Solar attic soffit vent, crawl space vent, solar foundation vent fans


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Solar Attic Soffit Vent Fans


Blows cool, fresh air IN horizontally across the bottom of the attic, just above the ceiling, where it matters the most. Hot air in the attic is cooled, displaced, and forced OUT of the other passive attic vents, reducing the attic temperature and moisture.

Installs in attic roof soffit vents, under the roof eaves and overhangs. 

Advantages include-

  • No holes in the roof to leak.
  • No reason to go on the roof or in the attic to install or repair a fan (or a leak). 
  • No need for an AC electrical power circuit. 
  • No need for complex controls. 
  • No need for code permits or inspections (typically).       
  • Doesn't pull air conditioning  out of the house and into the attic.
  • No risk of pulling toxic CO from fired   appliance exhaust into the house. 
  • Fewer CFMs are needed, allowing smaller, quieter fans.
  • Ideal for use with shingle, tile, and metal roofs because they are not located on, or attached to, the roof weather barrier. 
  • Improves /boosts effectiveness of existing attic vents, fans, and roof turbines.

Solar Crawl Space & Foundation Vent Fans


Removes/reduces crawl space moisture and odors. 

Bad air is gently and evenly pulled out of the crawl space through an existing foundation vent and is replaced by fresh air entering through the other foundation vents. 

Advantages include-

  • 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. 
  • In many cases, no need to go into the crawl space to install.   

Custom Solar Vent Fans

Custom 30 watt trailer vent fan kit


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.
  • Solar vent fans for firewood drying.
  • Solar storage shed fans.
  • Solar garage fans.
  • Solar trailer fans.
  • 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).
  • Paired attic and crawl space fans on the same 30 watt solar panel.
  • Enclosed cathedral ceiling solar ventilation.
  • 10, 20, and 30 watt solar panel systems.
  • Solar basement bilco drying fans.
  • Solar under deck drying fans.

Contact us regarding your specific solar ventilation needs and for a free quote.

Questions? Contact Us

We've been designing, making, testing, and improving our products since 2010. 

We're flattered that our concepts are being copied and sold in big store chains at a higher price!

 If we don’t think we’re the right solution, we’ll say so, rather than just try to sell the products. 

We hope that you will like our products, and we welcome your questions, comments, and feedback.   

Solar Powered Soffit Fans LLC (SpSF)

Davie, Florida, United States