What are the specs for this Transformer?

The correct replacement for Carrier model SUBCLR50HJ402464 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 SUBCLR50HJ402464.

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 208/240V–24V for SUBCLR50HJ402464

Name: OEM Carrier Transformer 40VA 208/240V–24V for SUBCLR50HJ402464
Brand: Carrier
SKU: CARRIE-SUBCLR50HJ402464-TRANSFORMER-HT01BD209
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-SUBCLR50HJ402464-TRANSFORMER-HT01BD209 Brand: Carrier

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OEM Carrier Control Transformer 40VA 208/240V to 24V — HT01BD209 for Model SUBCLR50HJ402464

This OEM Carrier control transformer (part# HT01BD209) is the factory-specified replacement for the Carrier SUBCLR50HJ402464 HVAC system. The transformer steps down the 208/240V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When this part fails, the entire control circuit goes dark — symptoms include a completely blank thermostat display, no response to any call for heat or cooling, and a system that won't energize even when the breaker is confirmed good. If the system is completely unresponsive and line voltage is present at the unit, a failed transformer is one of the first components to test.

Specs: 40VA rating | Primary: 208/240V | Secondary: 24V | 50/60Hz dual-frequency | OEM part# HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00
OEM vs Generic: This is a genuine Carrier OEM transformer, manufactured to exact factory VA and voltage tolerances. Undersized or off-tolerance aftermarket transformers can trip thermal overloads, cause nuisance lockouts, or damage the control board — OEM ensures plug-and-play reliability.
Install difficulty: 2/5 — Turn off power at the breaker AND the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 0V before touching wires). Photograph existing wire routing before disconnecting. Mount style and wire leads match the OEM unit for a direct swap.
Warranty: 1-year OEM factory warranty included. Ships same business day from our warehouse — order by 3PM local time for same-day dispatch.

Compatibility: Designed for the Carrier SUBCLR50HJ402464 HVAC system. Verify your unit's data plate matches a 208/240V primary, 24V secondary, 40VA requirement before ordering. Cross-references: HT01BD207, HT01CN232, 9076-00. Not sure it's the right part? Contact our fitment team before you order — we verify compatibility at no charge.

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 208...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier SUBCLR50HJ402464?

Yes. This is the factory-specified OEM transformer for the Carrier SUBCLR50HJ402464. 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 SUBCLR50HJ402464?

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 208/240V–24V for SUBCLR50HJ402464

OEM Carrier Control Transformer 40VA 208/240V to 24V — HT01BD209 for Model SUBCLR50HJ402464

Shipping Information

Return Policy

Frequently Asked Questions