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OEM Carrier Transformer 50VA 120/240V–24V for UPFLOW100UAAC14
Carrier

OEM Carrier Transformer 50VA 120/240V–24V for UPFLOW100UAAC14

SKU: CARRIE-UPFLOW100UAAC14-TRANSFORMER-P201-35150 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 50VA Control Transformer (P201-35150) for Model UPFLOW100UAAC14

This OEM step-down transformer is the factory-specified replacement for the Carrier UPFLOW100UAAC14 air handler. Its job is critical: it converts incoming line voltage (120/208/240 VAC) down to safe 12/24 VAC to power the system's control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dark — you'll see a blank thermostat, no response to heat or cool calls, and potentially tripped secondary fuses. Replacing it with the correct OEM part restores factory-rated power delivery and protects your downstream components from voltage irregularities that generic units can introduce.

  • Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz | Single phase | CSA listed | Part # P201-35150
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier UPFLOW100UAAC14 control board. Undersized or out-of-tolerance generic units can cause nuisance tripping, control board damage, or premature transformer burnout.
  • Install difficulty: 2/5 — Shut off power at the breaker and verify zero voltage before disconnecting. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or terminal connectors. Label all low-voltage wires before removal. Always verify secondary output voltage (24V) after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW100UAAC14 air handler. Verify your unit's data plate primary voltage configuration (120V or 240V) before ordering to ensure correct tap selection. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — ships today.

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 UPFLOW100UAAC14?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW100UAAC14. 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 UPFLOW100UAAC14?
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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