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OEM Carrier Transformer 40VA 120/24V for FA4ANF024005AGAA
Carrier

OEM Carrier Transformer 40VA 120/24V for FA4ANF024005AGAA

SKU: CARRIE-FA4ANF024005AGAA-TRANSFORMER-HT01CN236 Brand: Carrier
✓ Guaranteed to fit FA4ANF024005AGAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Transformer 40VA 120V/24V for Model FA4ANF024005AGAA

This OEM control circuit transformer (part number HT01CN236) is the factory-specified replacement for the Carrier FA4ANF024005AGAA air handler. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, control board, and all relay coils. When the transformer fails, the entire control circuit goes dead: the thermostat display may go blank, the system won't respond to any calls for heating or cooling, and you may detect a burning smell or a blown 3A fuse on the control board.

  • Specs: 40VA rating | Primary: 120V | Secondary: 24V AC | Factory-matched impedance and thermal protection | Replaces OEM part number HT01CN236
  • OEM vs Generic: This factory OEM transformer is wound to exact Carrier specifications, ensuring proper VA capacity and thermal cutoff protection. Undersized or generic transformers can overheat under load, causing repeated fuse failures and nuisance lockouts.
  • Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Photograph or label all wiring connections before removal.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as the direct factory replacement for the Carrier FA4ANF024005AGAA air handler. Always verify your unit's data plate voltage rating and VA requirement before ordering. If you're unsure of fitment, our HVAC parts specialists can verify compatibility before you buy — 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 FA4ANF024005AGAA?
Yes. This is the factory-specified OEM transformer for the Carrier FA4ANF024005AGAA. 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 FA4ANF024005AGAA?
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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