I contacted several businesses for quotes on fixing my RO system. Dan responded quickly and gave me a very competitive quote. I chose Dan and I'm glad I did. He showed up right on time. And he allowed me to look over his shoulder and ask questions while he troubleshot and diagnosed the problem. He was quick and explained everything. He was very personable. He also found another problem I was unaware of and explained to me how to watch for it in the future. We'll be using Dan in the future for any RO or water-treatment problems. I strongly recommend Dan and Stasis.