Ground Loops in New Jersey, New Jersey, Geothermal Applications

You’ve just purchased or are mulling over buying 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 bit more about how geothermal works.

Geothermal HVACs take consistent temperature from the ground to put hot or cool air into your home. This can be done because of an underground system called a geothermal ground loop.

Ground loops are essentially just an underground pipe system. Various basic sorts of ground loop systems are used for heating and cooling commercial or residential buildings.

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

There are four different types of 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 best system for your house is dependent on your structure and the property on which it sits. Residential systems primarily use vertical or horizontal loops.

Below are more specifics on each type of ground loop.

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

Vertical ground loops are used typically in residences because, unlike horizontal loops, they don’t take up a significant amount of space. They’re positioned by drilling small-diameter holes in the ground to a depth of 100-400 feet. Then pipes are inserted into the holes and connected below ground to form the vertical loop. Next, additional pipes are attached that channel fluid to the indoor system to transfer the desired temperature from the ground.

In contrast to a vertical loop system, a horizontal system needs significantly more space but is actually less pricey considering it uses only 2 straight pipes set 6 inches in the earth over an area of ¼ to ¾ acre.

If you’re partial to a pond loop system, it should go without saying that you must be in close proximity to a pond, lake, pond, or well. Coils are installed vertically and fastened to the bottom of the water source. Water is then moved through more pipes underground to a pump, where the heat is extracted and cool water is reintroduced to the pond. Still, in order for this system to work, the water must not be acidic or else pipes will corrode and filters will need to be replaced often.

The primary 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.

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