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OEM Carrier Furnace Transformer 120V–24V 40VA — UPFLOW080U36M19A
Carrier

OEM Carrier Furnace Transformer 120V–24V 40VA — UPFLOW080U36M19A

SKU: CARRIE-UPFLOW080U36M19A-TRANSFORMER-HT01CN001 Brand: Carrier
✓ Guaranteed to fit UPFLOW080U36M19A — or your money back. Terms

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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.

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 OEM Carrier Furnace Transformer 120V–24V 40VA — UPFLOW080U36M19A?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 120V–24V 40VA — UPFLOW080U36M19A. 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 OEM Carrier Furnace Transformer 120V–24V 40VA — UPFLOW080U36M19A?
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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