The fan center’s purpose is to control when the indoor fan turns on. Before the integrated gas control board, the indoor fan on gas and oil furnaces would either turn on at the same times as the heat ...

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Sami Allen is the managing editor at Forbes Home, with over seven years of ...

If it be me I would wire up a sail switch. Contact closed when the fan is on (hot air)and independent to the furnace.<BR><BR><BR>And yes, taping into the low voltage thermostat wiring would work ...