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Lennox Furnace Control Board 23C48, Direct Replacement for 79W84, 607436-02, 103217-02

Lennox Furnace Control Board 23C48, Direct Replacement for 79W84, 607436-02, 103217-02

Low stock: 3 left

Regular price $377.00 USD
Regular price Sale price $377.00 USD
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Key Features & Specifications

  • OEM Authorized replacement part for over a dozen Lennox furnace ignition control boards

  • Direct Drop in replacement configuration designed for easy installation

  • Primary service replacement kit for 27P19 / 606436-6 23C48, 16C81, 85W79,and 79W84

  • 120V HSI Ignitor compatibility only.

  • Replaces 79W84, 85W79, 16C81 older boards.

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Specifications

Product Details and Key Specifications:

  • Part Number: 607436-05 (Also known as Kit 23C48)
  • Manufacturer: Lennox / Armstrong / Ducane (Genuine OEM)
  • Part Type: Integrated Furnace Control Board (IFC) Kit
  • Catalog Number: 23C48
  • EAN / UPC: 66255157131
  • Voltage: 120V AC Ignitor Only
  • Gross Weight: 2.5 Lbs

description

Lennox 23C48 – Genuine OEM Replacement Integrated Furnace Control Board Kit, 120V Ignitor


The Lennox 23C48 is an ignition control kit designed as a direct replacement for older control boards in gas furnaces that feature a constant torque indoor blower motor and use a 120V ignitor. This replacement kit includes the integrated control module (Part #107163-01), a diagnostic label, and a full instruction manual, providing a comprehensive solution for restoring furnace operation. This sophisticated module acts as the brain of the HVAC system, managing the ignition sequence, safety checks, and blower operations efficiently and safely.

 

As a Genuine OEM part (also known as Part Number 607436-05), the 23C48 guarantees a direct, plug-and-play replacement for a wide array of superseded control boards, ensuring perfect electrical compatibility. It is crucial to note that this board must not be used in furnaces requiring 70V or 95V ignitors, as incorrect voltage will cause immediate component failure.


Key Features and Function:

  • Integrated System Management – Controls all sequences for ignition, airflow, and safety monitoring from a single board.
  • Genuine OEM Reliability & Fitment – Exact factory specifications ensure plug-and-play compatibility and immediate functionality.
  • Advanced Diagnostics – Features LED status lights to provide real-time error codes for rapid troubleshooting and repair.
  • 120V Ignitor Compatibility – Specifically designed to integrate seamlessly with 120V HSI (Hot Surface Ignition) systems.


Product Details and Key Specifications:

  • Part Number: 607436-05 (Also known as Kit 23C48)
  • Manufacturer: Lennox / Armstrong / Ducane (Genuine OEM)
  • Part Type: Integrated Furnace Control Board (IFC) Kit
  • Catalog Number: 23C48
  • EAN / UPC: 66255157131
  • Voltage: 120V AC Ignitor Only
  • Gross Weight: 2.5 Lbs


🛠️ HVAC Depot Pro Tip: The Static Guard

When installing a new control board like the 23C48, static electricity is its greatest enemy. Always touch a grounded metal surface before handling the board, and ideally, wear an anti-static wrist strap. A static discharge can immediately fry internal circuits, voiding the warranty and ruining the new part.


The 23C48 furnace control board replaces the following Allied, Ducane, and Lennox control boards:

  • OEM Numbers This Control Board Replaces:

  • 23C48, 79W84, 27P19, 16C81, 85W79, 627562-01, 607436-05, 607436-03, 607436-02, 607436-01, 103217-02, 103217-01.


Extensive Model Compatibility List:

Note: Use 'CTRL+F' to search for your specific model (full model number required for specific verification):

Lennox, Armstrong, and Ducane Series (representative examples):


  • G40UH Series: G40UH-48C-110-15, G40UH-36A-070-3, G40UH-36A-070-15
  • G50UH Series: G50UH-36A-070-2
  • G51MP Series: G51MP-48C-090-3, G51MP-36B-070-2, G51MP-36B-070-1
  • Older G-Series: G26Q3-75-6, G26Q3-75-1, G23Q3-100-4, G21Q3-80-1-1, G20Q3E-75-4, G14Q3-80-19
  • Other Models: 80UHG3-75A-3, 80MGF3-75A-1

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

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Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

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  • The item must be returned in its original packaging.
  • Model numbers and serial numbers must match the original purchase records.
  • Proof of purchase or order confirmation is required.

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Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

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

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

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To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
  • A defective product,
  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

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

Professional Installation Notice

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

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

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

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

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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