Carolina Quality can also perform preventive maintenance on your heating and cooling systems that should be done every six months. We have a 26 point check list for each season. Where as we clean your equipment and check all other components of your system such as amp draws on motors and compressors, and checks all electrical wiring, among other things. This helps us to keep a check on wear and tear of system. This way we can catch and take care of smell problems that could lead to bugger problems down the road. We also offer a yearly maintenance agreement that includes the two maintenances and labor free services calls with seven days a week 24 hour service, Holidays included.