OEM Lennox Gas Valve — 72W34
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The genuine OEM Lennox 72W34 gas valve is a direct factory replacement that regulates and safely controls the flow of natural or LP gas to the burners in compatible Lennox furnaces. Working in concert with the ignition control and safety circuit, this valve opens and closes precisely on each heating call to deliver reliable, on-demand warmth while maintaining critical safety shutoff functions.
Common failure symptoms: A failing gas valve commonly causes no heat or short cycling, burners that fail to ignite, delayed or intermittent ignition, a clicking valve that won't open, or a furnace that locks out on ignition failure. A gas odor, buzzing from the valve, or inconsistent flame are all signs the valve should be inspected and replaced.
Why OEM matters: Gas valves are safety-critical components calibrated to exact pressure and flow specifications for Lennox equipment. The OEM 72W34 ensures proper regulation, correct electrical and gas fittings, and full compatibility with the furnace control system — preserving safe operation and warranty coverage. Installation should always be performed by a licensed HVAC professional.
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