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OEM Carrier Transformer 40VA 120/24V for CH13NA04200GACAA — HT01AW229
Carrier

OEM Carrier Transformer 40VA 120/24V for CH13NA04200GACAA — HT01AW229

SKU: CARRIE-CH13NA04200GACAA-TRANSFORMER-HT01AW229 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V/24V for Model CH13NA04200GACAA — Part HT01AW229

This OEM step-down control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier CH13NA04200GACAA split-system condenser unit. The transformer converts 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, nothing in the control system responds: the thermostat goes blank, the contactor won't energize, and the system appears completely dead despite power being present at the disconnect.

  • Specs: Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: HT01AW229 | Factory-matched output tolerance for stable low-voltage control operation
  • OEM vs Generic: OEM transformers from Carrier maintain precise 24V output under varying load conditions. Generic alternatives often show voltage sag under full control-circuit load, causing nuisance lockouts, erratic contactor chatter, and premature control board failure.
  • Install difficulty: 2/5 — Shut off power at the disconnect and confirm voltage is absent with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire nuts or spade terminals, multimeter. Label all wiring connections before disconnecting the old unit.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day when ordered before cutoff from our stocked warehouse.

Compatibility: Designed and factory-specified for the Carrier CH13NA04200GACAA split-system condenser. Always verify your existing transformer's primary/secondary voltage and VA rating on the data plate or wiring diagram inside the unit panel before ordering to ensure a confirmed fit. Our fitment team is available to verify compatibility before you purchase — no guesswork required. 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 $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 CH13NA04200GACAA — HT01AW229?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA04200GACAA — 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 CH13NA04200GACAA — 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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