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OEM Carrier Transformer 40VA 120/24V for GB1AAV036035AAJA
Carrier

OEM Carrier Transformer 40VA 120/24V for GB1AAV036035AAJA

SKU: CARRIE-GB1AAV036035AAJA-TRANSFORMER-HT01BC116 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model GB1AAV036035AAJA

This OEM replacement transformer (part number HT01BC116) is the factory-specified control circuit transformer for the Carrier GB1AAV036035AAJA gas furnace. The transformer steps line voltage down from 120V AC to the 24V AC signal required to power the thermostat, control board, gas valve, and all low-voltage components. When this part fails, the entire control circuit goes dead — the thermostat shows no response, the furnace will not initiate a heating cycle, and no diagnostic codes will flash on the control board because there is simply no power to the system's brain.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Direct factory-matched replacement for Carrier GB1AAV036035AAJA
  • OEM vs Generic: This OEM transformer meets Carrier's exact VA rating and insulation class. Undersized generic transformers can overheat under full control circuit load, tripping internal thermal fuses and causing intermittent or repeated failures that are difficult to diagnose.
  • Install difficulty: 2/5 — Shut off all power to the furnace at the breaker and disconnect switch before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, needle-nose pliers, multimeter (to verify 24V output after install). Label or photograph all low-voltage wiring connections before removing the old transformer.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier GB1AAV036035AAJA gas furnace. Always verify the transformer's primary/secondary voltage ratings and VA rating on your unit's wiring diagram or data plate before ordering. If you have any questions about fitment, our HVAC parts specialists verify compatibility before you complete your purchase — call or chat today and get your furnace back online fast.

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 GB1AAV036035AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV036035AAJA. 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 GB1AAV036035AAJA?
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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