Geothermal

Environmental Benefits 

• Geothermal energy produces fewer greenhouse gases by using the earth’s energy instead of releasing gases into the atmosphere. It can also be more reliable than other sources of energy that rely on certain weather conditions.

Economic Benefits

• Investing in a geothermal heat pump can provide lower heating and cooling bills, savings on heating and cooling costs can range from 30-70% per year. An underground loop can last 50 or more years, and the indoor unit typically lasts 20-25 years. Making geothermal an effective long-term solution.

Investing in a geothermal system may qualify you for the Residential Clean Energy Tax Credit. This credit covers 30% of the installation cost for systems installed between 2022 and 2032. You can claim the credit each year you install eligible equipment, until the credit begins to phase out in 2033. Geothermal pumps need to be Energy Star certified to qualify. To learn more about the qualifications visit Federal Tax Credits for Energy Efficiency | ENERGY STAR.

Additionally, homeowners can save up to $6,000 on a geothermal heat pump system through ComEd’s program. To apply, you must work with an ICC-certified contractor from the ComEd Service Provider network and receive pre-approval before installation. To learn more visit Home Heating & Cooling Discounts | ComEd - An Exelon Company.

Geothermal heat pumps are known for being low-maintenance systems, but like any equipment, a little care goes a long way.

• Every 1–3 months check air filters and clean or replace them if dirty.
• Once or twice a year during Spring or Fall inspect the system for a more thorough cleaning and to make sure there are no leaks or odd noises.
• Annually, have a professional tune-up; they’ll check the anti-freeze levels, clean coils, and ensure everything runs efficiently.
• Ground loops (the buried part of the system) are durable and usually maintenance-free for decades.

An example of Best Practices and Tips for system maintenance can be found here.

Geothermal energy supports the Village’s goal of reaching 100% renewable energy for municipal buildings by 2040. The Village is already exploring geothermal options as part of its Renewable Energy Implementation Plan. By using geothermal systems in municipal buildings and encouraging residents to do the same, Northbrook is reducing dependence on fossil fuels, cutting utility costs, and taking meaningful steps toward a more sustainable future.