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OEM Carrier Transformer 40VA 208/240V–24V for PY3GNAA36060NA
Carrier

OEM Carrier Transformer 40VA 208/240V–24V for PY3GNAA36060NA

SKU: CARRIE-PY3GNAA36060NA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3GNAA36060NA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01BD209 for Model PY3GNAA36060NA

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3GNAA36060NA packaged HVAC unit. The transformer steps down line voltage from 208/240V 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 result is typically a completely unresponsive system — no call for heat or cool, no contactor pull-in, no display activity — because the entire 24V control circuit loses power.

  • Specs: 208/240V primary | 24V secondary | 40VA power rating | 50/60Hz compatible | Factory-matched OEM tolerances
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage specifications. Undersized or off-tolerance aftermarket units can overheat, trip internal thermal protection, or cause erratic low-voltage behavior and nuisance lockouts.
  • Install difficulty: 2/5 — Always disconnect power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wiring connections before removal. Verify 24V output with a multimeter after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNAA36060NA packaged unit. Cross-reference OEM part number HT01BD209 against your unit's wiring diagram and data plate to confirm 208/240V primary and 24V/40VA secondary specifications before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence and get your system back online fast.

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 PY3GNAA36060NA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3GNAA36060NA. 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 PY3GNAA36060NA?
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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