I went to Arizona Chimney and Air Ducts partly because they are reasonably price and already had good reviews. The guy was really wonderful and actually went above and beyond to help us get screen put on top of chimney. He noted we had an opening there and happened to have a piece of screen he could use and was able to put that on right then. This was the first time we had used the service but ware are actually getting ready to call again for them to check out one of our air ducts. The first time they were just checking on our chimney and cleaning it out, which is a safety thing. The main things are that they are reliable, well priced, and really clean. They clean the whole chimney out and there was no mess at all. They did a fabulous job. I would certainly recommend them, and I already have.