Howdy handy peoples, i just bought a second hand heil furnace(upflow),it's a dc90 model # NTGM 125EKA3.it only was used for a few hours and the price was right .As I talked to an installer he said it was not very efficeint,does anyone no what the efficeincy of this furnace is,as I think the installer is tryin to push me to his product.Tryin to decide if i should get installed or fork out more money for a better 1 thanks [
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