Capacitor Use & Care:

Dual Run Capacitors:

Some AC units use a dual run capacitor, which has three terminals (C, HERM, FAN). Ensure you reconnect the wires to the correct terminals.

Professional Help:

If you're unsure about any part of the process, it's best to consult a qualified HVAC technician.

Safety:

Capacitors can hold a dangerous electrical charge, so always exercise caution and turn off the power before working on them.

1. Safety First:
   • Turn off the power: Disconnect the power to the HVAC system at the circuit breaker.
   • Discharge the capacitor: If the old capacitor is still in place, discharge it by shorting the terminals with a screwdriver (insulated handle) to prevent electric shock.
2. Identify the Old Capacitor:
   • Locate the capacitor: It's typically found inside the outdoor unit (condenser) or sometimes in the furnace or air handler.
   • Note the specifications: Look for the microfarad (µF) and voltage ratings on the old capacitor. These values are crucial for selecting the correct replacement.
   • Check for damage: Bulging, leaking, or rust on the capacitor can indicate a problem.
   • Document the wiring: Take a photo or make a note of how the wires are connected to the old capacitor's terminals (C, HERM, FAN).
3. Install the New Capacitor:
   • Match the specifications: Purchase a new capacitor with the same µF and voltage ratings as the old one.
   • Connect the wires: Attach the wires to the corresponding terminals (C, HERM, FAN) on the new capacitor. Ensure the connections are secure.
   • Secure the capacitor: Place the new capacitor back in its mounting bracket and secure it with the strap.
4. Final Steps:
   • Reconnect the power: Turn the circuit breaker back on.
   • Test the system: Turn on the thermostat to cool and verify that the AC unit is working properly.
   • Reinstall the access panel: Replace the access panel on the AC unit.