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Lennox

OEM Lennox Gas Valve — Y5406

SKU: LNX-Y5406 Brand: Lennox
$169.95 $229.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox Y5406 gas valve manages fuel flow to the burners in your Lennox furnace or heating appliance. It coordinates with the ignition module and safety circuits to admit gas only when heat is called for and to shut it off immediately under any unsafe condition, serving as a core safety and performance component.

Common indications of a failing valve include no ignition, burners that fail to stay lit, delayed ignition with a lingering gas odor, erratic flame behavior, or a system that repeatedly locks out. Chattering, buzzing, or a detectable gas leak are clear signs the valve should be replaced right away.

Using the OEM Lennox Y5406 guarantees the valve is factory-calibrated to the precise pressure and voltage your Lennox system demands. Non-OEM replacements can cause improper firing rates, create safety concerns, and void your warranty. This original part ensures exact fit, rated efficiency, and reliable heating season after season.

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

Frequently Asked Questions

Does this Gas Valve fit my Lennox OEM Lennox Gas Valve — Y5406?
Yes. This is the factory-specified OEM gas valve for the Lennox OEM Lennox Gas Valve — Y5406. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the gas valve on my Lennox OEM Lennox Gas Valve — Y5406?
Requires licensed HVAC technician. Gas valve work involves gas lines that must meet local building codes. Improper installation risks dangerous gas leaks. Buy the part yourself to save 40–60% on markup, then have your technician install it.
What symptoms mean I need a new gas valve?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this gas valve compatible with Bryant or Payne too?
Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Lennox gas valve?
Always use OEM. Gas valves must match exact pressure ratings, port configurations, and safety certifications. Non-OEM gas valves can create safety hazards and may violate building codes.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
HVAC Parts Specialist — Online