Attic fan

A trend towards solar-powered attic ventilators is observable in the interest of conserving electricity and lowering monthly utility bills.

Wind-powered roof turbines, often colloquially referred to as "whirly-birds", are also used to ventilate attics and other confined spaces.

Because an attic fan is made of metal, and is also subject to lightning strikes if mounted on a roof, grounding is extremely important.

This loss of conditioned air can negate the energy conservation gains that might be expected from forced cooling of the attic with a fan.

In addition, an automatic cutoff switch can be set up to turn off power to the fan if it detects a temperature above a preset limit.