My 5L worked well for one year. Next season after about one month a pipe blew. Customer service was prompt, but suggested the problem was a frozen pipe. The unit had never been exposed to freezing temperatures. They ignored that and again suggested that I had let the unit freeze. They simply ignored the fact that i live in a climate that does not freeze. I am very frustrated that they will not stand behind their product. They ignored the warranty because THEY determined my unit froze in a climate that does not see freezing temperatures. That is why I'm offended and feel it's my responsibility to let fellow consumers know my rationale.