The answer to 'evaporator coil high energy bills' is that a malfunctioning evaporator coil is a common cause of high energy bills for HVAC systems. The evaporator coil is responsible for absorbing heat from the air inside your home, which is then expelled outside by the condenser coil. If the evaporator coil is not working properly, it will have to work harder to cool your home, leading to higher energy consumption and higher utility bills.
Some common symptoms of an evaporator coil issue include poor airflow, uneven cooling, and the coil freezing up. This can be caused by a variety of factors, such as a refrigerant leak, a blocked air filter, or a problem with the blower fan. In some cases, the coil may simply be old and need replacement.