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OEM Carrier Transformer 60VA 115/208/230V–24V for PH12NA018000ACAA
Carrier

OEM Carrier Transformer 60VA 115/208/230V–24V for PH12NA018000ACAA

SKU: CARRIE-PH12NA018000ACAA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit PH12NA018000ACAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 60VA 115/208/230V–24V for Model PH12NA018000ACAA

This is the factory OEM replacement control transformer for the Carrier PH12NA018000ACAA packaged heat pump unit. The transformer steps down line-voltage power (115, 208, or 230V primary) to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the system goes completely unresponsive: no thermostat display response, no contactor pull-in, and no call-for-cooling or heating. A failed transformer is one of the most common reasons an otherwise intact system appears completely dead.

  • Specs: 60VA capacity | Primary voltage: 115 / 208 / 230V AC | Secondary voltage: 24V AC | Foot-mounted configuration | OEM part number: HT01AW229
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part — wound to exact VA and voltage tolerances for the PH12NA018000ACAA. Off-brand transformers rated loosely at 60VA can sag under full control-circuit load, causing erratic operation, nuisance tripping, or premature contactor coil burnout.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output post-install). Label or photograph all low-voltage wiring before disconnecting. Mount feet to existing bracket and reconnect wires per unit wiring diagram.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse — order by 3 PM local time.

Compatibility: Designed for Carrier model PH12NA018000ACAA packaged heat pump units. Always verify your unit's data plate voltage matches the transformer's primary tap before installation. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — contact us anytime.

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 PH12NA018000ACAA?
Yes. This is the factory-specified OEM transformer for the Carrier PH12NA018000ACAA. 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 PH12NA018000ACAA?
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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