Solar panels are warrantied to 25 years to a certain performance level. They still work after that, but tend to have reduced performance.
Geothermal systems have about the same 25 year expected lifetime. A lot will depend on if the owner keeps on top of maintenance or not. Given that most homeowners replace their water heaters in <10 years when it could have lasted 30 with good maintenance practices, it’s fair to say it’ll be closer to 25 years for a geothermal system when it could last 50.
Solar panels are warrantied to 25 years to a certain performance level. They still work after that, but tend to have reduced performance.
Geothermal systems have about the same 25 year expected lifetime. A lot will depend on if the owner keeps on top of maintenance or not. Given that most homeowners replace their water heaters in <10 years when it could have lasted 30 with good maintenance practices, it’s fair to say it’ll be closer to 25 years for a geothermal system when it could last 50.