What MFD capacitor do I need for my Tempstar AC?

The correct replacement for Tempstar model TCA936GKA100 — Single Run | 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 TCA936GKA100 — Single Run | 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 40 MFD 440V Run Capacitor for TCA936GKA100 — Single Run | Ships Today

Name: Tempstar 40 MFD 440V Run Capacitor for TCA936GKA100 — Single Run | Ships Today
Brand: Tempstar
SKU: 1185068-GEN
Price: 22.00 USD
Availability: InStock

SKU: 1185068-GEN Brand: Tempstar

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM single run capacitor (part 1185068) is rated 40 MFD at 440V and provides the running torque for a motor in the Tempstar TCA936GKA100 condensing unit. A run capacitor stores and releases energy to keep the compressor or condenser fan motor turning efficiently. As capacitors age they lose capacitance, bulge, or leak — causing hard starts, overheating, and premature motor failure. Replacing a weak capacitor with the correct 40 MFD / 440V OEM-spec part restores full motor performance and protects the more expensive motor it serves.

Specifications

Spec	Value
Part Number	1185068
Type	Single Run Capacitor
Brand	Tempstar (ICP / Heil)
Capacitance	40 MFD
Voltage Rating	440V

Compatibility

Direct-fit replacement for the Tempstar TCA936GKA100 and shared ICP/Heil/Comfortmaker units calling for a 40 MFD 440V run capacitor. A 440V capacitor may safely replace a 370V unit of the same MFD; confirm capacitance before installing.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter, then discharge the capacitor across its terminals with an insulated resistor.
Access — Remove the condenser service panel.
Document — Photograph the capacitor terminal wiring before disconnecting.
Remove — Pull the leads and loosen the mounting strap.
Install — Secure the new capacitor and reconnect each terminal exactly per your photo.
Test — Restore power and confirm the motor starts smoothly and runs without hesitation.

Signs You Need a Replacement

Motor hums but won't start, or starts slowly
Bulged, leaking, or domed capacitor top
Measured capacitance well outside the 40 MFD rating
Compressor or fan overheating and tripping

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 40 MFD 440V Run Capacit...

$22.00

Frequently Asked Questions

Does this Capacitor fit my Tempstar TCA936GKA100 — Single Run | Ships Today?

Yes. This is the factory-specified OEM capacitor for the Tempstar TCA936GKA100 — Single Run | 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 TCA936GKA100 — Single Run | 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.

Menu