Air delivery rate or CADR is the most significant factor when you choose an air purifier for a specific need on your room.
For different sized room and air situation, you need to choose your air purifier by CADR. This advanced CADR calculator will help you to find out the actual air delivery rate (CADR) you required before buying an air purifier.
CADR Calculator for Air Purifier:
#ProTip: Always select the CADR a little bit higher than the calculated value to get better results.
CADR or Clean Air Delivery Rate has expressed the efficiency of an air purifier like horsepower for cars. It determines how much volumetric air can be filtered by an air purifier in a minute. For example, A 200 CADR means it can filter 200 cubic feet of air per minute (cfm) on its highest fan speed. Though cubic feet per minute (cfm) is the common practice to express CADR, some air purifier manufacturers use cubic meter per hour. So, be sure about it before buying one.
The term ‘clean’ means filtered air; however, it depends on the filter type of an air purifier. Like, a HEPA filter can capture airborne particles sizes down to 0.3 microns at 99.97% efficiency. Although there are other factors like the indoor air quality, air circulation throughout the room, air leakage can reduce the cleaning efficiency hence reduce the CADR. That’s why ReviewsofAirPurifiers recommend you to select the air exchange rate (ACH) carefully when calculating required CADR for your unique needs.
The calculation is based on the formula, CADR = [(ACH x L x W x H) / 60] cfm
Should I Care about CADR?
To understanding an air purifier, the CADR rating is the primary factor we need to look at it. To get effective air cleaning, you have to check on other factors like filter types, extra filters, particle sensor, and of course, you have to use it properly. For example, if you need an air purifier to remove smoke and odor, then you must need activated charcoal equipped air purifier. You can check our top picks of air purifiers that can remove smoke efficiently.
What’s about AHAMs CADR Rating?
You may have heard of AHAM certified CADR for air purifiers. AHAM, Association of Home Appliance Manufactures tested and certifies air purifiers with three different CADR rating: tobacco smoke, dust, and pollen. Tobacco smoke CADR represents the efficiency against fine particles, and the pollen CADR represents the efficiency against the larger particles comparatively. You can check the AHAM verified air purifiers list though some air purifier manufacturers test CADR by their own. It is not necessary to have an AHAM certification since it’s an organization of manufacturers.
This advanced and flexible CADR calculator will give you the specific need of CADR for you. Apart from CADR, there are other essential factors to choose and use an air purifier wisely. Follow our one-stop website for air purifier guide who serves you valuable pieces of information about air purifiers you need to know.