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

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

SKU: CARRIE-YAC36100YAC107AC-TRANSFORMER-P201-35150 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 50VA Control Transformer P201-35150 for Model YAC36100YAC107AC

This OEM step-down control transformer is the factory-specified replacement for the Carrier YAC36100YAC107AC and is sold under Carrier's Totaline / Factory Authorized Parts line (part number P201-35150). The transformer converts high-voltage line power — 120/208/240 VAC — down to a safe 12/24 VAC output to energize your system's control board, thermostat, and all low-voltage control circuits. When a transformer fails, the entire control circuit loses power: the thermostat goes blank, contactors won't pull in, and the system will not respond to any call for heating or cooling. A failed transformer is often caused by a short in the secondary (24V) circuit — always inspect low-voltage wiring for shorts before installing the replacement.

  • Specs: 50 VA rating | Primary: 120/208/240 VAC multi-tap | Secondary: 12/24 VAC | 60 Hz single-phase | CSA listed | Dimensions: 3.8″L × 3.1″W × 2.2″H
  • OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized part, matched exactly to the VA rating and voltage taps required by the YAC36100YAC107AC. Generic transformers with mismatched VA ratings can overheat, trip thermal cutouts, or damage connected control boards.
  • Install difficulty: 3/5 — Shut off all power at the disconnect and breaker before proceeding. Tools needed: multimeter (check for secondary shorts first), flathead and Phillips screwdrivers, wire strippers, needle-nose pliers. Label all wires before disconnecting the old unit. Verify secondary voltage output after installation before closing the cabinet.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse — order by 3 PM local time.

Compatibility: Designed for the Carrier YAC36100YAC107AC unit. Cross-references: Totaline P201-35150, OEM cross HCTY156D0LS11102. Verify your unit's data plate confirms a 50VA, 120/208/240-12/24V transformer requirement before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork.

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