There are many types of air conditioning systems, but they all work on the same principle. They take heat from the house air and transfer it to the exterior. The most common type of air conditioning found in New Jersey is Central Air; this system works with a furnace. The ductwork that is used for heat in the winter is used for cool air in the summer. A less common type is the Independent system that doesn’t use a furnaces ductwork – they can be ductless or have their own ductwork. No matter what type of system the house has, we inspect them. We inspect all permanently installed hard-wired cooling systems.