Attic Temperature Control

A couple different fan styles can be used to help control the temperature of an attic space.

Attic temperature control.

Calculations indicate that on a july day in texas a ventilation rate of one air change per minute for a typical attic using 95 degree f air will lower the peak attic temperature to about 101 degrees f. The erv6 model power roof mount vent can move air at a rate of up to 1500 cu. Providing half air change per. Depending on its layout your home may be better suited to one or the.

Temperature control and moisture control are the major reasons for providing attic ventilation. Lowering the temperature in the attic can lower the temperature in the rest of the home reducing the amount of time the home s air conditioner spends running. This in turn can help save money on your heating and cooling costs. Step 1 install insulation under the attic floors to keep the attic from getting too hot or too cold.

Attic fans draw cooler outside air into the hot attic area through attic vents located either on the roof or on the wall near the gable to reduce the space s temperature. Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape. The ceiling design temp should be the greatest attic temp delta t not the ambient air temps. The insulation will trap heat instead of letting the heat dissipate to other parts of the home.

It is designed for attic spaces up to 2800 sq. Attic temperature depends on the amount of solar radiation construction details and the rate of ventilation. However heating system manufacturers must meet codes that enable your heating system to maintain a steady attic temperature of at least 68 degrees. It can efficiently remove a larger volume of hot and or humid air from your attic when compared to static ventilation.

The closer you can get the max attic temp swings to ambient the better but it is really hard in existing housing stock especially when the existing roofing surface is nowhere near needing replacement. Other solutions include adding an attic vent or improving attic insulation. Taking the necessary steps to control the temperature in your attic won t be easy but will pay dividends in the long run. They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.

There are several ways to do this. Their functions differ somewhat. Install electric ventilators and attic fans which remove hot air from an attic.