Phil Richion was on time and ready to go to work. He introduced himself and I showed him what needed to be done. Phil went up on the roof and chaulked around the roof stack to make sure there was no leaks coming from the roof to the inside of the furnace where Mike had noticed there was water dripping from the roof flange area when he was here working on the Air Purifier. Phil told me there was a pretty wide hap so he put everything back in place on the roof and then chaulked it. Then he came down and put a roof flange inside the closet on the ceiling which there was not one there at the time. Thanks Phil for your dedicated and professional hard work you do to keep people or customers like me happy and not to worry. Phil is a dedicated employee to A-1 and he should be recognized for a job well done. My rating is well over 5 stars.