OEM Lennox Gas Valve — Y9933
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The genuine OEM Lennox Y9933 gas valve regulates and controls gas delivery to your furnace's burner assembly, responding to the control board to supply safe, accurately metered fuel for each heating cycle. It is manufactured to the specific pressure, regulation, and electrical requirements of your Lennox equipment for proper flame quality and dependable operation.
When this valve begins to fail, you may experience no ignition, no heat on a thermostat call, burners that light and then drop out, delayed or rough ignition, or recurring safety lockouts. A stuck-closed, stuck-open, or leaking valve can shut the system down entirely and pose a safety concern.
Gas valves are safety-critical, which is why the OEM Lennox Y9933 is the correct replacement — it precisely matches the flow, regulation, and control characteristics your Lennox furnace demands. Generic alternatives can cause improper combustion, nuisance faults, or unsafe conditions. Choose the factory-original valve for exact fit, listed safety compliance, and lasting reliability.
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