Hartland Controls, a Littelfuse Company, offers easy-to-install hard start kits that improve efficiency in compressors. Hard start capacitors allow A/C units and heat pump compressors to start up at maximum efficiency, allowing the unit to reach a normal rated speed up to ten times faster. Hard start capacitors are also useful in difficult conditions, such as low voltage or undersized wiring, and reduce light dimming during compressor start-up. The HHS series capacitors eliminate the heat surge that typically occurs at start-up and help extend the life of the compressor, terminals, windings, and capacitor.