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Lennox 25C02 / 104110-10 OEM TXV Thermal Expansion Valve – 6 Ton, R-410A Refrigerant

Lennox 25C02 / 104110-10 OEM TXV Thermal Expansion Valve – 6 Ton, R-410A Refrigerant

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Lennox 25C02 / 104110-10 6-Ton R-410A TXV

  • Genuine Lennox OEM thermal expansion valve

  • 6-ton refrigerant metering capacity

  • Designed for compatible R-410A HVAC systems

  • Regulates refrigerant flow into the evaporator coil

  • Cat # 25C02 – Model / Part # 104110-10

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Specifications

Specification

Details

Brand

Lennox

Catalog Number

25C02

Model / Part Number

104110-10

Product Type

Thermal Expansion Valve

Common Name

TXV

Capacity

6 Ton

Refrigerant

R-410A

Function

Refrigerant Metering

Application

HVAC Refrigeration Circuit

Equipment Type

Air Conditioning / Compatible HVAC Systems

OEM Component

Yes

Manufacturer

Lennox

 

description

The Sanhua Y8737 / RFGF05E-6.0-783 is a thermal expansion check valve (TXV) designed for compatible R-410A air conditioning and heat pump systems ranging from 3.5 to 5 tons.

This refrigerant metering device regulates refrigerant flow into the evaporator coil as system operating conditions change. Proper TXV operation helps maintain the correct refrigerant feed and superheat for efficient evaporator performance.

The valve is identified as Sanhua model RFGF05E-6.0-783, Cat # Y8737, with 25C02 used as the newer replacement catalog number.

Key Features & Function

  • Brand: Sanhua
  • Cat #: Y8737
  • Replacement Cat #: 25C02
  • Model / Part #: RFGF05E-6.0-783
  • Thermal Expansion Valve (TXV)
  • Expansion check valve design
  • R-410A refrigerant
  • Designed for 3.5 to 5 ton systems
  • 6-ton rated valve body
  • Refrigerant metering device
  • Regulates refrigerant entering the evaporator coil
  • Designed for compatible air conditioning applications
  • Designed for compatible heat pump applications
  • Indoor evaporator coil application

Product Details & Specifications

Specification

Details

Brand

Sanhua

Catalog Number

Y8737

Replacement Catalog Number

25C02

Model / Part Number

RFGF05E-6.0-783

Product Type

Thermal Expansion Check Valve

Common Name

TXV

Refrigerant

R-410A

System Capacity

3.5–5 Ton

Valve Rating

6 Ton

Application

Indoor Evaporator Coil

System Type

Air Conditioner / Heat Pump

Function

Refrigerant Metering

Manufacturer

Sanhua

🛠️ HVAC Depot Pro Tip

Do not confuse the 6-ton valve rating with the intended system application.

For the Y8737 / RFGF05E-6.0-783:

System Application: 3.5 to 5 Ton

Valve Rating: 6 Ton

Refrigerant: R-410A

Before replacing a TXV, always verify:

  • Indoor evaporator coil model
  • Outdoor condenser or heat pump model
  • R-410A refrigerant
  • System capacity
  • Required TXV
  • Valve connections
  • Distributor configuration
  • Manufacturer's charging requirements

Do not select a TXV by tonnage alone. The correct metering device must match the equipment combination and refrigerant.

Equipment / Model Compatibility

The Sanhua Y8737 / RFGF05E-6.0-783 is intended for compatible:

  • 3.5-ton R-410A systems
  • 4-ton R-410A systems
  • 5-ton R-410A systems
  • Central air conditioners
  • Heat pump systems
  • Indoor evaporator coils
  • Select Lennox-family HVAC equipment requiring this TXV

Always verify compatibility using 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

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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We carry blower motors, fan motors, capacitors, control boards, contactors, thermostats, filters, copper lines, refrigerants, and more.

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