I'm not sure if this is the right place to ask this but we have a Luxaire gas furnace that's about 5 or 6 years old and its been making some crazy noises lately. We had 3 different technicians here to check it and one finally said it's the inducer motor. He didn't seem to want to work on it and said it would be ok but the noises have been getting worse so we called them back and they are sending someone else out Friday morning. My question is is it safe to wait that long? If the inducer motor goes completely out wont the house fill up with CO?

Hello I have a lennox gas furnace that is about 12 years old the other day I woke up to a very strange chemical smell almost like acetone varnish smell. House was a little cooler than normal and I could not locate the source of the strange smell. The next morning my thermostat trad low batteries so I put a fresh set in the display showed and then went blank. Thinking it is a bad thermostat I got a new one installed all wires are correct the display works off the unit however as soon as it makes connection with unit on wall (hard wired) it goes blank. Furnace then only operates blower and cool air blows. I tried taking display off again and seeing if maybe connection was not being made but display comes on as soon as it is taken off wall. I got the furnace to kick on by connecting it not all the way (thermostat face plate) but then furnace did not shut off when set temperature reached I am quite baffled as what is going on. Could it be the control board is fried but how is it still working ? Any suggestions??