Solar Attic Fan: Improving Home Comfort Without Cranking Up the A/C

What if you can improve home comfort and ease the load on your air-conditioner without spending a fortune? Yes! And the solution to this takes the form of a solar attic fan! 

On hot summer days, the sun beats down on the roof of your home, radiating heat into the attic and down to the living space. This unwanted heat gain forces your air-conditioner to work even harder to cool your home, increasing electricity bills and causing your cooling system to wear down faster than it normally would.

iSolar 40W-INT (integrated) solar attic fan installed on a roof in Florida 

The iSolar 40W-INT (integrated) solar attic fan

The two 40W-INT solar-powered units (seen above) installed on this homeowner’s roof in Florida will significantly remove the hot air from the attic year-round (at no additional cost to the homeowner!) While most homes have passive vents, they don’t make any real impact on home comfort levels.

iSolar believes that a comfortable home doesn’t have to equal an empty wallet! And so, improving home comfort cost-effectively describes the very purpose of iSolar 40W-INT fan. With a powerful 20V motor, the fan delivers almost 1200 CF and enhances attic ventilation by expelling hot, moist air. At the same time, the fan also introduces cool, drier air into the space. This drop in attic temperature significantly reduces the demand on your air-conditioner and will result in real electricity savings. 

As even moderate summer climates can increase the temperature of your attic to over 65°C (150°F), homes that don’t experience tropical heat waves can also benefit from a solar-powered attic fan. Our Canadian customers have enjoyed reduced moisture levels and heat build-up in the attic in their homes and cottages year-round. 

iSolar offers solar-powered attic fans ranging from 250 CFM to 1125 CFM (hourly average in direct sunlight) that can be used for a range of home applications in addition to attics. These include greenhouses, sunrooms, garages, detached studios, golf course washrooms, fishing huts, portable toilets and sheds. Shop the full line of iSolar fans at

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