I've been using this Vevor (aka Mophorn) pure water distiller for 10 months, running it at least once a day and often two or more times a day, 7 days a week. It's performed well and continues to provide a good quality distilled water (see below) with regular maintenance. Suggestions (lessons learned) 1) Do not run it dry. i.e. Do not let it run until the automatic shutoff turns it off. It takes roughly 4 hours to distill about 1 gal. of water. So, I have the unit on one of those inexpensive wall outlet timers set to shut it off after about 3 1/2 hours. This way the 'minerals & impurities' do not get \"burnt on\" the bottom so it's easier to clean and doesn't 'pit' the stainless steel. Personally, I disconnect the power cord from the wall timer to the unit as soon as I notice it has shut off. [Suggest you experiment with the 'time' if you have \"Hard\" water. You may want to shorten the time to 3 hours, producing less distilled water but 'saving' the units bottom from being as built up.] 2) After the distiller has cooled for at least 30 to 45 minutes, disconnect the plug from the upper to the lower unit, take off the condensing unit (top) with care as hot steam may still come out and hot water clinging to the unit will 'spill off' as soon as you tilt it. Set the top it aside and pour the leftover water from the distilling unit (bottom). Carefully because it will still be hot, wipe out both top and bottom with a soft cloth or paper towel. Take care when wiping off the upper unit being careful around the vent cover that the water vapor goes through to the condensing coil. Be sure to gently wipe off the soft seal on the top unit to keep it clean. Set both parts (top & bottom) on a towel or over the edge of a sink to dry being careful not to ding or damage the edges. Part of the reason for allowing the units (top & bottom) to dry at this point is to let them cool. If you are in a hurry to produce another 'batch' of distilled water, I suggest you let the unit cool for at