Industrial Exhaust Fan Size Calculator

The exhaust fan drawing below illustrates how static pressures are measured in ductwork with a manometer.

Industrial exhaust fan size calculator. 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. Use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room. Fan static pressure is measured in inches of water gauge. Static pressure in fan systems is typically less than 2 sp or 0 072 psi.

This could be selecting an exhaust fan for a warehouse or garage for example. 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. A list of suitable exhaust fans will then appear for your application. 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.

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. 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. The calculator on this page is provided as a general guide designed to help you select an exhaust fan which may be suitable for your needs. To use this cfm calculator input the type of room you have for your application.

One pound per square inch is equivalent to 27 7 sp. Next input the dimensions of the room and click calculate cfm. Cfm exhaust fan estimator calculator. A pressure differential between the duct and the.

Before you install bathroom kitchen or garage exhaust fans start here to determine what you need to proceed for proper ventilation. Commercial and industrial ventilation can be expensive to install or update and finding the right type and size of fan will keep companies and industries in compliance with codes and regulations and make working conditions safe for employees. A ventilation fan should meet at least the minimum size. Finding high quality low maintenance exhaust and air movement equipment can save money for agencies and business owners.

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. 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. Use this table to calculate the cubic feet per minute cfm capacity needed for an exhaust fan in a specific room.