Decoding Industry Acronyms: CADR



CADR. Not the sexiest acronym but it’s an important one in the air purification world. CADR means “clean air delivery rate.” At The Pure Company, we get all excited about scientific acronyms like that and geek out about product improvements we can make based on better purification methods. You, on the other hand, might not get quite as elated as we do. “Why does CADR matter?” you might be thinking. Let us explain!

CADR Rating Explained

Clean air delivery rate was developed to measure the performance of residential air purifiers. The rating refers to the cubic feet of air purified by the device each minute. Simply put, it tells you how effective the air cleaner is in minimizing the pollutants in your home. The higher the air purifier rating, the more effective the air purifier is at cleaning your indoor air. (A clear case of bigger = better!) Because rating numbers equate to speed, higher ratings mean the air purifier is faster at cleaning the air, while lower ratings indicate a slower cleaning rate.

How is CADR Tested?

CADR determined by the ANSI/AHAM AC-1 test. To break that down into human-speak: the air purifier is first placed in a 1,008 cubic-foot testing chamber, which is the size of a typical house room. Next, contaminants in the room are measured, and then the air purifier is run for 20 minutes. After this, particles are measured in the testing chamber to determine how well the air purifier removed the particles from in the air.

Why Should You Care?

CADR is a great way for people to compare air purifiers. Our Large Room Air Purifier has a CADR of 205. Without getting into the math, it basically means our air purifier is very efficient and exceeds the CADR of many other models. 

So, with all that explained, you now know more than the average person does about air purification ratings (take a bow!) and industry acronyms. Got questions? Send them our way and we’ll be happy to answer them!