How To Calculate Cfm For Bathroom
Standard fan sizing applies to bathrooms that are 100 square feet or less.
How to calculate cfm for bathroom. A fan s power is measured in cubic feet per. Divide the volume of your bathroom in feet by 7 5. To get the total square footage multiply the length of your bathroom by its width. Bathroom vent fans are rated for the amount of air they can move measured in cubic feet per minute or cfm.
Multiply the three measurements from step 1 to determine the cubic footage of the room. Using a tape measure calculate the total volume of your bathroom by multiplying the length times the width. Simply enter the dimensions of your bathroom in the calculator below to determine the minimum size vent fan you need for the bathroom in your home. Bath fan cfm calculator.
Measure the dimensions of your bathroom. Use a tape measure to measure each dimension of your bathroom the length. Calculate the cfm volumetric flow of air at 1 200 rpm. Use our handy online calculator to see what size vent fan you need for your home.
Calculate the floor area of your bathroom. How to calculate the cfm of a room step 1. Also measure the height of the room from the ceiling to the floor. How to size an exhaust fan for a bathroom measure the dimensions of your bathroom.
That s why we developed this handy bathroom vent fan cfm calculator. The volume of the column of air described in step 2 is pi 3 1416 x fan radius squared 0 5 feet squared times the column length in feet. Use a tape measure to measure the length width and height of your bathroom. How to calculate the cfm of a bathroom fan step 1.
To determine the correct cfm calculate the area of your bathroom. Centrifugal blower fan squirrel cage blower. For instance if a room. Measure the room s width and length.
First you have to measure your bathroom dimensions to calculate room volume length x width x height of the room feet divide the number of feet by 60 minutes fans are sized based on the number of recommended air exchanges per hour 60 minutes. For standard square or rectangular bathrooms. The result is the cfm or cubic feet per minute rating. For a rectangular bathroom this is done by multiplying the width and.
Calculate the total volume of your bathroom. Next use your dimensions to calculate the total volume of your bathroom.