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OEM Carrier Transformer 40VA 120/24V for GB3AAV024070ABJA
Carrier

OEM Carrier Transformer 40VA 120/24V for GB3AAV024070ABJA

SKU: CARRIE-GB3AAV024070ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit GB3AAV024070ABJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 120V/24V for Model GB3AAV024070ABJA

This OEM replacement transformer (part number HT01BC116) is the factory-specified control circuit transformer for the Carrier GB3AAV024070ABJA 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 controls. When this component fails, the entire control circuit goes dead — nothing responds, the thermostat goes blank, and the furnace will not attempt to start. If your system is completely unresponsive and you've already ruled out a tripped breaker, a failed transformer is one of the first components to test.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched output for Carrier low-voltage control circuits
  • OEM vs Generic: This OEM unit is wound to exact factory VA and voltage tolerances. Undersized or off-tolerance generic transformers can overload under peak demand from multiple low-voltage devices, causing nuisance trips or premature failure of the control board.
  • Install difficulty: 2/5 — Shut off power at the breaker before starting. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts. Label or photograph all wiring connections before disconnecting. Verify output voltage with a multimeter after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier GB3AAV024070ABJA gas furnace. Always verify the OEM part number HT01BC116 against your unit's data plate and wiring diagram before ordering. Our team is available to confirm fitment prior to purchase — don't let a cold night wait. Order today and ship 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 GB3AAV024070ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB3AAV024070ABJA. 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 GB3AAV024070ABJA?
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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