What are the specs for this Transformer?

The correct replacement for Carrier model C48A406061 | National HVAC Parts 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 C48A406061 | National HVAC Parts.

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.

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OEM Carrier 40VA 120V to 24V Control Transformer for C48A406061 | National HVAC Parts

Name: OEM Carrier 40VA 120V to 24V Control Transformer for C48A406061 | National HVAC Parts
Brand: Carrier
SKU: CARRIE-C48A406061-TRANSFORMER-HT01BD236
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-C48A406061-TRANSFORMER-HT01BD236 Brand: Carrier

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OEM Carrier Transformer 40VA 120V to 24V for Model C48A406061

This is the factory OEM replacement transformer (part number HT01BD236) for the Carrier C48A406061 packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and control board. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no components will energize. It is often the first part to check when nothing works at all.

Specs: Primary voltage: 120V AC | Secondary voltage: 24V AC | 40VA rating | Class 2 transformer | OEM part number HT01BD236
OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and insulation class, ensuring stable 24V output under full load. Generic transformers frequently undervolt the control circuit, causing erratic board behavior and nuisance lockouts.
Install difficulty: 2/5 — Shut off all power to the unit at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Primary and secondary leads are color-coded for straightforward reinstallation.
Warranty: 1-year OEM factory warranty included. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier C48A406061 packaged unit. Always verify your existing transformer's VA rating and voltage markings on the data plate before ordering to ensure a correct fit. Our HVAC parts specialists are available to confirm fitment before you purchase — reach out before you order and we'll verify compatibility for you.

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 40VA 120V to 24V Con...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier C48A406061 | National HVAC Parts?

Yes. This is the factory-specified OEM transformer for the Carrier C48A406061 | National HVAC Parts. 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 C48A406061 | National HVAC Parts?

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 40VA 120V to 24V Control Transformer for C48A406061 | National HVAC Parts

OEM Carrier Transformer 40VA 120V to 24V for Model C48A406061

Shipping Information

Return Policy

Frequently Asked Questions