Person selling lennox 3.5 ton whisper heat 1992 furnace for 400.00 Replaced motor on blower 2 mon. ago w/new.A-coil and cover and some duct work included. Should we buy?
You are taking a chance that someting else may be bad or nearing breakdon.
A critical part of a forced hot air furnace is the heat exchanger. If ths develops a crack then you can get carbon monoxide into the house.
Another part that can give trouble is the pilot light or electronic ignition.
Finsally if something major does break, you have the cost of installing all over again when you buy a new furnace,
(One morning on WRKO Radio) The tub's not clean! Let's remodel the bathroom.
(One afternoon on WRKO Radio) It's time for an oil change. I'm going to trade in the car for next year's model.