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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3GNAA24060NA
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3GNAA24060NA

SKU: CARRIE-PY3GNAA24060NA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3GNAA24060NA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 208/230V to 24V for Model PY3GNAA24060NA

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3GNAA24060NA packaged unit. The transformer steps down line-voltage power (208/230V) to the 24V low-voltage signal that drives your thermostat, control board, and all safety circuits. When this part fails, the entire control circuit goes dark — the thermostat loses power, relays won't energize, and the system produces no heating or cooling response whatsoever.

  • Specs: 40VA capacity | 208/230V primary input | 24V secondary output | 50/60Hz | Class 2 control transformer | Foot-mount configuration
  • OEM vs Generic: This is a genuine Carrier OEM part — factory-matched to exact VA rating and winding tolerances. Undersized or off-spec generic transformers can overheat, trip thermal cutoffs prematurely, or fail to supply adequate current to modern multi-stage control boards.
  • Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before removing the old transformer. Verify 24V output with a meter after installation before restoring power to controls.
  • Warranty & Shipping: 1-year OEM factory warranty. In stock — ships same business day from our warehouse. Also replaces legacy Carrier part numbers HT01BD207, HT01CN232, and 9076-00.

Compatibility: Direct OEM replacement for Carrier model PY3GNAA24060NA packaged units. Verify your unit's data plate confirms a 208/230V primary control circuit before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us 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

Frequently Asked Questions

Does this Transformer fit my Carrier PY3GNAA24060NA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3GNAA24060NA. 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 PY3GNAA24060NA?
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
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