I just want to give anyone who is considering this company a "heads up". It started out by us finding a vial on our door to send in a water sample to be tested. I assumed that it was the city that was doing this, but it turned out to be this water treatment company. After several persistent phone calls offering a $25 gift card to a local restaurant and no obligation (only to perform further tests on our water), we finally agreed to have a someone come out. The sales rep was friendly and very persuasive in showing us all the impurities in our water and talking about all of the companies that use their system (NASA, etc.) and it seemed like a good idea even though it would cost about $5,500 to have a whole house unit installed. I told the rep that I needed to sleep on it before I made a decision and he could contact me the next day. He did not seem too happy about this, but agreed. I asked him about the gift card and he said he didn't have any with him, but that it would be mailed to me. After talking this over with my wife, we decided to wait until next Fall to have it installed since we would be gone for most of the summer. When the rep called to set up a meeting time for later that day, I mentioned that we wanted to postpone the installation and he told me that meant that he could not give me the free 5 year supply of their soap products that was a part of this offer. That immediately sent up a red flag for me, since I don't believe in making fast decisions on purchases that are this expensive (I have had bad past experiences with this kind of high pressure sales). So I did some research online (I Googled "Great Lakes Water review"), and found a whole raft of complaints about the parent company, Rain Soft. They ranged from the system not working and having to pay for the repairs even though it was supposed to be under warranty, to how awful the soap products were (not getting things clean), to not receiving the promised gift, etc., etc. I actually had a hard time finding positive reviews for this outfit. When the rep called back again, I told him about this and cancelled the installation. He told me that their company couldn't be responsible for reviews from some other part of the country and that they had an A+ rating from the Better Business Bureau. I am surprised at this rating since I don't think of this kind of high pressure salesmanship as being a "better business" practice. It also seems to me that if Rain Soft were a truly reputable company, they would stand behind their subsidiaries and make sure that these problems were resolved. And, given what I have read, I am not expecting to receive the $25 gift card, but we'll see. So, for what it's worth, that was my experience, and I would just forewarn anyone considering dealing with this company to do their own research and beware. The water treatment product this company is offering may or may not be as wonderful as the salesman would have me believe, but with all of the negative reviews, for me it wasn't worth the risk especially given the high cost of the system.