Exhaust Fan Size Calculator

This may be helpful as a duct cfm calculator a hvac cfm calculator or an air flow calculator.

Exhaust fan size calculator.

Other options for bath fans include lights heaters and even humidity sensors. This fan calculator is typically used to calculate the cfm or cubic feet per minute of air exchange that may be desired in a building. The general rule is to have an exhaust fan that will completely exhaust the garden area in 5 minutes or less. 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.

This depends on the specific application and the stuffiness moisture or gases in the air. Sizing an exhaust fan use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room. For example a 1000 square foot area may need a cfm exhaust fan of 1000 0 1 100 or 1000 1 1000. The first thing to consider is the size of the garden space you are planning to grow in.

Whether exhausting air or bringing fresh air into a structure the calculation produced should help to figure out the size of fan s required to accomplish the air exchanges needed. 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. By simply inputting into the calculator the dimensions of your room and the type of room application for the fan the calculator will provide you with a suggested general capacity range in cubic metres per hour m3 hr to help narrow down your exhaust. Use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room.

A ventilation fan should meet at least the minimum size. Before you install bathroom kitchen or garage exhaust fans start here to determine what you need to proceed for. Refer to the calculator below for more guidance. The higher the bath fan rating the more air can be vented out of the bathroom which means less moisture and mold build up.

A ventilation fan should meet at least the minimum standard cfm to provide proper exhaust.