Ground Loops in Baltimore, Maryland, 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 case, you undoubtedly want to know a little bit more about how such a system works.

Geothermal HVACs take consistent temperature from the ground to deliver hot or cool air to your home’s interior. 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. There are several basic sorts of ground loop systems that can be used for heating and cooling most residential and commercial buildings.

Antifreeze fluid goes through the pipes to get heat quickly and efficiently to a heat pump in the house.

There are 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 best system for you is contingent on the building and the environment surrounding it. Residential systems primarily use vertical or horizontal loops.

Below are more specifics on each kind 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 a lot of space. They’re positioned by drilling small-diameter holes in the ground that extend 100-400 feet deep. Then pipes are placed 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.

When compared to a vertical loop system a horizontal system requires significantly more space but is typically less costly because it uses 2 straight pipes set 6 inches in the earth over an area of ¼ to ¾ acre.

If you want a pond loop system, you plainly must be close to a pond, lake, pond, or well. Coils are installed vertically and attached to the bottom of the water source. Water is then transferred through more pipes beneath the earth to a pump, where the heat is withdrawn and cool water is put back into the pond. Nevertheless, in order for this system to work, the water must not be acidic or else pipes will corrode 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 ample 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.

There are two ways to dispose of used water: through surface drainage or water re-injection. In returning the water back to the earth, it’s worth mentioning that there’s no pollution. The only difference in water that’s processed through a geothermal heat pump is a slight change in temperature.

Prior to installing 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 exhaust a neighbor’s well source. See that you check with your local contractor on whether there’s enough water on hand to warrant installing an open loop geothermal heating system.