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What kind of heat exchanger is in your furnace?

The following chart shows new heat exchangers from various manufacturers gas furnaces. This chart does not show every heat exchanger in every model of furnace. Your heat exchanger may be different based on the model and the year of manufacturer.

Carrier • Bryant • Payne  Clam-shell Heat Exchanger made with aluminized steel	Armstrong • Lennox Clam-shell Heat Exchanger made with aluminized steel. Some newer units have a tubular
Nordyne • Gibson • Westinghouse • Tappan •  Kelvinator • Frigidare • Philco Grandeaire • Intertherm Tubular design made with aluminized steel. The crimps increase air flow inside the tube, but can weaken the metal.	Rheem • Ruud This tubular design made with aluminized steel has a Muffler Box to reduce the flow size.
Trane • American Standard made with aluminized steel. Some higher end units have a tubular stainless steel exchanger.	York • Fraser Johnston made with aluminized steel

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