Supco SPP6 Compressor Hard Start Booster Capacitor


The Supco SPP6 Compressor hard start capacitor is my favorite hard start capacitor. I keep several of these on our truck when I was doing service calls. I have seen the SPP6 save many a compressor from the junk yard. The SPP6 is brand new and comes in a Supco factory bag.

SKU: SupcoSPP6SuperCompressorHardStartBoostCapacitor Category:


  • The Supco SPP6 Compressor Hard Start Booster Capacitor can save stuck compressor by increasing the compressor’s starting torque by 500%.
  • The Supco, Super-Boost is a solid state relay and hard start capacitor no loose parts or complicated wiring. Just wire it across your run capacitor as shown below.
  • The Super-Boost can be used on all PSC single phase 115 volt thru 288 volt air conditioning units from 4,000 to 120,000 BTU.
  • It can be used on a wide range of air conditioning compressors from 4,000 BTU window units to 10 ton commercial units.
  • The Supco Super Boost is used for tight or locked compressors, if you have low voltage, or for quick recycling of the compressor.
  • We have many of our customers use these on their RV’s or motor homes to help start the AC unit when they are using an electric generator.

Additional information

Weight 2.5 lbs
Dimensions 5 × 5 × 5 in