All Places in Illinois

Geothermal Heat Pump Installers in Illinois

Illinois's diverse climate and stable geology make geothermal heat pumps an increasingly attractive heating and cooling solution for homeowners and businesses across the state. Our directory connects you with 63 verified geothermal installers operating in 52 cities and regions throughout Illinois, including 6 IGSHPA-certified professionals who meet the highest industry standards. Rockford leads the state with 4 dedicated installers, though you'll find qualified contractors in communities statewide to serve your installation needs. While Illinois does not offer a state-level geothermal tax credit, the federal §25D residential credit also ended December 31, 2025 under the One Big Beautiful Bill Act — so ComEd and Ameren utility rebates are now the primary way to reduce your upfront cost.