Best Large Room Air Purifiers, Tested & Reviewed
Improve your home's air quality, no matter how big the space.
Expert consulted: Dan DiClericoHome Improvement & Outdoor Director
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Air purifiers can help reduce common allergens in your home, from dust to pet dander, pollen and more. If you’re trying to improve the air quality in a relatively large space, whether it be your living room, master bedroom or kid’s playroom, you’ll need to invest in a large room air purifier that’s up for the job. The air purifiers below can effectively operate in spaces up to at least 800 feet, if not more.
The engineers and analysts at the Good Housekeeping Institute test a range of HVAC equipment for your home, including dehumidifiers, humidifiers and portable air conditioners. Over the last five years alone, we’ve reviewed close to 50 air purifiers, evaluating everything from their ability to capture contaminants like microscopic dust mites to pet hair. According to our pros, these are the best air purifiers to consider for large rooms of your home.
Honeywell True HEPA Air Purifier
Pros
- Available in a range of sizes
- HEPA-certified
- Replacement filters are affordable
Cons
- Capture rate could be better
You'll find everything from tower fans to air purifiers from this established brand in the home comfort space. This Honeywell air purifier is capable of cleaning up to 1,500 square feet in 60 minutes, making it suitable for most living rooms, master bedrooms and more. If you want to tackle even more space (up to 2,250 square feet), you can opt for the extra-large model.
According to Honeywell, the air purifier uses a pre-filter and true HEPA filter to capture contaminants down to .3 microns, including dust and other airborne particulates. We appreciate that replacement filters are fairly affordable, and like that the large-sized model claims to clean the air as often as five times an hour to remove up to 99.97% airborne particles. While this rate is sufficient for capturing allergens, we've witnessed even smaller capture rates in our testing.
RELATED: Best Air Purifiers for Allergies, Tested by Experts
Coverage area: 1,500 sq ft (maximum) | Dimensions: 17.7" x 18.8" x 10" | Weight: 13.9 lbs
Honeywell InSight Series HEPA Home Air Purifier
Pros
- Perfect scores for ease and effectiveness
- Easy to adjust cleaning power
- Effectively detected irritants in the air
Cons
- Larger footprint
"Honeywell has a solid track record in our tests, so you can count on this air purifier delivering many years of service," said Dan DiClerico, Director of Good Housekeeping's Home Improvement and Outdoor Lab. While this HEPA air purifier only claims to handle a 360-foot cleaning area in 12.5 minutes, if you run it for longer stretches of time, it can handle much larger spaces, like a master bedroom or large kid's playroom.
Ours pros like that the built-in air sensor monitors air quality in the room, letting you adjust cleaning power as needed, for example, kicking into turbo mode when the house is filled with cooking fumes or on high pollen count days. Despite its robust cleaning power, the Honeywell is energy efficient, with the Energy Star label to prove it.
In consumer testing, it earned perfect scores for ease and effectiveness. DiClerico was impressed by how well it detected irritants in the air, and other testers found it quiet and easy to operate. Just keep in mind its larger footprint.
Coverage area: 360 sq ft | Dimensions: 17.9" x 19" x 10.06" | Weight: 16.3 lbs
Dyson Purifier Humidify+Cool Formaldehyde
Pros
- Fast, efficient air cleaning
- Also features a built in humidifier and fan
- Sleek appearance and display
Cons
- Expensive
While it doesn't come cheap, we recommend this air purifier from Dyson for anyone seeking to optimize your home's indoor air quality. What makes this sleek-looking appliance unique is that it also has humidifying and cooling capabilities so you can use it year-round.
To filter the air, it features a catalytic filter combined with true HEPA filtration to reduce particulate matter down to .3 microns. It was one of the fastest and most efficient models in our Lab tests and features some of the most sophisticated onboard air monitors in any purifier. Our pros do warn that it is on the larger side however, standing 3 feet tall.
RELATED: The Best Air Purifier and Humidifier Combo Units
Coverage area: 800 sq ft (maximum) | Dimensions: 12.30" x 12.30" x 36.33" | Weight: 18 lbs
Alen 75i Air Purifier
Pros
- Robust and powerful
- Sleek appearance available in six colors
- Captures particules as small as .1 microns
Cons
- Extra ionization setting not recommended
If optimal air quality is your priority, look no further than this top-performing machine from Alen. Thanks to a HEPA filter, it can capture contaminants down to .1 microns and combines advanced filtration with a powerful fan to cover up to 1,300 square feet. While it's larger than some of our other picks, our pros love its sleek front panel that's available in six colors.
Note that our experts don't recommend using Alen's ionization setting (designed to combat even more pollutants), since it can produce ozone, a lung irritant. Even without this feature, we're confident that this air purifier can capture dust, pollen, smoke and more to help improve your home's air quality.
