OEM Carrier Furnace Transformer 40VA 120V/24V for Model UPFLOW050U2419A

This is the genuine OEM factory-replacement control transformer for the Carrier UPFLOW050U2419A upflow gas furnace. The transformer steps line voltage (120V) down to the 24V signal used by your thermostat, gas valve, inducer relay, and all low-voltage control components. When this part fails, the entire control circuit goes dark — the furnace will not respond to the thermostat, will not attempt ignition, and may blow a 3A or 5A fuse repeatedly. Replacing the transformer is one of the quickest, most cost-effective repairs in HVAC service.

• Specs: 120V primary | 24V / 12V secondary | 40VA power rating | OEM part number HT01CN001 | Also supersedes HT01CN001A, HT01BJ115, 19EA41612, 19EA42612
• OEM vs Generic: OEM transformers are wound to exact VA and impedance specs. Undersized or off-spec generic units can overheat, nuisance-trip thermal protection, or deliver unstable control voltage — causing erratic ignition behavior and shortened board life.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify 0V with a multimeter before touching any wires. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. The transformer typically mounts on the blower deck or vestibule panel with two screws.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for the Carrier UPFLOW050U2419A upflow gas furnace. Verify input voltage (120V) and VA rating on your unit's data plate before ordering. Cross-references include HT01CN001A, HT01BJ115, 19EA41612, and 19EA42612. Have a question about fitment? Our HVAC parts team will verify compatibility before you order — contact us today and we'll ship your part the same business day.