What are the specs for this Transformer?

The correct replacement for Carrier model PY3GNA060090NB 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 PY3GNA060090NB.

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 PY3GNA060090NB

Name: OEM Carrier Transformer 40VA 208/240V–24V for PY3GNA060090NB
Brand: Carrier
SKU: CARRIE-PY3GNA060090NB-TRANSFORMER-HT01BD209
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PY3GNA060090NB-TRANSFORMER-HT01BD209 Brand: Carrier

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OEM Carrier Control Transformer 40VA 208/240V to 24V for Model PY3GNA060090NB

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3GNA060090NB packaged gas/electric unit. The transformer steps down high-voltage line power (208/240V primary) to the 24V control-circuit voltage that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When this transformer fails, the result is total loss of control — a blank thermostat display, no response to any call for heating or cooling, and a system that will not start regardless of settings.

Specs: 40VA capacity | 208/240V primary input | 24V secondary output | 50/60Hz compatible | Replaces OEM part numbers HT01BD207, HT01CN232, and 9076-00
OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers can drift outside rated output under load, causing nuisance lockouts, erratic control board behavior, and premature component failure across the entire low-voltage circuit.
Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always photograph or label all wire terminals before disconnecting the old transformer.
Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY3GNA060090NB. This transformer is also a direct drop-in for systems currently running legacy part numbers HT01BD207 or HT01CN232. Verify your unit's line voltage (208V or 240V) matches the primary rating before installation. Have a question about fitment? Our HVAC parts specialists verify compatibility before you order — call or chat today.

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 Transformer 40VA 208...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PY3GNA060090NB?

Yes. This is the factory-specified OEM transformer for the Carrier PY3GNA060090NB. 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 PY3GNA060090NB?

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 PY3GNA060090NB

OEM Carrier Control Transformer 40VA 208/240V to 24V for Model PY3GNA060090NB

Shipping Information

Return Policy

Frequently Asked Questions