Product Name
$0.00
✅ In Stock
🚚 Ships Today
🔒 OEM Certified
🔄 30-Day Return
Same-day dispatch if ordered by 3PM CST
Free shipping on orders $75+
Check compatibility before ordering
IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The genuine OEM Lennox 96M31 heat exchanger assembly forms the heart of your Lennox furnace's heating cycle. Combustion gases circulate through its precisely formed passages, transferring heat to the air moving across it while sealing exhaust byproducts safely away from the living space. Manufactured to Lennox factory standards for exact fit and long service life.
Common failure symptoms: Look for visible cracks, corrosion, or discoloration on the exchanger, a burner flame that distorts when the blower engages, and repeated high-limit shutdowns causing short cycles. Soot deposits, a persistent burnt smell, or a triggered carbon monoxide detector are clear warnings that the exchanger has failed and must be replaced without delay.
Why OEM matters: Since this component keeps combustion gases out of your breathing air, an exact factory match is essential. Aftermarket units may not seal correctly, can warp under heat, and often void your Lennox warranty. Genuine Lennox 96M31 ensures proper alloy, sealed welds, and correct fit for a safe, lasting repair. In stock and ships same day before 3PM CST.