The pump delivers the water with good pressure and it is very quiet. The pressure switch works perfectly and provides as an additional function establishes a Trockenlaugschutz. But only but is great disadvantage of this HWW that the pump is not self, but this will also mentioned in the description. One must also not have the expectation that it is self-priming, not 10 centimeters sucks pump itself, the water must be present on the input side. In my case, the pump is powered by a well beaten, but this parallel with a self-priming pump, which in my house the water supply for the toilets and thus ensures the AT HWW also brings the water to the entrance. Technical information provided by the seller I would not necessarily trust, for example, I was told that the HWW does not work when the input side positioned a check valve. Supposedly this does not work with the pressure switch. I have a backflow preventer placed on the input side and fuinktioniert properly. So people, if water is always present at the pump inlet and the pump does not have to suck themselves, then this HWW is a good choice.
