Which pump should you use?

Find out how to identify the right pump for every job.

With so many different types of pumps available on the market, it’s not always easy to identify the right one for your application.

In this module, we’re going to take you through a variety of applications in a normal domestic residence and explain which type of pump you should consider for these applications.

Before we start, however, it is important to underline that pumping laws and legislations vary from country to country, so some of the examples in this module may not be allowed in your region. Now, let’s get started.

First up, there’s cold water boosting.

This is used when the main water supply provides insufficient or no pressure. When this happens, you will need a pump that can supply the required flow and pressure.

A small pressure booster – such as the Grundfos SCALA2 – will do the trick. However, if your water supply comes from a borehole, you will need a submersible pump such as the Grundfos SQ.

Next, rainwater reuse. Collecting, storing and reusing rainwater is a great way to conserve water and reduce the water and energy consumption of the homeowner. It can be used for garden irrigation, toilet flushing, washing machines and car washing – in other words, it is not potable water. A Grundfos SB or SBA submersible pump is particularly suited for rainwater tanks.

Underground tanks and above ground tanks offer a number of possible pump solutions including jet pumps, submersible pumps and self-priming multi-stage pumps.

Jet pumps offer excellent suction of up to 8 metres. They are self-priming, and their robust design makes them highly durable. A prime example of a jet pump is the Grundfos JP jet pump.

Submersible pumps, on the other hand, are more or less silent. And as they are placed in the underground tank, they’re out of sight as well. Grundfos offers a number of submersible pumps, including the aforementioned SQ and SB.

A self-priming multi-stage pump offers a good combination between efficiency and low noise. The Grundfos CM Booster Self-Priming is an ideal example of a self-priming multi-stage pump.

Now, we all know what it feels like to wait for the water to get hot in the shower. With a hot water recirculation pump, you can bypass this issue, providing the homeowner with instant hot water. Hot water recirculation pumps require neither high pressure nor high flow, and they’re pretty compact as well. The Grundfos ALPHA and COMFORT ranges are great for hot water recirculation systems.

Finally, there’s wastewater. Many people believe that domestic wastewater just disappears by itself. And it most cases, it does. However, if flooding occurs, you need to do something about it. In order to manage and remove any excess wastewater, you’ll need a domestic lifting station or a drainage pump.

The Grundfos SOLOLIFT range of lifting stations and the Grundfos Unilift range of drainage pumps offer ideal solutions to get the job done.

That covers our basic training module on pumps and applications. Make sure to check out the rest of our courses in Grundfos ECADEMY or head back to our website to learn much more about our solutions and applications. 

Course overview

Modules: 3
Completion time
Completion time: 13 minutes
Difficulty level
Difficulty level: Basic