York S1-363-93521-703 Heat Exchanger

The York S1-363-93521-703 Heat Exchanger is a critical 3-tube OEM replacement component engineered for high-efficiency thermal transfer in residential and light commercial York furnace units. Designed to withstand the rigorous thermal cycling demands of heating operations, this multi-tube assembly facilitates the safe separation of combustion gases from the indoor airflow, ensuring system safety and optimal BTU output. Built from heavy-duty aluminized steel, it helps prevent premature secondary heat exchanger fatigue and cracking, common pain points in high-duty cycle environments.

For technicians performing a furnace heat exchanger replacement, this genuine York HVAC part ensures precise alignment with factory burner manifolds and inducer assemblies. Restoring the integrity of the combustion chamber with an OEM 3-cell module is essential for maintaining furnace efficiency ratings and preventing CO leaks. This component is specifically matched to the static pressure and airflow profiles of compatible York, Luxaire, and Coleman packaged and central heating systems.

• OEM Precision: Direct-fit 3-tube design ensures exact port alignment with existing gas valves and burner assemblies.
• High Thermal Conductivity: Engineered for maximum surface area contact to optimize heat exchanger efficiency.
• Industrial Durability: Constructed to resist oxidation and scaling during high-temperature combustion gas flow.
• System Safety: Restores factory-spec air-to-gas separation, critical for passing combustion analysis tests.

What are the symptoms of a cracked heat exchanger in a York unit?
Common indicators include soot buildup near the burners, fluctuating flame patterns when the blower kicks on, and persistent rollout switch tripping. A 3-cell heat exchanger failure often results in system lockout to prevent carbon monoxide migration.

Is the S1-363-93521-703 compatible with all 3-tube York furnaces?
While it fits many residential series, compatibility is determined by the specific model and serial number of the chassis. Technicians should verify the technical specifications and tube count before beginning the tear-down.

Does this assembly include the primary and secondary cells?
This part number typically refers to the primary tube assembly; hardware and gaskets are often sold separately or reused from the original unit depending on their condition.

This item must ship via truck. Please contact us for freight quote.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.