What MFD capacitor do I need for my Carrier AC?

The correct replacement for Carrier model PH1ZNA048000AAAA Condensing Unit is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number PH1ZNA048000AAAA Condensing Unit.

My AC hums but will not start. What part do I need?

An AC that hums but will not start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost needed to start the compressor and fan motors. When it fails, you hear the hum of the motor trying to start but it cannot overcome inertia. Other symptoms include the fan spinning slowly, the AC cycling on and off rapidly, or a visibly swollen or leaking capacitor. Replacement cost: $15 to $80 for the part, DIY in 30 minutes.

Is this capacitor compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier 45+5 MFD Run Capacitor for PH1ZNA048000AAAA Condensing Unit

Name: OEM Carrier 45+5 MFD Run Capacitor for PH1ZNA048000AAAA Condensing Unit
Brand: Carrier
SKU: CARRIE-PH1ZNA048000AAAA-CAPACITOR-P291-1503
Price: 56.95 USD
Availability: InStock

SKU: CARRIE-PH1ZNA048000AAAA-CAPACITOR-P291-1503 Brand: Carrier

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OEM Carrier Run Capacitor for PH1ZNA048000AAAA Condensing Unit

The run capacitor stores and releases electrical energy to provide the phase-shifted current that lets your Carrier condenser's compressor and outdoor fan motor start and run smoothly. Over years of heat cycling, its capacitance slowly fades until it can no longer carry the load. Common failure symptoms a homeowner will notice include a loud hum from the outdoor unit that never starts, a fan that turns sluggishly or stalls, warm air at the supply vents, repeated short-cycling, clicking at the contactor, or a breaker that keeps tripping. A swollen or oil-leaking cap top confirms the failure on sight. This dual-run capacitor matches the precise MFD and voltage Carrier engineered for the PH1ZNA048000AAAA — typically a combined HERM/FAN value such as 45+5 MFD rated 440/370 VAC. OEM construction guarantees a tight ±5% tolerance, keeping both the compressor and fan motor inside their designed current window for reliable starts and quiet operation. Why OEM matters for this part: budget aftermarket capacitors are often rated to a sloppy ±10-15% tolerance with thinner foil windings. When the MFD is off, the compressor windings draw extra amperage and overheat, quietly eroding the life of your system's costliest component. A correctly rated OEM cap removes that risk. Installation difficulty: 2 of 5. Tools needed: insulated screwdriver, 1/4" nut driver, needle-nose pliers, and a multimeter with capacitance mode to confirm the reading. #1 safety warning: a charged capacitor can deliver a dangerous shock even with the breaker off — ALWAYS discharge it across its terminals through an insulated resistor before disconnecting any wires, and photograph the wiring first. 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 PH1ZNA048000AAAA. 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

OEM Carrier 45+5 MFD Run Capacit...

$56.95

Frequently Asked Questions

Does this Capacitor fit my Carrier PH1ZNA048000AAAA Condensing Unit?

Yes. This is the factory-specified OEM capacitor for the Carrier PH1ZNA048000AAAA Condensing 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 capacitor on my Carrier PH1ZNA048000AAAA Condensing Unit?

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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