Ground Loops in WISCONSIN-MINNESOTA, Wisconsin, Geothermal Applications

You need a new heating and cooling system. Maybe you’re partial to the idea of a new Geothermal HVAC. Whatever the circumstances, you very likely want to know a little bit more about how geothermal 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,in essence, just a series of pipes buried in the earth. There are a few basic types of ground loop systems that can be used for heating and cooling most residential and commercial buildings.

Antifreeze fluid travels through these plastic pipes to transfer heat quickly and efficiently to a heat pump in your home.

There are four different types 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 right system for your home is determined by the specific building and the property on which it sits. Home systems mostly use vertical or horizontal loops.

Below are additional details on each sort of ground loop.

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

Vertical ground loops are the most common type used residentially because, unlike horizontal loops, they don’t require a lot of space. They’re positioned 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, additional pipes are attached that convey fluid to the indoor system to transfer the necessary temperature from the ground.

In contrast to a vertical loop system, a horizontal system needs significantly more space but usually costs less because it uses 2 straight pipes set 6 inches in the ground in 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 anchored to the bottom of the water source. Water is then moved through more pipes beneath the earth to a pump, where the heat is drawn out and cool water is put back into the pond. However, in order for this system to work, the water can not be acidic or else pipes will decay and filters will need replacing often.

The key difference between open and closed looped systems is the open loop’s need for a plentiful 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 taken care of in one of two ways: through surface drainage or water re-injection. In returning the water back to the earth, it’s worth mentioning that there is no pollution generated. The only difference in water that’s processed through a geothermal heat pump is a slight 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. Make sure you check with your local contractor on whether there’s enough water at hand to go ahead with installing an open loop geothermal heating system.