Best Air Purifier for a Bedroom (2026): Quiet Picks Sized to Run All Night

For most bedrooms, buy the Levoit Vital 200S ($189.99 on November 4, 2026). AHAM certifies it for 388 sq ft, about twice a typical bedroom, so it can run on a quiet speed all night and still clean the air. Its maker rates it at 23 dB on low.

Levoit Vital 200S

Best for most bedrooms

Levoit Vital 200S

$189.99 on Amazon

Check price on Amazon
  • AHAM certifies it for 388 sq ft, about twice a 12 × 14 ft bedroom, so it can run on a quieter speed and still keep up.
  • Its maker states 23 dB on its lowest speed, 54 dB on high. EPA: a rating around 50 dB is about as loud as a modern refrigerator.
  • On California's (CARB) list of air cleaners tested for ozone.
  • Genuine filter: $49.99, changed every 6–12 months by the maker's schedule: about $100 a year.

Which one is right for you?

  • On a budget, for a bedroom up to 222 sq ft

    Levoit Core 300 · AHAM: 222 sq ft · 143 smoke CADR · HEPA-type · 24 dB low

    The cheapest purifier on CARB's list that AHAM certifies for 200 sq ft or more. It is sized for a 12 × 14 ft room on high, so it has less room to run quietly than the top pick.

    $84.99 on Amazon

  • Cheapest: a nursery or small room (about 100 sq ft)

    Dreo 338 · AHAM: 178 sq ft · 115 smoke CADR · True HEPA · 18 dB low

    The quietest low speed any maker here states, a true HEPA filter (AHAM) and ENERGY STAR.

    $59.98 on Amazon

  • For a large primary bedroom (up to 563 sq ft)

    Wozoyo Pure Air PA6 · AHAM: 563 sq ft · 363 smoke CADR · True HEPA + carbon · 22 dB low

    AHAM certifies it for 563 sq ft, so a 300 sq ft bedroom gets the same room to run slowly. A carbon layer for smells.

    $249.99 on Amazon

  • For allergies or asthma in the bedroom

    Our allergy picks · ranked by pollen CADR

    Same sizing rule, ranked on the AHAM test closest to pollen and dust mites. Keep pets out of the bedroom too.

    See allergy picks

  • For wildfire smoke

    Our smoke picks · sized by smoke CADR

    In heavy smoke, run the purifier on high in one closed room. That needs a bigger unit than everyday bedroom use.

    See smoke picks

Prices are Amazon's on November 4, 2026. Room sizes are AHAM-certified; noise is the maker's own figure. Every pick is on CARB's ozone-tested list.

By Erin Rose · Updated

01 / Size

How big a purifier a bedroom needs, to run it quietly

EPA's chart asks for a smoke CADR of about 65 for every 100 sq ft, with an 8-foot ceiling. A 12 × 14 ft bedroom (168 sq ft) needs about 109. AHAM's certified room size on each purifier uses the same rule.[1][2]

But that is on high. EPA: "An air cleaner will filter less air if it is set at a lower speed," and noise "depend[s] in part on the fan speed setting." At night you want a low, quiet speed. So we pick a purifier AHAM certifies for close to twice your bedroom (1.75 times or more): it can run a speed or two down and still keep up.[1]

Bedroom size, EPA's minimum smoke CADR, and the AHAM room size that lets a purifier run quietly
BedroomSq ftEPA minimum CADRTo run quietly, buy one rated forCheapest quiet pick today
Nursery (10 × 10 ft)10065175 sq ftDreo 338 ($59.98)
Small bedroom (10 × 12 ft)12078210 sq ftLevoit Core 300 ($84.99)
Bedroom (12 × 14 ft)168109294 sq ftLevoit Vital 200S ($189.99)
Large bedroom (14 × 16 ft)224146392 sq ftWozoyo Pure Air PA6 ($249.99)
Primary suite (16 × 20 ft)320208560 sq ftWozoyo Pure Air PA6 ($249.99)

02 / At night

Running a purifier while you sleep

  1. Look at the maker's low-speed noise. EPA: "If noise might prevent you from running the unit, you might consider an air cleaner that has a low published noise rating." We show only the maker's own figure; many makers state none.
  2. Run it all night, every night. EPA: "The longer the air cleaner runs, the more air it filters." Close the bedroom door so it cleans one room, not the hallway.
  3. Put it where air can move. A foot or two from the wall and away from the bed's headboard, so it pulls in room air, not the curtain. Point the outlet across the room, not at your face.
  4. No ozone. EPA: "Avoid portable air cleaners ... that intentionally produce ozone. Ozone is a lung irritant." Every pick here is on California's (CARB) tested list.
  5. Check the lights. Most bedroom models have a sleep mode that turns the fan down and dims or turns off the display. Read the manual before you buy if light bothers you; makers rarely state it.

