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Lennox

OEM Lennox 24V Standing Pilot Gas Valve — 57P81

SKU: LNX-57P81 Brand: Lennox
$169.95 $229.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Lennox 57P81 is a genuine OEM 24-volt standing pilot gas valve designed for use in Lennox furnaces and heating appliances equipped with a standing pilot ignition system. This valve precisely regulates the flow of natural gas or propane to the main burner, opening only when the pilot flame is proven and a thermostat call for heat is present. Common signs of a failing gas valve include a furnace that will not ignite, a pilot that repeatedly goes out, insufficient heat output, or a gas valve that fails to open or close properly. This Lennox OEM replacement part ensures reliable and safe gas regulation, restoring your Lennox heating system to factory performance specifications.

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 24V Standing Pilot Gas Valve — 57P81?
Yes. This is the factory-specified OEM gas valve for the Lennox OEM Lennox 24V Standing Pilot Gas Valve — 57P81. 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 24V Standing Pilot Gas Valve — 57P81?
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