Powered Attic Ventilation Problems

If you choose solar attic fans over the traditional models then you are installing a product that will not be as powerful.

Powered attic ventilation problems.

In the summer we get calls about hot attics. Just like properly sizing your furnace and air conditioning unit you want precisely the right amount of attic ventilation for your home. The science behind attic ventilation however is sound. I understand that powered attic ventilators have a lot of problems.

The research concluded that if a powered attic ventilator will be used there must be a good air barrier between the living space and the attic. I do have some passive ventilation but not quite enough and the gables are maxed out because it s a flat roof so as long as i always run both fans at the same time and as. If the attic fan isn t turning on it could be an electrical issue a problem with the thermostat or the motor of the fan that s not working. Here are some of the myths and the facts you need to know about attic ventilation.

Air movement can be a significant problem with some models. Attic fan not turning on. These are real problems from real houses that have really happened. The underside of the roof deck can get very hot so hot you can t keep your hand on it.

More attic ventilation is good. Both of these problems are either caused or made worse by inadequate attic ventilation. According to the article powered attic fans can create excess moisture structural problems and combustion safety in a home. Hello i really appreciate this website.

In the winter we get calls about wet attics. Some of it will go directly into the attic air by conduction but that s a small amount because air isn t a good conductor. A lack of intake ventilation is one of the biggest items. Another would be backdrafting a water heater and putting carbon monoxide in the house.

Here are the most common problems that homeowners face with fans along with solutions to the problems. Sealed attics trap excessive heat and moisture which can lead to reduced shingle life. One potential problem would be sucking moist moldy air up from the crawl space into the house. Attic ventilation problems can be caused by a number of things.

This actually exacerbated the problem by increasing the pressure difference moving more humid outside air through the building cavity which created more condensation on the sheet metal duct. But my contractor is suggesting adding one to support a whole house fan due to the limited attic ventilation. Power attic ventilators can cause problems even without air conditioning. At temperatures of 150 f or more that s a lot of heat sitting there in that plywood or osb.