Sherman industry was amazing!!! The work they did on our home was beyond what we could have ever expected. The real joy was not paying for oil to heat our home this past winter. Everyone we know was paying 3 to 4 times more then they did in previous years. Last summer without our central air system geothermal cooled our house perfectly even on the hottest of days. Our electric bill is down overall and we have no oil bill either. Our savings are in the thousands each year!!! Thank you Sherman