Complete 3 heating maintenance in loganville. Find upstairs 4 year old Lennox gas furnace operating with in manufacturer spec. Find R6 ductwork and missing in-line water protection in attic. Find main level carrier 6 year old gas furnace operating with in manufacturer. System flue pipe not code due to undersize and missing water protection. Find basement 22 year old Armstrong gas furnace not operating properly due to worn ignition. Find furnace control board overheating, worn inducer motor and motor. System missing water protection, flue pipe not code and gas line not code. Customer only want to repair furnace for now. Replace furnace ignition. System operating at this time. Find bio growth on upstairs system, suggest pureAireX air purifier system. Give customer estimates.