Installing a new shower pump in your bathroom

Showering can be incredibly frustrating if you suffer from low pressure in your home’s water mains supply. You have two options, either increase the size of the water supply pressure to your home, which is very costly, or install what’s called a shower pump. Fortunately, the second option is very affordable and can provide you the shower you have been dreaming of.

Are you planning a master bathroom remodel? Installing or replacing a shower pump may also be a good idea when you are installing a sophisticated shower system in a newly remodeled master bathroom. It would be a shame to do all of that work only to realize that the shower pressure is pretty lame.

We recommend that you have a licensed plumber do the installation. The most important step is determining the appropriate pump for the job. So we will first discuss the kinds of pumps available.

There are two main types of shower pump produced by Grundfos, a major manufacturer. The Grundfos Danube pumps are a low voltage super silent variety of pump. They are safe enough to be installed beneath your bath, and need at least 2-meter (6.6 feet) head of water to operate – this is the vertical distance between the cold-water storage tank and the shower pump.

Grundfos Danube 3 shower pumps               Grundfos Nile Regenerative Shower Pumps

The second group includes the Grundfos Nile range of regenerative pumps, a more general purpose pump which can function with just a one meter head of water. The Nile pump is designed to remove air more effectively, and has a low speed induction motor that will reset automatically to prevent overheating. See this short video on Grundfos shower pumps.


Be sure to consult a reputable distributor to select the best model for your particular situation. The better distributors like Online Pump Supplies will be happy to advise you or your plumber. Before selecting a pump, ask your plumber to measure the current water pressure of your home and provide this information to the distributor. Also indicate what water faucets or water jets are envisioned in the shower. Many pumps operate under specific water pressure levels so your distributor will need that info to advise you on the best pump.

Next, you need to work out where you are going to position your pump. The positioning is very important; you want to place the pump as close as possible to your hot and cold-water storage tanks. It is also best to ensure that it is in an easily accessible location, to allow for future checks and maintenance.

It’s also a good idea to make sure the piping that connects to your new pump is clean. Take extra care to connect the hot and cold water supply pipes and tanks to their counterparts on the pump. Labeling them with colored tape will help to reduce mistakes and rework. There is nothing worse than trying to find a connection in a poorly lit and tight space and then realize that the connections are wrong when you test the shower.

Take extra care to flush pipes before connecting them to the pump. Debris is your pump’s worst enemy. Then connect the requisite cold and hot water supply pipes to the pump. If you are not a licensed plumber make sure you know what you are doing. Some firms offer an installation service, which may be worth the extra cost.

Finally you have to prime the pump by disconnecting the electric supply and running water through it until it runs clear. The goal here is to eliminate any air from being trapped in the pump.

Knowledgeable specialists are available in the UK toll free at 0800 043 1111 or you may call them at 01925 761 120. For international orders or other information about Grundfos pumps contact Online Pump Supplies.