Poor shower performance may not necessarily be caused by your shower itself, sometimes it can be as simple as poor water pressure being delivered to it. There is an easy remedy to this and it comes in the form of compact pumps designed to boost both the hot and cold water to your shower. These plastic shower pumps are great if you’re on a budget. They’re just as powerful as brass pumps but with the added bonus of being a bit more economical to purchase. We split our range of plastic shower pumps into single and twin impeller models. Single impeller pumps are for either the hot or the cold feed whereas twin impeller pumps will serve both the hot and cold equally.