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Service First / Trane SFMB503SP2V Direct Drive Blower Motor – 1/2 HP, 208/230V, 1075 RPM, 3-Speed

Service First / Trane SFMB503SP2V Direct Drive Blower Motor – 1/2 HP, 208/230V, 1075 RPM, 3-Speed

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Regular price $250.00 USD
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Service First SFMB503SP2V blower motor, 1/2 HP, 208/230V, 1075 RPM, 3-speed, 48-frame direct-drive motor for furnace and air handler applications

  • 1/2 HP direct-drive HVAC blower motor

  • 208/230V single-phase operation

  • 1075 RPM with 3-speed airflow operation

  • 48-frame OAO design with sleeve bearings

  • Service First / Trane blower motor for compatible furnaces and air handlers

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Specifications

Product Details & Key Specifications

SpecificationDetailsBrandService First / TranePart Number / MPNSFMB503SP2VProduct TypeDirect Drive Blower MotorHorsepower1/2 HPVoltage208/230VRPM1075 RPMNumber of Speeds3PhaseSingle PhaseFrequency50/60 HzMotor TypePSCFrame Size48EnclosureOpen Air Over (OAO)Bearing TypeSleeveDrive TypeDirect DriveMountingBelly BandRotationCCWCapacitor Voltage370VApplicationFurnace / Air Handler BlowerManufacturerTrane

description

Service First / Trane SFMB503SP2V is a direct-drive replacement blower motor designed for compatible residential and light-commercial HVAC systems. It is rated at 1/2 HP, 208/230V, 1075 RPM, 3-speed operation, and single phase.

This motor features a 48-frame, Open Air Over (OAO) design with sleeve bearings and is intended for direct-drive furnace and air-handler blower applications. Trane documentation specifies use with a 370V run capacitor.

Key Features & Function

  • Service First / Trane

  • Part Number: SFMB503SP2V

  • 1/2 HP

  • 208/230V

  • 1075 RPM

  • 3-Speed

  • Single Phase

  • 50/60 Hz

  • 48 Frame

  • Direct Drive

  • Open Air Over (OAO)

  • Sleeve Bearings

  • Belly Band Mount

  • CCW Rotation

  • Designed for furnace and air-handler blower applications

  • Uses a 370V run capacitor

Trane's catalog confirms the 1/2 HP, 208/230V, 1075 RPM, 3-speed, OAO, 48-frame specifications. Parts Town additionally identifies the motor as single-phase with belly-band mounting and CCW rotation.

Product Details & Key Specifications

Specification Details
Brand Service First / Trane
Part Number / MPN SFMB503SP2V
Product Type Direct Drive Blower Motor
Horsepower 1/2 HP
Voltage 208/230V
RPM 1075 RPM
Number of Speeds 3
Phase Single Phase
Frequency 50/60 Hz
Motor Type PSC
Frame Size 48
Enclosure Open Air Over (OAO)
Bearing Type Sleeve
Drive Type Direct Drive
Mounting Belly Band
Rotation CCW
Capacitor Voltage 370V
Application Furnace / Air Handler Blower
Manufacturer Trane

🛠️ HVAC Depot Pro Tip

The SFMB503SP2V is specifically the 208/230V version of this 1/2 HP Service First blower motor.

Do not confuse it with:

SFMB503SP1V → 1/2 HP | 115V | 1075 RPM | 3-Speed

SFMB503SP2V → 1/2 HP | 208/230V | 1075 RPM | 3-Speed

Before installation, verify the original motor's voltage, horsepower, RPM, shaft dimensions, rotation, mounting, amperage, and required capacitor MFD. Trane lists both voltage versions separately.

Cross-Reference & Replacement Information

Manufacturer Part Number:
SFMB503SP2V

Parts Town Reference:
TRNSFMB503SP2V

For this product page, I would not add unverified OEM motor cross-references. Matching only 1/2 HP and 1075 RPM isn't sufficient to guarantee direct compatibility.

Equipment Compatibility

The SFMB503SP2V is designed for compatible:

  • Furnaces

  • Air handlers

  • Direct-drive blower assemblies

  • Residential HVAC equipment

  • Light-commercial HVAC equipment

For exact equipment compatibility, verify the original motor part number or complete unit model and serial number.

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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Frequently Asked Questions

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