Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Contactor 24V Coil 2-Pole for PH1PNB036000AAAA
Carrier

OEM Carrier Contactor 24V Coil 2-Pole for PH1PNB036000AAAA

SKU: CARRIE-PH1PNB036000AAAA-CONTACTOR-HN51KB024 Brand: Carrier
✓ Guaranteed to fit PH1PNB036000AAAA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Contactor HN51KB024 for Model PH1PNB036000AAAA

This is the factory-specified OEM contactor for the Carrier PH1PNB036000AAAA heat pump system. The contactor is a high-voltage relay that controls power delivery to the compressor and condenser fan motor. When the thermostat calls for cooling or heating, the 24V control circuit energizes the contactor coil, closing the high-voltage contacts and allowing the unit to run. A failed contactor is one of the most common reasons a heat pump will not start — symptoms include a unit that hums but won't run, contacts that are visibly pitted or burned, or a system that runs continuously without shutting off due to welded contacts.

  • Specs: OEM Part Number HN51KB024 | 2-Pole design | 24V coil voltage | Factory-matched contact rating for Carrier PH1PNB036000AAAA
  • OEM vs Generic: This is a genuine OEM Carrier contactor manufactured to exact factory specifications. Generic aftermarket contactors often use lower-grade contact materials that pit and weld faster under load, shortening equipment life and risking compressor damage.
  • Install difficulty: 2/5 — Always disconnect and lock out power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals. Verify coil voltage with a multimeter before powering up.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PH1PNB036000AAAA heat pump systems. Always verify the OEM part number on your existing contactor label and confirm coil voltage before ordering. Our technical team is available to verify fitment — reach out before you order if you have any questions. Order today and get same-day shipping!

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 PH1PNB036000AAAA?
Yes. This is the factory-specified OEM contactor for the Carrier PH1PNB036000AAAA. 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 PH1PNB036000AAAA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online