OEM Lennox Gas Valve — 78L60
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The genuine OEM Lennox 78L60 gas valve controls the flow of natural or LP gas into the burner assembly of your Lennox furnace. Working in concert with the ignition control board and safety limits, it opens to admit fuel during a heating call and closes instantly when the call ends or a fault is detected — making it one of the most safety-critical components in the entire heating system. This valve is engineered to match the exact pressure regulation, flow rate, and electrical characteristics your Lennox equipment was designed around.
Common failure symptoms: a furnace that ignites intermittently or not at all, a clicking valve that never opens, delayed ignition with a "whoomp" sound, no gas flow despite a call for heat, or a valve that fails to fully close and allows gas to seep through. Erratic regulator pressure and audible buzzing can also signal a worn valve.
Why OEM matters: gas valves are life-safety devices, and using the factory-specified Lennox 78L60 guarantees correct manifold pressure, proper shutoff, and full compatibility with your unit's control logic. Aftermarket substitutes risk improper regulation, nuisance lockouts, and voided warranties — with OEM you get rated performance and peace of mind.
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