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OEM Carrier Transformer 40VA 230V/115V for Model 09DE054C600
Carrier

OEM Carrier Transformer 40VA 230V/115V for Model 09DE054C600

SKU: CARRIE-09DE054C600-TRANSFORMER-HT01BC208 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 230V/115V for Model 09DE054C600

This is the factory OEM replacement transformer for the Carrier 09DE054C600, carrying OEM part number HT01BC208. The control transformer is the backbone of your HVAC system's low-voltage circuit — it steps down the incoming line voltage to the safe 24V signal that powers your thermostat, contactor coil, control board, and all safety switches. When this transformer fails, the entire control circuit goes dark: your thermostat loses power, the system will not respond to any call for heating or cooling, and nothing works. No hum, no click, no startup — complete silence from the unit.

  • Specs: 40VA rated | 230V primary voltage | 115V secondary voltage | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1
  • OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage specifications. Undersized or off-tolerance aftermarket transformers can overheat, trip the thermal fuse, and fail prematurely — or take out downstream components with them.
  • Install difficulty: 3/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: multimeter (to confirm 0V before touching wires), flathead and Phillips screwdrivers, wire stripper, and electrical tape or wire nuts. Always label and photograph all wire connections before removal. Verify primary and secondary voltage with a meter before restoring power.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the factory-specified replacement for Carrier model 09DE054C600. Verify the primary and secondary voltages on your unit's data plate match 230V/115V before ordering. Not sure if this is your part? Our team confirms fitment before you buy — just reach out. Order now and get same-day shipping on all 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 Model 09DE054C600?
Yes. This is the factory-specified OEM transformer for the Carrier Model 09DE054C600. 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 Model 09DE054C600?
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
HVAC Parts Specialist — Online