A heat exchanger is the equipment that is built to efficiently transfer heat from one medium to another. In some cases the media is kept separated by a wall and in others it is able to have contact. This type of equipment is used readily in air conditioning and refrigeration to help heat and cool a structure. When referencing a heat exchanger as it relates to air conditioning, the term used to describe it is air coils or coils. These coils are used to cool water and blow cold air into the building. In this situation a refrigerant is used to do the work while the coils then move the cold air out into the room.
There are many cases when you would enlist the help of a professional in dealing with a heat exchanger. A professional can help you keep your heat exchanger in good working order by performing regular maintenance. They should also be the first person you call when your heat exchanger has stopped being effective. Working on these pieces of equipment can be challenging and require specialized training to ensure that they are set up correctly to handle either heating or cooling the way that they should be.