The unit came with me to play fast (less than 24 hours between order and delivery with Amazon Prime). Following a low-pressure fitting. The appliance heats the water in a very short time on (I was really surprised) drop on the valve (which is normal for devices in this price range) so far I could also observe only briefly in the warm-up after removal of a lot of warm water.
In the "E" is the water still pretty hot (of course, is not a disadvantage of the device - but you can definitely still the temperature slightly lower rules).