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Research has shown indoor air quality is often significantly worse than that outside, which is why it's no surprise that air purifiers are such a popular purchase among homeowners. These devices work to remove microscopic particles from the air, saving potentially harmful molecules like dust, mold, smoke, and more from entering your lungs.
If you're looking for an air purifier to help improve the air quality in your home, the following are the best options available today, all of which will help you breathe a little easier.
Another incredibly efficient, effective air purifier is the Coway AP-1512HH Mighty Air Purifier. In addition to removing contaminants from the air, this machine has several additional features that make it a worthwhile purchase.
Using a four-stage filtration system, this Coway purifier removes 99.9 percent of contaminants from the air, as well as many odors. It can be used in rooms up to 361 square feet, and it features a pollution sensor that provides real-time updates on your air quality. Additionally, this air purifier comes with an eco-friendly mode, where it automatically shuts off once no pollution is detected.
Reviewers say the Coway Mighty Air Purifier is durable and effective, doing an especially great job eliminating odors from the air.
"We tested the Coway Mighty Air Purifier in an open floor plan living room. This is exactly the kind of room it’s intended to be used in, with the manufacturer recommending it for rooms up to 361 square feet in size. We found that after only a few hours of use, the entire space smelled fresher—even with a dog in the home."—Suzie Dundas, Product Tester
One of the most efficient, highly-rated air purifiers available right now is the Honeywell True HEPA Allergen Remover. This device helps remove more than 99.97 percent of airborne particles from large rooms, effectively improving indoor air quality.
This top-rated air purifier from Honeywell is effective on particles as small as .3 microns, and it will capture things like pollen, dust, mold, pet dander, smoke, and germs. It's effective in rooms up to 465 square feet, and it can circulate all the air in a given area up to five times an hour. Not to mention, reviewers love this HEPA air purifier, which they say comes at a great price and helps reduce allergies and sickness among their family.
"After running the purifier overnight in a living room, we awoke the next morning to find the room smelling fresher and one allergy sufferer was significantly less congested. After a few days of continued evening use, the filter showed signs of effectively trapping dust and dog hair."—Suzie Dundas, Product Tester
If someone in your home has allergies, it may irritate them to have pet dander floating around in the air. A great product to capture pet dander and other irritating particles is the LEVOIT LV-H132 Air Purifier.
This model has a three-stage filtration system, including a true HEPA filter, that removes 99.9 percent of dust, pollen, smoke, mold spores, and pet danders. It can filter out particles as small as .3 microns, and it can be used in rooms as big as 85 square feet. There are more than 1,500 glowing reviews for the LEVOIT Air Purifier, and many buyers say it’s amazing at reducing airborne irritants, as well as pet dander and odors.
"We tested the purifier in a bedroom with two people and a shedding Bassett hound, running it overnight for a week. Following our initial run, we turned it off for a few nights to compare the difference in air quality. While we didn't notice any significant difference during the week it was running, we could certainly tell during the off-days that the unit had indeed been doing its job when it was on. Without it, the room smelled mustier and we woke up with scratchier, itchier throats."—Suzie Dundas, Product Tester
High-end air purifiers can cost up to several hundred dollars, but you don't need to break the bank to get a quality product. One great budget option is the GermGuardian AC4825 22” 3-in-1 Full Room Air Purifier, which delivers the same air-purifying power for a fraction of the price.
This model uses a HEPA filter to capture 99.9 percent of allergens, including pet dander, mold spores, and pollen. It also uses a charcoal filter to reduce common odors from pets, smoking, cooking and more, and it boasts optional UV-C light technology that can kill airborne bacteria and germs. Not to mention, there are more than 5,500 5-star reviews for this air purifier, many of which call the product life changing. One reviewer even noted that she hasn't gotten sick since she purchased her GermGuardian three years ago.
"This model’s unique Ultraviolet-C light does require a blue light to be on, which could be distracting to a sensitive sleeper. Thankfully, this feature is optional and can be turned on and off by the push of a button. In terms of noise, this is a very quiet machine with three different levels of speed. Even on the highest setting, the purifier is no louder than white noise. For everyday use, we found the lowest setting to be sufficient and silent."—Suzie Dundas, Product Tester
When you're looking to rid your room of allergens, make sure the air purifier you pick has a HEPA filter. These type of filters trap at least 99.97 percent of particles in the air, so you're not breathing in pollen, dust, or pet dander that may irritate your allergies. But this air filter does more than just trap allergens with one filter. It also has a pre-filter to catch much larger particles to keep your filter working for longer, and a carbon filter to get rid of smoke, pet, and cooking smells that may also irritate your nose or lungs. Finally, it has a UV light to help kill bacteria in the air.
