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OEM Carrier Transformer 40VA 120V/24V for GB1AAV036065ABJA
Carrier

OEM Carrier Transformer 40VA 120V/24V for GB1AAV036065ABJA

SKU: CARRIE-GB1AAV036065ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit GB1AAV036065ABJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer HT01BC116 for Model GB1AAV036065ABJA

This OEM control transformer (part number HT01BC116) is the factory-specified replacement for the Carrier GB1AAV036065ABJA gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — your thermostat goes blank, the system won't respond to any commands, and the furnace will not attempt to start. A failed transformer is often mistaken for a bad control board, so always confirm 24V output at the secondary terminals before condemning more expensive components.

  • Specs: 40VA rating | 120V primary / 24V secondary | Single-phase | Factory-matched output tolerance for stable low-voltage circuit operation
  • OEM vs Generic: The OEM HT01BC116 transformer is wound and rated to Carrier's exact VA and voltage specifications. Generic alternatives frequently run low on VA capacity, causing nuisance tripped fuses and intermittent control circuit dropouts under full load.
  • Install Difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire nuts or quick-connect terminals, and a multimeter to verify 24V output after installation. Label all low-voltage wires before disconnecting.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier GB1AAV036065ABJA gas furnace. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate before ordering to ensure a proper match. Not sure it fits? Contact our HVAC parts specialists — we confirm fitment before you buy. In stock and ships today.

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 GB1AAV036065ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV036065ABJA. 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 GB1AAV036065ABJA?
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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