"John, I just wanted to take this opportunity to thank you and your folks for the good job they did in cleaning our Fin Fans. A total of 310 fans were cleaned and all the work was done safely and without the slightest incident. Since our fans were pretty dirty prior to cleaning, we saw a substantial benefit from the work you did. In fact, our calculations show that the cleaning paid out in less than a month! Please pass along our thanks once again to Chad and the rest of the crew for the great work they did."