They also do necessary repairs, when required. They are very good and show up on time every week. There have never been problems with our pool, being green and they do the chemicals, as well as cleaning. They also wash the filter, whenever it is supposed to be done. They are a little expensive than others, but you get a lot in return, through their job. They always let us know the problem and take our permission, to have it repaired. I like them and will use the same in future.