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OEM Carrier Transformer 40VA 120V/24V for HP13NR03000GAKAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for HP13NR03000GAKAA

SKU: CARRIE-HP13NR03000GAKAA-TRANSFORMER-HT01AW229 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V/24V for Model HP13NR03000GAKAA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier HP13NR03000GAKAA heat pump system. The transformer steps down line voltage (120V) to the 24V signal voltage required to power the control board, thermostat, and all low-voltage control circuits. When this component fails, the entire control circuit goes dead — the thermostat shows no response, the system won't call for heating or cooling, and in some cases a blown fuse or tripped secondary may be the only visible symptom.

  • Specs: 40VA rating | 120V primary / 24V secondary | Class 2 output | OEM part number HT01AW229 | Direct drop-in replacement for factory-installed unit
  • OEM vs Generic: The OEM HT01AW229 transformer is wound and insulated to Carrier's exact specifications, ensuring stable 24V output under variable load. Generic transformers often under-deliver VA capacity, causing nuisance tripping, control board brownouts, and premature contactor failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker before any work. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connect terminals. Verify secondary voltage (should read ~24–28V AC) after installation before restoring thermostat wiring.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier HP13NR03000GAKAA heat pump. Always verify your existing transformer's VA rating and primary/secondary voltages against your unit's data plate before ordering. If you're unsure of fitment, our parts specialists can confirm compatibility before you buy — same-day shipping on all in-stock orders.

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

Frequently Asked Questions

Does this Transformer fit my Carrier HP13NR03000GAKAA?
Yes. This is the factory-specified OEM transformer for the Carrier HP13NR03000GAKAA. 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 HP13NR03000GAKAA?
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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