The service and install crew at WCA were very professional and did a great, very tidy, job of installing my Geothermal nearly 2.5 years ago. My biggest issue with WCA was with one of their sales guys that, to me, gave false information on how their warranty worked. I've since chatted with other individuals at WCA and am still a bit confused on how to fully guarantee the 15 year warranty (is it serviced twice per year and does it have to be by WCA or can other certified vendors also do the maintenance?) There was also an issue with "drain pans" for the hot water heaters that I had discussed with one of the guys when they came out to do the measurements which were not installed (I was told it would be $200 to install them but they really couldn't because they were behind schedule... so that was disappointing). However, that sales rep is no longer with the company, but is the primary reason I can't give them an "A" for this work. For my install, they did the "Vertizontal" which means they were basically the only company that could do an install in my typical suburban home (on a 1/3 acre lot). They were on time and completed the entire job in about a week. The ground where they did the major amount of digging has now fully settled and is not overly noticeable (it's about a 6'x8') area. I've recommended WCA to a few friends and one of them had WCA install a Geo-Thermal in their house too.