COWAY Air Purifiers for Large Room Whole Home Up to 4,253ft², 2 Sets of XL Washable Pre-Filters and HEPA Filters for Dual Purification, AQI, Turbo Mode, Timer, Wheels, 5yr Warranty, ProX(B) vs GermGuardian Air Purifier for Homes with Pets, H13 Pet HEPA Filter, Removes Pet Dander, Dust, Allergens, Smoke, Pollen, Odors, Mold, UV-C Light Helps Reduce Germs, 22 Inch, White, AC4300WPT
Side-by-side comparison based on Reddit community data

#8 in Air Purifiers
Coway
COWAY Air Purifiers for Large Room Whole Home Up to 4,253ft², 2 Sets of XL Washable Pre-Filters and HEPA Filters for Dual Purification, AQI, Turbo Mode, Timer, Wheels, 5yr Warranty, ProX(B)
$999.00
100/100Excellent
100% positive0% neutral0% negative
Pros
- +More effective
- +Filters smoke
- +Filters vocs
- +Carbon filter
- +Made for large spaces
“More recently, I bought a Coway Airmega ProX, which seems to be more effective for me. It’s a big filter that is made for large spaces and it filters smoke and VOCs with a carbon filter.”

#9 in Air Purifiers
Germ Guardian
GermGuardian Air Purifier for Homes with Pets, H13 Pet HEPA Filter, Removes Pet Dander, Dust, Allergens, Smoke, Pollen, Odors, Mold, UV-C Light Helps Reduce Germs, 22 Inch, White, AC4300WPT
$99.99
100/100Excellent
100% positive0% neutral0% negative
Pros
- +Helps with allergens
- +Helps with cannabis smoke
- +Circulates air
- +Gets cooking smells out
- +Gets cat dander out
“I have germ guardian purifiers with pet filters that I’ve had for years and they help a lot with allergens and I also smoke cannabis and it helps with that too”