We have found the best-selling air purifier, so you can breathe cleaner air at home.

If you are browsing the many Black Friday air purifiers for sale but are not sure what to buy, we have done the hard work for you. The right air purifier can have a real impact on the air quality in your home, and our popular buying list will help you decide which air purifier is best for you-regardless of your health concerns, room size or budget.

The best air purifier will help remove the pollutants remaining in the air, allowing you to breathe better. According to the U.S. Environmental Protection Agency (EPA), indoor pollution levels are usually 2 to 5 times the typical outdoor levels, and poor air quality at home may be the cause of headaches and eye, nose, and throat irritation, as well as asthma, allergies, and other causes. Respiratory diseases.

Floating pollutants can be particles or gases. Common household pollutants include dust, pollen, smoke, pet hair and dander (tiny spots on animal skin), volatile organic compounds (VOC), mold, and bacteria. Since the COVID-19 outbreak, air purifiers have become more and more popular. As we look for ways to reduce the spread of bacteria and viruses in the air, more and more people are becoming aware of air quality. If you are looking for a specific model, we now have a separate guide on the best Dyson air purifier deals. 

If you want to know how an air purifier works, the performance of an air purifier is measured by its Clean Air Delivery Rate (CADR), which is an industry standard that represents the volume and speed of clean air generated in a room. 

There is a level of dust, pollen, and smoke. The greater the relationship between these numbers and the size of the room, the better your purifier-CADR should be at least about two-thirds of the room size. Another rating given is ACH, which represents the volume of air exchange per hour. This is how often the purifier exchanges fresh air in a room of a certain size-more ACH means you breathe fresher and healthier air. Checking these two ratings when buying an air purifier will tell you how effective it is for the size of the room you want to clean.

The job of an air purifier is to "filter" the air full of pollutants, so a suitable filter is the most important element in a unit. The gold standard is the HEPA filter-it stands for high-efficiency particulate air filters, and they have an efficiency of 99.7% in capturing tiny particles as small as 0.3 microns. Many air purifiers you consider also have pre-filters to capture large particles, such as hair, and carbon filters to capture gas and reduce odors.

It is worth noting that air purifiers cannot eliminate all pollutants. EPA recommends that external fresh air and addressing pollution sources are the key to a clean environment, but in addition to these measures, the use of air purifiers will help improve indoor air quality.

If you want an air purifier to help solve allergies, look for an air purifier that can effectively capture pollen and allergens. Or, if you are worried about the accumulation of cooking contaminants in the kitchen and want to know whether an air purifier can help eliminate unpleasant odors, choose an air purifier that can remove the smell of smoke in your home.

Other things to consider are whether you need a portable air purifier, whether noise is an issue, and whether features such as smart connectivity or multiple cleaning modes are right for you. 

How much you want to spend is also a big factor. The price of a top air purifier can be as high as US$500, or you can buy a high-performance budget model to improve air quality for less than US$100. For a mid-range device with a range of features, expect to pay around US$200 to US$300, although you can usually find great deals on bestsellers in all price ranges. Don't forget to consider the cost of the filter. Generally, HEPA filters must be replaced every 6-12 months, depending on usage. Carbon filters need to be replaced every 3-6 months, although some do have pre-filters and washable carbon filters to save costs.

To help you breathe cleaner and healthier air at home, we now provide you with special air purifiers.

Shark Air Purifier 6: Original price US$449.99, now Best Buy US$299.99. Equipped with six high-speed fans and Clean Sense IQ™ technology, it can continuously track air quality and automatically adjust power. Shark Air Purifier 6 uses anti-allergic HEPA filtration to purify up to 1,200 square feet. 

Miko's home air purifier is priced at $119.99, and now at Wal-Mart for $79.90, you can save $40 by buying this True HEPA filter from Miko. This durable and easy-to-use air purifier can easily remove 99.97% of hair, fur, dust, bacteria, viruses, mold, pollen, allergens, and odors, covering an area of ​​400 square feet. Includes a convenient built-in timer and an aromatherapy amplifier.

LG-PuriCare Mini Air Purifier-Priced at $199.99, now at Best Buy for $160.99. LG's mini air purifier can save nearly $40. Since LG PuriCare™ 360° technology can detect pollutants as small as 1 micron or less in diameter (≤ PM1), thereby achieving more effective filtration, it has a compact structure without sacrificing efficiency.  

Levoit Core 400S Air Purifier-Originally priced at US$219.99, now it is priced at US$197.99 on Amazon. Levoit 400S can purify any large room in your home. It has a 360° air intake and a smart auto mode with AirSight Plus technology that measures air quality and automatically adjusts the fan speed accordingly, all of which are controlled via the app or Alexa.  

