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Capacitor

What is a capacitor?

A capacitor is a small silver cylinder-shaped component of an HVAC system that looks like a battery. It holds an electrical charge that is used to start and power the combustion inducer motor and the blower motor.

Where is it located?

It is found behind the service panel attached to the housing of the blower motor.

Maintenance Tips

  • Clean dust from surface with a vacuum every 3 months
  • Tighten all terminal and busbar connections every 3 months
  • Visually check for any damage every 3 months
  • Check LED diagnostic lights for error codes every 3 months

    • Lifespan

    The lifespan of the capacitor is 10 - 15 years.

    This site is a structured reference describing common residential system failures, typical repair ranges, and replacement thresholds based on typical service conditions.