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OEM Carrier Transformer 40VA 120V/24V for GB1AAV036065ADJA
Carrier

OEM Carrier Transformer 40VA 120V/24V for GB1AAV036065ADJA

SKU: CARRIE-GB1AAV036065ADJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit GB1AAV036065ADJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 40VA 120V/24V for Model GB1AAV036065ADJA

This OEM replacement control transformer (part number HT01BC116) is the factory-specified unit for the Carrier GB1AAV036065ADJA gas furnace. The transformer steps down 120V line voltage to 24V AC to power the entire control circuit — including the thermostat, gas valve, contactor coils, and the integrated furnace control board. When the transformer fails, nothing in the low-voltage control circuit responds: the thermostat goes dark, the furnace won't call for heat, and the system appears completely dead despite power being present at the unit.

  • Specs: 40VA rated | 120V primary / 24V secondary | Factory OEM part number HT01BC116 | Matches original mounting footprint and terminal configuration for drop-in replacement
  • OEM vs Generic: The OEM Carrier transformer is wound to exact VA and voltage tolerances required by the GB1AAV036065ADJA control board. Undersized or off-tolerance generic transformers can sag under full control-circuit load, causing erratic ignition sequences, nuisance lockouts, or premature control board failure.
  • Install difficulty: 2/5 — Shut off power at the breaker and disconnect the furnace service switch before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 0V before touching wiring). Photograph all low-voltage wiring connections before removal. Swap wire-for-wire and restore power to verify 24V output before closing the cabinet.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier GB1AAV036065ADJA gas furnace. Confirm your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.

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 GB1AAV036065ADJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV036065ADJA. 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 GB1AAV036065ADJA?
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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