We had a geothermal system in our previous home, and these folks are skilled at servicing such systems. They also service other systems. There was a light blinking on our system which wasnÃ¢â‚¬â„¢t blinking before. We thought there was something wrong. They came out, and fixed the problem. It only took 30 seconds to fix, so they didnÃ¢â‚¬â„¢t charge us at all, and they told us what to do if the problem happened again.