Ground Loops in Knox County, Ohio, 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 bit more about how one works.

Geothermal HVACs variously cool and heat your home by extracting ground temperature. This is possible 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 sorts of ground loop systems that can be used for heating and cooling commercial or residential buildings.

It works when antifreeze fluid travels through plastic pipes to get heat effectively and efficiently down to a heat pump in your home.

There are four different sorts of 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 right system for your house is contingent on your building and its surroundings. Household systems usually 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 circulate water through them.

Vertical ground loops are the most common type used residentially because, unlike horizontal loops, they don’t need a lot of space. They’re installed by drilling small holes in the ground to a depth of 100-400 feet. Then pipes are inserted 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 desired temperature from the ground.

A horizontal system takes up significantly more space but usually costs less because it uses 2 straight pipes set 6 inches in the earth 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
secured to the bottom of the water source. Water is then conveyed through more pipes beneath the earth to a pump, where the heat is withdrawn and cool water is returned to the pond.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 corrode 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.

Normally, 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 pollution is not a by-product. The only difference in water that’s processed through a geothermal heat pump is an insignificant change in temperature.

Before you install an open loop system, it is essential to know whether a well or pond has enough water to power your geothermal heat pump, and that it won’t use up a neighbor’s well source. Make sure you check with your local contractor on whether there’s enough water in the vicinity to go ahead with installing an open loop geothermal heating system.