What are the benefits of solar vs. electric fans?

Active attic ventilation comes in two varieties: electric and solar-powered. Both deliver comfort and prolong roof life by controlling temperature and moisture in your attic, but solar-powered models are becoming more prevalent. Here's why:

Energy efficient
Solar-powered attic fans don’t need electricity to run. From dawn until dusk, their power comes from the free, endless energy of the sun.

Electric fans cost $180 - $200 a year to cool your attic. Solar attic fans use the sun's energy, so they cost nothing to operate. A 30% federal tax credit and, in some cases, an additional state or county tax credit lets you save even more.

Solar attic fans run using clean energy from the sun, not fossil fuels. They're healthy for the environment because they reduce pollution and the carbon footprint.

Solar attic fans begin working as soon as sunlight hits the solar panel. So they're ready to go right out of the box without wires or the help of an electrician.

With no wires or electrical components to break, solar fans require zero maintenance.

Quietly reliable
Venturi designs and brushless direct current motors make select models, like the Solar Star Roof Mount and Interior Mount series, whisper-quiet and long-lasting.

An active ventilation system keeps your attic cool and dry, which prolongs roof life, keeps interiors comfortable, and saves money. Electric fans may be more powerful, but they cost more and require an electrician to install the wiring. Solar-powered attic fans offer power and performance along with energy and cost savings. They’re also reliable, easy to install, a breeze to operate, and good for the environment. This makes them a smart choice for the homeowner who wants the best balance of comfort, convenience and cost savings.

What is the difference between active and passive ventilation?

Traditional passive vents like soffit and gable vents are designed to draw cooler air inside the attic, forcing warmer air outside. But passive vents may not be enough to control hot summer temperatures or high winter humidity. 

Active ventilation can help by increasing the rate of airflow. When hot air moves quickly through your attic during hot months, it doesn’t have a chance to build up and damage the roof and internal structure of your home. This also keeps hot air from seeping into your living spaces below.

In colder months, proper circulation keeps moisture from accumulating inside your attic. This prevents wood rot and wet insulation. A well-ventilated attic also hinders the formation of ice dams on your roof, which can cause leaks when snow gets underneath shingles and melts.

More effective than passive vents alone, an attic fan prolongs the life of your roof and makes your home more comfortable by keeping heat and moisture under control.