What are the specs for this Transformer?

The correct replacement for Carrier model C50A502752 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number C50A502752.

Is this transformer compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier Transformer 40VA 120V/24V for C50A502752

Name: OEM Carrier Transformer 40VA 120V/24V for C50A502752
Brand: Carrier
SKU: CARRIE-C50A502752-TRANSFORMER-HT01BD236
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-C50A502752-TRANSFORMER-HT01BD236 Brand: Carrier

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OEM Carrier Control Transformer 40VA for Model C50A502752

This is the factory OEM replacement transformer (part number HT01BD236) for the Carrier C50A502752 packaged unit. The control transformer steps down line voltage (120V) to the 24V low-voltage signal required to power your thermostat, control board, contactor coil, and all safety circuit components. When this transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system shows no response, and no heating or cooling operation is possible.

Specs: 40VA rating | Primary: 120V | Secondary: 24V | Factory-matched OEM part number HT01BD236 | Designed for Carrier C50A502752 commercial packaged unit applications
OEM vs Generic: This OEM transformer meets Carrier's exact VA rating, insulation class, and terminal configuration. Generic transformers frequently fall short on VA capacity, causing voltage sag under load that triggers nuisance lockouts and premature control board failure.
Install difficulty: 2/5 — Shut off all power to the unit at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output after install. Always label wires before disconnecting and verify polarity on secondary terminals.
Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier C50A502752 packaged unit. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or existing transformer label before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by to verify compatibility before you order — same-day shipping available on all in-stock OEM parts.

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

OEM Carrier Transformer 40VA 120...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier C50A502752?

Yes. This is the factory-specified OEM transformer for the Carrier C50A502752. 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 C50A502752?

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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OEM Carrier Transformer 40VA 120V/24V for C50A502752

OEM Carrier Control Transformer 40VA for Model C50A502752

Shipping Information

Return Policy

Frequently Asked Questions