Title: How to Understand Air Purifier CADR
Step 1: What is CADR?
CADR stands for Clean Air Delivery Rate, which is a measurement of an air purifier’s efficiency in removing airborne particles from the air. It indicates how quickly and effectively an air purifier can clean the air in a specific room size.
Step 2: Understanding CADR Ratings
CADR ratings are typically provided for three types of particles: dust, pollen, and smoke. Each rating is expressed in cubic feet per minute (CFM) and represents the volume of clean air that the purifier can deliver by removing a specific type of particle.
Step 3: Interpreting CADR Numbers
Higher CADR numbers indicate that an air purifier is more effective at removing airborne particles. For example, if an air purifier has a CADR rating of 300 for dust, it means that it can remove dust particles from the air at a rate of 300 cubic feet per minute.
Step 4: Matching CADR to Room Size
To effectively clean the air in a room, it’s important to match the CADR ratings of an air purifier to the room size. The Association of Home Appliance Manufacturers (AHAM) recommends using an air purifier with a CADR rating that is two-thirds of the room’s area for optimal performance.
Step 5: Calculating Required CADR
To calculate the required CADR for your room, multiply the square footage of your room by 0.75 (for two-thirds coverage). For example, if your room is 200 square feet, you would need an air purifier with a combined CADR rating of at least 150 (200 x 0.75).
Step 6: Comparing Different Air Purifiers
When comparing different air purifiers, look for models with higher CADR ratings for all three particle types (dust, pollen, smoke) if you want comprehensive filtration. Consider your specific needs and choose an air purifier with appropriate CADR ratings based on your room size and concerns about airborne particles.
Understanding the Clean Air Delivery Rate (CADR) of an air purifier is essential for selecting the right model to improve indoor air quality effectively. By following these steps and considering your specific requirements, you can make an informed decision when choosing an air purifier that meets your needs.
