OEM Lennox Heat Exchanger Assembly — 14C17

The genuine OEM Lennox 14C17 heat exchanger assembly is responsible for moving heat from your furnace's combustion chamber into the circulating air, while safely sealing off flue gases from the air you breathe. Produced to exact Lennox specifications, it re-establishes the rated heating capacity, proper airflow, and built-in safety margins of your original furnace.

Common failure symptoms: Signs of a failing exchanger include cracks or rust on the metal surfaces, a wavering or rolling burner flame, soot buildup, a noticeable burning or metallic odor, and frequent high-limit shutdowns that cause the furnace to short cycle. Because cracks can release carbon monoxide into the home, prompt replacement is a safety priority.

Why OEM matters: The heat exchanger is a combustion and life-safety component, so the replacement must match your Lennox furnace precisely in size, material, and construction. The authentic 14C17 assembly ensures a leak-free seal, even heat distribution, and full system compatibility while preserving your factory warranty. Non-OEM alternatives risk poor fit and diminished safety. Trust genuine Lennox for lasting, code-compliant reliability.