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OEM Carrier Transformer 40VA 120V to 24V for C48A206052 (HT01BD236) | National HVAC Parts
Carrier

OEM Carrier Transformer 40VA 120V to 24V for C48A206052 (HT01BD236) | National HVAC Parts

SKU: CARRIE-C48A206052-TRANSFORMER-HT01BD236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model C48A206052

This is the OEM factory-replacement control transformer (part number HT01BD236) for the Carrier C48A206052 packaged unit. The transformer steps down line voltage from 120V to the 24V AC signal required to power your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer 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 fault codes will display because the board itself has no power.

  • Specs: Primary: 120V AC | Secondary: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD236 | Factory-matched to Carrier C48A206052 control circuit requirements
  • OEM vs Generic: This OEM transformer is wound to exact factory VA and voltage tolerances. Undersized or off-tolerance generic transformers can cause nuisance trips, erratic thermostat behavior, and premature contactor coil burnout — always use OEM when replacing a failed transformer.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wiring before disconnecting, and verify 24V output with a multimeter after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier C48A206052 packaged unit. Verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. If you are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy. Order today and receive same-day shipping on in-stock 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 $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 C48A206052 (HT01BD236) | National HVAC Parts?
Yes. This is the factory-specified OEM transformer for the Carrier C48A206052 (HT01BD236) | 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 C48A206052 (HT01BD236) | 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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Mike Rivera
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