What MFD capacitor do I need for my Carrier AC?

The correct replacement for Carrier model Model 24SPA618W0030001 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 Model 24SPA618W0030001.

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.

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Carrier

Carrier Capacitor HC98KA035 for Model 24SPA618W0030001

Name: Carrier Capacitor HC98KA035 for Model 24SPA618W0030001
Brand: Carrier
SKU: CARRIE-24SPA618W0030001-HC98KA035
Price: 49.95 USD
Availability: InStock

SKU: CARRIE-24SPA618W0030001-HC98KA035 Brand: Carrier

$49.95

Market price $58.76

SAVE $8.81 (15%) vs market

Genuine Carrier OEM part · Guaranteed to fit your unit

✓ Guaranteed to fit 24SPA618W0030001 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Direct factory replacement HC98KA035 for the Carrier 24SPA618W0030001, matched to the original build sheet. Fitment guaranteed — free returns if it doesn't fit.

Specifications

Uf	35/3 MFD (dual run)
Voltage	440 VAC
Shape	round
VA Rating	440 VAC
OEM Part Number	HC98KA035
Brand	Carrier
Condition	New — genuine OEM

Symptoms of a failing capacitor

Watch for: Weak airflow from a slow blower, the motor overheats and cycles off, a chattering contactor downstream. Catching it early protects the components around it.

Replacement guide

Kill power at the disconnect and discharge the old capacitor across its terminals with an insulated screwdriver. Photograph the wiring, then move one lead at a time — HERM to the compressor, FAN to the fan motor, C to common. Seat the new capacitor in its strap, restore power, and confirm the fan reaches full speed within seconds.

FAQ

Is this the exact OEM part for my 24SPA618W0030001? Yes — verified factory fitment for that model.

Not sure of your model? Chat with Mike with the number from your unit's nameplate and we'll confirm before you order.

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

Carrier Capacitor HC98KA035 for ...

$49.95

Frequently Asked Questions

Does this Capacitor fit my Carrier Model 24SPA618W0030001?

Yes. This is the factory-specified OEM capacitor for the Carrier Model 24SPA618W0030001. 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 Model 24SPA618W0030001?

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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