Upgrading your ductwork costs from $1,500 to $7,000 for this project. You may need to pay the cost to upgrade your ductwork to accommodate larger systems. On top of that, increased home sizes also mean an increase in the varying sizes of heat exchangers and lengths of looping needed to construct a larger model. Here’s a quick overview of the size of geothermal heat pump systems based on square footage.Ī moderate-sized home of about 2,400 square feet will need a 4-ton system. ![]() Since prices are based on a ton of capacity, the bigger your home, the bigger the demand for your system, and the bigger the ton of capacity. Your home’s square footage plays the largest role in the price of your geothermal installation. A licensed local HVAC contractor will help with this process. Look into required permits like a National Pollutant Discharge Elimination System Permit to see what’s required. State water rights and discharge permits will add to the cost of this project. Open-loop systems draw clean water in from one intake well and discharge it to a different well or system. Local RegulationsĬheck with your local regulatory agency and state environmental and building regulatory agencies to see what regulations are in place. For example, extremely dry soil may need additional irrigation to moisten the soil for better heat transfer. Professional soil testing costs run an average of $1,400 and help determine which installation materials will be used. For example, putting piping below frost lines requires more material, heavy equipment, and higher labor costs. Installing a geothermal heat pump in extreme climates will likely cost more than in more temperate climates. The price of your geothermal installation varies depending on several factors. Used when land area is insufficient for a horizontal system Runs many feet straight down into the earth $20,000–$38,000 (Most expensive, because it involves deep and wide boring) Slinky options use less land area but need highly conductive soil (the general rule is the deeper, the better) $15,000–$34,000 (least expensive closed-loop system)Ĭomes in slinky styles (with overlapping coils) or straight pipes All of these factors can increase the cost of your open-loop pump system in the long run. Your local laws might require you to have a discharge permit or even treat the water before returning it to the ground. You’ll also want to consult local laws governing open-loop systems, as they have the potential to damage natural water supplies. A professional can help you determine the best type for your home. They're less expensive to install but require more regular maintenance. They draw clean water in from one intake well and discharge it to a different well or system. Pros can install them in areas with limited water sources, prohibitive environmental regulations, or with pond configurations.Īn open-loop system, on the other hand, is a less common option that utilizes ground or well water. Open-Loop SystemsĪ closed-loop system is a more common option that runs water through a circular loop of piping, typically using an antifreeze liquid solution. Here is a closer look at the different types of geothermal heat pump systems. Geothermal systems come in four varieties or configurations-closed-loop systems, which include horizontal, vertical, and water-source, and an open-loop system-with installations ranging from $2,500 to $5,000 or more per ton. Each project is evaluated to determine which configuration is best suited for the application.Find hiring guides, material costs, expert advice, how-to's and more. The ground loop can take several different configurations: horizontal, vertical, pond/lake or open loop. The fluid in the pipes leaves the home or building in a warm state, and after it circulates through the ground loop, it returns cooler. In the winter, the solution absorbs the heat from the ground and is pumped through the geothermal unit in your home. ![]() In order to transfer the heat energy between the earth and your house or building, the system requires a heat exchanger which is called the ground loop.Ī series of pipes (ground loop) is buried under your yard, filled with an anti-freeze solution which is circulated through the pipes, making the loop a highly efficient conductor of energy. When the building requires heat, the geothermal system extracts heat stored in the ground from the sun’s solar energy when cooling is required, the geothermal system extracts heat from the building and stores it in the ground until it’s required for heating.
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