Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Transformer 40VA 120V/24V for CH13NA04200GACBA
Carrier

OEM Carrier Transformer 40VA 120V/24V for CH13NA04200GACBA

SKU: CARRIE-CH13NA04200GACBA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit CH13NA04200GACBA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Transformer 40VA 120V to 24V for Model CH13NA04200GACBA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier CH13NA04200GACBA split-system air conditioner. The transformer steps down line voltage from 120V to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuits. When this transformer fails, absolutely nothing in the system responds — the thermostat goes blank, the contactor won't pull in, and the unit sits completely dead. It is one of the most overlooked components during diagnostics and one of the most satisfying fixes once identified.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Replaces factory-original unit to exact electrical specification
  • OEM vs Generic: OEM transformers are wound to precise VA and voltage tolerances that protect your control board. Undersized or off-spec generic units can deliver unstable 24V output, causing erratic contactor chatter, nuisance lockouts, or premature board failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 0V before touching terminals and 24V output after install). Take a photo of all low-voltage wire connections before removing the old unit.
  • Warranty: 1-year OEM factory warranty against defects. Orders ship same business day from our climate-controlled warehouse.

Compatibility: Designed and factory-specified for the Carrier CH13NA04200GACBA condensing unit. Always verify the 40VA rating and 120V primary/24V secondary specification on your existing transformer's label before ordering. Our fitment team is available to confirm compatibility before you purchase — just ask.

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 CH13NA04200GACBA?
Yes. This is the factory-specified OEM transformer for the Carrier CH13NA04200GACBA. 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 CH13NA04200GACBA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online