ICP Transformer for X8MPT075F14A2 — 40VA 115V to 24V | Ships Today

Overview

This is a genuine OEM 40VA control transformer (part #1012722) for the ICP X8MPT075F14A2 gas furnace. The transformer is the heart of your furnace's low-voltage control circuit: it steps the incoming 115V line voltage down to the 24V needed to power the thermostat, gas valve, igniter control, relays, and contactor coils. When this transformer fails, the entire control system goes dark — the furnace will not respond to a thermostat call, the display goes blank, and no sequence of operation begins. A 40VA rating provides enough capacity to drive the gas valve and accessory loads simultaneously. Common failure causes include a shorted gas valve coil, a pinched control wire, or a power surge that overloads the secondary winding and blows the internal fuse link.

Specifications

Compatibility

Engineered as the factory replacement for the ICP / Tempstar / Heil X8MPT075F14A2 furnace and shared across many ICP-family 115V-to-24V control platforms that use a 40VA transformer. Always confirm the primary voltage and VA rating against the part you are replacing before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage at the transformer terminals with a multimeter.
2. Access — Remove the furnace blower/control compartment service panel.
3. Document — Photograph all primary (line) and secondary (24V) wire connections before disconnecting anything.
4. Remove — Label and disconnect the leads, then unbolt the failed transformer from the control panel.
5. Install — Mount the new transformer, reconnect the 115V primary and 24V secondary leads exactly per your photo.
6. Test — Restore power, confirm 24V across the secondary, and run a full heat call to verify operation.

Signs You Need a Replacement

• Blank control board / no thermostat response — furnace completely dead.
• No 24V reading across the secondary terminals.
• Repeated blown low-voltage fuses or a burnt smell at the transformer.
• Buzzing, overheating, or visibly scorched windings.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free returns. Backed by the National HVAC Parts fitment guarantee.