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OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PH1ZNA042000AAAA
Carrier

OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PH1ZNA042000AAAA

SKU: CARRIE-PH1ZNA042000AAAA-CAPACITOR-P291-4054RS Brand: Carrier
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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Dual Run Capacitor 40+5 MFD 440V for Model PH1ZNA042000AAAA

This is the factory-specified OEM dual run capacitor (part number P291-4054RS) for the Carrier PH1ZNA042000AAAA split-system heat pump. The dual run capacitor stores and releases the electrical charge needed to start and continuously run both the compressor and condenser fan motor. When this capacitor weakens or fails, you'll notice symptoms like a humming unit that won't start, the system short-cycling off within seconds, or a condenser fan spinning sluggishly or not at all. Left unaddressed, a failing capacitor forces the compressor to draw locked-rotor amperage, dramatically shortening its life. A secondary single run capacitor (part number P291-1503) is also available for applications where individual run support is needed.

  • Specs: 40+5 MFD (microfarad) | 440V rated | Round case | ±6% tolerance | 50/60 Hz | AFC: 10,000 | Castor oil protected | No PCB | RoHS compliant
  • OEM vs Generic: This is a genuine Carrier OEM capacitor meeting exact factory tolerances. Generic aftermarket units often drift ±10% MFD or more, accelerating wear on both the compressor and fan motor and voiding equipment warranties. Note: Carrier sources capacitors from certified third-party manufacturers — labeling will reflect the capacitor maker, not Carrier, which is completely normal for OEM parts.
  • Install Difficulty: 2/5 — Capacitors store a lethal charge even after power is cut. Always discharge the capacitor before handling using an insulated resistor or discharge tool. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Typical job time: 15–30 minutes for a confident DIYer.
  • Warranty & Shipping: 1-year OEM manufacturer's warranty against defects. In-stock orders ship same business day from our warehouse. Also replaces legacy Carrier part numbers HC98KA041 and P291-4053RS.

Compatibility: Designed for the Carrier PH1ZNA042000AAAA heat pump condenser. Verify the MFD rating and voltage stamped on your existing capacitor's data label before ordering — never substitute a different MFD value. Our technical team is available to confirm fitment before you buy. Order today and get back to comfort fast.

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 Capacitor fit my Carrier OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PH1ZNA042000AAAA?
Yes. This is the factory-specified OEM capacitor for the Carrier OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PH1ZNA042000AAAA. 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 capacitor on my Carrier OEM Carrier Dual Run Capacitor 40+5 MFD 440V — PH1ZNA042000AAAA?
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 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 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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Mike Rivera
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