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The SUPCO tp-6 is a hard start kit designed to improve startup torque for single-phase compressors rated from 1/2 HP to 3 HP. Hard start kits add a start capacitor and relay in parallel with the run capacitor circuit, giving the compressor motor the extra torque it needs to start under high-load or low-voltage conditions. This reduces compressor wear, shortens startup time, and lowers inrush current draw. Licensed HVAC technicians install this component during routine service calls or as a corrective measure when compressors struggle to start or trip breakers on startup.
The tp-6 is suited for residential and light commercial air conditioning and refrigeration systems with single-phase compressors in the 1/2 HP to 3 HP range. It is commonly installed on older equipment where capacitors have weakened over time or where frequent hard starts are causing premature compressor failure. This kit is a standard service component carried by HVAC technicians for field installation on split systems, package units, and refrigeration compressors.
Designed as an OEM-style replacement or add-on hard start solution for single-phase compressors rated 1/2 HP to 3 HP in residential and light commercial HVAC and refrigeration applications.
Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before accessing the electrical compartment or handling capacitors, as capacitors retain a charge even after power is removed and must be safely discharged before work begins. Refer to local codes and equipment wiring diagrams when making connections. Do not operate the compressor without verifying that the hard start kit is correctly wired and all covers are reinstalled.
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