Attic Too Hot For Ac

If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.

Attic too hot for ac. Lowering the temperature of an attic that contains ducts can reduce your air conditioning costs. Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace. If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage. A lot of people like to store stuff up there for example.

The same way your car gets stifling hot on any summer day your attic heats up too only much much worse. Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.

In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.