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OEM Carrier Transformer 40VA 120/24V for GB1AAV024065AFJA
Carrier

OEM Carrier Transformer 40VA 120/24V for GB1AAV024065AFJA

SKU: CARRIE-GB1AAV024065AFJA-TRANSFORMER-HT01CN001 Brand: Carrier
✓ Guaranteed to fit GB1AAV024065AFJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 120V to 24V for Model GB1AAV024065AFJA

This is the OEM factory-specified step-down transformer (part number HT01CN001) for the Carrier GB1AAV024065AFJA gas furnace. The transformer converts 120V line voltage to the 24V signal required to power the control board, thermostat, and all low-voltage control circuits. When this component fails, the entire control circuit goes dead — your thermostat will appear unresponsive, the furnace won't fire, and the system will not respond to any call for heat or cooling. It is one of the first components to check when a unit shows zero activity.

  • Specs: 40VA rated | 120V primary input | 24V secondary output | Class 2 transformer | Direct OEM replacement for part number HT01CN001
  • OEM vs Generic: This OEM unit is wound to Carrier's exact VA rating and insulation class, ensuring reliable 24V output under full control-circuit load. Undersized generic transformers can sag voltage under load, causing intermittent lockouts, erratic board behavior, and premature failure of downstream components.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier GB1AAV024065AFJA gas furnace. Always confirm the OEM part number HT01CN001 and your unit's data plate voltage ratings match before ordering. Our fitment team is available to verify compatibility prior to purchase — order with confidence and get your system back up 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 GB1AAV024065AFJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV024065AFJA. 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 GB1AAV024065AFJA?
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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