Allied Air Enterprises Downflow or Horizontal 2 Stage Heat Variable Speed Gas Fired Non-Condensing Warm Air Furnace Four Four Allied Air Enterprises

Westinghouse High Efficiency / Direct Vent or Non Direct Vent FG6RL Four Four Westinghouse

American Standard Noncondensing Gas Furnaces Four Four American Standard

Hearth and Home Technologies Heat & Glo SL-550TR-D Four Four Hearth and Home Technologies

Hearth and Home Technologies Heat & Glo SL-750TR-D Four Four Hearth and Home Technologies

Hearth and Home Technologies Heat & Glo SL-950TR-D Four Four Hearth and Home Technologies