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Lennox / Allied 70L53 / 20256701 OEM Natural Gas SmartValve – 24V, 1/2" x 1/2" NPT, Intermittent Hot Surface Pilot Ignition

Lennox / Allied 70L53 / 20256701 OEM Natural Gas SmartValve – 24V, 1/2" x 1/2" NPT, Intermittent Hot Surface Pilot Ignition

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Regular price $1,300.00 USD
Regular price Sale price $1,300.00 USD
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Lennox 70L53 / 20256701 Natural Gas SmartValve

  • OEM Lennox / Allied gas valve and ignition control

  • 24 VAC, 50/60 Hz operation

  • 1/2" x 1/2" NPT gas connections

  • Designed for intermittent hot surface pilot ignition

  • SmartValve-style slow-opening natural gas control

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Specifications

Specification

Details

Brand

Lennox / Allied

Catalog Number

70L53

Model / Part Number

20256701

Product Type

Gas Valve / Ignition Control

Fuel Type

Natural Gas

Voltage

24 VAC

Frequency

50/60 Hz

Inlet Connection

1/2" NPT

Outlet Connection

1/2" NPT

Connection Configuration

1/2" x 1/2" NPT

Ignition Type

Intermittent Hot Surface Pilot

Valve Operation

Slow Opening

Control Type

SmartValve-Style

Application

Furnace / Gas Heating Equipment

OEM Component

Yes

 

description

The Lennox / Allied 70L53, model/part 20256701, is an OEM natural gas valve and ignition control assembly designed for select Lennox and Allied gas-fired heating equipment.

This valve operates on 24 VAC and features 1/2" x 1/2" NPT gas connections. It is designed for intermittent hot surface pilot ignition applications and uses a SmartValve-style configuration that integrates gas-flow control with the furnace ignition sequence.

Key Features & Function

  • Genuine Lennox / Allied OEM replacement component
  • Cat #: 70L53
  • Model / Part #: 20256701
  • Natural gas application
  • 24 VAC operation
  • 50/60 Hz
  • 1/2" x 1/2" NPT connections
  • Intermittent hot surface pilot ignition
  • SmartValve-style gas control
  • Slow-opening operation
  • Controls natural gas flow to the burner assembly
  • Works with the furnace ignition sequence
  • Designed for compatible Lennox and Allied heating equipment

Product Details & Specifications

Specification

Details

Brand

Lennox / Allied

Catalog Number

70L53

Model / Part Number

20256701

Product Type

Gas Valve / Ignition Control

Fuel Type

Natural Gas

Voltage

24 VAC

Frequency

50/60 Hz

Inlet Connection

1/2" NPT

Outlet Connection

1/2" NPT

Connection Configuration

1/2" x 1/2" NPT

Ignition Type

Intermittent Hot Surface Pilot

Valve Operation

Slow Opening

Control Type

SmartValve-Style

Application

Furnace / Gas Heating Equipment

OEM Component

Yes

🛠️ HVAC Depot Pro Tip

The 70L53 / 20256701 is not simply a standard 24V furnace gas valve. Its ignition-control configuration is an important part of the application.

When replacing this valve, verify:

Cat #: 70L53
Part #: 20256701
Fuel: Natural Gas
Voltage: 24 VAC
Frequency: 50/60 Hz
Connections: 1/2" x 1/2" NPT
Ignition: Intermittent Hot Surface Pilot

Do not substitute a conventional 24V gas valve simply because the voltage and pipe connections are the same.

Gas-valve installation should include proper leak testing, inlet and manifold-pressure verification, ignition testing, and combustion checks according to the equipment manufacturer's procedures and applicable codes.

Equipment / Model Compatibility

The Lennox / Allied 70L53 / 20256701 is designed for select gas-fired heating equipment requiring this specific gas valve and ignition-control configuration.

Applications include select:

  • Lennox heating equipment
  • Allied heating equipment
  • Gas furnaces
  • Intermittent hot surface pilot systems
  • SmartValve-style ignition systems
  • FPBB Series equipment
  • FPBB075A3
  • FPBB100A4
  • Equipment specifically calling for 20256701

Always verify the complete equipment model and serial number before ordering.

 

 

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

  • The item must be unused, uninstalled, and in its original condition.
  • 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.

Non-Returnable Items

The following items are not eligible for return or refund:

  • Installed or used parts.
  • Products showing signs of installation, modification, or damage caused after delivery.
  • Items missing original packaging.
  • Sale or clearance items.
  • Special-order or custom-order products.
  • Returns requested more than 30 days after delivery.

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.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

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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