What Size Bathroom Fan Do I Need
Choosing the right cfm size for a bathroom exhaust fan standard fan sizing.
What size bathroom fan do i need. Sample bathroom dimensions and required fans. 8000 cubic feet 60 minutes 133 33 cfm. Purchase a bathroom fan with the required cfm rating or higher.
If your bathroom is larger than 100 square feet tally the cfm requirements for the individual fixtures to. Sizing for large bathrooms. That gives us 133 3 cfm.
Ft in the room. 10 x10 x10 bathroom 1000 cubic feet. 1000 cubic feet x 8 air changed per hour 8000 cubic feet.
To arrive at your required cfm simply divide your bathroom s volume by 7 5. Let s say the length of your bathroom is 3 metres the width is 2 metres and the height is 2. A bathroom with a higher ceiling would require a larger fan.
To remove more moisture from the air when showering use a bit larger fan 80 110 cfm. In general for rooms with 8 foot ceilings. Use a tape measure to measure the length width and height of your bathroom.
50 cfm jetted or spa tub. A 50 square foot or smaller bathroom needs a 50 cfm fan. How to size an exhaust fan for a bathroom measure the dimensions of your bathroom.
For standard square or rectangular bathrooms. 150 cfm bathroom fan will be required. So for example if your bathroom is 54 metres square you will need a 54m3 hr fan.
Next use your dimensions to calculate the total volume of your bathroom. In order to know what size bathroom exhaust fan you need refer to the cm3 cubic metres squared measurement of your fan. 50 cfm standard bathtub.
For bathrooms over 100 square feet exhaust fans can be sized according to the number of. Bathroom vent fans are rated for the amount of air they can move measured in cubic feet per. For bathrooms between 50 and 100 square feet estimate approximately 1 cfm per square foot.
To use our fan selection tool located in the search area to the right of every page this measurement needs to be in metres. 8 m the volume. 3 x 2 x 2.
Just add up the numbers below that correlate with each fixture in your bathroom to determine the appropriate fan size for the space. First you need to measure the size of your bathroom. All you need to do is select the application from the dropdown enter the size of the room and we will provide you with a general capacity range m3 hr that you should be looking to achieve from the extraction fan.
So in your case a 50 cfm fan should work. If your bathroom has an 8 ceiling the cfm rating for your fan should be as least as high as the number of square feet 5 x 7 35 sq. For example a bathroom with a volume of 1000 cubic feet 28 3 cubic meters needs a fan capable of moving 1000 7 5 or 133 cfm 3 8 cubic meters per minute.
Obviously they do not make an exhaust fan that size so we would round up to a 150 cfm fan.
