Ground Loops in Long Island, NY, Geothermal Applications

You’ve just gotten or are thinking about purchasing a a new heating and cooling system. Maybe you’re considering a new Geothermal HVAC. Whatever the case, you very likely want to know a little more about how geothermal works.

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

Ground loops are,in essence, just a series of pipes buried in the earth. Several basic kinds of ground loop systems are used for heating and cooling most residential and commercial buildings.

It works when antifreeze fluid flows through these plastic pipes to transfer heat effectively and efficiently up to a heat pump in the building.

There are four different kinds of geothermal ground loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. All four fall into one of two categories: either they’re open loop systems or closed loop systems. The right system for you is contingent on the structure and its environment. Residential systems primarily use vertical or horizontal loops.

Below are more specifics on each kind of ground loop.

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

Vertical ground loops are used typically in residences because, unlike horizontal loops, they don’t take up a significant amount of space. They’re installed by drilling small holes in the ground to a depth of 100-400 feet. Then pipes are placed into the holes and connected below the ground to form the vertical loop. Next, more pipes are attached that carry fluid to the indoor system to transfer the needed temperature from the ground.

In comparison with a vertical loop system, a horizontal system takes up a lot more space but typically is less pricey considering it just uses 2 straight pipes placed 6 inches underground in an area of ¼ to ¾ acre.

If you want a pond loop system, it should go without saying that you must be near a pond, lake, pond, or well. Coils are installed vertically and attached to the bottom of the water source. Water is then conveyed through more pipes beneath the earth to a pump, where the heat is drawn out and cool water is put back into the pond. Nevertheless, in order for this system to work, the water can in no way be be acidic or else pipes will corrode and filters will have to be replaced often.

The primary 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 home or other structure.

Generally speaking, 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 must be pointed out that there is no pollution generated. The only difference in water that’s processed through a geothermal heat pump is a minute change in temperature.

Before installing 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. See that you check with your local contractor on whether there’s enough water on hand to support installing an open loop geothermal heating system.