A twin impeller shower pump is designed specifically to boost the pressure of both your hot and cold water supplies. One impeller drives the cold side and the other impeller drives the hot side, providing equal pressure for both supplies. Salamander do a number of twin impeller pumps so we’ve broken them down into categories to make it easier to find what you need. Under 2.0 bar will provide you with a small to medium boost in pressure while over 2.0 bar will considerably up it.
