Smart Air S (also known as Smart Air Sqair) Air Purifier

Shipping calculated at checkout.

Perfect for bedrooms and other living areas inside the home. Cleans the air in a 21' x 21' room FOUR times per hour or 900 square feet every 30 minutes.

Uses HEPA filter with 99.95% efficiency at removing both .3-micron and 0.07 micron airborne particles.

Includes a carbon filter to remove odors, volatile organic compounds (VOC's), paint fumes, chemicals and smoke.

Meets California ozone emissions limits. CARB, UL, CSA certified.

Customer Reviews

Based on 19 reviews
Karen Cole
I love my Smart Air S

I have had this air purifier for a couple of years. I keep it running in my bedroom because that is where we sleep and so do our large dogs. My hubby went to change the filter on his cpap device and the filter was still white and clean! Thank you Smarter HEPA!

Thomas W
Just Right

Perfect for using in small offices for counseling. Helps with soundproofing in a great way. Controls are minimalistic and easy disassembled.


As a neurodistinct person with smell and sound hypersensitivities, I have tried maaaaany HEPA filters. My search is finally over! Efficient, quiet, beautiful, and effective--I LOVE this product. And SmarterHEPA is a B Corp! Count yourself lucky to have found this gem...I know I do.


Simple to set up and whisper quiet. It's made a noticeable difference to the air quality and dust levels in our old home. Would definitely recommend to others to purchase this sleek little air purifier.

Brent F.
Great so far

This is my first ever experience with an air purifier. Bought it to deal with odor from kitty litter so added the activated carbon filter. Not a dirty litter box, but the grainy smell from soy based litter. It has definitely helped with the odor. I did not anticipate how much reduction in dust we would get. Very pleased so far.

Breathe better with clean air from Smart Air S!

The Smart Air S is a no-nonsense purifier designed from the ground up to do one thing exceptionally well: clean air.  Its elegant style blends with any décor making it perfect for bedrooms, living rooms, and other rooms in the home – at an unbeatable price. The model S cleans a 900 sq ft space in 30 minutes and it can clean a 21’ x 21’ space in just 15 minutes.

The Smart Air S is one of the most cost effective air purifiers in the world, and it’s quieter too. On high, The Smart Air S sounds like soft rainfall. It’s up to 13 decibels quieter than many of the most popular air purifiers, yet provides more clean air and costs less.


- Clean Air Delivery Rate (CADR) of 315 m3/hr 

- 900 sq ft filtered every 30 min or a 21'x21' room filtered 4 times per hour

- Noise level: 23 - 43 - 52 dB

- Power consumption (Watts): 6 - 18 - 38

-Dimensions: 13"x13"x14.3", Weight: 10 lbs

- Uses a HEPA filter made with polypropylene (PP) and polyester (PET) with a 9-12 month life span

- Includes a carbon filter to remove odors, smoke and volatile organic compounds (VOC's)

How to Choose the Right Air Purifier for You.

Our experts take the time to explain the technology behind our award-winning air purifiers.