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OEM Carrier Contactor 2-Pole 24V Coil for CA13NA01800GADAA
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for CA13NA01800GADAA

SKU: CARRIE-CA13NA01800GADAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit CA13NA01800GADAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model CA13NA01800GADAA

This is the factory OEM replacement contactor (part number HN51KC024) for the Carrier CA13NA01800GADAA split-system air conditioner. The contactor is the high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to power the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the outdoor unit will not energize at all, or may run continuously without responding to thermostat commands.

  • Specs: 2-pole configuration | 24V coil voltage | 30-amp rated contacts | Direct OEM replacement for part number HN51KC024 | Factory-matched contact material and coil resistance
  • OEM vs Generic: OEM Carrier contactors use factory-spec silver-alloy contacts that resist pitting and arcing over thousands of switching cycles. Generic contactors often use lower-grade contacts that degrade faster under the high inrush current of compressor startup, leading to premature failure and potential compressor damage.
  • Install difficulty: 3/5 — Always disconnect power at the disconnect box AND the breaker before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter for coil continuity check. Photograph all wiring connections before removing the old contactor. Line-voltage terminals carry 240V — exercise extreme caution.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: This contactor is the direct OEM replacement for the Carrier CA13NA01800GADAA single-stage split-system air conditioner. Always verify your existing contactor's pole count, amperage rating, and coil voltage against your unit's data plate and wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us before placing your order.

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 Contactor fit my Carrier CA13NA01800GADAA?
Yes. This is the factory-specified OEM contactor for the Carrier CA13NA01800GADAA. 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 contactor on my Carrier CA13NA01800GADAA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor 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 contactor?
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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