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May 2020

How Geothermal Works!

Understanding Closed Versus Open Loop Geothermal Systems

By blog, Closed Loop Ground Source Heat Pump Systems No Comments

The point of geothermal systems is to use ground loops to regulate temperature in a home. If you are considering a geothermal system, you have probably heard the terms “closed loop” and “open loop”. Here is what you need to know about both.

Know the Differences Between Closed Loop and Open Loop Systems

A closed loop geothermal system utilizes a heat transfer solution through buried pipes. You fill the loop just once, with a moderate amount of solution, requiring little work once this is done. The pipes connect to an indoor heat pump to provide temperature control.

Open loop systems take clean groundwater and deliver it to an indoor geothermal pump. When the water leaves the home, it goes through a discharge well. The water may then be re-directed into a local pond or drainage ditch.

Understand the Advantages and Disadvantages of Both

An important factor for most people making decisions about their home, is cost. With an open loop system, you do not need to drill or bury pipe. Making it the cheaper option in terms of installation. A closed loop system, on the other hand, requires trenching, drilling, and burying.

Next, is the question of durability. Open loop systems do degrade over time, especially when there is a high mineral content. Closed loop systems, while initially more expensive, can last for 50 or more years with minimal maintenance. Once installed, it becomes a permanent piece of the property.

Talk to the Professionals

Overall, installing a geothermal system for your home can provide many benefits. If you are still unsure if it’s right for you, contact the professionals at Chesapeake Geosystems. Call 410-489-1712 or email us today, we will be more than happy to answer any of your questions.