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OEM Carrier Transformer 120V–24V 40VA for UPFLOW100FAUHC12B
Carrier

OEM Carrier Transformer 120V–24V 40VA for UPFLOW100FAUHC12B

SKU: CARRIE-UPFLOW100FAUHC12B-TRANSFORMER-HT01CN001 Brand: Carrier
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OEM Carrier Furnace Transformer 120V to 24V 40VA — HT01CN001 for Model UPFLOW100FAUHC12B

The Carrier HT01CN001 is the factory OEM control transformer for the UPFLOW100FAUHC12B upflow furnace. Its job is to step down 120V line voltage to a safe 24V (with a 12V tap) that powers every low-voltage component in the system — your thermostat, gas valve coil, inducer relay, and control board. When this transformer fails, the entire control circuit goes dark: the thermostat display goes blank, the system refuses to fire, and you may detect a faint buzzing or burning smell near the furnace cabinet. Replacing it with the correct OEM unit restores the factory-spec voltage your control board was designed to receive.

  • Specs: 120V primary | 24V / 12V secondary | 40VA rated | Factory Authorized Part — Cross-references HT01BJ115, 19EA41612, 19EA42612, HT01CN001A
  • OEM vs Generic: The OEM HT01CN001 is wound and potted to Carrier's exact VA and impedance tolerances. Off-brand transformers rated at nominally similar specs frequently deliver marginal secondary voltages, causing nuisance lockouts, contactor chatter, and premature control board failures.
  • Install difficulty: 2/5 — Shut off the furnace disconnect and verify zero voltage at the primary terminals before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after installation). Photograph all wiring before disconnecting. Direct plug-and-play replacement — no splicing required on most applications.
  • Warranty: 1-year Carrier OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for the Carrier UPFLOW100FAUHC12B upflow gas furnace. Always verify your unit's data plate voltage and VA requirements before ordering. Our fitment team is available to confirm compatibility before you buy — reach out before placing your order.

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 UPFLOW100FAUHC12B?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW100FAUHC12B. 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 UPFLOW100FAUHC12B?
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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