Ground Loops in Central , Ohio, Geothermal Applications

You’ve finally gotten, or are thinking about getting, a a new heating and cooling system. Maybe you’re considering 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 deliver hot or cool air to your home’s interior. This can be done because of an underground system called a geothermal ground loop.

Ground loops are basically just an underground pipe system. There are a few basic types of these systems that can be used for heating and cooling conventional residential and commercial]26] buildings.

It works when antifreeze fluid flows through these plastic pipes to get heat quickly and efficiently to a heat pump in the building.

Typically used are four different types of geothermal ground 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 contingent on the specific structure and the environment surrounding it. Household systems typically use vertical or horizontal loops.

Below are more specifics on each kind of ground loop.

Closed systems, which include 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 need much of space. They’re set in place by drilling small holes in the ground that extend 100-400 feet deep. Then pipes are inserted into the holes and connected below the ground to form the vertical loop. Next, extra pipes are attached that channel fluid to the indoor system to transfer the necessary temperature from the ground.

A horizontal system takes up much more space but actually doesn’t cost as much since it just uses 2 straight pipes placed 6 inches down in the ground in an area of ¼ to ¾ acre.

If you’re thinking of getting a pond loop system, it should be evident that you 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 transferred through more pipes beneath the earth to a pump, where the heat is pulled out and cool water is put back into the pond. However, 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 essential difference between open and closed looped systems is the open loop’s need for an adequate 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 house or other structure.

There are two ways to dispose of used water: through surface drainage or water re-injection. In returning the water back to the earth, it’s worth mentioning 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 essential to know whether a well or pond contains enough water to power your geothermal heat pump, and that it won’t exhaust a neighbor’s well source. Be sure to check with your local contractor on whether there’s enough water in the vicinity to justify installing an open loop geothermal heating system.