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OEM Carrier Transformer 50VA 120/240-24V — UPFLOW125UAAC14A
Carrier

OEM Carrier Transformer 50VA 120/240-24V — UPFLOW125UAAC14A

SKU: CARRIE-UPFLOW125UAAC14A-TRANSFORMER-P201-35150 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 50VA 120/208/240-12/24V for Model UPFLOW125UAAC14A

This genuine OEM step-down transformer (part number P201-35150) is the factory-specified replacement for the Carrier UPFLOW125UAAC14A upflow gas furnace. The transformer reduces incoming line voltage to safe low-voltage power for the control board, thermostat, and all 24V control circuit components. When this part fails, the entire control circuit goes dark — symptoms include a completely unresponsive thermostat, a furnace that won't attempt ignition, or a blower motor that runs continuously with no heating cycle.

  • Specs: 50VA rating | Primary voltage: 120/208/240 VAC multi-tap | Secondary voltage: 12/24V | 60 Hz | Single phase | CSA listed | Factory OEM part number P201-35150
  • OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized part — not a universal aftermarket substitute. OEM transformers are wound and insulated to exact VA and voltage tolerances, protecting sensitive control boards from transient voltage spikes that generic units may not suppress.
  • Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wiring connections before disconnecting the old transformer.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for the Carrier UPFLOW125UAAC14A upflow gas furnace. Always verify the part number on your existing transformer's label before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and get same-day shipping.

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 $75
  • 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 Transformer 50VA 120/240-24V — UPFLOW125UAAC14A?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Transformer 50VA 120/240-24V — UPFLOW125UAAC14A. 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 Transformer 50VA 120/240-24V — UPFLOW125UAAC14A?
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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