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OEM Carrier Transformer 40VA 120V/24V for CH13NA02400GAABA
Carrier

OEM Carrier Transformer 40VA 120V/24V for CH13NA02400GAABA

SKU: CARRIE-CH13NA02400GAABA-TRANSFORMER-HT01AW229 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 40VA 120V/24V for Model CH13NA02400GAABA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier CH13NA02400GAABA split-system condenser. The transformer steps down 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and any safety switches. When it fails, the result is typically a completely unresponsive system: the thermostat goes blank, the contactor never pulls in, and no cooling occurs despite the disconnect being live.

  • Specs: Input 120V AC | Output 24V AC | 40VA rated | Foot-mount configuration | OEM part number HT01AW229 | Factory-matched for Carrier CH13NA02400GAABA
  • OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact VA and thermal specifications. Undersized or off-tolerance generic units can overheat under peak low-voltage load, tripping the internal thermal fuse and causing intermittent failures that are difficult to diagnose.
  • Install difficulty: 2/5 — Disconnect all power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before removing the old transformer. Secure wire nuts firmly after installation.
  • Warranty: 1-year OEM factory warranty. Orders placed by 3 PM local time ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier CH13NA02400GAABA split-system condenser. Verify your unit's control circuit voltage and VA requirement on the data plate before ordering. If you have multiple model variants or are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork required.

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 CH13NA02400GAABA?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA02400GAABA. 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 CH13NA02400GAABA?
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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