Hard start capacitor
(start capacitor + potential relay) boosts aircon units and heat pump compressor torque by up to 300% to aid startup reducing startup time by 50%. It uses a start capacitor for energy storage and a relay to disconnect it once running, preventing component damage. Ideal for aging or weak compressors.
- Purpose: Increases starting torque, reduces energy usage, and extends compressor life.
- Components: A large capacitor combined with a potential relay to disconnect the capacitor after the motor starts.
- Function: Specifically helps with low voltage, hot weather, or worn-out compressors by providing extra torque to overcome friction.
- Installation: Usually connected in parallel with the run capacitor on permanent split capacitor (PSC) systems.



There are no reviews yet.