The 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.

CADR, the Clean Air Delivery Rate, is a metric that was developed as a way of measuring the performance of air purifiers for home. The CADR rating reflects the volume of air in CFM (cubic feet …

CADR rating measures how much clean air an air purifier delivers per minute, measured in cubic feet per minute (CFM) or cubic meters per hour (m³/h), for three specific pollutants: dust, pollen, and …

Sep 22, 2025 · With CADR ratings of 450 for pollen, 434 for dust, and 455 for smoke (exceeding CADR’s top margin by a bit), it provides exceptional air purification for any pollutant it encounters.

Jun 3, 2025 · CADR or Clean Air Delivery Rate is based on one complete change of air per hour, meaning all the air in the room is purified each hour. CADR = 1 ACH or Air Changes per Hour

Aug 18, 2025 · Learn what CADR rating means for air purifiers. Complete guide covers testing, room size calculations, energy efficiency & how to choose the right CADR.

The CADR score is calculated by measuring how much faster a purifier removes particles from the air compared to how quickly they would naturally drop and settle on surfaces.

Dec 6, 2024 · One critical factor to consider is the CADR rating—an industry-standard measure of how effectively an air purifier cleans the air. My guide breaks down what CADR means, why it matters, …

Jul 7, 2025 · Discover what CADR (Clean Air Delivery Rate) means, how it measures air purifier performance, and how Alen uses it to deliver cleaner indoor air.

Apr 11, 2025 · The CADR rating is an important factor in determining the effectiveness of air purifiers. The Clean Air Delivery Rate (CADR) is a measure of an air purifier’s efficiency in removing specific …