Ground Loops in Huntington, Indiana, Geothermal Applications

It’s time for you to get a new heating and cooling system. Maybe you’re partial to the idea of a new Geothermal HVAC. Whatever the circumstances, you probably want to know a little more about how one works.

Geothermal HVACs variously cool and heat your home by extracting ground temperature. This works because of an underground system called a geothermal ground loop.

Ground loops are pretty much just an underground pipe system. There are various basic kinds of these systems that can be used for heating and cooling commercial or residential buildings.

The way it works is, antifreeze fluid goes through plastic pipes to get heat effectively and efficiently to a heat pump in the building.

Typically used are four different types of loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. All four are split into two distinct categories: either they’re open loop systems or closed loop systems. The best system for your house is determined by the specific building and its surroundings. Home systems usually use vertical or horizontal loops.

Below are further explanations of each type of ground loop.

Closed systems, which include vertical, horizontal, and pond loops, continuously move water through them.

Vertical ground loops are used most often in residences because, unlike horizontal loops, they don’t require much of space. They’re set in place by drilling small-diameter holes in the ground that extend 100-400 feet deep. Then pipes are inserted into the holes and connected below the ground to form the vertical loop. Next, additional pipes are attached that channel fluid to the indoor system to transfer the desired temperature from the ground.

A horizontal system requires a lot more space but usually doesn’t cost as much considering it uses only 2 straight pipes set 6 inches in the ground in an area of ¼ to ¾ acre.

In order to make use of a pond loop system, it should be evident that you must be in close proximity to a pond, lake, pond, or well. Coils are installed vertically and fastened to the bottom of the water source. Water is then transported through more pipes underground to a pump, where the heat is extracted and cool water is put back into the pond. Nevertheless, in order for this system to work, the water can never be be acidic or else pipes will corrode and filters will need replacing often.

The big difference between open and closed looped systems is the open loop’s need for a plentiful source of groundwater, a well or a pond, for instance. From there, it directly pumps water into the heat pump unit to be used in heating and cooling your home or other structure.

Most often, used water is taken care off in either of these ways: through surface drainage or water re-injection. In returning the water back to the earth, it is important to note that there is no pollution generated. The only difference in water that’s processed through a geothermal heat pump is a minor change in temperature.

Before you install an open loop system, it is vital to know whether a well or pond has enough water to power your geothermal heat pump, and that it won’t use up a neighbor’s well source. Be sure to check with your local contractor on whether there’s enough water at hand to justify installing an open loop geothermal heating system.