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Lennox 49K03 / 041239-07 OEM TXV Expansion Valve – R-22, 3 Ton, External Equalizer

Name: Lennox 49K03 / 041239-07 OEM TXV Expansion Valve – R-22, 3 Ton, External Equalizer
Brand: Lennox
SKU: 66255131241
Price: 192.80 USD
Availability: InStock

In stock

$192.80 USD

Sale Sold out

Shipping calculated at checkout.

Lennox 49K03 / 041239-07 R-22 TXV Expansion Valve

Genuine Lennox OEM thermal expansion valve
Designed for 3-ton HVAC applications
Specifically designed for R-22 refrigerant
Externally equalized TXV design
Refrigerant metering valve for compatible Lennox air handlers and evaporator coils

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Specifications

Specification

Details

Brand

Lennox

Catalog Number

49K03

Model / Part Number

041239-07

Product Type

Thermal Expansion Valve

Common Name

TXV

Refrigerant

R-22

Nominal Capacity

3 Ton

Nominal Capacity Class

36,000 BTU

Equalizer Type

External

Application

Air Handler / Evaporator Coil

Function

Refrigerant Metering

OEM Component

Yes

description

The Lennox 49K03, model/part 041239-07, is a genuine OEM thermal expansion valve (TXV) designed for select Lennox air handlers and evaporator coil applications.

This expansion valve is designed for R-22 refrigerant and 3-ton HVAC applications. The TXV regulates refrigerant flow entering the evaporator coil based on system operating conditions, helping maintain proper superheat, cooling capacity, and overall system performance.

Key Features & Function

Genuine Lennox OEM component
Cat #: 49K03
Model / Part #: 041239-07
Thermal Expansion Valve (TXV)
Designed for R-22 refrigerant
3 Ton nominal application
Approximately 36,000 BTU nominal capacity class
Externally equalized design
Controls refrigerant flow into the evaporator coil
Helps maintain proper evaporator superheat
Designed for compatible Lennox indoor HVAC equipment
Suitable for select air-handler and evaporator-coil applications

Product Details & Key Specifications

Specification	Details
Brand	Lennox
Catalog Number	49K03
Model / Part Number	041239-07
Product Type	Thermal Expansion Valve
Common Name	TXV
Refrigerant	R-22
Nominal Capacity	3 Ton
Nominal Capacity Class	36,000 BTU
Equalizer Type	External
Application	Air Handler / Evaporator Coil
Function	Refrigerant Metering
OEM Component	Yes

🛠️ HVAC Depot Pro Tip

When replacing a TXV, do not match the valve by tonnage alone. A 3-ton R-410A expansion valve is not automatically interchangeable with a 3-ton R-22 valve.

For this part, verify:

Catalog Number: 49K03
Part Number: 041239-07
Refrigerant: R-22
Nominal Capacity: 3 Ton
Valve Type: TXV / Thermal Expansion Valve
Equalizer: External

Also verify the complete indoor coil or air-handler model and the outdoor condenser model before ordering. The refrigerant, capacity, connection configuration, distributor arrangement, and manufacturer charging requirements should all match the original system.

Equipment / Model Compatibility

The Lennox 49K03 / 041239-07 is designed for select Lennox R-22 air handlers and evaporator coil systems requiring this specific TXV.

Documented applications include select equipment from families such as:

Lennox CB28UH Series
Lennox CB29M Series
Lennox R-22 air handlers
Lennox R-22 evaporator coil applications
3-ton systems specifically calling for 49K03
Equipment specifically calling for 041239-07

Because Lennox used different expansion valves depending on equipment size, refrigerant, and coil configuration, always verify the complete 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

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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Questions? We’ve got you covered

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

We are open to the public! Homeowners, landlords, and DIYers are all welcome—no license required.

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?

Absolutely! Bring in the part, model number, or a picture, and our team will help match you with the correct replacement.

Do you offer returns or exchanges on parts?

Yes, we accept returns or exchanges within a set time period—just make sure the item is unused and in original packaging. Ask for specific terms at the counter.

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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We offer both! You can shop in person or call to arrange shipping if you're out of town.

Lennox 49K03 / 041239-07 OEM TXV Expansion Valve – R-22, 3 Ton, External Equalizer