WaterFurnace Systems
The most efficient heating and cooling system anywhere.

WaterFurnace geothermal systems provide the most efficient, environmentally friendly space conditioning available today.

Three Basic Geothermal Energy Sources
Closed-loop systems circulate a water-based solution through a "loop system " of small-diameter, high-density polythylene underground pipes. Closed-loop systems can be installed horizontally, vertically or in a pond. Open-loop systems use an existing water well or surface water. Regardless of whether the system is open or closed, heat is transferred to or from the structure to provide year-round comfort, no matter what the outdoor temperature.

	Horizontal Loops Often used when adequate land surface is available. Depending on system needs and space available, pipes are placed in trenches that range in length from 100 to 400 feet.
	Vertical Loops The ideal choice when available land surface is limited. Well drilling equipment is used to bore small-diameter holes from 100 to 400 feet deep.
	Pond & Lake Loops Very economical to install when a large body of water is available. Coils of pipe are simply placed on the bottom of the pond or lake.
	Open Loops (Well Water Systems) In ideal conditions, an open-loop application can be the most economical type of geothermal system. These use groundwater from a well as a direct energy source.

Closed loop WaterFurnace systems require an antifreeze solution in colder climates for freeze protection and enhancement of the system's performance. Since antifreeze is required, the choice of formulation becomes very important. Environol is formulated to maintain system efficiency without risk to the environment. This makes Environol the right blend for even the most exacting closed loop installations.

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