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OEM Carrier Contactor 1-Pole 30A 24V for PH14NB042000AAAA
Carrier

OEM Carrier Contactor 1-Pole 30A 24V for PH14NB042000AAAA

SKU: CARRIE-PH14NB042000AAAA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PH14NB042000AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 30A 24V Coil (HN51KC024) for Model PH14NB042000AAAA

This is the factory-authorized OEM replacement contactor for the Carrier PH14NB042000AAAA heat pump. The contactor is the high-voltage relay that closes the compressor circuit every time your thermostat calls for cooling or heating. When it fails — through pitted contacts, a burned coil, or contacts that weld shut — your system will either refuse to start entirely or run continuously without responding to thermostat commands. Replacing with the correct OEM part ensures a factory-matched fit and eliminates guesswork on coil pull-in voltage and amp ratings.

  • Specs: 1-Pole configuration | 30A FLA (Full Load Amps) | 150A LRA (Locked Rotor Amps) | 24 VAC coil voltage | 50/60 Hz | OEM Part Number: HN51KC024
  • OEM vs Generic: This is the genuine Carrier Factory Authorized Part, designed to meet exact factory specifications for coil resistance, contact gap, and arc suppression. Generic aftermarket contactors frequently carry ±10% amp tolerance and lower-grade contact alloys, which accelerates pitting and shortens service life — especially on a heat pump that cycles year-round.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before proceeding. Photograph all wiring before removing any terminals. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. After installation, verify 24V coil pull-in with a thermostat call before closing the access panel.
  • Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse — get your system running fast.

Compatibility: Engineered for the Carrier PH14NB042000AAAA heat pump. Cross-references include P282-0311, HN51CC024, HN51KB024, P282-1304, P282-1305, and 301362-101. Always verify your unit's data plate and wiring diagram before ordering. Have questions about fitment? Our parts team confirms compatibility before you buy.

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 PH14NB042000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH14NB042000AAAA. 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 PH14NB042000AAAA?
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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