Radiant heat and geothermal energy are efficient renewable energy sources.  Geothermal energy is obtained by tapping heat from the earth’s core and converting that heat into usable energy.  Home and building radiant heating systems work by supplying heat directly to the floor, or to panels in the wall or ceiling. Radiant energy travels equally well in any direction, and because it is easily felt, it allows you to keep your home at a lower temperature, thus lowering energy bills.  Radiant heating is cleaner and healthier than other heating sources, since it does not blow dirt, dust, and bacteria around the home or dry out the air.  There are varying types of radiant heating systems, including closed systems, open direct systems, indirect systems, and combined systems.  Solar power can also be incorporated into radiant heating systems, making them even more eco-friendly and energy efficient.   Providers in this section offer environmentally friendly radiant heat systems and components, including heat exchangers, heat transfer plates, high efficiency boilers, circulating pumps, storage tanks, hydronic controls, tubing, and other radiant heating supplies and products, as well as systems related to the use of geothermal energy.