What are the specs for this Transformer?

The correct replacement for ICP model WPG4364060LKA1 — 208/230V to 24V | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number WPG4364060LKA1 — 208/230V to 24V | Ships Today.

ICP

ICP 40VA Transformer for WPG4364060LKA1 — 208/230V to 24V | Ships Today

Name: ICP 40VA Transformer for WPG4364060LKA1 — 208/230V to 24V | Ships Today
Brand: ICP
SKU: 1178431-GEN
Price: 34.95 USD
Availability: InStock

SKU: 1178431-GEN Brand: ICP

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Overview

This OEM control transformer kit replaces the 40VA step-down transformer (part number 1173691, TRANS 208/230>24 40VA) and its 24V terminal barrier (part number 1178431, BARRIER 24V) on the ICP/Tempstar/Heil WPG4364060LKA1. The transformer drops 208/230V line power to the 24V control voltage that powers the thermostat, control board, contactor coil, and gas valve. When it fails — open winding, burnt secondary, or overload from a shorted 24V circuit — you lose all control power: a dead thermostat, no call for cooling or heat, and a unit that appears completely off.

Specifications

Spec	Value
Part Numbers	1173691 (transformer), 1178431 (24V barrier)
Type	Step-Down Control Transformer
Brand	ICP / Tempstar / Heil
Primary Voltage	208/230V
Secondary Voltage	24V
Rating	40 VA
Application	Furnace / Packaged Unit Control Circuit

Compatibility

Direct OEM replacement for the control transformer and 24V barrier on the ICP/Tempstar/Heil WPG4364060LKA1 packaged unit and related WPG43-series models using the same 208/230-to-24V, 40VA control circuit.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter.
Access — Remove the control-panel service cover to reach the transformer and barrier.
Document — Photograph the primary and secondary lead colors and the barrier wiring before disconnecting.
Remove — Label and disconnect the leads, then unscrew the old transformer and barrier.
Install — Mount the new transformer and 24V barrier, then reconnect primary and secondary per your photo.
Test — Restore power and confirm 24V across the secondary and a working thermostat call.

Signs You Need a Replacement

No 24V control voltage; thermostat is dead
System won't respond to any call for heat or cool
Burnt smell or discoloration at the transformer
Repeatedly blown low-voltage fuse or tripped overload

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

ICP 40VA Transformer for WPG4364...

$34.95

Frequently Asked Questions

Does this Transformer fit my ICP WPG4364060LKA1 — 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WPG4364060LKA1 — 208/230V to 24V | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the transformer on my ICP WPG4364060LKA1 — 208/230V to 24V | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.

My thermostat has no power. What failed?

Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.

Is this transformer compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP transformer?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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