What are the specs for this Transformer?

The correct replacement for Carrier model 09DE054600 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 09DE054600.

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 Control Transformer 40VA 230V/115V for 09DE054600

Name: OEM Carrier Control Transformer 40VA 230V/115V for 09DE054600
Brand: Carrier
SKU: CARRIE-09DE054600-TRANSFORMER-HT01BC208
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-09DE054600-TRANSFORMER-HT01BC208 Brand: Carrier

✓ Guaranteed to fit 09DE054600 — or your money back. Terms

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OEM Carrier Control Transformer 40VA 230V/115V for Model 09DE054600

This OEM Carrier control transformer (part number HT01BC208) is the factory-specified replacement for the Carrier 09DE054600. The transformer steps down the unit's line voltage to the control circuit voltage required to power the thermostat, control board, and low-voltage accessories. When this transformer fails, you'll typically see a completely unresponsive system — no thermostat display, no blower activation, and no response to any thermostat input. A failed transformer is often the result of a short in the low-voltage wiring or an overloaded secondary circuit.

Specs: 40VA rating | 230V primary voltage | 115V secondary voltage | Totaline OEM factory part | Cross-references: 320659-301, 2-05757-1
OEM vs Generic: This is a genuine Carrier Totaline OEM transformer, wound to exact factory VA and voltage specifications. Aftermarket units frequently fall short of rated VA capacity, causing nuisance trips and premature failure under normal HVAC load.
Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify output voltage post-install). Photograph all wiring connections before removal.
Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier 09DE054600. Always verify transformer VA rating and primary/secondary voltages against your unit's wiring diagram or data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.

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 Control Transformer ...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier 09DE054600?

Yes. This is the factory-specified OEM transformer for the Carrier 09DE054600. 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 09DE054600?

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 Control Transformer 40VA 230V/115V for 09DE054600

OEM Carrier Control Transformer 40VA 230V/115V for Model 09DE054600

Shipping Information

Return Policy

Frequently Asked Questions