What do attic fans do

Here at GBAGreenBuildingAdvisor. Before addressing these recurring questions, . The recent hail storm and replacement of everything that is roof-related has many of us having to deal with attic fans and wondering what it is exactly that these fans do. Often being situated on the roof, attic fans are often in need of repairing or replacing following hail storms. There are really two categories .

An attic fan can be gable mounted or roof mounted.

Additional vents are required to draw in .

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. The authors of the paper you mention discovered many instances of attic ventilators causing depressurization of the attic. Although they do not address the root cause, it would seem that either the ventilators are oversized or the intakes are undersized. Whatever the cause, a depressurized attic could cause air to flow from . Good roof ventilation can do this, but shingle color, sun exposure and insulation are exponentially more important to overall energy efficiency than ventilation.

The whole house fan pulls air in from open windows and exhausts it through the attic and roof. It provides good attic ventilation in addition to whole house cooling. It just mounts up on your roof. You need to run 120-volt electric to it to power it. CLICK THE PHOTO NOW TO SEE ALL THE DIFFERENT TYPES OF ATTIC FANS SO YOU CAN . The laws of thermodynamics will disagree with you.

The problem is the temperature differential is not very high due to all the insulation your benefit is marginal at best. Lin asks, I want to install attic vent fans in my roof. Solar or PV fans run on sun power and pull superheated air out of your attic to be replaced by cooler outside air.

This reduces the amount of work your HVAC system has to do to cool your . The debate has caught the attention of some state legislatures. DEAR TIMy attic space gets as hot as blue blazes. Do these fans really work, and are they hard to install ? Will the fan significantly reduce the temperature inside my attic? How well do your solar attic fans stand up to hurricanes? Our goal is to make the most reliable solar attic fans in the market.

We started with passion, and passion continues to propel us forward into new and exciting opportunities. Listening to our customers and delivering what they ask for…. No other solar attic fan is sold in more parts of the world than SunRise Solar. Have you ever asked yourself: do solar attic fans really work?

I bought two of them from RemingtonSolar. How Much Does It Cost To Install An Attic Fan ? As result, stale warm air is vented out giving more room for fresh cool air, also known as “air exchange. A properly ventilated attic will help . Variables such as vaulted ceilings, amount of existing venting (soffit, ridge, gable), attic shape, pitch and obstructions must all be taken into account when calculating the amount of attic venting needed.