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

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

SKU: CARRIE-YAC48110YAC104AC-TRANSFORMER-P201-35150 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Circuit Transformer 50VA 120/208/240V–24V for Model YAC48110YAC104AC

This OEM Carrier transformer (part number P201-35150) is the factory-specified step-down transformer for the Carrier YAC48110YAC104AC packaged HVAC unit. Its job is critical: it steps high-voltage line power (120, 208, or 240 VAC) down to a safe 24V AC signal that powers the control board, thermostat circuit, and all low-voltage switching logic. When this transformer fails, the entire control circuit goes dead — the system will not respond to thermostat calls, contactors won't energize, and in many cases the unit appears completely inoperative with no error codes displayed.

  • Specs: 50VA rating | Primary voltage: 120/208/240 VAC multi-tap | Secondary voltage: 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 part with tight VA tolerance and CSA certification. Off-brand replacements often use undersized core materials that overheat under full HVAC control load, leading to premature failure and potential damage to connected boards.
  • Install difficulty: 3/5 — Line-voltage wiring is involved. Always shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Photograph all wiring connections before disconnecting. Confirm primary tap matches your supply voltage before energizing.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Factory-matched replacement for Carrier model YAC48110YAC104AC. This multi-tap transformer supports 120, 208, and 240V primary supply configurations, making it suitable across a range of Carrier packaged and commercial HVAC applications. Verify your unit's supply voltage and VA draw on the equipment data plate before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back online fast.

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