We recommend you join our preventative maintenance program to ensure that you are scheduling regular maintenance on your system and to take advantage of preventative maintenance agreement customer discounts. Preventative maintenance is simply one measure you can take to make sure your system is running properly. Does your cooling system have the proper refrigerant charge? Is your system communicating properly to the thermostat controls? Is your condenser fan operating properly? Is the heat exchange working? Are the wires all connected properly? These questions can't be answered without a professional technician inspecting your system to ensure problems are not arising. A little prevention can go a long way to saving you money later.