What MFD capacitor do I need for my Tempstar AC?

The correct replacement for Tempstar model TCH648GKA200 — 30+7.5 MFD 370V | Ships Today 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 Tempstar equipment which lists the model number TCH648GKA200 — 30+7.5 MFD 370V | Ships Today.

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 Tempstar 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.

Tempstar

Tempstar Dual Run Capacitor for TCH648GKA200 — 30+7.5 MFD 370V | Ships Today

Name: Tempstar Dual Run Capacitor for TCH648GKA200 — 30+7.5 MFD 370V | Ships Today
Brand: Tempstar
SKU: 1174851-GEN
Price: 22.95 USD
Availability: InStock

SKU: 1174851-GEN Brand: Tempstar

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Overview

This OEM round dual run capacitor (part #1174851) provides the starting and running torque for both the compressor and condenser fan motor in your Tempstar TCH648GKA200. It is rated at 30+7.5 MFD and 370V — the 30 MFD section serves the compressor and the 7.5 MFD section serves the condenser fan motor. The capacitor stores and releases electrical energy to keep these motors running efficiently. A failed capacitor is the single most common cause of an air conditioner that hums but won't start, a condenser fan that won't spin, or a compressor that trips on overload. Bulging, leaking, or a reading outside ±6% of the rated MFD all indicate replacement is due.

Specifications

Spec	Value
Part Number	1174851
Type	Dual Run, Round
Brand	Tempstar
Capacitance	30 + 7.5 MFD
Voltage	370V
Fitment	OEM

Compatibility

Direct-fit replacement for the Tempstar TCH648GKA200 condensing unit. The same 30+7.5 MFD / 370V round dual capacitor is shared across matching ICP-family condensers from Heil, Comfortmaker, and Tempstar. A 440V-rated capacitor of the same MFD may be substituted, but never use a lower MFD value than specified.

Installation Guide

Safety First — Disconnect power at the breaker and disconnect, then discharge the capacitor across its terminals with an insulated resistor. Verify zero voltage with a multimeter.
Access — Remove the condensing unit's electrical service panel.
Document — Photograph the HERM, FAN, and COM terminal wiring before removing any leads.
Remove — Pull the spade connectors, loosen the mounting strap, and lift out the old capacitor.
Install — Secure the new capacitor in the strap and reconnect leads to HERM (compressor), FAN, and COM exactly as photographed.
Test — Restore power and confirm the compressor and condenser fan start promptly on a cooling call.

Signs You Need a Replacement

Compressor or fan hums but will not start
Condenser fan blade must be spun by hand to get going
Visible bulging top, leaking oil, or rusted casing
Measured capacitance reads outside ±6% of 30 or 7.5 MFD

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.

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 info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

Tempstar Dual Run Capacitor for ...

$22.95

Frequently Asked Questions

Does this Capacitor fit my Tempstar TCH648GKA200 — 30+7.5 MFD 370V | Ships Today?

Yes. This is the factory-specified OEM capacitor for the Tempstar TCH648GKA200 — 30+7.5 MFD 370V | Ships Today. 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 Tempstar TCH648GKA200 — 30+7.5 MFD 370V | Ships Today?

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 Tempstar 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 Tempstar 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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