The answer to 'why is my central air high energy bills' is that there are several common causes, including an old or inefficient system, poor insulation, air leaks, and problems with the ductwork. Symptoms may include the system running constantly, uneven cooling, and high energy bills. Solutions can range from simple DIY fixes to professional maintenance and upgrades.
For example, dirty air filters or leaky ductwork can reduce efficiency and cause the system to work harder, driving up energy costs. Replacing the air filter and sealing ductwork are relatively easy DIY tasks. However, more complex issues like an oversized system or problems with the compressor may require a professional HVAC technician to diagnose and repair.