If you’ve got a noticeable difference in pressure between your hot and cold water supplies at home then you may need to get a single impeller shower pump fitted. Salamander are a market leader in this field and their single impeller pumps are brilliant for boosting your hot or cold supplies. This selection is specifically for pumps with a pressure of less than 2.0 bar. This means you’ll get a small to medium boost to equal out whichever supply is weaker.