What are the specs for this Transformer?

The correct replacement for ICP model WAHT364A2 — 40VA 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 WAHT364A2 — 40VA 208/230V to 24V | Ships Today.

ICP

ICP Transformer for WAHT364A2 — 40VA 208/230V to 24V | Ships Today

Name: ICP Transformer for WAHT364A2 — 40VA 208/230V to 24V | Ships Today
Brand: ICP
SKU: 1172028
Price: 36.34 USD
Availability: InStock

SKU: 1172028 Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM control transformer (part number 1172028) steps 208/230V line voltage down to 24V to power the thermostat, relays, and control board in the ICP WAHT364A2 air handler. Rated at 40VA, it delivers the low-voltage current the control circuit needs to operate reliably. A dead transformer is a leading cause of a no-response system: with no 24V output the thermostat goes blank, relays and contactors will not energize, and the equipment appears completely lifeless. These transformers fail from line-voltage surges, shorted thermostat wiring, or age-related insulation breakdown, frequently accompanied by a burnt smell or scorched casing. This genuine OEM replacement restores stable 24V control power to the WAHT364A2.

Specifications

Spec	Value
Part Number	1172028
Type	Step-Down Control Transformer
Brand	ICP (Tempstar / Heil)
Rating	40 VA
Primary Voltage	208/230V
Secondary Voltage	24V
Fitment	OEM Replacement

Compatibility

Direct OEM fit for the ICP WAHT364A2 air handler and the equivalent Tempstar, Heil, and Comfortmaker units sharing the same platform. Confirm the 1172028 part number and the 208/230V-to-24V, 40VA rating against your existing transformer before installing.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter on both the line and low-voltage sides.
Access — Remove the control/electrical compartment service panel.
Document — Photograph the primary and secondary lead connections before disconnecting.
Remove — Disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the transformer from its bracket.
Install — Mount the new transformer, match the primary taps to your incoming line voltage (208 or 230), and reconnect all leads per your photo.
Test — Restore power, confirm 24V across the secondary terminals, and verify the controls power up.

Signs You Need a Replacement

Blank thermostat and a completely unresponsive system
No 24V measured across the secondary terminals
Burnt odor or visible scorching on the transformer
Low-voltage fuse blows repeatedly after a wiring short

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 WAHT364A2 — ...

$36.34

Frequently Asked Questions

Does this Transformer fit my ICP WAHT364A2 — 40VA 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WAHT364A2 — 40VA 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 WAHT364A2 — 40VA 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.

Menu