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OEM Carrier 40A Contactor 2-Pole 24V Coil for CH13NA01800GAABA
Carrier

OEM Carrier 40A Contactor 2-Pole 24V Coil for CH13NA01800GAABA

SKU: CARRIE-CH13NA01800GAABA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit CH13NA01800GAABA — 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 CH13NA01800GAABA

This is the factory-specified OEM contactor (part# HN51KC024) for the Carrier CH13NA01800GAABA split-system air conditioner. The contactor is a high-voltage relay controlled by the 24V signal from your thermostat — when the call for cooling comes in, the contactor closes and sends 240V line voltage to the compressor and condenser fan motor. When the contactor fails, the result is an AC unit that simply won't turn on, chatters loudly, or stays energized even after the thermostat satisfies. Burned or pitted contacts are the most common failure mode, especially after lightning events or prolonged use.

  • Specs: 2-Pole configuration | 24V AC coil voltage | 40A rated | Replaces OEM part number HN51KC024 | Factory-matched to Carrier specifications
  • OEM vs Generic: This OEM contactor is built to Carrier's exact coil pull-in voltage and contact material specifications. Generic contactors may use lower-grade silver alloy contacts that pit faster under load, leading to repeat failures within one to two seasons.
  • Install difficulty: 2/5 — Always shut off power at both the disconnect box and breaker panel before beginning. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal. The contactor slides into a standard bracket and terminals accept spade or screw connections.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model CH13NA01800GAABA. Confirm your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — don't guess on a high-voltage component. Order today and get your system back online 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 Contactor fit my Carrier CH13NA01800GAABA?
Yes. This is the factory-specified OEM contactor for the Carrier CH13NA01800GAABA. 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 CH13NA01800GAABA?
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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