Coverage area: 1,300 sq ft (maximum) | Dimensions: 11.5" x 18.5" x 27" | Weight: 27 lbs
Rabbit Air MinusA2 Air Purifier
Pros
- Excellent, multi-stage filtration
- Space-efficient design that can be wall mounted
- Easy to install and operate
- Quiet
Cons
- Replacement filters are more expensive than most models
Featuring multiple levels of filtration, our pros were wowed by the performance of this air purifier from Rabbit Air. Not only do we love its sleek, streamlined design, but we appreciate that it can be wall-mounted to free up floor space. In Lab tests, our experts found installation and operation to be simple.
Also unique is that you can choose customizable filters, depending on the pollutants in your home. The multi-stage filtration includes a true HEPA filter rated to capture 99% of particulates less than 0.1 microns, a pre-filter, an activated carbon filter, a medium filter and a customizable filter option (germ, odor, pet allergy or toxin filter). Keep in mind the replacement filters are more expensive than most models.
Bonus: Our pros confirm that it lives up to its whisper-quiet claim.
Coverage area: 815 sq ft (recommended) | Dimensions: 7" x 21.4" x 20" | Weight: 19.4 lbs
How we choose the best large room air purifiers
At the Good Housekeeping Institute, our pros continuously test air purifiers throughout the year. Our product experts keep tabs on the marketplace to identify the best air purifiers that you’re most likely to find in stores and online. We also attend trade shows and industry events, like the Consumer Electronics Show (CES), to stay on top of the latest innovations in indoor air quality. Next, we identify brands that have performed well and proved reliable over more than a decade of air purifier testing. We also consider new brands with unique features or innovations.
Our Lab experts selected the best air purifiers for large rooms based on a review of technical data, claimed coverage area and more. We also factored in feedback from hands-on testing that took place both in our Lab and homes.
Controlled Lab tests measured an air purifier's ability to capture specific contaminants, such as smoke and other VOCs (volatile organic compounds). At-home testing checked for general improvement of freshness, as well as overall usability. Our consumer testers measure factors like ease of setup, intuitiveness of controls and how uncomplicated it is to locate and replace the filter (or clean it, when applicable).
Following the combined 60 hours of data review, Lab testing and at-home evaluations, we arrived at our list of best air purifiers for large rooms out of 50 reviewed models.
What to look for when shopping for the best air purifier for a large room
✔️ Coverage area: When choosing an air purifier for a large room, check the square footage it's designed to cover as listed by the manufacturer. You may see one area listed for the coverage provided in one hour, and another for the coverage provided in five hours. Our pros advise paying attention to the lower number as you'll want an air purifier that cleans air quickly.
✔️ Filtration: Air purifiers typically rely on mechanical filters with a web of fine fibers to trap particles from the air that's pushed through by a fan. True HEPA filters use a fine mesh that's certified to capture 99.97% of particles measuring at least 0.3 microns. They provide the best cleaning power. You'll also find HEPA-like filters that aren't certified to meet this standard, as well as other filtration technologies.
✔️ Extra costs: Before investing in an air purifier, take note of the cost of a replacement filter. This can range from $20 per filter to $100 and up. Depending on your room's air quality, you can expect to replace it multiple times throughout the year.
✔️ CADR: This stands for "clean air delivery rate," and refers to how much clean air the air purifier produces among various pollutants. According to our pros, the CADR should be at least two-thirds of the area that the air purifier will be cleaning.
Why trust Good Housekeeping?
This story was written by Writer and Reviews Analyst, Olivia Lipski, who covers everything from tech to appliances, home, travel and more. She frequently collaborates with the Home Improvement and Outdoor Lab and worked with Dan DiClerico to create this guide.
DiClerico has extensively tested and written about air purifiers for nearly 25 years. He has also spearheaded numerous investigative reports on the topic of indoor air quality, working closely with outside experts from government, industry and the home services spaces. As director of the Home Improvement and Outdoor Lab at the Good Housekeeping Institute, DiClerico oversaw the latest round of air purifier testing in our Labs and the continuous in-home, survey-based consumer testing that allows us to evaluate these devices in real-world conditions.
Olivia (she/her) is a senior reviews writer and analyst at the Good Housekeeping Institute, where she tests and writes about tech, home, travel, fitness, parenting and health products. Since joining GH in 2021, she has continued to leverage her extensive product reviews experience by staying on top of the industry’s latest innovations and helping readers make better buying decisions. Olivia is a graduate of the George Washington University, with a bachelor’s degree in journalism, political science and French, and she holds a master’s degree in communications from Sciences Po Paris.
Having written thousands of product reviews and how-to articles on all aspects of home ownership, from routine maintenance to major renovations, Dan (he/him) brings more than 20 years of industry experience to his role as the director of the Home Improvement & Outdoor Lab at the Good Housekeeping Institute. A one-time roofer and a serial remodeler, Dan can often be found keeping house at his restored Brooklyn brownstone, where he lives with his wife and kids.
