ICP Transformer for X8MPT075F14A1 — 40VA 115V to 24V | Ships Today

Overview

This is a genuine OEM 40VA control transformer (part #1012722) for the ICP X8MPT075F14A1 gas furnace. The transformer powers the entire low-voltage control circuit by stepping incoming 115V line voltage down to the 24V required by the thermostat, gas valve, igniter control board, relays, and blower controls. If this transformer fails, the furnace goes completely unresponsive — the thermostat call does nothing, the control board shows no power, and no ignition sequence starts. The 40VA rating supplies enough capacity to energize the gas valve and accessory loads at the same time without overload. Typical failures stem from a shorted gas valve coil, a pinched or grounded control wire, or a voltage surge that blows the transformer's internal fuse link.

Specifications

Compatibility

Factory replacement for the ICP / Tempstar / Heil X8MPT075F14A1 gas furnace and shared across many ICP-family 115V-to-24V control platforms using a 40VA transformer. Always confirm primary voltage and VA rating against the original 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 (115V) and secondary (24V) wire connections before disconnecting.
4. Remove — Label and disconnect the leads, then unbolt the failed transformer from the control panel.
5. Install — Mount the new transformer and reconnect the primary and 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.