The Blueair Protect 7770i is a newer, high-tech, top-rated air purifier that has the largest purification capacity of our top picks at nearly 700 square feet. as real users, posing a threat to a site’s security, so the site sometimes runs random security checks. While air purifiers may not strike you as a loud appliance, their internal fans can produce a fair bit of noise while pushing air through their filters, according to Poppy Szkiler, CEO and founder of Quiet Mark, a UK-based, independent accreditation firm that collaborates with the Noise Abatement Society, a charity that works to identify quiet products and reduce excessive noise in society. Most air purifiers use fans to force air through a filter, which subsequently removes pollutants from that air. Poppy Szkiler is the CEO of QuietMark, a UK-based independent global certification program that identifies the quietest products.

Our partnership with two finance providers allows us to help you spread the cost for up to 12 months. We only selected air purifiers with a maximum sound level under 60 decibels, the sound of a normal conversation. You should look for HEPA-level filtration and a CADR that’s roughly two-thirds the area of your room, according to AHAM.

The Alen BreathSmart 75i is a large, top-rated air purifier with many smart features and an impressive 1,300 square foot rating.

William Bahnfleth is a president member of ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) and vice chair of its environmental health committee. For this piece, he spoke with experts like Poppy Szkiler and William Bahnfleth to learn more about air purifier certifications and sound levels. At Select, we work with experts who have specialized knowledge and authority based on relevant training and/or experience. Since we spend around a third of our days in bed, it’s all the more important we keep the air in our room clean. On the flip side, you don't need one which is more suitable for a conference hall than your kitchen.Therefore, we choose our top picks based on low decibel ranges in addition to positive consumer ratings.

According to our experts, however, air purifier decibel levels are self-reported by the manufacturers. That is because decibel levels on products are self-reported by the manufacturer — there is no official outside body verifying decibel claims. If you’re looking for an air purifier you can put in your bedroom (or home office), we’ve collected quiet, top-rated air purifiers for spaces large and small that hit that sweet spot between silent and clean air.

Cross-referencing brand decibel claims with consumer and professional reviews can help, in addition to reviews from outside groups like QuietMark. Featuring an innovative whisper quiet sleep mode and an aromatherapy pad, so you can enjoy a peaceful and relaxing nights sleep.