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OEM Carrier Transformer 40VA 120V/24V for C50A204052
Carrier

OEM Carrier Transformer 40VA 120V/24V for C50A204052

SKU: CARRIE-C50A204052-TRANSFORMER-HT01BD236 Brand: Carrier
✓ Guaranteed to fit C50A204052 — or your money back. Terms

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OEM Carrier Transformer 40VA 120V/24V for Model C50A204052

This is the factory OEM replacement transformer (part number HT01BD236) for the Carrier C50A204052 commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this part fails, the entire control circuit goes dark — the thermostat goes blank, the system refuses to start, and no error codes are generated because the board itself has no power. If you've already confirmed your 120V supply is intact and your thermostat is functional, a failed transformer is the next component to test.

  • Specs: 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched for Carrier C50A204052 commercial packaged equipment
  • OEM vs Generic: The OEM HT01BD236 transformer is wound to exact VA and voltage tolerances required by the Carrier C50A204052 control circuit. Generic replacements often run undersized VA ratings that overheat under full control-circuit load, shortening service life significantly.
  • Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Label or photograph all low-voltage wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier C50A204052 commercial packaged unit. Always verify your existing transformer's VA rating and primary/secondary voltages against your unit's data plate before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork required.

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 $99
  • 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 C50A204052?
Yes. This is the factory-specified OEM transformer for the Carrier C50A204052. 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 C50A204052?
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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