FAQ - What size fan should I buy and what are CFM's?

Choosing the right fan size ensures effective ventilation for your bathroom. CFM, or Cubic Feet per Minute, measures how much air a fan moves in a minute. Proper airflow prevents moisture buildup, mold, and odors, protecting your bathroom and making it a more comfortable space.

We offer bath fans in both 110 CFM and 70 CFM variants. Here’s how to determine the best fit for your bathroom:

1. Measure Your Bathroom Size
   Multiply the length and width of your bathroom to calculate square footage.
   (Example: 8 ft. × 10 ft. = 80 sq. ft.)
2. Consider Ceiling Height
   Adjust for taller ceilings using this multiplier:

While our 70 CFM fans works well for smaller bathrooms (up to 80 sq. ft.) and has a slightly smaller footprint, our 110 CFM variants are the better investment if they are within your budget. It handles humidity more effectively, protects your bathroom’s finishes, and ensures consistent airflow in both small and large spaces.

Choose the variant that best fits your bathroom’s size and needs for fresh, moisture-free air every day!

See our Learning Hub article "Choosing the Right Bathroom Fan Size & Understanding CFM Ratings" for a more detailed overview of these concepts.