Room Exhaust Fan Calculator

Size of ventilation fan.

Room exhaust fan calculator.

Calculate size of ventilation fan for bathroom of 10 foot long 15 foot width and 10 foot height. Other options for bath fans include lights heaters and even humidity sensors. Measure the floor of the area example 3 feet by 4 feet and multiply this by how tall the area is example 8 feet. If you have any questions regarding cfm s air exchanges needed the calculator or which exhaust and or supply fans may be right for your building please call us at 866 727 1060 exhaust intake air ventilation guide based on 0 static pressure cfm room volume minutes per air exchange room volume l x w x h room dimensions.

Multiply the width and length of your grow room times the height to get the total cubic feet. Foot from the table air changing rate ach for bathroom 8 times hour. You want to exhaust all the air. The higher the bath fan rating the more air can be vented out of the bathroom which means less moisture and mold build up.

So here s how you calculate the cfm rating for your fan. For example a 7 ft x 10 ft 2 1 m x 3 m bathroom has a floor area of 70 square feet 6 5 square meters. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Area of the room length x width x height area of the room 10 x 15 x 10 1500 cub.

Our grow room ventilation calculator is just what you need to grow kick ass marijuana plants. In this example you would have 3 times 4 times 8 which equals 96 cubic feet. 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. Ventilation is often over looked but it s vital to healthy plants.

You can jump right into the ventilation calculator by plugging in the volume of your grow op lxwxh or you can keep reading to learn about cfm and how fast you should be replacing. For a rectangular bathroom this is done by multiplying the width and length. Run the fan for 15 to 20 minutes after showering or bathing to expel all the excess moisture. Calculate or enter the square footage of the attic or area to be vented.

Using a decibels meter with the major brands of exhaust fans sold at hydroponics stores i ve discovered the quietest brand of fan is the hyper fan stealth. This page is designed to be a general guide for selecting an exhaust fan based on the size of the room and the type of application the fan will be used for. When installing a vent fan make sure there s at least a 1 2 gap under the bathroom door to allow fresh air to enter the room when the fan is running. The bath fan calculator is standard guide to help you find the minimum fan rating for your specific bathroom.