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OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060135AGJA
Carrier

OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060135AGJA

SKU: CARRIE-GB1AAV060135AGJA-TRANSFORMER-HT01CN001 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN001 for Model GB1AAV060135AGJA

This is the factory OEM replacement transformer (part number HT01CN001) for the Carrier GB1AAV060135AGJA gas furnace. The transformer steps down line voltage from 120V to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When it fails, the system goes completely silent: no thermostat response, no call-for-heat activity, and no error codes because the board itself has lost power. A failed transformer is one of the most commonly misdiagnosed furnace faults, often mistaken for a bad control board.

  • Specs: 40VA rated | 120V primary / 24V secondary | Class 2 control circuit transformer | Direct OEM replacement for part number HT01CN001
  • OEM vs Generic: The OEM HT01CN001 transformer is wound to Carrier's exact VA rating and insulation class. Undersized or off-brand transformers can overheat under normal control circuit loads, tripping thermal protection or failing prematurely within one heating season.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connect terminals. Label all low-voltage wiring before removal. Most installs complete in under 30 minutes.
  • Warranty: 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier GB1AAV060135AGJA gas furnace. Always verify your existing transformer's VA rating and primary/secondary voltages on the data plate before ordering to confirm fitment. Our HVAC parts specialists are available to confirm compatibility before you purchase — order with confidence and get your heat back on fast.

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 — GB1AAV060135AGJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier 40VA Transformer 24V Control Circuit — GB1AAV060135AGJA. 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 — GB1AAV060135AGJA?
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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