OEM Lennox Heat Exchanger Assembly — 29W65

Genuine OEM Lennox 29W65 heat exchanger assembly. Serving as the critical link between combustion and comfort, this heat exchanger absorbs heat from the burner flames and passes it to the air circulating through your Lennox furnace, while safely isolating flue gases from your living space. Manufactured to precise factory standards, the 29W65 drops in as a direct OEM replacement for reliable, rated heating.

Common failure symptoms: Telltale signs of a worn heat exchanger include visible cracking or corrosion, rust particles around the burner box, a flame that flutters or changes color when the blower starts, soot deposits, musty or acrid odors, and repeated tripping of the rollout or limit switches. Because these conditions can permit carbon monoxide leakage, the exchanger should be replaced without delay.

Why OEM matters: Your Lennox furnace was engineered around the specific geometry, alloy, and heat-transfer characteristics of its original exchanger. A genuine 29W65 assembly ensures an exact fit, a proper combustion seal, and continued compliance with the safety and efficiency ratings of your system. OEM parts safeguard your warranty and help your furnace run cleanly and dependably for years.