Cadr Air Purifier Rating

The association of home appliance manufacturers aham seal usually found on the back of an air cleaner s box will list three cadr numbers one for tobacco smoke one for pollen and one for dust the cadr number indicates volume of filtered air delivered by an air cleaner.

Cadr air purifier rating.

The cadr gives a relative performance indication. The high airflow rate is capable of cleaning a 775 square feet of rooms three times an hour. So how does this translate. The cadr rating reflects the volume of air in cfm cubic feet per minute that is cleaned of particles of certain sizes.

The cadr scale goes up to 400 450 depending on the particle size measured. Clean air delivery rate cadr is a figure of merit that is the cubic feet per minute cfm of air that has had all the particles of a given size distribution removed. This is the clean air delivery rate and we explain the cadr rating here. It has among the highest cadr ratings for smoke dust and pollen of the.

The higher the tobacco smoke pollen and dust numbers the faster the unit filters the air. Aham suggested room size for this air purifier is 465 square feet where you will get 5 air changes per hour. The air doctor purifier has a decent ach rating of 3x ach. In the us cadr is measured in cfm cubic feet per minute.

Cadr the clean air delivery rate is a metric that was developed as a way of measuring the performance of residential air purifiers. The association of home appliance manufacturers created a metric for this. Dust cadr can be as high as 400 and the pollen cadr and smoke cadr can be as high as 450. The cadr rating is meant to be a standard represented by a numerical value that allows consumers to measure the effectiveness of stand alone air purifiers cadr ratings are not used for whole house systems.

The aham certified seal lists a rating for tobacco smoke pollen and dust removal and a rating for room size. Cadr stands for clean air delivery rate and is one of the most important ratings that you must check when considering an air purifier. This means that the air doctor purifier can clean the air three times per hour in a room up to 900 sq. It is mainly used to determine room size coverage of the air purifier.

The rule of thumb to keep in mind is that the cadr ratings of the air purifier you are considering must be atleast 2 3 of the area of your room when measured in square feet. On that page we explain how to make sure an air purifier can fully clean the square footage of your room or home. Official air purifiers guide learn why some air purifiers work and some don t.