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OEM Carrier Transformer 40VA 120V-24V for FA4ANF024008AGAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for FA4ANF024008AGAA

SKU: CARRIE-FA4ANF024008AGAA-TRANSFORMER-HT01CN236 Brand: Carrier
✓ Guaranteed to fit FA4ANF024008AGAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V–24V for Model FA4ANF024008AGAA

This is the factory OEM replacement control transformer (part number HT01CN236) for the Carrier FA4ANF024008AGAA fan coil air handler. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including your thermostat, contactor coil, and control board. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any calls for heating or cooling, and nothing works despite power being present at the unit.

  • Specs: Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01CN236 | Factory-matched to Carrier FA4ANF024008AGAA control circuit requirements
  • OEM vs Generic: This OEM transformer is wound and rated to exact factory specifications. Generic transformers frequently underperform on VA capacity, causing control board brownouts, nuisance trips, and premature contactor coil failure — issues the OEM unit is engineered to prevent.
  • Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wiring connections before removal. Verify 24V output with a multimeter after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships the same business day from our warehouse.

Compatibility: Designed and factory-specified for the Carrier FA4ANF024008AGAA fan coil air handler. Confirm your unit's control voltage and VA rating on the data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to verify compatibility before you purchase — same-day shipping available on all in-stock orders.

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 FA4ANF024008AGAA?
Yes. This is the factory-specified OEM transformer for the Carrier FA4ANF024008AGAA. 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 FA4ANF024008AGAA?
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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