Airmega’s Clean Air Delivery Rate
CADR and CFM are two units of measurement that express an air purifier’s efficiency in cleaning the air. The two units are utilized to determine the maximum room coverage an air purifier can provide.
The Association of Home Appliance Manufacturer’s standard for measuring an air cleaner’s efficacy is called the Clean Air Delivery Rate, often shortened to CADR. CADR indicates the volume of filtered air an air purifier delivers, with separate scores for tobacco smoke, pollen and dust. The higher the CADR number for each pollutant, the faster the unit filters the air. A good CADR rating should equal at least two-thirds of the room's area. So, for a room that is 99 square feet, a good CADR rating for an air purifier would be at least 66.
Another measurement used to explain how fast an air purifying unit can filter the air is CFM. CFM stands for cubic feet per minute, and this number provides insight into the efficiency of the air purifier, namely how many cubic feet per minute this air purifier can scrub. At a high level, the biggest difference is that CFM is believed to provide a more accurate, and transparent reading on an air purifier's effectiveness to clean the air.
Using CADR and CFM to calculate room size
Before jumping into the math, it’s important to keep in mind that these calculations are based on the assumption that your room has an 8-foot high ceiling and your unit is running at its highest fan speed.
How big of a room can my air purifier clean?
Method 1 - Using CADR to calculate maximum room size
Maximum Room Size = CADR x 1.55
Using the Airmega AP-1512HH Mighty as an example, calculate room size as follows. This product has a CADR of 233. If we plug that into the above formula, we get a maximum room size of ~361 ft2.
This means that in 12.5 minutes, the Mighty can fully clean the air in a 361 ft2. room on high fan speed. And, the longer it runs, the more air can clean! In just 30 minutes, the Mighty can fully clean the air in a room up to 874 ft2 in size.
Method 2 - Using CFM to calculate maximum room size
Maximum Room Size = (CFM x 60) ➗ (ACH x Room Ceiling Height)
Using the Airmega 400 as an example, calculate room size as follows. This product has a CFM of 416, and we’ll assume an ACH (air change rate per hour) of 4, and a ceiling height of 8 feet. If we plug that into the above formula, we get a maximum room size of 780 ft2.
This means that in 15 minutes, the Airmega 400 can fully clean the air in a 780 ft2. room on high fan speed. And, in just 30 minutes, it can clean a space up to 1560 ft2 in size.
Coway Airmega air purifiers
Coway provides a huge range of products with varying coverages to fit any space, from living rooms and bedrooms to office buildings and retail spaces. Airmega offers powerful purification with intuitive features like Smart Mode, Eco Mode, Sleep Mode and more. To learn more about Airmega and shop for one of your own, visit cowaymega.com.