To my surprise, the owner actually made a sales call to my home the day after July 4th. There was no question that after his presentation, I was going to use this company. EVERYTHING he said and promised was fulfilled. His staff did a great job and left my home as they found it...clean. I waited a month to write this...the impact of both the R-60 insulation and the solar fan have been quite impressive. You won't go wrong choosing this company.