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OEM Carrier Transformer 50VA 120/240-24V for UPFLOW120FAUHC12
Carrier

OEM Carrier Transformer 50VA 120/240-24V for UPFLOW120FAUHC12

SKU: CARRIE-UPFLOW120FAUHC12-TRANSFORMER-P201-35150 Brand: Carrier
✓ Guaranteed to fit UPFLOW120FAUHC12 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW120FAUHC12

This is the factory OEM replacement control transformer for the Carrier UPFLOW120FAUHC12 upflow gas furnace. The transformer steps down 120/208/240V line voltage to a safe 12/24V output to power the furnace's control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive thermostat, a furnace that won't start, or control board fault codes with no apparent cause. Replacing it with the correct OEM part restores factory-spec voltage regulation and protects downstream electronics from damage.

  • Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz | Single phase | CSA listed | OEM Part # P201-35150
  • OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized transformer. OEM units are wound to exact VA and voltage tolerances, protecting sensitive control boards. Generic transformers may run hot, sag under load, or produce voltage outside spec — shortening the life of your IFC board and thermostat.
  • Install difficulty: 2/5 — Always shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify output voltage after install). Document or photograph existing wiring before disconnecting. Match wire-for-wire on reinstall.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW120FAUHC12 upflow gas furnace. Verify your existing transformer's VA rating and primary/secondary voltages against your unit's data plate before ordering. Need fitment help? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your furnace back online fast.

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 UPFLOW120FAUHC12?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW120FAUHC12. 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 UPFLOW120FAUHC12?
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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