Peformed fall preventative maintenance on all residential heating units. Furnace precision tune up; clean and tune up furnace; clean burners, test ignition components, adjust gas level, test safety circuit, check indoor motors, checked all electrical components, tested indoor air flow, checked heating temperatures, and tested overall furnace operation. Furnace number 2 wasp non operational at arrival. Found that inducer motor had seized. Upon further inspection, there were 5 or more birds lodged in exhaust. Removed birds and replaced inducer motor under parts only warranty. Tested operation of furnace and all is now operating normally. I installed vent protection screens on furnace 1 and 2 exhaust and intake of both furnaces. Both units behind kitchen, the ruuds, are in need of blower fan cleanings. I will attached a quote for this. Furnace 11 in the attic also requires blower wheel cleaning. The quote for all 3 cleanings is attached.