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OEM Carrier Transformer 60VA 115/208/230V→24V for PH12NA036000ABAA
Carrier

OEM Carrier Transformer 60VA 115/208/230V→24V for PH12NA036000ABAA

SKU: CARRIE-PH12NA036000ABAA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit PH12NA036000ABAA — or your money back. Terms

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OEM Carrier Control Transformer 60VA 115/208/230V Primary 24V Secondary — Model PH12NA036000ABAA

This is the genuine OEM foot-mounted control transformer for the Carrier PH12NA036000ABAA packaged heat pump unit, carrying OEM part number HT01AW229. The control transformer is the backbone of your HVAC unit's low-voltage circuit — it steps down line voltage (115, 208, or 230V) to the 24V AC signal that powers your thermostat, contactor coil, control board, and all safety circuits. When this transformer fails, the entire control system goes dark: your thermostat will display nothing, the unit won't respond to calls for heating or cooling, and no contactors or relays will energize. A failed transformer is often misdiagnosed as a bad control board, making correct part identification critical.

  • Specs: 60 VA rating | Primary voltage: 115 / 208 / 230 VAC | Secondary voltage: 24 VAC | Foot-mounted configuration | OEM part number HT01AW229 / HT01AW229A
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM transformers are wound to exact VA and impedance specs, preventing nuisance fuse-blowing and protecting downstream control boards from voltage fluctuation. Generic 60VA transformers frequently run outside rated tolerance, shortening board and contactor life.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire strippers, needle-nose pliers, multimeter (to confirm 0V before touching terminals). Label all wire connections before removal. The foot-mount bracket makes panel installation straightforward.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for Carrier model PH12NA036000ABAA packaged heat pump units. Also cross-references as HT01AW229A. Always verify your unit's data plate voltage matches the primary voltage taps before installing. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — no guesswork.

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 PH12NA036000ABAA?
Yes. This is the factory-specified OEM transformer for the Carrier PH12NA036000ABAA. 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 PH12NA036000ABAA?
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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