I have well water that is inline prefiltered. The filtering does not take out minerals. I needed something to remove the minerals so i didnt have to buy a new coffee maker and boiler pot every couple of years. I used to clean them with vinegar or the purchased pot cleaners. This countertop distiller produces one gallon of water in an hour. I practiced with my electric boiler. Three times boiling the same water with cooling in between. Result was the stainless steel inside was clean and clear.Question: why didnt I get this sooner!