The answer to 'AC high energy bills' is that there are several common causes, including an oversized or inefficient AC unit, poor insulation, air leaks, and dirty air filters. Symptoms can include the AC running constantly, uneven cooling, and high utility bills. Solutions may involve upgrading to a properly sized and energy-efficient system, sealing air leaks, adding insulation, and regularly replacing air filters.
While some basic maintenance like changing air filters can be done DIY, more complex issues like refrigerant leaks or ductwork problems should be handled by a professional HVAC technician. They have the expertise to properly diagnose and fix the root cause to improve your AC's efficiency and reduce energy costs.