Goodman Transformer 0130M00138S Free Shipping

Goodman 0130M00138S HVAC Transformer Replacement

Ensure your heating and cooling system’s control circuit has the steady power it needs with the Goodman 0130M00138S Transformer. This original Goodman OEM part is a heavy-duty Class II transformer designed to step down high-voltage primary power to the 24V secondary power required by your thermostat, contactors, and control boards.

Available now at Shorty’s HVAC Supplies—offering authentic manufacturer parts and fast shipping across the continental United States.

Product Overview

The 0130M00138S is a versatile "multi-tap" primary transformer, allowing for compatibility with both 208V and 240V power sources. Manufactured under the Tyco Electronics / Products Unlimited model 4000-09E07AE79, this 40VA rated component is a direct drop-in replacement for several older Goodman and Amana part numbers. Its foot-mount design and quick-connect terminals make for a straightforward installation in most air handlers and furnaces.

Technical Specifications

Compatibility and Cross-Reference

This transformer is the factory-authorized replacement for the following part numbers:

• Goodman / Amana: 0130M00138S, B1141643, 4600Y09E07AE79
• Industry Cross-Reference: L38-264, 4000-09E07AE999
• Common Applications: Used extensively in Goodman GSZ, DSZC, and ASZ series heat pumps and air handlers.

Signs of a Failed Transformer

A transformer usually fails due to an external short circuit or a power surge. Look for these symptoms:

• No Power at the Thermostat: If your thermostat screen is blank and the system is unresponsive, the transformer may no longer be providing 24V power.
• Humming or Buzzing: A loud vibration from the control cabinet often indicates internal winding failure.
• Burnt Odor: A "fried" electrical smell near the furnace control board is a common sign of a transformer burnout.
• Tripped Circuit Breakers: A shorted transformer can cause the main HVAC breaker or the low-voltage fuse on the control board to blow repeatedly.

Installation and Safety Tip

Before replacing the transformer, always check for the root cause of the failure. Most transformers blow because of a "short to ground" in the 24V wiring (such as a rubbed wire at the outdoor unit). Replacing the part without fixing the short will likely cause the new transformer to fail immediately.

Shipping Information

• Continental US: Free shipping is available for all orders within the lower 48 states.
• Processing Time: Orders placed before 3:45 PM EST typically ship the same business day for in-stock items.