San Diego HVAC Guide
Why Does My AC Keep Turning On and Off in San Diego?
If your AC turns on and off every few minutes, the system may be short cycling. This usually indicates the system is not operating under normal conditions.
What short cycling means
The system cannot complete a full cooling cycle
Short cycling happens when the AC shuts down before it finishes a normal cooling run.
Common causes
Several problems can cause frequent cycling
Dirty filters, thermostat issues, refrigerant problems, electrical faults, or oversized equipment can trigger repeated start and stop cycles.
What homeowners notice
The system starts every few minutes
This pattern often leads to uneven cooling, higher energy bills, and more wear on major components.
Why diagnosis matters
The root cause must be tested
A technician can measure airflow, refrigerant pressure, and electrical controls to determine why the system is cycling.
Need a clear answer?
A diagnostic visit is $75. That includes travel, system testing, and a clear explanation of what your system is doing and what makes sense next.