About CADR and CFM

CADR (Clean Air Delivery Rate) is an important metric for air purifiers. This metric helps determine the efficiency and effectiveness of an air purifier in cleaning the air in your home or office.
What is CADR?
CADR, which stands for Clean Air Delivery Rate, measures the amount of clean air an air purifier can deliver in a specific amount of time. It is usually measured in cubic meters per hour or cubic feet per minute and indicates how quickly an air purifier can clean the air in a room. The higher the CADR rating, the more effective at removing pollutants from the air.
What is CFM?
CFM, which stands for Cubic Feet per Minute, is a CADR measurement unit, meaning the air volume of an air purifier can be cleaned in one minute. It should be noted that many merchants confuse these two measurement units(CFM and m3/h), making it difficult for people to compare the performance of air purifiers. there is a conversion formula between CFM and CADR(m3/h), where 1CFM = 1.7m3/h. （This formula comes from AHAM）
Why is CADR so important?
When choosing an air purifier, understanding CADR is essential, because these metrics help you determine the performance and suitability of the air purifier for your needs. A higher CADR rating indicate that the air purifier is more efficient at removing pollutants and cleaning the air in your room.
When comparing different air purifiers, look for models with higher CADR ratings to ensure that you are getting an effective and efficient air purifier. You can find the CADR rating from energystar offical website.
By considering these metrics, you can make an informed decision and choose the right air purifier for your home or office.
At last, I would like to share the formulas:
Suitable Area(ft2) = 1.55 * CADR(CFM)
Suitable Area(m2) = 0.085 * CADR(m3/h). (These formulas also come from AHAM).
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