Expect nothing disappointing, the performance saw the purchase of very promising. Allderdings after installing the water ran-not out of the hose, but from the junction hose / boiler. Retighten the nut did not help. The qualitative execution of the screw was rather cheap, so that the existing seal the defect could not fix. Positive is worth mentioning that the HWW was very quiet. After I've just read the other reviews - too late, I regret to have ordered me a replacement unit. But hope die last.