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OEM Carrier Transformer 40VA 120V-24V for HP13NR04200GAKAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for HP13NR04200GAKAA

SKU: CARRIE-HP13NR04200GAKAA-TRANSFORMER-HT01AW229 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model HP13NR04200GAKAA

This OEM replacement transformer (part number HT01AW229) is the factory-specified control circuit transformer for the Carrier HP13NR04200GAKAA heat pump system. The transformer steps line voltage down from 120V AC to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dark: the thermostat becomes unresponsive, the system won't energize, and no error codes will display because the board itself has no power.

  • Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched for Carrier HP13NR04200GAKAA heat pump systems
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage specifications, ensuring stable 24V output under full control circuit load. Undersized or off-spec generic units can sag under load, causing intermittent lockouts, nuisance trips, or premature contactor coil failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Label all low-voltage wires before disconnecting, and verify primary/secondary terminal orientation before energizing.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed specifically for the Carrier HP13NR04200GAKAA heat pump. Always confirm the VA rating and primary/secondary voltages on the existing transformer's label before ordering. If you're unsure of fitment, our HVAC parts specialists can verify compatibility before you purchase — same-day shipping available on all in-stock OEM parts.

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 HP13NR04200GAKAA?
Yes. This is the factory-specified OEM transformer for the Carrier HP13NR04200GAKAA. 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 HP13NR04200GAKAA?
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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