OEM Lennox Gas Valve — 41K37
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The genuine OEM Lennox 41K37 gas valve controls the delivery of gas to the burner assembly in your Lennox furnace. It opens on a call for heat to supply gas for ignition and shuts off to safely stop gas flow, functioning as a core safety and combustion component. Manufactured to Lennox factory standards, it provides accurate pressure regulation and dependable performance for compatible Lennox heating systems.
Common failure symptoms: When the 41K37 gas valve fails, you may experience no heat, burners that will not ignite, short cycling, a clicking or humming valve, gas smell near the unit, or repeated ignition lockouts on the control board. A valve that sticks open or fails to seal is a safety concern and should be replaced without delay.
Why OEM matters: Because a gas valve directly affects combustion safety, only a genuine Lennox 41K37 guarantees the correct manifold pressure, electrical connections, and mounting fit your furnace was designed for. Aftermarket valves can introduce regulation errors and safety risks. The factory-original part protects your equipment and ensures safe, efficient heating.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days