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OEM Carrier Transformer 40VA 120V/24V for GA2AAD060105ABJA
Carrier

OEM Carrier Transformer 40VA 120V/24V for GA2AAD060105ABJA

SKU: CARRIE-GA2AAD060105ABJA-TRANSFORMER-HT01BC116 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V to 24V for Model GA2AAD060105ABJA

This is the factory OEM replacement transformer (part# HT01BC116) for the Carrier GA2AAD060105ABJA packaged gas/electric unit. The transformer steps down 120V line voltage to the 24V signal needed to power the control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for heating or cooling, and you may measure 0V at the 24V secondary terminals. It is one of the first components to check when nothing in the system responds.

  • Specs: Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01BC116 | Factory-matched primary and secondary winding tolerances
  • OEM vs Generic: OEM transformers are wound and insulated to exact Carrier factory specifications, ensuring stable 24V output under full control-circuit load. Generic alternatives may sag under load, causing erratic board behavior, nuisance lockouts, or premature control board failure.
  • Install difficulty: 2/5 — Shut off power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring connections before disconnecting the old unit.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier GA2AAD060105ABJA packaged unit. Always verify your existing transformer's input voltage, output voltage, and VA rating against your unit's data plate before completing your order. Our fitment team is available to confirm compatibility before you buy — reach out with your model and serial number and we'll verify the match. 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 GA2AAD060105ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier GA2AAD060105ABJA. 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 GA2AAD060105ABJA?
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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