OEM Carrier Furnace Transformer 120V to 24V 40VA for Model UPFLOW080U36M19A

This factory OEM transformer (part #HT01CN001) is the direct replacement for the Carrier UPFLOW080U36M19A gas furnace. The transformer is the heart of your furnace's control circuit — it steps down 120V line voltage to a safe 24V signal used by the thermostat, gas valve, inducer relay, and all low-voltage controls. When it fails, the entire control circuit goes dark: your thermostat loses power, nothing responds to a call for heat, and you may detect a faint burning smell or notice the transformer buzzing or humming under load.

• Specs: 120V primary | 24V/12V dual secondary | 40VA rated | Factory-matched Carrier OEM specification | Replaces legacy part numbers HT01BJ115, 19EA41612, and 19EA42612
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket equivalent. Generic transformers frequently deviate from rated VA capacity, leading to overheating, nuisance trips, or premature failure of downstream control boards and gas valves. OEM ensures exact VA output and winding insulation grade.
• Install difficulty: 3/5 — Shut off power at the breaker before beginning. Tools needed: multimeter (verify 0V at transformer terminals before touching wiring), flat-head and Phillips screwdrivers, needle-nose pliers. Label all low-voltage wires before disconnecting. Verify the new transformer reads ~24VAC at the secondary with power restored before reassembling the panel. If the new transformer blows immediately, inspect control wiring for a short before re-powering.
• Warranty: 1-year Carrier OEM factory warranty. In stock — ships same business day from our warehouse. Free shipping on orders over $99.

Compatibility: Designed for the Carrier UPFLOW080U36M19A upflow gas furnace. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guessing required.