My blower has started making a huming noise at startup for a few seconds until it is up to speed. A technician looked/listened and thought that the motor was going bad. The furnace is from 1999, so he recommeded furnace replacement instead of replacing the blower motor. In everyones experience, how long might we expect the blower motor to last before total failure? Is it reasonable to replace the entire furnace if it is 11-12yrs old?
He also recommended replacing the A-coil at the same time because of some previously repaired corrison on the A-coil housing/pan. Strictly speaking, there is no need to change the A-coil when replacing the furnace, right?
Many thanks for the input. I look forward to hearing what you have to say.