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OEM Carrier Contactor COA0300H1D Genuine HVAC Replacement Part

SKU: carrier-contactor-coa0300h1d Brand: Carrier
$39.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Contactor COA0300H1D Genuine HVAC Replacement Part

Bring dependable switching back to your Carrier outdoor unit with the genuine OEM contactor COA0300H1D. This definite-purpose contactor controls the line-voltage circuit that powers the compressor and condenser fan, closing each time your system calls for cooling. Built to factory-original Carrier tolerances, it delivers crisp contact action and resists the arcing, pitting, and coil burnout that cause premature aftermarket failures. The COA0300H1D is designed specifically for Carrier model COA0300H1D, so the coil voltage, contact rating, and terminal layout match your existing part exactly for an easy replacement. The job rates as a moderate DIY task: turn off power at the disconnect, photograph the wiring, transfer the leads one at a time to the new contactor's terminals, and fasten it securely. Most homeowners finish in 20 to 30 minutes, but a licensed HVAC technician is recommended when high voltage is involved. Order before 3PM CST for same-day shipping. Don't risk compressor damage from a faulty contactor — replace it with genuine Carrier OEM and restore reliable cooling.

Compatibility

This part is compatible with Carrier model COA0300H1D.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier OEM Carrier Contactor COA0300H1D Genuine HVAC Replacement Part?
Yes. This is the factory-specified OEM contactor for the Carrier OEM Carrier Contactor COA0300H1D Genuine HVAC Replacement Part. 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 OEM Carrier Contactor COA0300H1D Genuine HVAC Replacement Part?
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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