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OEM Carrier Transformer 40VA 120V/24V for CH13NA04800GAABA
Carrier

OEM Carrier Transformer 40VA 120V/24V for CH13NA04800GAABA

SKU: CARRIE-CH13NA04800GAABA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit CH13NA04800GAABA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model CH13NA04800GAABA

This OEM replacement control transformer (part number HT01AW229) is the factory-specified unit for the Carrier CH13NA04800GAABA split-system condenser. The transformer steps down 120V line voltage to the 24V signal used by the thermostat, contactor coil, and all low-voltage control circuits. When it fails, the entire control circuit goes dark — the thermostat loses power, the contactor won't energize, and the system sits completely unresponsive even though line voltage is present at the unit.

  • Specs: 40VA rated | Primary: 120V | Secondary: 24V | Factory-matched HT01AW229 OEM part | Hardwired terminal connections
  • OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and insulation class, ensuring the secondary voltage holds steady under full control-circuit load. Undersized generic transformers can sag below 24V, causing intermittent lockouts and contactor chatter that damages downstream components.
  • Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 0V before touching terminals), wire nuts or spade connectors. Photograph existing wiring before disconnecting. Confirm primary reads ~120V and secondary reads ~24V after installation.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Engineered specifically for the Carrier CH13NA04800GAABA 4-ton split-system condenser. Verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate before ordering. Our fitment team is available to confirm compatibility — reach out before you buy if you have any questions.

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 CH13NA04800GAABA?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA04800GAABA. 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 CH13NA04800GAABA?
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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