Bathroom Fan Size Calculator

Building regulations part f 1995 england wales.

Fanfiction boku no hero academia. 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. Cubic volume75 cfm necessary. Lets say the length of your bathroom is 3 metres the width is 2 metres and the height is 2.

To use our fan selection tool located in the search area to the right of every page this measurement needs to be in metres. The bath fan calculator is standard guide to help you find the minimum fan rating for your specific bathroom. Toilet 50 cfm shower stall 50 cfm whirlpool 100 cfm 200cfm bathroom exhaust fan.

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. Sizing for large bathrooms for bathrooms over 100 square feet exhaust fans can be sized according to the number of fixtures in the room. Enter bathroom length ft.

Bathroom fan exhaust size calculator. For example a 7 ft x 10 ft 21 m x 3 m bathroom has a floor area of 70 square feet 65 square meters. Suggested cfm for the bathroom is based on cycling all the air in the bathroom 8 times per hour.

Enter bathroom height step 4. The formula to calculate bathroom exhaust fan size reads as follows. The minimum allowed fan size is 50 cfm so if your bathroom is for example only 42 square feet you still need a 50 cfm fan.

Enter bathroom width ft. For a rectangular bathroom this is done by multiplying the width and length. Calculate the floor area of your bathroom.

First you need to measure the size of your bathroom. Why you need to have the proper size extractor fan. Press calculate minimum suggested bath fan cfm.

Bathroom extractor fans are mandatory in any bathroom without a window and still highly recommended in bathroom with windows. When installing a vent fan make sure theres at least a 12 gap under the bathroom door to allow fresh air to enter the room when the fan is running. Bathroom vent fans are rated by the cubic feet per minute cfm of air they move and should be sized to replace the air in the room at least eight times an hour.

Minimum size fan allowed extract table 1 to see official ventilation regulations. Bathroom 15 litres second. Ft in the room.