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OEM Carrier Contactor for Model PY4GNAB24040NA Condenser Unit
Carrier

OEM Carrier Contactor for Model PY4GNAB24040NA Condenser Unit

SKU: CARRIE-PY4GNAB24040NA-CONTACTOR-HN51KC024 Brand: Carrier
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor for Model PY4GNAB24040NA Condenser Unit

The contactor in your Carrier PY4GNAB24040NA is the electrically operated switch that routes 240V line power to the compressor and condenser fan whenever cooling is demanded. A 24V control signal energizes the coil and pulls the contacts together. When the contactor fails, the outdoor unit won't start, you hear a loud buzz or rapid chattering, the system runs constantly and won't cycle off (welded contacts), or it clicks repeatedly while producing no cooling. This genuine OEM contactor matches your unit's pole configuration and electrical ratings — verify single- or double-pole, a 24V coil, and contacts rated to the correct amperage (commonly 30–40A). Silver-alloy contact points handle the compressor's inrush current without rapid arcing or overheating. Why OEM matters here: low-cost aftermarket contactors use undersized, thinly plated contacts that pit and erode faster under high-amperage switching. As the points degrade, contact resistance and heat rise until they weld closed, leaving the compressor energized around the clock — a quick route to compressor burnout. The OEM contact rating is sized exactly to this unit's load. Install difficulty: 2 of 5. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter to check coil continuity and contact pull-in. #1 safety warning: cut the breaker and the condenser disconnect before servicing, and discharge the nearby run capacitor first — it stores a dangerous charge even after power is off. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PY4GNAB24040NA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.

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 Model PY4GNAB24040NA Condenser Unit?
Yes. This is the factory-specified OEM contactor for the Carrier Model PY4GNAB24040NA Condenser Unit. 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 Model PY4GNAB24040NA Condenser Unit?
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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