Central Heat will not come on and has a burning odor
I smelled a burning odor on Saturday so I turned the heater off. The heat will not come on when I move the thermostat for heat but I automatically smell a burning odor when I try to turn it on. My ex-husband always changed the filter on the furnace in the garage and I don't even know how the thing opens to change the filter. I see a bunch of screws everywhere but I don't want to go tearing anything up. Do I need to try to find and change the filter or could it possibly be the thermostat? I see the thermostat low battery light is blinking.