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OEM Carrier 40VA Transformer 24V Control Circuit — GA2AAD036091ACJA
Carrier

OEM Carrier 40VA Transformer 24V Control Circuit — GA2AAD036091ACJA

SKU: CARRIE-GA2AAD036091ACJA-TRANSFORMER-HT01BC116 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Circuit Transformer for Model GA2AAD036091ACJA

This is the factory OEM replacement transformer (part number HT01BC116) for the Carrier GA2AAD036091ACJA packaged or split-system unit. The transformer steps down line voltage from 120V to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, nothing in the control system responds: the thermostat goes dark, the system won't heat or cool, and no error codes display because the board itself loses power.

  • Specs: Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01BC116 | Factory-matched for Carrier GA2AAD036091ACJA control circuit requirements
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-tolerance generic transformers can cause intermittent lockouts, nuisance tripping, or premature control board failure — costing far more than the savings.
  • Install Difficulty: 2/5 — Disconnect power at the breaker and confirm zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter. Label all wires before removal. The transformer typically mounts to the control panel with two screws and connects via push-on or screw terminals.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier GA2AAD036091ACJA unit. Always verify your existing transformer's input/output voltage and VA rating on the unit's data plate or wiring diagram before ordering to ensure a correct fit. Our parts specialists are available to confirm compatibility before you buy — 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 OEM Carrier 40VA Transformer 24V Control Circuit — GA2AAD036091ACJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier 40VA Transformer 24V Control Circuit — GA2AAD036091ACJA. 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 OEM Carrier 40VA Transformer 24V Control Circuit — GA2AAD036091ACJA?
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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