This air purifier also wins points for its features, which go above and beyond. Topping that list is the air quality indicator that flashes yellow and red if the air quality in the room decreases. It gets this data from both the purifier and the included SensorPod air monitor that can be placed across the room to make sure your entire living space is clean.
While microscopic, mold particles can be harmful to your health if you breathe them in over a prolonged period of time. If you're concerned about mold in your home, you should invest in an air purifier such as this model from GermGuardian.
This product uses a HEPA filter to capture 99.9 percent of dust and allergens as small as .3 microns, and it also uses UV-C light technology to reduce airborne bacteria, germs, and mold spores. It's effective in rooms up to 180 square feet, as it can circulate the air up to four times per hour.
According to reviewers, the GermGuardian Large Room Air Purifier works great, noticeably clearing dust and other particles out of the air. However, several note this product is louder than other “silent” models.
If you live in an area where there are frequently wildfires or have someone in your home that smokes, you know how permeating the odor can be. However, you can combat the smell of smoke and clear allergens from your air with an air purifier that has multiple types of filters to keep your air feeling clean. In the case of this model, that means a HEPA filter for dust, pollen, and pet dander, plus a carbon filter for smoke and odors, and a pre-filter to catch larger particles and keep them from clogging the filters.
Of course, there is more to an air purifier than just the filters. This pick has a sleep mode that's extra-quiet, and a timer if you'd like it to turn off after a certain amount of time. There's also an auto mode that will react to the air quality in the room, increasing the fan speed if the sensor detects more pollutants in the air.
If you're going to put an air purifier in your bedroom, you probably want it to be quiet enough that it won't disturb you while you sleep. If this is the case, you should definitely look into the Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier, which is virtually silent during operation.
This air purifier has a four-stage purification and deodorization system that includes HEPA filtration. It can be used in a room up to a whopping 550 square feet, and it traps particles as small as .3 microns with a 99.9 percent efficiency. The Rabbit Air purifier is great for reducing the buildup of common allergens such as dust mites, mold, pollen and pet dander, as well as bacteria and viruses, making it a solid investment for any bedroom.
Reviewers say this unit looks sleek and modern, and it delivers “unbelievable” results, freshening up rooms and removing unpleasant odors, to boot.
If you aren’t afraid to spend a little extra on a high-end product, you can't beat the design and performance of the Dyson Pure Cool Purifying Tower Fan. This highly-rated product has impressive dual functionality, working as both an air purifier and a fan in rooms up to 400 square feet.
This product from Dyson uses a HEPA filter to capture 99 percent of microscopic particles, as small as .3 microns, but it does more than that. It also features a real-time display that shows you air quality levels, and it has a powerful fan that includes both forward and backward airflow modes and can oscillate 350 degrees. Additionally, this air purifier includes smart technology, so it links up to the Dyson app and can be controlled via Amazon Alexa.
Reviewers give this product top marks across the board, writing that it's easy to use and control, and it works incredibly efficiently, even in larger rooms.
The best overall air purifier is the Coway AP-1512HH Mighty Air Purifier, which is a quiet and efficient product with lots of extra features. However, if you’re looking for an air purifier that’s great for homes with pets, go with the Levoit LV-H132 Air Purifier. This model has a three-stage filtration system, including a true HEPA filter, to help remove pet dander from the air.
Size A larger room requires a higher-capacity air purifier. This is measured by clean air delivery rate, or CADR, which indicates how many particles are filtered and how fast. For the most effective air purifier, choose one that has a CADR rating that’s at least two-thirds the size of the room. (A 100-square-foot room would have a CADR rating of at least 67.)
Efficiency Air purifiers clean a room’s air at different intervals over the course of one hour. This is called air change per hour, or ACH rate (which varies from 2-6). An ACH rate of 2 means the air will be cleaned every 30 minutes, an ACH rate of 4 means the air will be cleaned every 15 minutes, and an ACH rate of 6 means the air will be cleaned every 10 minutes.
Filter type There are three main types of filters: HEPA filters, charcoal or active carbon filters, and washable filters. HEPA filters are most effective at reducing common allergens (pet dander, pollen, and dust), but charcoal or active carbon filters remove irritants like smoke or cooking smells more effectively. Washable filters are more cost efficient and environmentally friendly since the entire filter does not need to be replaced.