Do Solar Attic Fans Help

When you compare the capital expense of this product to the ongoing bills you would pay to operate the unit you ll come out ahead every time.

Do solar attic fans help.

Fresh air is pulled in from your soffits and or roof vent creating a draft through your attic. If a cloud blocks the sunlight the fans slow or stop. Many are solar powered and require no other wiring so they don t cause any additional charges on your electricity bill. Cold air is at the bottom and warm air is at the top.

Attic fan savings claims. Solar attic fans work by pulling in the cold air from the soffits and pushing out the hot air that has accumulated at the top of the attic. For the attic fans to work at peak efficiency they need to be on a south facing roof slope if you live in the northern hemisphere. It will offer you more benefits that include.

Solar powered attic vent fans usually don t move as many cubic feet of air per minute cfm as hardwired fans. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not going to get a sunburn. This is basically how air naturally moves. This air is then exhausted through the fan to the outside.

Using the simple physics principle of air circulation it can draw in cool air while letting out the warm air. Meanwhile solar attic fans are free to run lower your electric bills and have few costs beyond purchase and installation. Even if your roof already has ridge vents and plenty of ventilation built in it s a good idea to install gable fans or roof fans to help blow hot humid air out of the attic. How an attic fan works.

Much of that heat then conducts downward and finds its way into the house. The most significant benefit of solar attic fans is that they operate using renewable energy from the sun instead of being hooked up to your electrical grid. The problem with this design as argued by energy professionals is that attic fans also pull the conditioned air from your home into the attic. The attic fan just helps the air move more which adds cooler air circulation.

Attic ventilation fans also tend to be quite energy efficient in terms of their own operation. But they re much easier to install since no wiring is needed. This pressure balance improvement and the cooling provided by the air flow are most significant in the case of a leaky ceiling. Solar attic fan reviews even though electric attic fans can lower your air conditioning costs they cost more money to run than what they save you.

Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor. Attic fans exhaust hot air from your attic to the outside. Exhausting moderate amounts of attic air as solar fans do can counteract this reducing infiltration my calculations show it to be about right for a vented attic but either do the calculations or measure the pressures. Yes attic fans can make a difference.

Gable fans fit into the gable vent and can be set to operate only within a preset temperature range.