170m³/h, Remove 99.97% Allergies Smoke...
  • [Improved 3-Stage Filter System] While the ultra-fine Nylon Pre-Filter and High-Efficiency Activated Carbon Filter capture large particles and absorb odours and fumes, the H13 HEPA Filter captures 99.97% of airborne contaminants 0.3 microns in size, so you are safe from PM2.5, pollen, dust, pet dander and other pollutants
  • [Effective Purification] With 360 ° Design and Vortexair Technology, Core 200S purifies your air 2 times per hour in-room up to 35 m² and delivers fresh air 360º around you, in every direction, no matter where you place it. Suitable for bedroom, living room, smoking room and kitchen
  • [Very Easy Touch Display] With the touch display you can select 4 speed levels (sleep mode and 1-3 fan levels), set a timer for 2-4-8 hours, switch the night light and display on / off, check filter status
  • [Smart Control & Access Anywhere] With the VeSync App you can change fan speed and mode, check filter life, set schedules, set timers anywhere. All from your smartphone
  • [Voice Control] The Core 200S is compatible with Amazon Alexa and Google Assistant, so you can use your air purifier without having to lift a finger
Levoit Air Purifier for Home, Quiet H13 HEPA Filter Removes 99.97% of Pollen, Allergy Particles, Dust, Smoke, Portable...
  • 100% Ozone Free: The UVC Light and Anion that other brands adopt to purify air could produce a kind of air pollutant-Ozone, which is especially harmful for the children and asthma sufferers. Levoit air purifiers never use these for 100% Ozone free
  • Advanced 3-Stage Filtration System: The Pre-Filter, True HEPA Filter, and High-Efficiency Activated Carbon Filter capture allergens, pet hair, dander, smoke, odour and large dust particles, in addition to removing airborne contaminants as small as 0.3 microns
  • Ultra-Silent Operation: Filters the air with the lowest noise level as quiet as 25dB for a restful and soothing indoor environment, helping you sleep deeply. All settings can be made via the Levoit’s air purifier's elegant touch panel control panel. Effective Range: 129 ft2 / 12 m2
  • Night Light & Display Off Function: Choose between 2 brightness settings at night to help you see in the evening or turn the light off entirely to create your ideal sleep environment for an undisturbed slumber
  • 3 Fan Speeds: Choose from low, medium, or high fan speeds to tackle any level of air quality, making it a perfect fit in normal size rooms or office spaces
Philips AC0820/30 Series 800 Compact Air Purifier with Real Time Air Quality Feedback, Anti-Allergen, Reduces Odours and...
  • Intelligent purification – professional grade sensor automatically monitors, reacts & purifiers air
  • High grade filters remove 99.5% of ultrafine particles (PM2.5), dust, pollen, allergens, gases, bacteria and viruses
  • Quiet as a whisper - in sleep mode display lights are dimmed and purifier operates in near silence while you sleep
  • Compact size ensures fits in every place in your home. Provides air purification for rooms up to 49m²
  • 4-step colour display indicator provides visual feedback of the indoor air quality
Philips Series 3000i Connected Air Purifier with Real Time Air Quality Feedback, Anti-Allergen, Combined HEPA + Carbon...
  • High grade integrated filter removes harmful ultrafine particles as small as 0.003um, 800 times smaller than PM2.5
  • Remove 99. 97% of airborne ultrafine particles, dust, allergens, gases, bacteria and viruses
  • Intelligent purification – its professional grade air quality sensor automatically monitors, reacts & purifiers air so you don’t have to lift a finger. Night mode and automatic ambient light control ensures it doesn’t disrupt whilst you sleep. Quiet mark certified
  • 360-degree airflow circulation enables fast and efficient purification in large spaces up to 104m2 - Purify the air in a room of 20m2 in less than 8 minutes
