Janet G. - Doylestown, Ohio

Dear Dennis Sisler and Company:
Paul and I wish to express our heartfelt appreciation for the excellent work done in the replacement of our heating and cooling geothermal system. All the guys were very professional and efficient. They left our home neat and clean as well. It is difficult to come up with words that express how relieved and happy we are to have the Envision geothermal heat pump, replacing the Hydro-Delta unit. The Envision is remarkably quiet and our home is at a comfortable temperature, even during the recently cold nights. After two and a half years, we finally have a system we can live with and are enjoying our "new" home! We will readily recommend your company to everyone we know, especially those that are considering geothermal heating & cooling.