I recently purchased a mobile home and know nothing about maintaining it. The weather is turning cold and I do not know how to make my furnace work. I turn the thermostat to heat and set the temp but nothing happens. I checked it and the pilot light is lite and stays on, but, the furnace does not kick on and blow air. Is there something that I'm not doing to make the blower turn on? Please help, I'm cold!

Hello I have coleman presidential 7900-6821 gas furnace with a air blower control box on it. I know I need to run a extra thermostat wire to it. My question is would you have a wiring diagram on you on how to wire it up after I run it.

Where is the air filter on 7900 SERIAL # MGHA-056ABFG-01

On the front upper part of the indoor half of the system. It's not easy finding the right air filter for this old system.