  • Control and monitor the 3000i from anywhere using your air matters app. Use with Alexa for voice control
TOPPIN H13 True HEPA Air Purifiers for Home Large Room Up to 215ft²- 21dB Ultra-Silent Air Cleaner with Brushless Motor...
  • 【Ideal for Allergies and Pet Owners】: TOPPIN H13 True HEPA air purifier pet reduces pet odours, and traps pet fur and other contaminants. It also helps relieve allergies by capturing airborne contaminants such as dust, pet dander, pollen, and smoke.
  • 【Compact Design Yet Powerful】With CADR rating of 100 ft³/m, and compact as 6.7 x 6.7 x 13.0 in, this air purifier for bedroom circulates air 5 times per hour in a room up to 215ft² (20m²), and it uses a 360°air intake, meaning you can place it almost anywhere in the room without compromising performance, filter more comprehensively than other square filters.
  • 【3-in-1 H13 True HEPA Air Filter】The Efficient Air Filter removes up to 99.97% of all particles as small as 0.3 microns in diameter, when the nylon pre-filter and activated carbon layer filter out pollen, dust & pollutants, pets dander, pets hair, cooking & smoke odours, to keep the air clean around you and your pets.
  • 【Silent Fan Operation】TOPPIN air purifiers for home Run at incredibly low noise levels (<21dB at 1-Low fan level, 30dB at 2-Medium, 45dB at 3-High), for ultra-quiet purification that you can sleep or read next to.A timer for 2/4/8 hours for your convenience.
  • 【Filter Change Indicator】Automatically detects and reminds you to change the filter when the service time is less than 10% remaining (indicator in red); after replacement, press and hold the Filter button 5s until a beep is heard to reset.
Silentnight Air Purifier with HEPA & Carbon Filters, Air Cleaner for Allergies, Pollen, Pets, Dust, Smokers; Home or...
  • HEPA FILTER: The Silentnight Air Purifier removes 99% of airborne allergens as small as 0.3 microns including pollen, dust, pet dander, odours and smoke. Great gift for anyone who could do with help getting a great night's sleep and improve air quality
  • THREE SPEED SETTINGS: For optimum air filtration, run your air purifier continuously on the highest setting. Its robust motor has been designed to give many years of use. For quieter operation (such as while you are sleeping) select the sleep mode
  • TIMER: The timer allows you to run your air purifier at your convenience, for up to 8 hours. With four settings including 1H, 2H, 4H and 8H
  • IONIZER: The Silentnight Air Purifier has an independent ioniser feature which, when turned on, releases negative ions into outgoing filtered air to help the air purification process
  • QUALITY ASSURED: All Silentnight appliances have a 3 year warranty so you can purchase in confidence. HEPA filter should be replaced every 6 months and can also be purchased from (see above or search for B01LYFPVKX)
COWAY AP-1512HH Mighty Air Purifier - Removes up to 99.999 percent of particles down to 0.01 µm*, viruses and aerosols...
  • BEST AIR PURIFIER IN USA: The Airmega Mighty was named Best Air Purifier for eight consecutive years (2015-2022) by Wirecutter, New York Times
  • HyperCaptive FILTRATION SYSTEM: Removes up to 99.999% of particles down to 0.01 µm including allergens, bacteria, pet hair and dander, pollen, viruses and more
  • POWERFUL AIR PURIFICATION: A Clean Air Delivery Rate of 421 m³/h sufficiently purifies rooms up to 109㎡ and intensively purifies rooms smaller than 43m², circulating air over 4 times per hour
  • ADVANCED ECO MODE: Automatically adjusts the fan speed depending on indoor air quality and stops the fan if air quality remains good for 30 minutes or more, helping to save energy
  • COWAY: Specialists in air cleaning systems since 1994. We hold over 5,000 product patents and have already supplied more than 15 million customers with clean air worldwide

