Al spent a lot of time with me on our initial discussion and answered several follow up questions for me via email. Brian then installed the water treatment system in one day and did an excellent, well thought out job. I had asked Al to promise to test the water after the installation. Brian came back day after installation and tested the water showing that water is in tip top condition. Please do not hesitate to have ProPlumbing install your water treatment system. It is unique to Al Vanden Heuvel.