If you want to lower your energy bills, a geothermal heat pump is a great option. It taps into a renewable energy source in order to save electricity while still keeping your home comfortable. How does geothermal heating work? Here’s what you need to know.

The Basics of How Does Geothermal Heating Work

No matter how hot or cold the weather is outside, the temperature 10 feet below ground remains around 55 degrees. Geothermal heating takes advantage of this by running a loop of pipe underground, through which fluid is cycled, absorbing that heat energy.

In summer. the fluid absorbs heat, cooling the air before it’s circulated through your home. During the cold Indiana winter, it’s used to warm the air to 55 degrees instead. A heat pump then heats the air the rest of the way before it goes through your home, but the geothermal energy acts as a supplement, reducing the amount of electricity used.

Types of Loops

That’s the basic overview of how does geothermal heating work, but how does geothermal heating work on a more technical level? Most homes use a closed-loop pipe system, wherein the same fluid flows through the pipes again and again. If you have a big yard, a horizontal loop is cheaper and easier to install. If you have less outdoor space, a vertical loop is more expensive — but more compact. A drill is used to install it downward rather than outward.

In an open-loop system, the fluid flowing through the pipes is groundwater from a well. Once it makes its way through the pipes, the water is expelled back into the ground and replaced with new water. Similarly, a pond/lake hybrid system uses a nearby body of water to cycle fluid through the pipes.

Geothermal heating is expensive to install, but the energy savings will make up for it over time. Plus, there are tax credits you can use to offset installation costs.

To learn more about geothermal heating and whether or not it would be a good fit for your home, contact us at Mowery Heating, Cooling, and Plumbing. We help Indianapolis homes keep comfortable and save energy all year long.

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