Energy Consumption Of Attic Fan

The whole house fan pulls air in from open windows and exhausts it through the attic and roof.

Energy consumption of attic fan.

With energy costs higher than ever many homeowners are looking for ways to reduce their bills while still keeping the whole house cool. The whole house fan is installed inside the attic between the living space and ceiling. And this is a gable fan. When set at low speed fans use between 15 and 30 watts and at high speed they consume between 50 and 100 watts.

The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. Energy usage of about 40 watts at medium speed is typical. This will use more energy and make your air conditioner work harder which will increase your summer utility bill. The electricity consumption of a ceiling fan ranges widely depending on the design and the speed setting of the fan.

Attic gable fans roof mount attic fans and solar attic fans. Use energy efficient attic fans to regulate your home climate. Whole house fans work on the principle of removing the hot and humid air out of the house. 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.

Many are solar powered and require no other wiring so they don t cause any additional charges on your electricity bill at all. It provides good attic ventilation in addition to whole house cooling. It helps to cool your home temperatures and the attic by approximately 30 degrees. Whole house fans should provide houses with 3 to 6 air changes per hour varies with climate floor plan etc check with a professional to determine what is appropriate for your.

Of course if the attic fan isn t working correctly and is running all year long that would be a significant problem. There are many types of attic fans such as. Energystar is a system whereby fans and other appliances can be certified with the energystar badge due to being energy efficient. I understand a blower door test would show the air leaks and i ve seen this 2x but i m trying to understand with an attic fan on in an unsealed attic the attic fan should pull the air in the home up into the attic.

An attic fan on the other hand is a fan that exhausts only attic air out of the attic vents. Attic fans are a good option for regulating your home s temperature and the type of fan you install can impact the energy efficiency of your attic depending on how well insulated your home is and where you live. Environmental protection agency and designed to encourage people to upgrade old or inefficient appliances. Gable fans fit into the gable vent and can be set to operate only within a preset temperature range.

If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit. The program is run by the u s. And i agree with the additional energy costs but my attic fan is a 1500 cfm 40 watts.