The heating and cooling is spread through the building via the distribution system. In most cases, this would be through a forced-air system – just like you would use with a conventional furnace.
Another popular method for distribution would be the use of a hydronic or hot water systems. With this system, heat from the building is transferred into water inside the high-temperature heat exchanger and either pumped directly into the distribution system or to an insulated tank where it is stored until it is required to heat the building. The most popular methods of hydronic heating with ground source energy systems are using heated radiant floors or fan coils, if a heated floor is not possible.
Although heating and cooling are both possible with forced-air methods, the hydronic methods can only be used for radiant heating purposes.