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OEM Carrier Transformer 40VA 120V/24V for FA4ANC018010AGAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for FA4ANC018010AGAA

SKU: CARRIE-FA4ANC018010AGAA-TRANSFORMER-HT01CN236 Brand: Carrier
✓ Guaranteed to fit FA4ANC018010AGAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V/24V for Model FA4ANC018010AGAA

This is the factory OEM replacement transformer (part number HT01CN236) for the Carrier FA4ANC018010AGAA air handler. The transformer steps down 120V line voltage to 24V to power the entire control circuit — including the thermostat, contactor coil, and control board. When this component fails, nothing works: the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and you may notice a burning smell or a tripped low-voltage fuse. If your system is completely unresponsive and all other components check out, this transformer is the first place to look.

  • Specs: 40VA rating | 120V primary / 24V secondary | Factory-matched OEM design | Integral mounting bracket | Part number HT01CN236
  • OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact VA and voltage tolerances. Generic transformers can under-deliver amperage, causing nuisance lockouts, blown fuses, and premature control board failure — always choose OEM for the control circuit.
  • Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify 24V output after installation before closing the panel. Always photograph wiring before disconnecting terminals.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as the direct factory replacement for the Carrier FA4ANC018010AGAA air handler. Verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get back to comfort 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 $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 FA4ANC018010AGAA?
Yes. This is the factory-specified OEM transformer for the Carrier FA4ANC018010AGAA. 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 FA4ANC018010AGAA?
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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