How Much Does An Attic Fan Save

The whole house fan is installed inside the attic between the living space and ceiling.

How much does an attic fan save.

The attic fan kept my house cooler by 8f compared to pre fan installation days. If you are looking to save on your cooling costs or notice your upper levels are hard to keep cool you should consider the insulation levels in your attic. How much does it cost to insulate an attic and how much will you save. Temp 92 f at 5pm.

This product requires direct sunlight to operate. 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. Temp 84f at 5pm. You probably aren t getting the benefit that you thought you were getting from your attic fan.

Ad the infrared rays from the sun are powerful. Except in rare cases attic fans offer no real benefit for your home. 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. That means it could take between 10 15 years to get back to even with this investment.

Whole house fans work on the principle of removing the hot and humid air out of the house. The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows. 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. After attic fan installation ac still off during day.

This was observed on numerous days following the installation. 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. First off you should know that insulating your attic isn t cheap. Attic fans cool the attic which helps cool the rooms just under it.

The downside of attic ventilation fans. Larger homes that need larger a c units can save even more. Because those fans can be so strong that they depressurize the attic and then reach down deep into the living spaces of your house and pull out air conditioned air. During workdays would leave air conditioner off when leaving in the morning.

Good insulation reduces fan effectiveness. Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. They ll find little gaps inside the walls where wires run and things like that and it s been shown that using an attic fan can actually increase air conditioning costs. 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.