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OEM Carrier Run Capacitor MA1AJX018005AAAA for Model MA1AJX018005AAAA
Carrier

OEM Carrier Run Capacitor MA1AJX018005AAAA for Model MA1AJX018005AAAA

SKU: carrier-run-capacitor-ma1ajx018005aaaa Brand: Carrier
$24.95

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

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OEM Carrier Run Capacitor MA1AJX018005AAAA for Model MA1AJX018005AAAA

This genuine OEM Carrier run capacitor (MA1AJX018005AAAA) supplies the constant electrical charge your fan motor and compressor need for smooth, efficient startup and operation. A worn or bulging capacitor is one of the most common causes of an air conditioner that hums but won't start, cycles erratically, or trips the breaker—and left unchecked it can burn out the compressor. Manufactured to exact factory voltage and microfarad specifications, this capacitor is a precise match for Carrier model MA1AJX018005AAAA and rated to handle the heat and vibration of outdoor condenser units. The replacement is an easy 15-minute task for confident homeowners; just kill power at the disconnect and discharge the old capacitor before touching the terminals. Selecting the authentic OEM component means correct ratings and dependable service life you can trust over cheap aftermarket parts. We stock this capacitor and ship same-day on orders placed before 3PM CST, so you avoid long downtime in the heat. Replace the contactor at the same time for a complete tune-up. Backed by our fit guarantee and live HVAC support.

Compatibility

This part is compatible with Carrier model MA1AJX018005AAAA.

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 Run Capacitor fit my Carrier Model MA1AJX018005AAAA?
Yes. This is the factory-specified OEM run capacitor for the Carrier Model MA1AJX018005AAAA. 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 run capacitor on my Carrier Model MA1AJX018005AAAA?
Difficulty: Easy (20–30 min)
Step 1: Turn off power at breaker. Step 2: Open condensing unit panel. Step 3: Photograph the old capacitor wiring (Common/Herm/Fan). Step 4: Discharge old capacitor with insulated screwdriver. Step 5: Disconnect and remove old capacitor. Step 6: Mount new capacitor, reconnect wires to matching terminals. Step 7: Close panel, restore power, test. Tools: screwdriver, needle-nose pliers.
My AC hums but won’t start. What part do I need?
An AC that hums but won’t start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost to start the compressor. When it fails, you hear humming but the motor can’t overcome inertia. Other symptoms: fan spinning slowly, AC cycling on/off rapidly, or a visibly swollen capacitor. Fix: replace capacitor ($15–$80 DIY, 30 min).
Is this run capacitor 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 run capacitor?
OEM strongly recommended. OEM capacitors have ±6% MFD tolerance vs aftermarket ±10%. The looser tolerance causes motor winding stress, higher temps, and shorter compressor life. Price difference is only $10–$20 — OEM is the clear value choice.
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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