System Components
Capacitor
An electrical component that stores and releases energy to start your compressor and fan motors, acting like a battery that gives them the initial boost to get running.
What Is a Capacitor?
Capacitors are small cylindrical components that provide the electrical jolt motors need to start up (start capacitors) and the steady energy supply to keep them running efficiently (run capacitors). Your outdoor AC unit typically has capacitors for both the compressor and the condenser fan motor. Capacitors are one of the most common failure points in residential HVAC systems, especially during hot weather when they're working hardest. A failed capacitor will prevent your motor from starting.
Why It Matters for Your Home
Capacitor failure is one of the top reasons AC systems stop working during summer heat waves. Symptoms include the outdoor unit humming but not starting, the fan spinning slowly, or the system clicking on and off. The good news: capacitors are relatively inexpensive to replace. The bad news: they fail most often when you need cooling the most. Regular maintenance can catch weak capacitors before they fail completely.
AC not starting? It could be a capacitor. Call Trademark Tek at 541-500-0663 for quick, expert repair.
Quick Facts
Category
System Components
Also Known As
Capacitor
