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OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060111AGJA
Carrier

OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060111AGJA

SKU: CARRIE-GB1AAV060111AGJA-TRANSFORMER-HT01CN001 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN001 for Model GB1AAV060111AGJA

This OEM replacement control transformer (part# HT01CN001) is the factory-specified unit for the Carrier GB1AAV060111AGJA gas furnace. The transformer steps down line voltage from 120V AC to 24V AC, powering the low-voltage control circuit that operates your thermostat, gas valve, inducer relay, and all control board logic. When this component fails, the entire control circuit goes dead — nothing responds, the thermostat goes blank, and the furnace will not attempt to fire under any condition.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched impedance and thermal protection | Direct OEM replacement for part number HT01CN001
  • OEM vs Generic: OEM transformers from Carrier are wound to exact VA and voltage tolerances, ensuring stable 24V output under full load. Generic alternatives frequently run under-rated VA, causing voltage sag that trips boards and confuses thermostats — leading to misdiagnosis and repeat service calls.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output after install. Label all wiring before disconnecting the old transformer.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier GB1AAV060111AGJA gas furnace. Verify your existing transformer's VA rating and primary/secondary voltage on the unit's data plate or wiring diagram before ordering. This is a direct drop-in replacement for OEM part number HT01CN001. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork, no returns.

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 OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060111AGJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060111AGJA. 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 OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060111AGJA?
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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