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Lennox 26K34 / LB-85663J OEM TXV Expansion Valve Kit – R-22, 1.5 to 3 Ton Air Conditioning Systems

Name: Lennox 26K34 / LB-85663J OEM TXV Expansion Valve Kit – R-22, 1.5 to 3 Ton Air Conditioning Systems
Brand: Lennox
SKU: 26K34
Price: 152.00 USD
Availability: OutOfStock

Out of stock

$152.00 USD

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Lennox 26K34 / LB-85663J R-22 TXV Expansion Valve Kit

Genuine Lennox OEM thermal expansion valve kit
Designed for 1.5 to 3 ton HVAC systems
Specifically designed for R-22 refrigerant
Controls refrigerant flow into the indoor evaporator coil
Cat # 26K34 – Model / Part # LB-85663J

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Specifications

Specification Details

Brand Lennox

Catalog Number 26K34

Model / Part Number LB-85663J

Product Type TXV Expansion Valve Kit

Valve Type Thermal Expansion Valve

Refrigerant R-22

Capacity Range 1.5–3 Ton

Nominal Applications 18,000–36,000 BTU

Installation Location Indoor

Function Refrigerant Metering

Application Air Conditioning / Evaporator Coil

OEM Component Yes

description

The Lennox 26K34, model/part LB-85663J, is a genuine OEM thermal expansion valve (TXV) kit designed for compatible 1.5 to 3 ton R-22 air conditioning systems. Lennox identifies the 26K34 specifically as an indoor R-22 TXV kit covering the 1.5–3 ton range.

The TXV regulates liquid refrigerant flow entering the evaporator coil according to system operating conditions. Correct refrigerant metering helps maintain proper evaporator superheat, cooling capacity, and system performance.

Key Features & Function

Genuine Lennox OEM component
Cat #: 26K34
Model / Part #: LB-85663J
Thermal Expansion Valve (TXV) kit
Designed for R-22 refrigerant
1.5 to 3 ton capacity range
Indoor evaporator-coil application
Refrigerant metering device
Helps maintain proper evaporator superheat
Designed for compatible Lennox air conditioning systems
Kit includes TXV and installation components

Lennox installation documentation identifies 26K34 / LB-85663J for -018, -024, -030, and -036 applications and specifies that the kit includes the TXV, two Teflon rings, a sensing-bulb mounting strap, and mounting hardware.

The R-22 refrigerant, 1.5–3 ton range, indoor designation, LB-85663J part number, and UPC are listed in Lennox's product specifications.

🛠️ HVAC Depot Pro Tip

Do not choose a TXV based only on system tonnage. For this valve, match:

Cat #: 26K34
Part #: LB-85663J
Refrigerant: R-22
Capacity: 1.5–3 Ton
Application: Air Conditioning

This is especially important because Lennox also used other TXV kits for larger R-22 equipment. For example, Lennox installation documentation assigns 26K34 to -018 through -036 applications, while 26K35 is specified for -042, -048, and -060 applications.

Before ordering, verify the outdoor condenser model, indoor coil or air-handler model, R-22 refrigerant, required TXV kit, and manufacturer charging specifications.

Equipment / Model Compatibility

The Lennox 26K34 / LB-85663J is documented for numerous Lennox R-22 indoor coil and air-handler combinations.

Examples include select:

C33 Series evaporator coils
CR33 Series coils
CH33 Series horizontal coils
CB26UH Series air handlers
CB29M Series air handlers
CB30U Series air handlers
Lennox 13ACD R-22 air-conditioning combinations

Lennox engineering data specifically identifies 26K34 in multiple 1.5-, 2-, 2.5-, and 3-ton equipment combinations.

Always verify the complete indoor and outdoor equipment model numbers 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

Refund & Return Policy

Last Updated: June 2026

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

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Can anyone buy from your store, or do I need to be a licensed contractor?

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What kinds of HVAC parts do you sell?

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Do you sell parts for specific brands like Trane, Goodman, or Lennox?

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Can you help me find the right part for my system?

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Do you offer returns or exchanges on parts?

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Do you provide technical support or installation services?

While we don't install, we can answer basic questions and refer you to trusted local HVAC technicians if needed.

Do you sell refrigerants to the public?

We sell certain refrigerants, but EPA regulations require certification for purchase of products like R-410A or R-22.

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Lennox 26K34 / LB-85663J OEM TXV Expansion Valve Kit – R-22, 1.5 to 3 Ton Air Conditioning Systems