OEM Carrier Control Transformer 120V to 24V 40VA for Model U19X175U60B — Part HT01CN001

This is the genuine OEM factory-replacement control transformer for the Carrier U19X175U60B, sourced directly from Carrier's Replacement Components Division. The transformer steps down 120V line voltage to a 24V (and 12V) secondary output, powering the low-voltage control circuit that connects your thermostat, control board, and all system safeties. When this transformer fails — due to a voltage surge, a short in the control wiring, or normal wear — the entire control circuit goes dead: the thermostat loses power, the system won't respond to commands, and you may detect a faint burning smell or buzzing near the unit.

• Specs: Primary voltage: 120V | Secondary voltage: 24V / 12V | Capacity: 40VA | Factory part number: HT01CN001 | Replaces legacy part numbers HT01BJ115, 19EA41612, 19EA42612
• OEM vs Generic: This is the factory-specified OEM unit — wound to exact VA capacity and voltage tolerances required by the Carrier U19X175U60B control board. Generic transformers rated at nominal 40VA often run under-capacity, causing nuisance lockouts and premature control board failures.
• Install difficulty: 3/5 — Shut off power at the disconnect and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire labels or tape. Photograph all low-voltage wiring before disconnecting. Torque all screw terminals firmly — loose connections are the #1 cause of repeat transformer failure.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier U19X175U60B and related ICP-platform equipment sharing this transformer specification. Always verify your unit's data plate voltage and VA requirements before ordering. Our team is available to confirm fitment — contact us before you buy if you have any questions.