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OEM Carrier Transformer 40VA 120V→24V for PH13NR04800GAEAA
Carrier

OEM Carrier Transformer 40VA 120V→24V for PH13NR04800GAEAA

SKU: CARRIE-PH13NR04800GAEAA-TRANSFORMER-HT01AW229 Brand: Carrier

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier 40VA Control Transformer HT01AW229 for Model PH13NR04800GAEAA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH13NR04800GAEAA heat pump system. The transformer steps down 120V line voltage to 24V AC, powering the low-voltage control circuit that operates the thermostat, contactor coil, and all safety controls. When it fails, the entire control system goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no contactors or relays energize. A failed transformer is often misdiagnosed as a thermostat or control board problem, making correct identification critical.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Compact chassis-mount design | Factory-matched impedance and thermal protection
  • OEM vs Generic: The OEM HT01AW229 transformer is wound and rated to exact Carrier factory specifications, ensuring correct VA capacity and thermal cutout settings. Generic transformers often carry undersized VA ratings that trip under normal load, causing nuisance lockouts and premature failure.
  • Install Difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire stripper. Always label or photograph existing wiring before disconnecting. The transformer mounts to the cabinet and connects to the control board low-voltage terminals.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PH13NR04800GAEAA heat pump. Verify primary voltage (120V) on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — order with confidence.

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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days
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