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OEM Carrier Transformer 50VA 120/240-24V for UPFLOW100FAU%14
Carrier

OEM Carrier Transformer 50VA 120/240-24V for UPFLOW100FAU%14

SKU: CARRIE-UPFLOW100FAU%14-TRANSFORMER-P201-35150 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 50VA 120/208/240V–12/24V for Model UPFLOW100FAU%14

This OEM step-down transformer (part number P201-35150) is the factory-specified replacement for the Carrier UPFLOW100FAU%14 upflow furnace. The transformer steps incoming line voltage (120/208/240 VAC) down to a safe 12/24 VAC to power the system's control board, thermostat, and all low-voltage circuit components. When the transformer fails, the entire control circuit loses power — symptoms include a completely unresponsive thermostat, a furnace that won't fire at all, or a tripped secondary fuse with no obvious cause elsewhere in the circuit.

  • Specs: 50VA rating | Primary: 120/208/240 VAC multi-tap | Secondary: 12/24 VAC | Single-phase | 60 Hz | CSA listed | Dimensions: 3.8″L × 3.1″W × 2.2″H
  • OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized part. OEM transformers are wound and potted to exact VA and impedance tolerances for the UPFLOW100FAU%14 control board. Off-brand units frequently run undersized VA ratings, causing nuisance fuse trips and premature control board failure.
  • Install difficulty: 3/5 — Always disconnect power at the breaker and verify zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all low-voltage wiring connections before removal. Typical tech time: 20–35 minutes.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for Carrier model UPFLOW100FAU%14 upflow gas furnaces. Cross-references: Totaline P201-35150, HCTY156D0LS11102. Verify your unit's data plate shows a matching primary voltage tap (120/208/240V) before ordering. Our parts team is available to confirm fitment — reach out before you buy if you're unsure.

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 UPFLOW100FAU%14?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW100FAU%14. 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 UPFLOW100FAU%14?
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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