Performed diagnostic on 26yr old Rheem furnace with a 5yr old Goodman ac unit, upon arrival customer stated when she switched to heat it never started up just was humming, checked tstst, already in heat mode, turned on light switch for furnace customer had turned off, upon trying to start up inducer was just humming and not spinning, pulled inducer to make sure no blockage, found no blockage just a lot of rust , was able to get inducer to spin but explain it can fail at any time, recommend replacing inducer, inspected heat exchanger can see a lot of rust build up, blower wheel heavily impacted, recommend pulling and cleaning, explained motor can still fail, blower capacitor reading below specs, recommend replacing capacitor, system does not have flood protection, made customer aware, inspected outdoor unit, recommend cleaning condenser coil, due to age of furnace recommend install supervisor, customer approved, schedule with office for today, customer also signed up for home care today