03 / Every one in stock

All 17 certified, ozone-tested purifiers we could buy today

All 17 certified, ozone-tested purifiers we could buy today: certified room size, smoke CADR, filter, maker noise and Amazon price
PurifierRoom (sq ft)Smoke CADRFilterLow-speed dBPriceBuy
Certified for 300+ sq ft: room to run quietly in most bedrooms
KNKA APH4000 350 226 HEPA-type + carbon — $99.99 Buy
Dreo Macro Max ASsold by Amazon 456 294 True HEPA — $159.99 Buy
Honeywell HPA4300Bsold by Amazon 354 229 True HEPA — $159.99 Buy
Winix T810sold by Amazon 418 270 True HEPA — $175.99 Buy
Winix 5510sold by Amazon 392 253 True HEPA + carbon — $179.99 Buy
Levoit Vital 200Ssold by Amazon 388 250 HEPA-type 23 $189.99 Buy
Winix AT40sold by Amazon 410 265 True HEPA + carbon — $209.33 Buy
Wozoyo Pure Air PA6 563 363 True HEPA + carbon 22 $249.99 Buy
Levoit Core 600Ssold by Amazon 606 391 HEPA-type 26 $269.99 Buy
Whirlpool WP500 509 328 True HEPA — $274.49 Buy
Whirlpool WPPRO2000 529 341 True HEPA — $349.99 Buy
Certified for 200 to 299 sq ft
Levoit Core 300sold by Amazon 222 143 HEPA-type 24 $84.99 Buy
Dreo DR-HAP009ASsold by Amazon 225 145 True HEPA — $107.93 Buy
Certified for under 200 sq ft
Dreo 338sold by Amazon 178 115 True HEPA 18 $59.98 Buy
Wozoyo Pure Air PA2 116 75 True HEPA + carbon — $67.99 Buy
GermGuardian AC4825Esold by Amazon 153 99 True HEPA — $119.99 Buy
GermGuardian AC5250PTsold by Amazon 189 122 True HEPA — $149.99 Buy

Room size and smoke CADR are AHAM-certified. Low-speed noise is the maker's stated figure; a dash means the maker states none. Every unit here is on CARB's list. Listings in a paid campaign are left out. Prices read live November 4, 2026.

04 / Questions

Frequently asked

What size air purifier do I need for a bedroom?
For a 12 × 14 ft bedroom (168 sq ft), EPA's chart asks for a smoke CADR of about 109 on high. To run it quietly at night, pick one AHAM certifies for close to twice your room, around 294 sq ft or more. The Levoit Vital 200S is certified for 388.
Is it OK to run an air purifier all night while I sleep?
Yes. EPA says the longer an air cleaner runs, the more air it filters. Pick one with no ozone (CARB's list) and run it on a quiet speed with the door closed.
How quiet is quiet enough?
EPA says about 50 dB is the sound of a modern refrigerator. The makers of our top picks state 23 dB (Levoit Vital 200S) and 18 dB (Dreo 338) on the lowest speed. Only 5 of the 17 purifiers here have a noise figure from their maker.
Should the purifier be close to my bed?
Near, not on top of it. Keep it a foot or two from walls and furniture so air can flow in, and aim the outlet across the room.
Do I need a true HEPA filter in a bedroom?
It helps for allergies: AHAM files some units as true HEPA. But the number that tells you how fast it cleans is CADR. A unit with a high CADR and a HEPA-type filter can clean a room faster than a small true HEPA one.
Do bedroom air purifiers make ozone?
Some ionizer or plasma units can. EPA says to avoid ones that intentionally produce ozone. Every pick here is on the California Air Resources Board list of air cleaners tested for ozone.
How much do filters cost?
For the Levoit Vital 200S, the genuine filter is $49.99 on Amazon today and lasts 6 to 12 months by the maker's schedule: about $100 a year.

References

Sources

6 references · prices on November 4, 2026
  1. 1

    U.S. EPA: Guide to Air Cleaners in the Home

    Read October 22, 2026. Sizing chart (65 CADR per 100 sq ft); "An air cleaner will filter less air if it is set at a lower speed."; noise "around 50 decibels (dB) is roughly the operating noise of a modern refrigerator"; avoid ozone.

  2. 2

    AHAM Verifide: Air Filtration Standards (the 2/3 rule)

    Read October 20, 2026. "the CADR of your air cleaner should be equal to at least two-thirds of the room's area."

  3. 3

    AHAM Verifide directory of certified room air cleaners

    Smoke, dust and pollen CADR, certified room size and ENERGY STAR for every purifier on this page.

  4. 4

    California Air Resources Board: list of CARB-certified air cleaning devices

    Read October 20, 2026. Certification covers ozone (0.050 ppm limit) and electrical safety, not cleaning performance.

  5. 5

    Maker pages: noise ratings and filter schedules

    Each maker's own page or manual, read October 13 and 20, 2026. Noise shows only where the maker states it.

  6. 6

    Amazon listings: price, seller and stock

    Read live on November 4, 2026. A price shows only if the listing could be bought that day.