In August 2022, the tax credit for geothermal heat pump installations was extended through 2034. Geothermal equipment that uses the stored solar energy from the ground for heating and cooling and that meets ENERGY STAR requirements at the time of installation is eligible for the tax credit. The credit has no limit and there's no limitation on the number of times the credit can be claimed.
The energy tax credit can be combined with solar and wind credits as well as energy efficiency upgrade credits. A 30% federal tax credit for residential ground source heat pump installations has been extended through December 31, 2032. The incentive will be lowered to 26% for systems that are installed in 2033 and 22% in 2034, so act quickly to save the most on your installation.