What are the specs for this Transformer?

The correct replacement for ICP model Z9MP1075B12B1 — 115V 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 Z9MP1075B12B1 — 115V to 24V | Ships Today.

ICP

ICP 40VA Transformer for Z9MP1075B12B1 — 115V to 24V | Ships Today

Name: ICP 40VA Transformer for Z9MP1075B12B1 — 115V to 24V | Ships Today
Brand: ICP
SKU: 1012722
Price: 37.64 USD
Availability: InStock

SKU: 1012722 Brand: ICP

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Overview

This is the genuine OEM control transformer (part number 1012722, "TRANS 115>24 40VA") for the ICP / Tempstar / Heil Z9MP1075B12B1 gas furnace. It steps line voltage (115V) down to 24V to power the thermostat, gas valve, ignition control, and relays. Rated at 40VA, it supplies enough current for the furnace control circuit plus a typical 24V cooling/accessory load. A failed transformer is one of the most common "furnace completely dead" complaints — no 24V means no call for heat is ever answered. Symptoms include a blank thermostat, no response to a heat call, or a blown low-voltage fuse caused by an internal short.

Specifications

Spec	Value
Part Number	1012722
Type	Control / Step-Down Transformer
Brand	ICP / Tempstar / Heil
Primary Voltage	115V
Secondary Voltage	24V
Rating	40 VA
Fitment	OEM

Compatibility

Designed for the ICP Tempstar Heil Z9MP1075B12B1 furnace and other ICP-family furnaces and air handlers using a 115V-to-24V 40VA control transformer. Verify your primary supply is 115V (not 208/230V) before installing.

Installation Guide

Safety First — Disconnect power at the switch and breaker, then verify zero voltage with a multimeter.
Access — Remove the furnace control/burner compartment panel.
Document — Photo every primary and secondary lead before disconnecting.
Remove — Disconnect the line and 24V leads, then unbolt the old transformer from its bracket.
Install — Mount the new transformer, reconnect primary (line) and secondary (24V) leads exactly per your photo.
Test — Restore power and confirm 24V across the secondary terminals and a normal heat call.

Signs You Need a Replacement

Thermostat is blank or unresponsive
No 24V present at the control board or gas valve
Repeatedly blown low-voltage fuse
Burnt smell or discoloration at 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 40VA Transformer for Z9MP107...

$37.64

Frequently Asked Questions

Does this Transformer fit my ICP Z9MP1075B12B1 — 115V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP Z9MP1075B12B1 — 115V 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 Z9MP1075B12B1 — 115V 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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