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OEM Carrier Transformer 40VA 120V/24V for FA4ANF024000AGAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for FA4ANF024000AGAA

SKU: CARRIE-FA4ANF024000AGAA-TRANSFORMER-HT01CN236 Brand: Carrier
✓ Guaranteed to fit FA4ANF024000AGAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN236 for Model FA4ANF024000AGAA

This OEM control transformer (part# HT01CN236) is the factory-specified replacement for the Carrier FA4ANF024000AGAA fan coil air handler. The transformer steps down 120V line voltage to the 24V signal required by your thermostat and control board. When the transformer fails, the entire control circuit goes dark — your thermostat will show no power, the system won't respond to calls for heating or cooling, and no relays or contactors will energize. It is often the first component to check when nothing in the system responds.

  • Specs: Input 120VAC | Output 24VAC | 40VA rating | OEM part number HT01CN236 | Factory-matched impedance and insulation class for Carrier fan coil applications
  • OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage specifications. Generic transformers frequently use undersized cores that run hot, trip thermal cutoffs prematurely, and fail within a single season — costing far more in callbacks and repeat repairs.
  • Install difficulty: 2/5 — Shut off power at the breaker and confirm with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph existing wiring connections before removal. Reconnect primary (120V) and secondary (24V) leads to matching terminals and restore power to verify 24V output.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our climate-controlled warehouse when ordered before 3 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier FA4ANF024000AGAA fan coil air handler. Always verify your unit's data plate confirms 120V primary input and 24V/40VA secondary output before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions. In stock and ready to 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 FA4ANF024000AGAA?
Yes. This is the factory-specified OEM transformer for the Carrier FA4ANF024000AGAA. 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 FA4ANF024000AGAA?
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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