This is a 2009 Trane, sealed combustion, single stage, 80,000 BTU, direct vent, condensating furnace installed in a crawl space, The system is functional, the intake and exhaust PVC vent pipes appeared properly installed. A routine annual maintenance or pre-purchase inspection is recommended, and service of the condensate sump is needed. The pump collection chamber is lacking the manutacturer required neutralizing chips. The acidic discharge have been know to damage metal piping, and are required by current standards.
Condensing furnace