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Lennox 10M24 / 103881-02 OEM 3/4" Suction Line Service Valve – HVAC Refrigeration Valve

Name: Lennox 10M24 / 103881-02 OEM 3/4" Suction Line Service Valve – HVAC Refrigeration Valve
Brand: Lennox
SKU: 10M24
Price: 100.00 USD
Availability: OutOfStock

Out of stock

$100.00 USD

Sale Sold out

Shipping calculated at checkout.

Lennox 10M24 / 103881-02 3/4" Suction Line Service Valve

Genuine Lennox OEM service valve
3/4-inch suction-line application
Designed for HVAC refrigeration circuits
For select Lennox air conditioners and heat pumps
Cat # 10M24 – Model / Part # 103881-02

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Specifications

Specification Details

Brand Lennox

Catalog Number 10M24

Model / Part Number 103881-02

Product Type Service Valve

Nominal Size 3/4"

Line Application Suction Line

Application HVAC Refrigeration Circuit

Equipment Type Air Conditioner / Heat Pump

Location Outdoor Unit

Function Refrigerant Service / Isolation

OEM Component Yes

description

The Lennox 10M24, model/part 103881-02, is a genuine OEM 3/4-inch suction line service valve designed for select Lennox air conditioners, heat pumps, and outdoor condensing equipment. Lennox currently identifies 10M24 with model/part number 103881-02, while current parts documentation identifies it specifically as a 3/4" suction-line service valve.

Installed in the outdoor unit's refrigeration circuit, the service valve provides controlled access to the suction side of the system for approved charging, recovery, evacuation, pressure testing, and HVAC service procedures.

Key Features & Function

Genuine Lennox OEM component
Cat #: 10M24
Model / Part #: 103881-02
3/4-inch service valve
Suction line application
Refrigeration circuit service valve
Provides refrigerant service access
Designed for select Lennox outdoor HVAC equipment
Used in compatible air conditioners and heat pumps
OEM replacement component
Current replacement for certain earlier Lennox 3/4" service-valve configurations
The 3/4-inch suction-line designation is supported by current OEM-parts listings.

🛠️ HVAC Depot Pro Tip

Do not confuse Lennox 10M24 with Lennox 10M23.

10M23 / 103881-01 = 3/8" liquid-line service valve
10M24 / 103881-02 = 3/4" suction-line service valve

Before ordering the 10M24, verify:
- Cat # 10M24
- Part # 103881-02
- 3/4-inch line size
- Suction-line application
- Existing valve configuration
- Outdoor unit model and serial number
- Refrigerant and system requirements
Lennox equipment documentation confirms that 3/4-inch suction service valves are used on certain smaller-capacity outdoor-unit configurations, while other capacities may require 7/8" or 1-1/8" suction valves.

Equipment / Model Compatibility

The Lennox 10M24 / 103881-02 is used in select Lennox outdoor HVAC equipment requiring a 3/4-inch suction-line service valve, including compatible:
- Lennox air conditioners
- Lennox heat pumps
- Outdoor condensing units
- Split-system HVAC equipment
- Equipment specifically calling for 10M24
- Equipment specifically calling for 103881-02
The 10M24 appears in documented Lennox equipment parts lists, including select HSXA and 10ACC air conditioners.

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

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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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?

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Lennox 10M24 / 103881-02 OEM 3/4" Suction Line Service Valve – HVAC Refrigeration Valve