Do Solar Attic Fans Save Money

Cold air is at the bottom and warm air is at the top.

Do solar attic fans save money.

The solar attic fans all moved less than 1 000 cubic feet of air per minute cfm and they did nothing to lower the temperature inside my own attic. If you can improve ventilation in your attic and reduce the amount of heat the space holds and pushes into your home you ll reduce the cooling load on your air conditioner and save money on your utility bills. Using a whole house fan can result in a savings of over 300 each month of running a 3500w a c unit during the hottest part of summer. Larger homes that need larger a c units can save even more.

Because of the negative pressure inside the house that these fans create i don t feel that they save you money on electricity or cooling costs. The attic fan just helps the air move more which adds cooler air circulation. 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. Attic fan ventilation attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.

That means it could take between 10 15 years to get back to even with this investment. Hip roofs are tough. Here are some more benefits of getting a solar attic fan. This product requires direct sunlight to operate.

Let s assume that you have a supertight house and no. As hgtv points out cooling a 1 000 square foot home with solar attic fans can save you about 40 per year in a warm climate like florida. Attic fans cool the attic which helps cool the rooms just under it. Ad the infrared rays from the sun are powerful.

This is basically how air naturally moves. For example if you had a hip roof. Depending on what your utility charges that s about 40 per year. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic.

The only time i would ever use an attic fan is if i had a roof that was unusually difficult to vent passively. When exploring the best attic ventilation practices consider installing an attic ventilation fan to keep the hot air from settling in. You re almost always better off using passive ventilation like a ridge vent a soffit vent that sort of thing to reduce attic temperatures and not use an attic fan. Danny s tests of solar attic fans showed that in florida where there s abundant solar energy yearly savings from installing two fans in a house with just over 1 000 square feet of air conditioned floor area amounted to only 460 kwh.