Upon arrival found water leaking onto floor from return. Found water panel sucked into return. Customer opted to have pad replaced. Furnace coding 3. Pressure switch. Found inducer port clear removed flu to fine no obstruction. Found significant corrosion/rust on heat exchanger upon returning furnace to service found furnace firing up and running. Inducer motor has squealing and excess noise. Will call Tomorrow for pricing and Availability pressure switch and inducer motor. Left quote for full system for customer.