American Standard 80K 80% BTU 2 STAGE ECM 17.5″ WIDE S8X2C80M5PSCBA Furnace ECM

American Standard 80% 80K BTU 3-4 Ton Drive Gas Furnace 17.5 ” Wide S8B1C80M5PS

Goodman 100K BTU 96% AFUE Two Stage Gas Furnace – Upflow/Horizontal – 21″

used American Standard S9V2 furnace