Why do I need an air purifier?

Your answer to this question is very important in finding and choosing the right air purifier. Why?

Because knowing precisely what you want the device to do will guide you in the right direction for the device you need to purchase. Knowing this elementary answer will make your decision that much easier.

When it comes to air purification technology, each device is designed to combat specific types of particles more effectively than others.

“What air purifier do I need?”; or more specifically, “how do I choose an air purifier that works best for my home?” You’ve already learned that air purifiers come in all shapes and sizes and that they use different mechanisms to filter the air.

For example, a product may be great for removing odours from a room but not the best for removing debris like pet dander.

Another device can be very good at removing allergens from the air and not having any effect on harmful bacteria.

As you can see, knowing what pollutants you want to remove from your home will help guide you in the right direction when selecting an air purifier.

Next, I will go over the different types of air purification technologies available to help you choose a device for your specific needs.

Best Air Purifiers — Objective Data Based Analysis

The two most common types of air purifiers

The air purifier with a real HEPA filter

An air purifier with a HEPA filter is a good option for a home where someone with allergies or asthma lives. This is because it can remove 99.97% of particles as small as 0.3 microns.

By comparison, a human hair is 2 microns in size, which is 4-5 times larger than most airborne pollutants.

This type of product is excellent for capturing microscopic particles that cause allergies and asthma. If you want to remove toxins like pollen, pet dander, mould spores, etc., this is the best type of air purifier you can install.

Since this kind of device uses a physical filter, it traps all the particles in it and does not allow them to be released back into the air. For asthmatics and allergy sufferers seeking long-term relief, this is excellent news.

The ionic air purifier

The technology that ionic air purifiers work with does not use a paper filter to capture the particles. Instead, it cleans the air by emitting charged particles (ions) into the environment, which then stick to the pollutants.

After creating a bond, these contaminant particles fall to the ground from the added weight. Or they are collected on an electrostatic plate if the device is equipped with one.

An actual and proven fact is that an ionizer can remove particles as small as 0.01 microns from the air. This size is 3 times smaller than the particle size that a HEPA device can trap.

The downside to this model is that the charged particles it emits can negatively affect asthma sufferers. Another possible disadvantage is that not all ionizers include a particle collection plate.

This means that harmful pollutants that have fallen to the ground can re-enter the air if they are agitated. However, a good plus point is that these are generally the cheapest air purifiers you can get.

Optional Air Cleaning Features Also Helpful

When deciding which air purifier model to buy, two optional features will help you compare them: the ultraviolet light technology and the inclusion of a carbon filter. The device you choose can include both or just one of them.

Ultraviolet light

If you’re wondering, “What air purifier do I need to create the most sterile environment possible?” The answer is a product that includes ultraviolet (UV) light.

This powerful feature works by sending out electromagnetic radiation that breaks down the DNA of bacteria, germs, and viruses. Once this process occurs, these microorganisms become harmless to humans.

The UV light from some purifiers is very effective in neutralizing viruses.

It should be noted that ultraviolet light air purifiers are completely safe for you and your pets. The spectrum of radiation they use is within the safe range for human use.

Charcoal filter

A true and proven fact is that an ionizer can remove particles as small as 0.01 microns from the air. This size is 3 times smaller than the particle size that a HEPA device can trap.

Although all the technologies mentioned in this article are excellent for creating more breathable and pleasant air, none of them is very effective in counteracting odours. So, here come the improved models with a carbon filter.

This special filter is the best choice for removing odours caused by smoke, pets, cooking, mould, and other factors. So if you are looking for an air purifier to make your home smell fresher, a charcoal filter appliance is the best alternative.

Make sure it’s powerful enough to meet your needs.

Another essential thing to consider in an air purifier is that it is powerful enough for the space you will use it. You do not want to find that the device does not have enough capacity to purify the chosen room.

On the specification list for all air purifiers, a classification includes terms such as “Medium coverage” or “Room size”.

This specification is given in square feet (for example, 100 square feet, which equates to about 9 square meters in the decimal system).

To decide on the air purifier you want to buy, it is essential that you first measure the room (s) where you are going to install it.

It then compares the result with the rating on the device.

Just make sure the product you buy can handle the intended size of the room, and you’re good to go.

For more information on how to make sure you are buying the correct size device, see the article on this page that further explains how to choose your air purifier based on room size calculation.

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Last update on 2022-05-27 / Affiliate links / Images from Amazon Product Advertising