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OEM Carrier Transformer 40VA 24V for CH13NA04800GAAAA — HT01AW229
Carrier

OEM Carrier Transformer 40VA 24V for CH13NA04800GAAAA — HT01AW229

SKU: CARRIE-CH13NA04800GAAAA-TRANSFORMER-HT01AW229 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer for Model CH13NA04800GAAAA — Part# HT01AW229

This OEM step-down transformer (part number HT01AW229) is the factory-specified replacement for the Carrier CH13NA04800GAAAA condensing unit. The control transformer converts 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and any safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the contactor won't pull in, and the system produces no response whatsoever. It is one of the first components to check when a system shows zero activity at the thermostat despite power being present at the disconnect.

  • Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Replaces OEM Part# HT01AW229 | Factory-matched impedance and thermal protection
  • OEM vs Generic: This is the genuine Carrier OEM transformer built to factory specifications. Generic transformers frequently use undersized windings that overheat under normal HVAC control loads, leading to premature failure and potential damage to downstream components such as the control board.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Designed and factory-matched for the Carrier CH13NA04800GAAAA condensing unit. Always confirm input voltage and VA rating on your unit's data plate before ordering. If you are unsure about fitment, our HVAC parts specialists are available to verify compatibility before you purchase — 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 CH13NA04800GAAAA — HT01AW229?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA04800GAAAA — HT01AW229. 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 CH13NA04800GAAAA — HT01AW229?
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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