9800

Per AHAM's recommendations on wildfire smoke, particulate Smoke Clean Air Delivery Rate (CADR) should equal a room's area at minimum. So a 196 sq. ft. room with an 8 ft. ceiling needs a Smoke CADR of 196 CFM or greater. If your ceiling is higher than 8 ft., calculate by volume first. As a hypothetic

C909 all day long. It has a MUCH higher CADR (Clean Air Delivery Rate). The MA-25 is not comparable at all. I have several C909s in my classroom and office. They've been totally reliable and I think the C909 is one of the best bang for the buck air filters on the market. Plus, with Costco you get a

They're not great to use if the inside is very humid... but if that's not an issue it's definitely worth getting one or two. Get a larger one if you can, like a Winix 9800 (cheap filters and large treatment space) or Coway 400 and run it on the highest setting you can handle noise wise... don't use

Winix 9800 its like an upgraded 5510 / 5500-2 (older ver goat)or if you have a costco Winix c909

After three days of constant indecision I think I’m proceeding with the Winix 9800 or C909, I cannot fathom going through what you did, being my first air filter and paranoid about toxic anything.

Yep, I frequently do elsewhere especially since I own one. But the C909 isn't on Amazon in the USA. The Winix 9800 is the same machine performance-wise with a different front grille/cover.

It depends entirely on room dimensions (length x width x height). See Rule 4: Information For Air Purifier Requests or the AutoModerator comment where it's repeated. For wildfire smoke conditions, the particulate Smoke Clean Air Delivery Rate (CADR) should equal your room's area at the very least, a

Best overall: IQAir HealthPro Plus This is widely considered the gold standard for portable whole-home air cleaning. It uses HyperHEPA filtration that captures extremely fine particles, making it ideal for allergies, smoke, and asthma. It’s powerful, built for long-term use, and consistently ranks a

Best overall: IQAir HealthPro Plus This is widely considered the gold standard for portable whole-home air cleaning. It uses HyperHEPA filtration that captures extremely fine particles, making it ideal for allergies, smoke, and asthma. It’s powerful, built for long-term use, and consistently ranks a

Best overall: IQAir HealthPro Plus This is widely considered the gold standard for portable whole-home air cleaning. It uses HyperHEPA filtration that captures extremely fine particles, making it ideal for allergies, smoke, and asthma. It’s powerful, built for long-term use, and consistently ranks a