What are the specs for this Transformer?

The correct replacement for Carrier model C50A305062 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 C50A305062.

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 C50A305062

Name: OEM Carrier Transformer 40VA 120V-24V for C50A305062
Brand: Carrier
SKU: CARRIE-C50A305062-TRANSFORMER-HT01BD236
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-C50A305062-TRANSFORMER-HT01BD236 Brand: Carrier

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OEM Carrier 40VA Control Transformer for Model C50A305062

This is the factory OEM replacement transformer for the Carrier C50A305062 commercial packaged unit, supplied under part numbers HT01BD236 and HT01BD702. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, and all control-circuit components. When this transformer fails — due to a short, overload, or winding burnout — the entire control circuit goes dead: the thermostat goes blank, the contactor won't pull in, and the system produces no heating or cooling response whatsoever. Replacing with an OEM-matched unit restores precise voltage output and protects downstream controls from under- or over-voltage damage.

Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched impedance and VA capacity for Carrier C50A305062 control boards
OEM vs Generic: OEM transformers (HT01BD236 / HT01BD702) are wound to exact Carrier tolerances, ensuring stable 24V output under full control-circuit load. Generic units often run outside ±5% voltage tolerance, risking nuisance lockouts or premature contactor coil failure.
Install difficulty: 2/5 — Always shut off power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output at secondary terminals after installation before restoring full power.
Warranty: 1-year OEM factory warranty. Stocked in our warehouse and ships the same business day when ordered before cutoff.

Compatibility: Designed for the Carrier C50A305062 commercial rooftop/packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Confirm primary voltage (120V) and VA rating (40VA) on your unit's data plate before ordering. Our parts specialists are available to verify fitment — order with confidence 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

OEM Carrier Transformer 40VA 120...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier C50A305062?

Yes. This is the factory-specified OEM transformer for the Carrier C50A305062. 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 C50A305062?

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 C50A305062

OEM Carrier 40VA Control Transformer for Model C50A305062

Shipping Information

Return Policy

Frequently Asked Questions