The initial consult was great. The salesman was knowledgeable and friendly and straightforward, even tried to talk us out of the more expensive "all-season" option. We got it anyway because it had vinyl siding as opposed to metal. The installation went well at every stage, from permits to cement foundation to construction. The installers of the room were quick but thorough. They tolerated my questions and let me watch the process as I just found it interesting to see how they build those patio rooms. Shortly after the job was finished I broke out one of the windows with a rock while using a weedeater so we got to test out the warranty really soon. As promised, they replaced the entire sliding window (it had to be ordered) at no cost to us, though after 2 years from completion they charge a "nominal trip charge". Most recently (February, 2010), the heating and cooling unit died but was not covered by Champion's warranty. They said they would install a new one if we bought it or had it replaced under Whirpool's warranty (which it wasn't after 1 year), or could install a new PTAC unit like hotels have that would be quieter and easier to maintain for about $2000. That is probably a reasonable charge, but after spending $25000 on the room in the first place, we felt it excessive to be paying for new heating and cooling in less than 3 years.