Ground Loops in New Haven County, Connecticut, 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 situation, you very likely want to know a little 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,in essence, just an underground pipe system. Various basic types of ground loop systems are used for heating and cooling standard residential and commercial]26] buildings.

Antifreeze fluid flows through the pipes to move heat quickly and efficiently to a heat pump in the building.

Typically used are four different sorts of geothermal ground loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. These fall into one of two different categories: either they’re open loop systems or closed loop systems. The best system for your house is determined by your structure and the environment surrounding it. Residential systems usually use vertical or horizontal loops.

Below are additional details on each type of ground loop.

Closed systems, which encompass 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 have to have much of space. They’re installed by drilling small holes in the ground to a depth of 100-400 feet. Then pipes are driven 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.

A horizontal system takes up significantly more space but is actually less costly considering it uses only 2 straight pipes inserted 6 inches underground within an area of ¼ to ¾ acre.

In order to have 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 anchored to the bottom of the water source. Water is then transported through more pipes belowground to a pump, where the heat is extracted and cool water is returned to the pond. That said, in order for this system to work, the water can in no way be be acidic or else pipes will decay and filters will have to be replaced often.

The major 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 house or other structure.

Generally speaking, 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 crucial to note that there is no pollution generated. 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 critical to know whether a well or pond has enough water to power your geothermal heat pump, and that it won’t drain a neighbor’s well source. Be sure to check with your local contractor on whether there’s enough water available to support installing an open loop geothermal heating system.