What is the purpose of the thermal switch?
Attic Breeze solar attic vents include a thermal switch as part of our standard package. When your attic temperature is less than roughly 70°F, the thermal sensor will shut down the attic fan. We do this for a few reasons: During the fall and spring when attic temperatures are less than 85°F, there is very little driving force for heat transfer across the insulation in your attic (~15°F temperature difference between the attic and living area vs. ~70°F difference during the summer when the attic is hot). By shutting down the attic fan when it’s not needed, we can greatly extend the run life of the fan motor, saving you money long term. Additionally, in many areas of the country where attic moisture build up during winter is not an issue, shutting down the attic fan will help reduce winter heating bills (heat can flow in either direction through your attic insulation; the greater the temperature difference between the attic and living area, the greater the amount of heat transfer regard
