What is AHAM’s Clean Air Delivery Rate (CADR)?

The AHAM seal lists three Clean Air Delivery Rate (CADR) numbers for common pollutants, and is usually found on the back of an air cleaner’s box. There are separate ratings for:


How Consumers Use CADR Numbers to Compare Air Cleaners

It’s recommended that consumers compare CADR numbers from different manufacturers and air cleaner products. Once a consumer has narrowed down air filters by the AHAM-suggested room size, he or she can compare the dust, smoke and pollen CADR numbers. If the units share the same ratings, consumers know that their air-filtering performance is similar.

How Manufacturers Use CADR Numbers

When you participate in the CADR program, you show confidence in your product’s performance. The CADR seal shows retailers and consumers that you stand behind your product’s efficacy. AHAM’s independent, third-party testing also provides a consistent product measurement system that you and your customers can trust.