Enter a competitor brand manufacturer and model series to help you cross reference to the right Greenheck product. Once possible Greenheck replacement product(s) appear in the grid below, product filtering to insure cross reference for correct base/panel size, voltage and phase and other important considerations may be completed using navigation to the left of the products.
Use the calculator to determine the Air Exchange (CFM) required to adequately ventilate an area.
Enter information into the fields below to calculate the required airflow per fan.
To calculate the CFM required to adequately ventilate an area, we divide the room volume by the appropriate “Minutes per Change” value.
[CFM] = [Room Volume] / [Min./Chg.]
Airflow (CFM) per Fan
*
Starred items represent required fields.
Calculate Static Pressure (SP)
Use the calculator to determine the amount of static pressure the fan must overcome.
The pressure generated by fans in ductwork is typically very small. An accurate measurement of static presure is critical to proper fan selection however. Static pressure in fan systems is typically less than 2" SP, or 0.072 Psi.
The amount of static pressure that the fan must overcome depends on the air velocity in the ductwork, the number of duct turns (and other resistive elements), and the duct length. For properly designed systems with sufficient make-up air, the guidelines in the table below can be used for estimating static pressure.
Static pressure
*Starred items represent required fields.
Static Pressure Guidelines
Non-Ducted 0.05" to 0.20"
Ducted 0.20" to 0.40" per 100 feet of duct (assuming duct air velocity falls within 1,000 to 1,800 feet per minute)
Important: Static pressure requirements are significantly affected by the amount of make-up air supplied to an area. Insufficient make-up air will increase static pressure and reduce the amount of air that will be exhausted. Remember, for each cubic foot of air exhausted, one cubic foot of air must be supplied.
Model SBE, belt drive, sidewall propeller exhaust fans are designed for commercial and industrial applications where high volumes of air and low static pressures are required.
56 x 56 inch fan panel with prepunched mounting holes for easy installation and precise alignment
48 inch, 5-blade galvanized steel propeller
Multiple motor and drive options available to meet any performance and application need
Model SAF is a filtered supply fan designed to provide non-tempered make-up air to commercial or industrial buildings, including commercial kitchen applications. Fresh outdoor air is supplied to replace air lost through hood exhaust or general building ventilation.
34.5 x 34.5 inch base with prepunched mounting holes for easy attachment to roof curb
Multiple motor and drive options available to meet any performance and application need
Model SP-VG, bathroom exhaust fan features Vari-Green EC motor technology, allowing for increased energy savings. Units operate at a constant CFM up to 0.875 in. wg. And provide continuous or intermittent ventilation while maintaining extremely low sound levels.
Motion and humidity sensing grille options available
Energy efficient Vari-Green motor
ENERGY STAR rated
Industry-leading low sound levels
Units operate at a constant cfm up to 0.875 in. wg. and provides continuous or intermittent ventilation while maintaining extremely low sound levels
Model SP-VG, bathroom exhaust fan features Vari-Green EC motor technology, allowing for increased energy savings. Units operate at a constant CFM up to 0.875 in. wg. And provide continuous or intermittent ventilation while maintaining extremely low sound levels.
Motion and humidity sensing grille options available
Energy efficient Vari-Green motor
ENERGY STAR rated
Industry-leading low sound levels
Units operate at a constant cfm up to 0.875 in. wg. and provides continuous or intermittent ventilation while maintaining extremely low sound levels
Model SP-VG, bathroom exhaust fan features Vari-Green EC motor technology, allowing for increased energy savings. Units operate at a constant CFM up to 0.875 in. wg. And provide continuous or intermittent ventilation while maintaining extremely low sound levels.
Energy efficient Vari-Green motor
Industry-leading low sound levels
Units operate at a constant cfm up to 0.875 in. wg. and provides continuous or intermittent ventilation while maintaining extremely low sound levels
Model SP-A direct drive, ceiling mounted fan is designed to provide the lowest sounds levels for bathroom exhaust. Units feature an insulated housing, lighted grille and are ideal for residential, multi-family or hotel applications.
The class of motor insulation for a given motor. The temperature capabilities of each insulation class is defined as being the maximum temperature at which the insulation can be operated to yield an average life of 2, hours (A = 15?C, B = 135?C, F =
Indicates the space relationships of windings and changing values of the recurring cycles of AC voltages and currents. The most common power supplies are either single- or three-phase.
The force that causes a current to flow in an electrical circuit. The voltage of a motor is usually determined by the supply to which it is attached. NEMA requires that motor be able to carry its rated horsepower at nameplate voltage plus or minus 1% al
