Ground Loops in Port Washington, Wisconsin, Geothermal Applications

You’ve finally gotten, or are considering getting, a a new heating and cooling system. Maybe you’re weighing the advantages of a new Geothermal HVAC. If so, you probably want to know a little more about how such a system works.

Geothermal HVACs variously cool and heat your home by extracting ground temperature. This works because of an underground system called a geothermal ground loop.

Ground loops are,in essence, just an underground pipe system. There are a few basic types of geothermal loop systems that can be used for heating and cooling standard residential and commercial]26] buildings.

The way it works is, antifreeze fluid goes through plastic pipes to transfer heat quickly and efficiently to a heat pump in the building.

Typically used are four different kinds of ground loops: Open Loop, Pond Loop, Horizontal Loop and Vertical Loop. These are divvied up into two categories categories: either they’re open loop systems or closed loop systems. The right system for your house is determined by your building and its environment. Residential systems typically use vertical or horizontal loops.

Below are additional details 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 commonly in residences because, unlike horizontal loops, they don’t take up much of space. They’re set in place by drilling small holes in the ground that go 100-400 feet deep. Then pipes are placed into the holes and connected below the ground to form the vertical loop. Next, additional pipes are attached that carry fluid to the indoor system to transfer the desired temperature from the ground.

A horizontal loop system has to have much more space but is actually less expensive considering it uses 2 straight pipes placed 6 inches underground in an area of ¼ to ¾ acre.

If you’re partial to a pond loop system, you plainly must be close to a pond, lake, pond, or well. Coils are installed vertically and affixed to the bottom of the water source. Water is then conveyed through more pipes underground to a pump, where the heat is withdrawn and cool water is returned to the pond.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 sufficient source of groundwater, a well or a pond, for instance. From there, it directly pumps water into the heat pump unit to be used in heating and cooling your home 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 must be pointed out that pollution is not a by-product. The only difference in water that’s processed through a geothermal heat pump is a minute change in temperature.

Before you install an open loop system, it is essential 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. Be sure to check with your local contractor on whether there’s enough water at hand to support installing an open loop geothermal heating system.