Ground Loops in Meridian, Mississippi, Geothermal Applications

You’ve just bought or are looking into buying a a new heating and cooling system. Maybe you’re considering a new Geothermal HVAC. Whatever the situation, you undoubtedly want to know a little more about how such a system 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 basically just a series of pipes buried in the earth. Several basic kinds of these systems are used for heating and cooling commercial or residential buildings.

The way it works is, antifreeze fluid flows through these plastic pipes to transfer heat quickly and efficiently up to a heat pump in your house.

There exist four different sorts of ground 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 right system for your house is contingent on the building and its environment. Home systems usually use vertical or horizontal loops.

Below are additional details on each type of ground loop.

Closed systems, which include 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 require a significant amount of space. They’re installed by drilling small holes in the ground that go 100-400 feet deep. Then pipes are driven into the holes and connected below the ground to form the vertical loop. Next, extra pipes are attached that channel fluid to the indoor system to transfer the needed temperature from the ground.

A horizontal loop system takes up much more space but is generally not as pricey because it uses only 2 straight pipes placed 6 inches underground over an area of ¼ to ¾ acre.

In order to install a pond loop system, you obviously must be close to a pond, lake, pond, or well. Coils are installed vertically and affixed to the bottom of the water source. Water is then transferred through more pipes underground to a pump, where the heat is pulled out and cool water is put back into the pond. That said, in order for this system to work, the water can never be be acidic or else pipes will corrode and filters will need to be replaced often.

The major difference between open and closed looped systems is the open loop’s need for a sufficient 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 house or other structure.

Most often, used water is disposed off in either of the following 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 negligible change in temperature.

Prior to installing an open loop system, it is critical to know whether a well or pond holds 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 go ahead with installing an open loop geothermal heating system.