What are the specs for this Transformer?

The correct replacement for ICP model WAXT304A1 — 208/230V to 24V 40VA | 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 WAXT304A1 — 208/230V to 24V 40VA | Ships Today.

ICP

ICP Transformer for WAXT304A1 — 208/230V to 24V 40VA | Ships Today

Name: ICP Transformer for WAXT304A1 — 208/230V to 24V 40VA | Ships Today
Brand: ICP
SKU: 1172028
Price: 41.60 USD
Availability: InStock

SKU: 1172028 Brand: ICP

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Overview

This OEM control transformer (part number 1172028) steps the 208/230V line supply on your ICP WAXT304A1 down to the 24V control voltage that powers the thermostat circuit, contactor coils, and relays. Rated at 40VA, it carries enough load for the full low-voltage control circuit. A failed transformer — caused by a shorted control wire, a stuck contactor coil, a surge, or aged windings — leaves the system completely unresponsive even with high-voltage power present. This is a very common no-cool/no-heat cause, and a new transformer restores 24V control power right away.

Specifications

Spec	Value
Part Number	1172028
Type	Control Transformer
Brand	ICP / Tempstar / Heil
Primary Voltage	208/230V
Secondary Voltage	24V
Rating	40VA
Fit	OEM Replacement

Compatibility

Directly fits the ICP/Tempstar/Heil WAXT304A1 and other WAXT-series systems that specify the 1172028 transformer. Confirm your existing unit is a 208/230V-to-24V 40VA transformer before replacing.

Installation Guide

Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter.
Access — Remove the service panel to reach the control box.
Document — Photograph all primary and secondary wiring before disconnecting.
Remove — Label and disconnect the line-voltage primary leads and 24V secondary leads, then unbolt the failed transformer from its bracket.
Install — Mount the new transformer, reconnect leads per your photo, and match the 208/230V tap to your supply voltage.
Test — Restore power and confirm 24V across the secondary terminals and normal system operation.

Signs You Need a Replacement

System completely dead (no cooling or heating) despite line power present
No 24V reading across the secondary terminals
Repeatedly blown low-voltage fuse
Burnt smell, scorched case, or melted potting on the transformer

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 Transformer for WAXT304A1 — ...

$41.60

Frequently Asked Questions

Does this Transformer fit my ICP WAXT304A1 — 208/230V to 24V 40VA | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WAXT304A1 — 208/230V to 24V 40VA | 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 WAXT304A1 — 208/230V to 24V 40VA | 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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