How to Use This Calculator
Enter your room length, width, and ceiling height, then answer questions about your room type, air quality concerns, pets, and sensitivity level. Hit calculate and you’ll get the minimum CADR rating you need, the right filter type for your situation, how many units your space requires, and a full cost breakdown including annual filter replacement.
CADR recommendations are estimates based on room volume and typical pollutant loads. Actual performance varies by model and room layout. Always confirm filter specs and replacement costs with the retailer before purchasing.
Mark Bittman is a public health expert and journalist who has written extensively on food, nutrition, and healthy living. He has a wealth of knowledge to share when it comes to solving problems with appliances. In addition, he can help you choose the right appliances for your needs, optimize their performance, and keep them running smoothly.