I am looking for replacement furnaces and have read all kinds of info on Carrier, Lennox, Goodman etc and etc.
The way I see a a typical 80% eff. furnace it that it is like a "sophisticated kitchen gas oven": gas burners, heat exchanger, electronic control etc.
I just want to list the major components that can break down and maybe the pros here can advise which brand (let's say ??? American Standard) and which part (let's say circuitboard) are most prone to breakdown.
The following parts, because of their "low-tech" nature, are supposed to last 10-15+ years or more, so we should not have problems with these parts for the first 10-15 years, is this correct?
- Gas Burners
- Gas Valve
- Heat Exchanger
- Electric Blower
- Electronic Circuit Board
- High-Limit switch
- Electric Motor capacitor
Of course the 90% eff furnace is a bit more complex (2nd heat exchanger, induction motor etc, and etc.), but I just want to lerarn the basic common problems so I can stay away from a particular brand (I know installation is important, but I got a good local HVAC Co....so I am OK).
Assuming the installation is well-done, So when people say their "newly installed" furnace breaks down in the first 1-5 years (which is not fun to deal with), exactly what part(s) in the furnace are the usual culprits???
2-story home built 1991
Tempstar Furnaces x 2