Winix 5300-2: Original price $199.99, now $130.99 at Best Buy. Winix 5300-2 uses PlasmaWave technology, carbon pre-filter and HEPA filter to help purify the air in the home, covering an area of ​​355 square feet.

If you need to equip a large room with a powerful purifier, Honeywell HPA300 can easily handle tiny substances and is recommended by allergy experts. It uses three HEPA filters to filter smoke, dust and viruses, and a carbon-activated pre-filter can remove odors, gases and capture larger allergens, such as pet dander and pollen. 

It has four cleaning modes-including turbocharging to improve air quality more quickly. It is designed for large areas and can perform five air changes per hour in a room of 465 square feet. Although you cannot operate it remotely, the device’s touch buttons are easy to navigate. It has an automatic shutdown timer, the light on the control panel can be dimmed or turned off, and the LED indicator will tell you when you need to replace the filter. 

Are there any disadvantages? It is by no means the quietest purifier on our list, weighing 17 pounds, nor the most portable. However, for ultra-effective filtration with a competitive price tag, Honeywell HPA300 is excellent value for money.   

The performance of GermGuardian AC4825E is better than what you would expect from a purifier that costs less than $100. This slim 3-speed tower weighs only 7 pounds, so it is very easy to move around in your home. It can change air four times per hour, refreshes a room up to 153 square feet, and has a good CADR rating for low-end models.

In addition to the charcoal pre-filter that removes odors and the True HEPA filter that absorbs dust and allergens in pets and plants, this purifier also uses UV-C bulbs that are used in conjunction with TiO2 (titanium dioxide). This helps prevent airborne bacteria and kills mold spores and viruses circulating in the air.

In addition to the LED filter replacement indicator, the GermGuardian AC4825E has almost no other additional features, but if you are looking for a simple purifier for smaller rooms, it is a good choice.

Dyson Purifier Cool is a stylish choice that cools the air while cleaning it. Yes, it is expensive, but there are many smart features to justify the cost. 

Using Dyson's AirMultiplier technology, pollutants are sucked into the machine, and a smooth cooling airflow enters the room. When you don't need a fan, the air flows backwards. It uses a glass fiber HEPA 13 filter that can capture 99.95% of particles as small as 0.1 microns-from pollen and dust to bacteria and mold spores, and an activated carbon filter that removes harmful gases and odors. More importantly, the entire purifier (not just the filter) is sealed in accordance with HEPA standards to prevent pollutants from escaping into the air again.

The tower can swing 360°, so you can choose 10 settings to direct the airflow, including an automatic mode with a smart sensor that can adjust the air quality. Sleep mode can activate ultra-silent filtering and dim the display. Use Amazon Alexa, Apple Siri or Google Home to set up voice control for hands-free use or connect and control via the Dyson app - data lovers can also track real-time air quality and view previous statistics on particulate matter and VOC levels in the home.

The compact Coway AP 1512 HH has an effective 4-stage filtration system that can provide significantly cleaner air to a 361 square foot room. There is a washable pre-filter to catch dust, pet fur and hair, and a carbon filter to remove harmful gases and odors. Common allergens are processed by a HEPA filter, and it also has an ionizer (which can be turned on or off) that can release negative ions that Coway claims to help clean the air.

Select automatic mode and automatically adjust the fan speed to improve air quality, or you can manually cycle between the three fan settings. Switching to ecological mode makes Coway AP 1512 HH one of the most energy-efficient models on the market-saving you energy bills.

In addition to the impressive CADR rating and outstanding design, what we like about this purifier is that it is one of the quietest purifiers we have reviewed. At the lowest setting, there is only 24 dB of noise, making it ideal for sleep.

Because the CADR rating is comparable to more expensive purifiers, Winix 5500-2 has excellent air purification performance in larger rooms-it can purify 580 square feet of space in just 20 minutes. Using pre-filters, carbon filters, HEPA filters and Winix's PlasmaWave technology to remove allergens in four filtration stages, this technology disperses bipolar ions to decompose bacteria, viruses and VOCs in the air. 

Winix 5500-2 has a built-in smart sensor that can detect the smallest particles, and the LED indicator will inform you of the air quality, so you can switch between four fan speeds. We like the automatic function to detect light changes to turn on sleep mode-there is also a timer. Although the W5500-2 cannot be operated through the app, it has a remote control, so the settings can be changed at the other end of the room.

You can expect to replace the HEPA filter every 12 months and there will be an indicator to remind you. The advantage is that the fine-mesh pre-filter and carbon filter on the device are washable. In the long run, it is an economical choice.

Ali Horsfall has nearly 15 years of journalist experience and has written for national print publications and lifestyle brands, including Women and Family, Women, Women themselves, BBC Magazine, Mothercare, Grazia and The Independent. She currently focuses on health and fitness content and likes to share the best expert advice on staying healthy.

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