Commercial Products  >  Fans & Ventilators


Rooftop Fan

Multi-story bathrooms, kitchens and dryers can rack up unnecessary operating costs if there’s not a good rooftop ventilation solution in place. Why risk the added time and cost? The ENERVEX EFV Rooftop Fan makes venting easy – even if you’re dealing with multiple appliances on multiple floors, duct design challenges, or code violations.

This virtually maintenance-free rooftop fan is a unique exhaust solution in multi-story buildings. Install the EFV fan at the exhaust duct termination point to ensure a negative pressure in your entire duct system. It’s versatile, too, able to be mounted vertically or side-wall vented. You can also use the EFV for other exhaust applications with high-temperature exhaust air.


  • Cast aluminum housing & impeller with an easy-to-clean clam-shell design
  • Backward-curved impeller
  • Direct-drive, variable-speed motor, TEFC, Class H
  • Optional: Electrically commutated motor for optimal performance and efficiency
  • Temperatures up to 575°F/300°C
  • Extremely low noise level
  • Complete fan and control package available from a single manufacturer
  • Low operating costs


Capacities 0-4,000 CFM (0-6,800 m3/h)
Material Cast Aluminum Housing and Impeller
Drive Backward-curved Impeller
Motor Variable Speed, TEFC, Class H
Max. Temp 575°F (300°C)
Warranty 2-Year Factory Warranty
10-Year Warranty Against Corrosion Perforation
Listings UL 705 Standard for Power Ventilators
CSA C22.2 No. 113-12 Fans and Ventilators, Edition 9

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EFV Rooftop Fan—multi-use centrifugal exhaust fan used for dryer/building exhaust
MSC EDrive Motor Controller—controls the speed of fans and ventilators
MSC Motor Controller

A full featured, industrial-type motor controller programmed specifically to control and adjust the speed of ENERVEX fans and ventilators using Electronically Commutated (EC) Motors or Induction Motors. 

MEC 24 Modulating Pressure Control—simple modulating fan control for multi-story applications
Modulating Pressure Control (multi-story)

A modulating pressure control that provides superior pressure control in single- or multi-story building applications such as clothes dryers, bathrooms and kitchens.