Carolina Heating & Air Design believes the best way to keep your current heating and air conditioning system running to the best of it's ability is to have it maintained twice a year. Our Preferred Customer Agreement not only keeps your system clean, but it also helps keep the system running at it's peak efficiency. This saves you on utilities! It also allows us to run tests on the system, parts, and components. This will give us a heads up if you have a part that is becoming weak or worn. We will let you know if there are any parts that may need to be replaced, and not leave you with no heating or cooling when it is needed most. We try our best to perform all maintenance inspections preseason. Below is a detailed list of what is included with our PCA.