How To Change Furnace Filter Goodman. Let the furnace sit unpowered for five minutes. If it isn’t, turn the gas control switch to off and make sure that the pilot light is out.
Over time, dust and other debris can collect in the filter, reducing the efficiency of the furnace. Lower the temperature settings on the thermostat to the lowest it can go. I am a single woman and i’ve owned a home for 15 years and after 15 years i’ve begun to see a few repair issues.