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

4.9/5 based on 4750 reviews

Trane Service First SFCAP50D75440R Dual Run Capacitor 50+7.5 MFD 370/440V Round

Trane Service First SFCAP50D75440R Dual Run Capacitor 50+7.5 MFD 370/440V Round

Low stock: 5 left

Regular price $39.99 USD
Regular price Sale price $39.99 USD
Sale Sold out
Shipping calculated at checkout.

Quick Features & Specifications

  • Restores Reliable Start-Up: Ensures the compressor receives the necessary electrical torque to start instantly in high heat.

  • Eliminates System Humming: Resolves common electrical noise issues associated with weakened or failed run capacitors.

  • Maximizes Cooling Efficiency: Stable microfarad levels help the system maintain its rated SEER efficiency and lower energy bills.

  • Universal 440V Upgrade: Higher voltage rating provides a superior safety margin compared to standard 370V capacitors.

  • Direct OEM Replacement: Guaranteed to fit original Trane mounting straps and terminal leads without modification.

Please visit our store for pick up.

Quantity

safe & secure Checkout

Fast & Tracked Delivery
30 Day money back guarantee

Specifications

Product Details:

  • Brand: Service First / Trane / American Standard
  • Manufacturer: Trane Technologies
  • Part #: SFCAP50D75440R
  • Shipping Weight: 2.0 LB
  • Voltage: 370/440 VAC
  • Capacitance: 50 + 7.5 MFD
  • Shape: Round Can
  • Type: Dual Run Capacitor
  • Performance Lifetime: 60,000 Hours 

description

Trane Service First SFCAP50D75440R Dual Run Capacitor 50+7.5 MFD 370/440V Round 


The Trane Service First SFCAP50D75440R is a factory-authorized OEM replacement part engineered to serve as the critical electrical "brain" and power stabilizer for high-demand condensing units. Designed specifically for Trane and American Standard air conditioner and heat pump series, this dual-run component manages the precise energy sequencing required by both the compressor and the condenser fan motor. By facilitating a clean phase shift, it ensures your heating and cooling system initiates cycles efficiently, protecting expensive motor windings from heat-related stress and maintaining your air conditioners system's overall operational health. 


Key Features:

  • Genuine OEM Fit: Part number SFCAP50D75440R is a real Trane OEM replacement, built to the exact factory specifications of your original unit.
  • Dual Run Support: Features a 50+7.5 MFD rating to power the primary compressor (HERM) and the fan motor (FAN) simultaneously from a single canister.
  • Resolves Ignition Issues: Specifically engineered to eliminate "hard starts," humming noises, and startup failures caused by weakened legacy capacitors.
  • Advanced Safety Shielding: Equipped with an internal pressure-sensitive safety interrupter designed to disconnect the capacitor in the event of an internal fault.
  • Industrial Durability: Rated for 440VAC to handle higher voltage spikes and extreme outdoor cabinet temperatures far more effectively than standard 370V alternatives. 


Product Details:

  • Brand: Service First / Trane / American Standard
  • Manufacturer: Trane Technologies
  • Part #: SFCAP50D75440R
  • Shipping Weight: 2.0 LB
  • Voltage: 370/440 VAC
  • Capacitance: 50 + 7.5 MFD
  • Shape: Round Can
  • Type: Dual Run Capacitor
  • Performance Lifetime: 60,000 Hours 


🛠️ HVAC Depot Pro Tip:

Safety is the first priority when handling electrical storage components. Always disconnect the main power at the outdoor disconnect box and discharge the old capacitor by shorting the terminals with an insulated-handle screwdriver. Take a Picture First of the original wiring configuration—specifically the "C" (Common), "HERM" (Compressor), and "FAN" terminals. During your diagnostic check, ensure the mounting strap is tightened securely to prevent vibration, which can lead to premature terminal failure. 


Cross-Reference:

  • Superseded/Legacy:

    HCKY500D075R440318Z6, CPT00667, CPT0667
  • Equivalent Brands:

    Supco CD50+7.5X440R, Mars 12289, Hartland Controls CAP-50/7.5/440R
  • Alternative Manufacturers:

    ClimaTek SFCAP50D75440R Replacement 


Model Compatibility:

  • 4TTR (Suffixes: 3042A, 4042A, 6042B)
  • 2TTR (Suffixes: 3042A, 4042A)
  • 4TTB (Suffixes: 3042A, 4042A)
  • 4TWA (Suffixes: 3042A, 4042A)
  • 4TWX (Suffixes: 4042A, 5042A)
  • 2TWA (Suffixes: 3042A)

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
View full details

Happy Shouts From Our Thrilled Customers

YOU MAY ALSO LIKE

Explore More Products

HVAC Parts and Equipment Depot

Frequently Asked Questions

Questions? We’ve got you covered

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

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

Yes, we stock OEM and compatible replacement parts for major brands including Trane, Goodman, Lennox, Carrier, Rheem, and others.

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

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.

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

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

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