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This OEM control transformer (part number 1172028) steps the incoming 208/230V line voltage down to the 24V control voltage that your ICP WAXT364A1 system uses to power thermostats, contactors, relays, and the control board. Rated at 40VA, it supplies enough capacity to drive the full low-voltage control circuit. When a transformer fails — often from a shorted control wire, a stuck contactor coil, or simple age-related winding breakdown — the entire system goes dead even though high-voltage power is present. A blown transformer is one of the most common no-cool/no-heat call causes, and replacing it restores 24V control power instantly.
| Spec | Value |
|---|---|
| Part Number | 1172028 |
| Type | Control Transformer |
| Brand | ICP / Tempstar / Heil |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40VA |
| Fit | OEM Replacement |
Directly fits the ICP/Tempstar/Heil WAXT364A1 and other systems in the WAXT family that specify the 1172028 transformer. Always confirm your existing transformer is a 208/230V-to-24V 40VA unit before replacing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.