Goodman quality has improved greatly over the past 5 years. As far as Carrier/Bryant goes.......I'm not sure if they would even make a good fish hurdle! Why not change the heat exchanger and control board? Assuming its not an antique and worth fixing this would get you going before the bad...
I'm not sure if this is the right place to post this but............I have a pile of power tool batteries that are bad and am trying to save a few bucks and rebuild them myself. I bought some 2800 mah sub c nicad batteries to rebuild a pack that was originally rated at 2400(which I assume is...