White Oak Plumbing and Heating is the installation of an Outdoor Unit and an Indoor Unit(s) which are connected by two refrigerant lines that are charged. One refrigerant line conducts from the Indoor Unit(s) to the Outdoor Unit, which in turns cools the refrigerant in summer. The cooler then returns to the Indoor Unit using the second charged line. There are strict guide lines and regulation regarding these and their handling to protect our environment. There are now available more environmentally friendly. Reputable manufacturers use the most environmentally friendly available or as regulated by high Standards.

Air conditioning systems can be either coolingor Reverse Cycle. A Reverse Cycle System cools in summer and heats in winter. Most closed circuit systems are available as Reverse Cycle these days, so that the home or building can be both cooled and heated.