Starting capacitors in place on an air conditioning compressor (C) InspectAPedia.comElectric Motor Start / Run Capacitor Location
Guide to the Proper Placement or Location of Electric Motor Start-Boost or Run Capacitors

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Motor capacitor location: how to find & recognize the electric start, run, or hard starting capacitor on an air conditioner or heat pump system. This air conditioning, heat pump, or other electric motor repair article series discusses the selection, installation, testing, & use of electric motor starter start and run capacitors designed to get a hard-starting air conditioner compressor motor, fan motor, refrigerator, or freezer compressor or other electric motor (such as a well pump) going.

This electric motor capacitor article series explains the selection, installation, testing, & use of electric motor starter start and run capacitors used on various electric motors found in or at buildings such as air conditioner compressors, fan motors, some well pumps and some heating equipment.

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How & Where to Find or Locate the Starter Capacitor in or on Electrical Equipment

Starting capacitors in place on an air conditioning compressor (C) InspectAPedia.comLook for starter capacitors in your air conditioning equipment in the outside air handler where a starter capacitor may be used to aid compressor motor start-up, and look for a smaller motor starting capacitor on fan motors, both

A three-phase electric motor typically won't have a starter capacitor, but you won't find many residential cooling systems wired for 3-phase current. You also won't see a starter capacitor on scroll-type refrigeration compressor motors.

In our photo of a rather messy wiring job at left you can see two separate capacitors marked by the blue and red arrows.

Also see MOTOR CAPACITOR TYPES for help in determining which capacitor is which on your HVAC or other electrical equipment.

Start & Run & Dual Capacitor Specification References

Examples & Sources of Start / Run Motor Capacitors

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LOCATE the STARTING CAPACITOR at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

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