Tecumseh K146-36 Start Capacitor

When you are troubleshooting a compressor that hums but fails to turn over, the Tecumseh K146-36 Start Capacitor is often the primary suspect. This heavy-duty 88/108 MFD 250V start capacitor is engineered specifically to provide the high-octane starting torque required for single-phase motors and compressors to overcome initial head pressure. Maintaining a refrigeration start capacitor within these exact microfarad parameters ensures the motor reaches synchronous speed rapidly, preventing the start windings from drawing excessive current for too long.

The K146-36 is a standard HVAC start capacitor replacement for various Tecumseh hermetic units. It features a rugged phenolic case designed to withstand the high-temperature environments found in condensing units. This 250-volt start cap is frequently used in hard start kits to assist compressors in systems with non-bleed TXVs where pressures do not equalize during the off-cycle. For reliable HVACR motor starting, technicians rely on this 88-108 MFD capacitor to ensure clean, consistent cycles and protect the longevity of the compressor.

• Optimal Starting Torque: High 88-108 MFD rating provides the necessary electrical boost for quick rotor acceleration under load.
• Voltage Stability: Rated for 250V applications, offering a robust safety margin for standard 208-230V commercial circuits.
• System Protection: Minimizes duration of locked rotor amps (LRA), reducing thermal stress on internal motor components.
• Broad Compatibility: Direct OEM-spec Tecumseh compressor part used across multiple residential and light commercial refrigeration platforms.

• Can I use this for a 110V motor? While capacitors can typically handle voltages below their rating, always verify the MFD requirements of the specific 110V motor to ensure proper torque.
• Why did the previous capacitor bulge or leak? This is often caused by short cycling or a sticking potential relay that fails to remove the start capacitor from the circuit once the motor is up to speed.
• Should I install a bleed resistor? Many veteran contractors add a bleed resistor across the terminals to dissipate stored energy and prevent arcing at the relay contacts.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.