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OEM Carrier Transformer 50VA 120/208/240-12/24V — P201-35150
Carrier

OEM Carrier Transformer 50VA 120/208/240-12/24V — P201-35150

SKU: CARRIE-YAC48140YAC103T-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 YAC48140YAC103T

This is the genuine OEM step-down transformer for the Carrier YAC48140YAC103T packaged unit. The transformer converts high-voltage line power (120/208/240 VAC) down to 12/24 VAC to energize the system's low-voltage control circuit — powering the thermostat, control board, contactors, and safety switches. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to calls for cooling or heating, and no contactors will energize. Replacing the transformer is one of the most impactful single-part repairs in packaged HVAC service.

  • Specs: 50 VA | Primary: 120/208/240 VAC multi-tap | Secondary: 12/24 VAC | 60 Hz | Single phase | CSA listed | OEM Part # P201-35150 (also sold as Totaline P201-35150)
  • OEM vs Generic: This is the factory-authorized OEM transformer with tight voltage regulation and thermally protected windings. Generic transformers often use undersized cores and cheaper insulation, leading to premature thermal shutdowns and shortened service life — especially in packaged rooftop applications with high ambient temperatures.
  • Install difficulty: 2/5 — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Label all low-voltage wires before removing. Note primary tap wiring to match your supply voltage (120V or 240V). Torque wire nuts securely and verify 24 VAC output before buttoning up the unit.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the factory-specified replacement for Carrier YAC48140YAC103T packaged HVAC equipment. Verify your unit's supply voltage (120V or 208/240V) against the transformer's primary tap wiring before installation. Cross-reference OEM part number P201-35150 on your unit's data plate or wiring diagram to confirm fitment. Questions about compatibility? Our HVAC parts team verifies fitment before you order — contact us today and ship it out the same day.

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 120/208/240-12/24V — P201-35150?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Transformer 50VA 120/208/240-12/24V — P201-35150. 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 120/208/240-12/24V — P201-35150?
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
HVAC Parts Specialist — Online