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OEM Carrier Transformer 120V/24V 40VA for PH13NR018000AAAA
Carrier

OEM Carrier Transformer 120V/24V 40VA for PH13NR018000AAAA

SKU: CARRIE-PH13NR018000AAAA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit PH13NR018000AAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 120V to 24V 40VA for Model PH13NR018000AAAA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier PH13NR018000AAAA heat pump. The transformer steps down line voltage (120V) to the 24V low-voltage control circuit that powers your thermostat, contactor coil, and control board. When this part fails, the entire control system goes dead — the thermostat goes blank, the system won't respond to calls for heating or cooling, and no 24V devices operate at all.

  • Specs: Primary voltage: 120V | Secondary voltage: 24V | VA rating: 40VA | OEM part number: HT01AW229 | Factory-matched to Carrier PH13NR018000AAAA low-voltage control circuit requirements
  • OEM vs Generic: This is the genuine OEM Carrier transformer, wound and rated to exact factory specifications. Generic transformers often carry loose VA tolerances and lower-grade core materials, risking voltage sag under full control-circuit load and premature failure.
  • Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wiring connections before removal. Verify 24V output with a multimeter before reassembling the panel.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before the daily cutoff.

Compatibility: Designed specifically for the Carrier PH13NR018000AAAA heat pump. Always verify your unit's data plate voltage and VA requirements match before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions. Order now and your part ships 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 PH13NR018000AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PH13NR018000AAAA. 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 PH13NR018000AAAA?
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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