Industrial Exhaust Fan Size Calculator

Calculating cfm s depend on the airspace in your greenhouse so multiply the width by the height by the length to get the total air volume first.

Industrial exhaust fan size calculator.

To use this cfm calculator input the type of room you have for your application. Use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room. Cfm exhaust fan estimator calculator. This could be selecting an exhaust fan for a warehouse or garage for example.

A pressure differential between the duct and the. Finding high quality low maintenance exhaust and air movement equipment can save money for agencies and business owners. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. 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.

Fan static pressure is measured in inches of water gauge. 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. Before you install bathroom kitchen or garage exhaust fans start here to determine what you need to proceed for proper ventilation. A ventilation fan should meet at least the minimum size.

Next input the dimensions of the room and click calculate cfm. The exhaust fan drawing below illustrates how static pressures are measured in ductwork with a manometer. A list of suitable exhaust fans will then appear for your application. 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.

The cooling rate for most industrial fans are based on the cfm or cubic feet per minute that measures how much air the fan pushes through in a measured time. 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. A ventilation fan should meet at least the minimum standard cfm to provide proper exhaust. Use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room.

Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. 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. Static pressure in fan systems is typically less than 2 sp or 0 072 psi.