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Lennox 103181-01 White Rodgers 36J55-254P1 Natural Gas 2-Stage Gas Valve

Lennox 103181-01 White Rodgers 36J55-254P1 Natural Gas 2-Stage Gas Valve

Low stock: 1 left

Regular price $260.95 USD
Regular price Sale price $260.95 USD
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Shipping calculated at checkout.

Key Features & Specifications

  • Genuine Lennox / White-Rodgers OEM Replacement

  • 2-Stage Natural Gas Operation (High/Low Fire)

  • 24V Fast-Opening Dual-Direct Ignition

  • Inlet/Outlet: 1/2" NPT with 0.25" Straight Plug

  • Direct Replacement for P/N 77W04

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Specifications

Product Details and Key Specifications:

  • Part Number: 103181-01 (Catalog # 77W04)
  • Manufacturer: White-Rodgers / Emerson (Lennox OEM)
  • Model Number: 36J55-254P1
  • Gas Type: Natural Gas (NG)
  • Voltage: 24 VAC, 50/60 Hz
  • Inlet / Outlet Size: 1/2" NPT
  • Regulator Setting (Hi Fire): 3.5" W.C. +/- 0.3" @ 80K Btu/HR
  • Regulator Setting (Lo Fire): 1.7" W.C. +/- 0.3"
  • Straight Plug (0.25"): Yes
  • Shipping Weight: Approx. 2.8 lbs 

description

Lennox P/N 103181-01 (77W04) – White-Rodgers 36J55-254P1 2-Stage Natural Gas Valve


The Lennox 103181-01 (Catalog 77W04) is a genuine OEM White-Rodgers 36J55-254P1 2-Stage Gas Valve. This high-performance component is the primary fuel regulator for high-efficiency Lennox furnaces, specifically designed to handle two-stage heating cycles. By alternating between High and Low fire modes, it allows your furnace to provide consistent, whisper-quiet warmth while maximizing fuel economy and reducing temperature swings throughout your home. 

As a Genuine OEM part manufactured by White-Rodgers/Emerson, this valve is precision-calibrated for Lennox Elite (EL280) and Signature (SL280) series units. It features a fast-opening, dual-direct ignition design that integrates seamlessly with your system’s control board and safety sensors. Choosing a genuine replacement ensures your unit maintains its factory-specified pressure ratings and safety certifications, preventing the combustion issues often caused by universal aftermarket valves.


Key Features and Function:

  • Two-Stage Precision: Delivers a 1.7" W.C. Low Fire and 3.5" W.C. High Fire for variable heat output.
  • Genuine OEM Reliability: Official Lennox replacement part ensures 100% electrical and mechanical compatibility.
  • Advanced Configuration: Includes a factory-installed 0.25" straight plug for simplified installation in modern cabinets.
  • Safety Integration: Regulates gas pressure and provides an immediate shut-off response to control board safety signals. 


Product Details and Key Specifications:

  • Part Number: 103181-01 (Catalog # 77W04)
  • Manufacturer: White-Rodgers / Emerson (Lennox OEM)
  • Model Number: 36J55-254P1
  • Gas Type: Natural Gas (NG)
  • Voltage: 24 VAC, 50/60 Hz
  • Inlet / Outlet Size: 1/2" NPT
  • Regulator Setting (Hi Fire): 3.5" W.C. +/- 0.3" @ 80K Btu/HR
  • Regulator Setting (Lo Fire): 1.7" W.C. +/- 0.3"
  • Straight Plug (0.25"): Yes
  • Shipping Weight: Approx. 2.8 lbs 


🛠️ HVAC Depot Pro Tip: Manometer Verification

After installing the 103181-01, it is essential to use a digital manometer to verify the manifold pressure for both stages. While factory-set, local gas pressure and altitude can affect performance. Adjusting the valve to the exact specs on your furnace rating plate (typically 1.7" for low and 3.5" for high) ensures the cleanest combustion and prevents premature heat exchanger failure.


The 103181-01 is a direct OEM replacement for the following part numbers:

  • OEM Numbers:

    103181-01, 77W04, 77W0401.
  • White-Rodgers:

    36J55-254P1. 


Extensive Model Compatibility List:

Note: Use 'CTRL+F' to search for your specific model and revision number:


  • Lennox Elite EL280 Series:

    EL280DF070/090/110, EL280UH045/070/090/110/135 (Revisions 01-03).
  • Lennox Signature SL280 Series:

    SL280DF070/090/110, SL280UH070/090/110/135 (Revisions 02-09).
  • Lennox Merit/Legacy Series:

    G24-200A, G25MV, G27M, G29M, ML180UH (Revision 55-56).
  • Lennox LRP16 Series:

    LRP16GE24/36/48/60 Packaged Units (Revisions 01-02).



Specification

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Last Updated: June 2026

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Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

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Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

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Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

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HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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