- 1. Space
- 2. Use
- 3. Filter Type
Don’t be fooled by air purifiers that try to impress you with Air Changes Per Hour (ACH) or Filter Efficiency ratings. Only Clean Air Deliver Rate (CADR) is the industry standard for measuring air filtration. So what CADR do you need for your space? Just let us know where you’ll be using your air purifier, and we’ll figure out the rest.