Solar Attic Fans

Reduce attic temperatures by 40 degrees, in turn reducing home temperatures by 10 degrees. Save on AC load.

Solar Attic Fans

Solar Attic Cooling

AlternateEnergy uses Natural Light's Solar Attic Fan system that includes a 25-year manufacturer warranty.

Available Capacities (side and top connection models)
Model Operating CFMs Venting Capacity
10 WATT Solar Attic Fan 850 cfms 1,200 sq. ft.
20 WATT Solar Attic Fan 1,200 cfms 1,800 sq. ft.
     
     
Available Warranties
25-year housing, solar panel and motor manufacturer warranty³

Lowers attic temperature which reduces the load on the HVAC System.

The most obvious reason for attic ventilation is to lower attic space temperature during the warmer months. Attic temperatures can exceed 160°F during hot summer days. Proper attic ventilation can reduce those temperatures by up to 50°F. No matter how much insulation is in the attic, heat can still transfer into adjacent living spaces. In fact, extra insulation can actually add to temperature increases because heat is trapped in the insulation. Proper ventilation evacuates this excess heat build-up. As the heat is exhausted, the work load of the air conditioning system is reduced, thereby saving energy and extending the life of the air conditioning system.²

Extends the life of the roofing materials.

Though asphalt shingles are designed to take the abuse of the sun for many years, they are subjected to greater temperatures when the roof decking is allowed to overheat, which is just what happens in an under ventilated attic.

In the cooler months, moisture is the most serious concern. Even with the use of vapor barriers to keep moisture from entering the attic, there are air leaks around ceiling light fixtures, bathroom exhaust fans that allow unwanted moisture into the attic. Moisture condensing on the framing members and the inside of the roof deck can lead to the growth of mold, mildew and rot in the roof deck and framing. A good indicator of moisture problem is rusty roof nails sticking through the roof deck.²

Asphalt shingle manufacturers warranties require proper attic ventilation.

Attic ventilation is required in cold environments - it evacuates the warm moist air that heat sources produce. Hot moist air lingering in the attic spaces can condense on the underside of the roof sheathing and rot it out and also causes mold to develop on the interior walls. Cold air in the attic space will not affect the temperature in the adjacent living spaces if properly insulated.

Good ventilation helps prevent ice dams, which begin to form when warm air in the attic melts the snow from beneath and creates runoff that refreezes on the colder eaves.²

Product Specification Downloads

To find out more information about Natural Light's products please visit their website at here or you can download this product's Specification Sheet and Use and brochure below.

PDF Icon Solar Attic Fan Installtion/Technical Specifications

¹ Available to taxpayers who have an income tax liability. Contact the State Department of Taxation, IRS, or a professional tax advisor for details.
² http://www.solaratticfan.com/index.html
³ http://www.solaratticfan.com/pages/saf_warranty.html