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OEM Carrier Transformer 40VA 120V/24V for CH13NA02400GAAAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for CH13NA02400GAAAA

SKU: CARRIE-CH13NA02400GAAAA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit CH13NA02400GAAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 120V to 24V for Model CH13NA02400GAAAA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier CH13NA02400GAAAA split-system condenser. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, contactor coil, and all low-voltage control circuitry. When this part fails, the entire control circuit goes dead — the thermostat goes blank, the contactor never pulls in, and the system will not respond to any call for cooling. If you've confirmed 120V at the unit but have no 24V at the secondary terminals, this transformer is your likely culprit.

  • Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched construction for direct drop-in fit
  • OEM vs Generic: This OEM unit is wound to Carrier's exact VA and voltage specifications, ensuring reliable 24V output under full control-circuit load. Undersized generic transformers can sag voltage under load, causing erratic contactor behavior and nuisance lockouts.
  • Install difficulty: 2/5 — Shut off power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 0V before touching wiring and to confirm 24V output after install). Photograph existing wiring connections before disconnecting leads.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed and factory-specified for the Carrier CH13NA02400GAAAA split-system condenser. Always verify your existing transformer's primary/secondary voltage and VA rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. Order today and your part ships the same business day.

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 CH13NA02400GAAAA?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA02400GAAAA. 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 CH13NA02400GAAAA?
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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