Broan-NuTone’s Solar-Powered Attic Ventilator (SPAV) begins working at first light instead of waiting until it detects a high temperature, allowing it to remove moisture produced by cool overnight air and to remove heat before temperatures get too high. The unit requires no electricity or fuel, emits no pollutants, and qualifies for a federal tax rebate of up to 30% of its cost. SPAV’s solar panel is made of high-strength tempered glass that can withstand golf ball–sized hail and hurricane force winds of up to 140 miles per hour and it won’t discolor or warp. It is also sensitive to low light levels and can lie flat on the roof. SPAV’s trim comes in black, brown, or weather wood.