I had a Electrosmart unit installed in June 2010 ON A 90DAY PROBATION PERIOD however I have had constant bad service from this unit and have had no cost savings on my electrical bill over the past two months.Electrosmart was quick to install this unit without permission and are now refusing to remove it.Thus unit is a complete watse of time and money.It seems that this company likes to try and grab a persons money but is very slow in sticking to thier 90day momney back policy.