What are the specs for this Transformer?

The correct replacement for Carrier model PY3GNA024060NA 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 PY3GNA024060NA.

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 40VA Control Transformer 24V for PY3GNA024060NA

Name: OEM Carrier 40VA Control Transformer 24V for PY3GNA024060NA
Brand: Carrier
SKU: CARRIE-PY3GNA024060NA-TRANSFORMER-HT01BD209
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PY3GNA024060NA-TRANSFORMER-HT01BD209 Brand: Carrier

✓ Guaranteed to fit PY3GNA024060NA — or your money back. Terms

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OEM Carrier 40VA Control Transformer for Model PY3GNA024060NA

The Carrier HT01BD209 is the factory-specified step-down control transformer for the PY3GNA024060NA packaged unit. It converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, gas valve, and control board. When this transformer fails, the entire system goes dark: the thermostat loses power, no heating or cooling calls are processed, and the unit will not respond at all. A blown transformer is often the result of a shorted downstream component, so inspect the control circuit for faults before installing the replacement.

Specs: 120V primary | 24V secondary output | 40VA rating | Factory OEM part number HT01BD209 | Direct plug-in wiring harness connector
OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage specifications. Generic aftermarket units frequently underperform their rated VA, causing nuisance trips, overheating, and premature control board failure — especially under full heating load.
Install Difficulty: 2/5 — Shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always identify and correct any downstream short before energizing the new transformer.
Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PY3GNA024060NA packaged unit. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — reach out before placing your order.

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 40VA Control Transfo...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PY3GNA024060NA?

Yes. This is the factory-specified OEM transformer for the Carrier PY3GNA024060NA. 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 PY3GNA024060NA?

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 40VA Control Transformer 24V for PY3GNA024060NA

OEM Carrier 40VA Control Transformer for Model PY3GNA024060NA

Shipping Information

Return Policy

Frequently Asked Questions