Cadr Air Purifier Ratings
Cadr the clean air delivery rate is a metric that was developed as a way of measuring the performance of residential air purifiers the cadr rating reflects the volume of air in cfm cubic feet per minute that is cleaned of particles of certain sizes.
Cadr air purifier ratings. Clean air delivery rate cadr clean air delivery rate cadr ratings were developed by the association of home appliance manufacturers aham in the 1980s as a way for the general public to navigate the claims made by air purifiers. The higher the number. Air purifier cadr ratings. The high airflow rate is capable of cleaning a 775 square feet of rooms three times an hour.
Aham is an organization representing household appliance companies. So if the air purifiers draws 100 watts on the high fan speed it must have a dust cadr of at least 200. Combined with 360 degree air intake and its powerful motor the blueair blue pure 211 is an air purifier that performs brilliantly and has the cadr ratings to back it up. Aham suggested room size for this air purifier is 465 square feet where you will get 5 air changes per hour.
To achieve the energy star designation the air purifier must have a dust cadr rating that is at least 2 times the power on the highest fan speed.