Due to the a/c’s lack of cooling and my outrages electric bills I had wanted to replace my unit with a newer up to date type. After a visit from Mr Tommy Howze I was told that a complete cleaning of the coils and fan motor would lower both my power usage and the monthly bill. I then told him that the unit had been professionally clean prior to this summers hot season. Tommy then told me that if the cleaning didn’t do the job he would reduce the cost of the replacement unit that I wanted by the amount of the bill. I agreed to let him do this and skeptically waited for my August 2011 electric bill, what did I have to lose? Well my bill was down by 30% and that was more than I had hope with a new unit. Thank you Dependable.