Ground Loops in Omaha, Nebraska, Geothermal Applications

You’ve just bought or are looking into purchasing a a new heating and cooling system. Maybe you’re considering a new Geothermal HVAC. Whatever the case, you probably want to know a little bit more about how geothermal 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 pretty much just a series of pipes buried in the earth. Various basic sorts of ground loop systems are used for heating and cooling most residential and commercial buildings.

It works when antifreeze fluid travels through plastic pipes to move heat fast and efficiently down to a heat pump in your house.

Typically used are four different sorts of 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 best system for your house is determined by the building and its surroundings. Household systems typically use vertical or horizontal loops.

Below are further explanations of each kind of ground loop.

Closed systems, which consist of vertical, horizontal, and pond loops, continuously push 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 installed by drilling tight-diameter 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.

When compared to a vertical loop system a horizontal system requires significantly more space but actually is less pricey since it uses only 2 straight pipes inserted 6 inches down in the ground in an area of ¼ to ¾ acre.

In order to install a pond loop system, you obviously 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 Water is then moved through more pipes beneath the earth to a pump, where the heat is withdrawn and cool water is put back into the pond. Still, in order for this system to work, the water must not be acidic or else pipes will erode and filters will need to be replaced often.

The essential difference between open and closed looped systems is the open loop’s need for an adequate source of groundwater, like a well or pond. From there, it directly pumps water into the heat pump unit for use 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’s worth noting that there’s no pollution. 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 vital 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. Make certain you check with your local contractor on whether there’s enough water on hand to support installing an open loop geothermal heating system.