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OEM Carrier Transformer 40VA 120/24V for GB1AAV024070AFJA
Carrier

OEM Carrier Transformer 40VA 120/24V for GB1AAV024070AFJA

SKU: CARRIE-GB1AAV024070AFJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit GB1AAV024070AFJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 120V/24V for Model GB1AAV024070AFJA

This is the factory OEM replacement transformer (part number HT01BC116) for the Carrier GB1AAV024070AFJA gas furnace. The transformer steps down line voltage from 120V to the 24V signal required to power the control board, thermostat circuit, and all low-voltage safety controls. When the transformer fails, the entire control circuit goes dead — the thermostat display may go blank, the system will not respond to any calls for heat or cooling, and no diagnostic fault codes will appear because the board itself has no power to operate.

  • Specs: 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BC116 | Factory-matched construction for full control circuit compatibility
  • OEM vs Generic: The OEM HT01BC116 transformer is wound to exact VA tolerances for the GB1AAV024070AFJA control board. Undersized generic transformers can sag under load, causing intermittent lockouts, nuisance tripping on the integrated circuit breaker, and premature board failure.
  • Install difficulty: 2/5 — Shut off all power at the breaker and disconnect switch before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before removal. The transformer typically mounts to the furnace cabinet with two screws and connects via spade or wire-nut terminals.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier GB1AAV024070AFJA gas furnace. Confirm existing transformer VA rating and primary/secondary voltages on the data plate or original unit label before ordering. If you are unsure of fitment, our HVAC parts specialists can verify compatibility before you purchase — same-day shipping available on all in-stock OEM components.

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 GB1AAV024070AFJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV024070AFJA. 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 GB1AAV024070AFJA?
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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