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

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

SKU: CARRIE-UPFLOW050U2419A-TRANSFORMER-HT01CN001 Brand: Carrier
✓ Guaranteed to fit UPFLOW050U2419A — or your money back. Terms

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Texas CMBL #19328542014
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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.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier UPFLOW050U2419A?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW050U2419A. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the transformer on my Carrier UPFLOW050U2419A?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.
My thermostat has no power. What failed?
Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.
Is this transformer compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier transformer?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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