What are the specs for this Transformer?

The correct replacement for ICP model WFHR040B024A1 - OEM 1177217 | 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 WFHR040B024A1 - OEM 1177217 | Ships Today.

ICP

ICP 40VA Transformer 120-24V for WFHR040B024A1 - OEM 1177217 | Ships Today

Name: ICP 40VA Transformer 120-24V for WFHR040B024A1 - OEM 1177217 | Ships Today
Brand: ICP
SKU: 1177217
Price: 37.64 USD
Availability: InStock

SKU: 1177217 Brand: ICP

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Overview

This is the genuine OEM control transformer (part number 1177217) for the ICP / Heil / Tempstar WFHR040B024A1. Rated at 40VA with a 120-volt primary and 24-volt secondary, it steps line voltage down to the low-voltage power the thermostat, control board, gas valve, and relays all depend on. A failed transformer means a completely dead control circuit - no thermostat display, no ignition, no fan. Transformers commonly fail from a shorted secondary, an overloaded 24V circuit, or an internal open winding. Installing the correct 40VA OEM transformer restores stable low-voltage power to the entire control system.

Specifications

Spec	Value
Part Number	1177217
Type	Control Transformer
Brand	ICP / Heil / Tempstar
Rating	40 VA
Primary Voltage	120 V
Secondary Voltage	24 V
Fitment	OEM exact-fit
Fits Model	WFHR040B024A1

Compatibility

Direct OEM replacement for the ICP / Heil / Tempstar WFHR040B024A1 and matches the original 40VA 120-24V rating and mounting footprint for a clean swap.

Installation Guide

Safety First - Disconnect power at the breaker and verify zero voltage with a multimeter.
Access - Remove the service panel to reach the transformer and control wiring.
Document - Photograph the primary (line) and secondary (24V) wire connections before disconnecting.
Remove - Disconnect both sets of leads, remove the mounting screws, and take out the old transformer.
Install - Mount the new transformer, then reconnect the 120V primary and 24V secondary leads exactly per your photo.
Test - Restore power and confirm 24V across the secondary and a live thermostat and control circuit.

Signs You Need a Replacement

Blank thermostat and completely dead low-voltage circuit
No 24V output measured at the secondary terminals
Repeatedly blown low-voltage fuse after a short is cleared
Burnt smell or visibly scorched transformer body

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 120-24V for...

$37.64

Frequently Asked Questions

Does this Transformer fit my ICP WFHR040B024A1 - OEM 1177217 | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WFHR040B024A1 - OEM 1177217 | 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 WFHR040B024A1 - OEM 1177217 | 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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