Welcome to Solar Powered Soffit Fans LLC


Solar Attic Soffit Vent Fans


Solar Powered Attic Soffit Vent Fans

Attic soffit vents, under the roof eaves and overhangs, are generally recognized as the best type of passive attic ventilation. Solar Powered Soffit Fans are the best type of powered attic ventilation. Solar Powered Soffit Fans blow fresh air horizontally across the bottom of the attic, just above the ceiling, where it matters most. Hot air is forced out of the other attic vents, including soffit vents, reducing the attic temperature and moisture above the ceiling.   No fan or vent holes in the roof to leak. No reason to go on the roof or hire a roofer to install or repair a fan. No reason to go in the attic to install or repair a fan.   No need for an AC electrical power circuit. No need for complex controls. No need for code permits or inspections (typically).  No negative pressure pulling air conditioned air out of the house, or risk of pulling carbon monoxide from fired appliance exhaust into the house. Fewer CFMs needed than roof and gable fans. Use with shingle, tile, and metal roofs without problems. Solar Powered Soffit Fans work with your existing attic vents and improve the attic ventilation and cooling, using free power from the sun. Solar Powered Soffit Fans enhance the performance of existing attic and gable vent fans, ridge vents, gable vents, turbines, J and mushroom vents, etc. For enclosed cathedral ceilings, they can be arranged to move air in each rafter bay in the gap between the roof and the ceiling insulation.   

Solar Crawl Space Vent Fans

CSF 210 Solar Crawl Space Fan

Solar Crawl Space Foundation Vent Fans

Solar Crawl Space Fans exhaust crawl space moisture and odors, using existing foundation vents. Bad air is gently and evenly pulled out of the crawl space through a foundation vent and replaced by fresh air entering through the other foundation vents.  No expensive or complex encapsulation, de-humidification systems, or condensation water pumps. No duct work to install. No need for an AC electrical power circuit. No need for humidistats, thermostats, or other unreliable and costly controls. No need to go in the crawl space for installation. Also ideal off grid ventilation for smaller areas such as sheds, garages, cabins, workshops, and other outbuildings and enclosures.  

Custom Solar Vent Fans

Custom Solar Fans (Call or email to discuss/get a quote)

Custom solar powered fan solutions are a significant part of our business. Some past examples include - 

  • Solar vent fans for over the road hay drying and storage trailers.(27 so far!)
  • Off-grid-crawl space fans for cabins, camps, and boat houses.
  • Push-pull cross flow under floor crawl space ventilation.
  • Push-pull ventilation of finished attics with knee walls.
  • Remote solar panels due to heavy nearby shade (up to 120 feet apart).
  • Attic and crawl space fans on the same 30 watt solar panel.
  • Enclosed cathedral ceiling solar ventilation.
  • External power connections. (DIY hybrid).