Don't they know that an ice machine is a cheaper way to make ice. That machine was ran without a filter. These so called filter change services are mostly a joke. Most of the people that run them are usually guys that could not cut it in the hvacr industry. They change filters for usually half of what anyone else can charge. Have you seen some of these guys. I wouldn't let them in my house. Some of the ones I have seen look like they are looking for there next fix. Although I am sure there must be some good companies. I ain't seen one yet.