Ground Loops in Greensburg, IN, Geothermal Applications

You need a new heating and cooling system. Maybe you’re weighing the advantages of a new Geothermal HVAC. Whatever the situation, you very likely want to know a little bit more about how such a system works.

Geothermal HVACs take consistent temperature from the ground to put hot or cool air into your home. This works because of an underground system called a geothermal ground loop.

Ground loops are basically just a system of pipes buried in the ground. There are several basic kinds of geothermal loop systems that can be used for heating and cooling most residential and commercial buildings.

The way it works is, antifreeze fluid flows through the pipes to get heat quickly and efficiently down to a heat pump in your house.

Typically used are four different sorts 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 you is dependent on your building and the property on which it sits. Residential systems primarily use vertical or horizontal loops.

Below are further explanations of each kind of ground loop.

Closed systems, which encompass vertical, horizontal, and pond loops, continuously circulate water through them.

Vertical ground loops are the most common type used residentially because, unlike horizontal loops, they don’t have to have a lot of space. They’re positioned by drilling small holes in the ground that go 100-400 feet deep. Then pipes are placed into the holes and connected below the ground to form the vertical loop. Next, more pipes are attached that channel fluid to the indoor system to transfer the needed temperature from the ground.

When compared to a vertical loop system a horizontal system has to have a lot more space but generally doesn’t cost as much since it uses only 2 straight pipes inserted 6 inches underground over an area of ¼ to ¾ acre.

In order to install a pond loop system, it should go without saying that you must be in close proximity to a pond, lake, pond, or well. Coils are installed vertically and anchored to the bottom of the water source. Water is then conveyed through more pipes underground to a pump, where the heat is withdrawn and cool water is put back into the pond. Still, 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 key difference between open and closed looped systems is the open loop’s need for an adequate source of groundwater, a well or a pond, for example. From there, it directly pumps water into the heat pump unit to be used in heating and cooling your dwelling or other structure.

Used water is disposed of in one of two ways: through surface drainage or water re-injection. In returning the water back to the earth, it must be said that pollution is not a by-product. The only difference in water that’s processed through a geothermal heat pump is a modest change in temperature.

Before you install an open loop system, it is essential to know whether a well or pond contains enough water to power your geothermal heat pump, and that it won’t deplete a neighbor’s well source. Be sure to check with your local contractor on whether there’s enough water in the vicinity to go ahead with installing an open loop geothermal heating system.