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Furnace heat exchangers transfer combustion heat to circulating air while keeping exhaust gases safely contained. Replacing a cracked or corroded heat exchanger restores heating efficiency, ensures safe operation, and protects the furnace system from performance issues and costly breakdowns.
-10%Lennox 96L77 Heat Exchanger No Coil Box Baffle Bracket 125SSSpecial Price $2,577.78 Regular Price $2,861.33
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-10%Lennox 96L75 125 Aluminum Heat Exchanger, Less Baffle Bracket /BoxSpecial Price $2,070.71 Regular Price $2,298.49
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-10%York S1-373-14997-702 2-Cell Heat ExchangerSpecial Price $2,352.69 Regular Price $2,611.49Out of stock
-23%Amana-Goodman B2832515 24" Heat Exchanger GasketSpecial Price $34.01 Regular Price $44.21Out of stock- -13%
- -10%Amana-Goodman 2521302S 4-Cell Heat ExchangerSpecial Price $453.34 Regular Price $503.21Out of stock
HVAC Furnace Heat Exchanger Replacement Parts
Furnace heat exchangers are designed to safely transfer heat from combustion gases to indoor air without allowing harmful exhaust fumes to mix with the airflow. In heating systems, the heat exchanger plays a critical role in maintaining efficiency, safety, and consistent temperature output.
Heat exchanger parts support proper heat transfer and sealed combustion performance. Primary heat exchanger cells absorb direct burner heat, secondary heat exchangers recover additional heat in high-efficiency furnaces, heat exchanger tubes direct combustion gases through the chamber, and high-temperature gaskets maintain airtight sealing to prevent gas leakage.
Common signs of heat exchanger failure include visible cracks, rust or corrosion, unusual furnace odors, soot buildup, reduced heating efficiency, or frequent system shutdowns. Replacing a damaged heat exchanger restores furnace safety, efficiency, and prevents carbon monoxide hazards.
PartsHnC offers a wide range of furnace heat exchanger parts, including heat exchanger assemblies, heat exchanger cell kits, induced draft and condensing furnace heat exchangers, from leading HVAC brands Lennox, Carrier, Amana-Goodman, and Reznor, with fast and reliable shipping!
FAQs
Can a damaged aluminum heat exchanger be repaired, or should it be replaced?
Aluminum units cannot be reliably welded; replacement is recommended. Stainless steel may allow minor spot repairs.
How do I verify proper heat exchanger sizing for my furnace or boiler?
Check cell number, diameter, and length against manufacturer specs. Ensure compatibility with burners and plates.
How do I fix a leaking gasket on a heat exchanger?
Remove the old gasket, clean mating surfaces, and install a new gasket with correct torque.
Can I reuse old gaskets during a heat exchanger replacement?
No, all gaskets must be replaced to maintain sealing and prevent leaks.
How do I check for airflow or hotspots after heat exchanger installation?
Use temperature probes across cells to detect uneven heating. Ensure baffles don’t block airflow.
How do I replace a cracked heat exchanger?
Shut off gas/electricity, remove old exchanger, and install OEM replacement. Torque bolts and seal all gaskets properly.