Why Is It So Hot In My Attic

You would think that an attic fan sometimes called a powered attic ventilator or pav would keep the attic space cooler by exhausting hot air.

Why is it so hot in my attic.

Hotspots can be a pesky and frustrating part of the summer experience. A pav does indeed blow hot air out of the attic but unfortunately it also sucks cool air from your living space into the attic through leaks in walls and ceilings. One of the biggest reasons the upstairs gets so hot is that the current sealing insulation and ventilation systems are not working correctly. My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in.

Install electric ventilators and attic fans which remove hot air from an attic. I live in northern virginia hot humid climate in the summer and use heat pumps to heat and cool my house throughout the year. The attic is a huge determinant in keeping your entire home cool so the first place to start cooling your home should be the attic. In order to cool the upstairs in summer it s important to know why these hot spots are present.

The biggest downside to this type of cooling system though is that you must install it when you are installing either a new roof or building a new home. I have large attic with ridge vents and screened vents at either end of the attic to maintain air flow. Another reason your attic is so hot is because of insulation. Not the overabundance but the lack of insulation in the attic.

In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth. Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer. They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees. However for best results you must have sufficient vents to allow for the free airflow.

I have a shop in my attic for some of my hobbies and it get s very hot in the summer. If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage. Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape. A hot attic is bad for several reasons.

Excessive heat deteriorates items you store in the attic and can cause moisture. It is placed at the highest point of your roof so that the hot air rises to get out.