All about water-to-water heat pumps

Heat pumps come in various forms and for different purposes. So which one best fits your heating requirements? Or do you also want to cool your house with it? And what about your domestic hot water in the kitchen and bathroom?

The purchase and installation of a heat pump

It is important to read up on the topic before you go ahead with purchasing a heat pump. And of course an installer can also offer good advice for your particular situation. Make sure you look for installer with plenty of experience in installing heat pumps. The installation of a heat pump that uses air as the source of heat usually takes just one day, whereas installing a heat pump that uses heat from the ground is a more complex job and can take several days. In either case, installation is not a do-it-yourself job.

System configuration

The choice of a suitable alternative to a central heating boiler also has consequences for your total heating system. Do you have underfloor heating or only radiators in the house? Everything must be properly coordinated and adjusted. This has an effect on the savings you will achieve and these can be greater if you also have solar panels or use a solar water heater. Whatever the case, all the elements of your system must fit together perfectly and work well together.

Water-to-water heat pumps

With heat pumps there is usually an indoor unit. This often looks like a central heating boiler, and may be available in a free-standing or wall hung unit. The water-to-water heat pump draws heat from a water source in the ground, which reaches a temperature between 7 and 12°C even in winter. Moreover, the temperature of the groundwater almost always remains constant. To be able to use the groundwater, you need a depth pump that pumps the water from the ground, and a discharge well into which the used groundwater ends up.


A water-water heat pump indoor unit is quite compact. Water is a medium with a very high storage capacity and good regeneration. You can also use the pure source water that is pumped up for all kinds of other water applications such as the toilet, washing machine, garden watering system, etc. 

Advantages and advantages of water-to-water heat pumps

A water-to-water heat pumps is the most cost-effective heat pump there is, because water manages to keep the temperature constant. However, it is less suitable for individual homes, because the disadvantage of the water-water heat pump system is that two deep wells have to be drilled. The capacity of the submersible pump also determines to what extent the heat pump system will deliver energy savings. Finally, bear in mind that the deeper the groundwater is, the more electricity will be required to pump the water. 

Do the heat pump check now to see if your house is already suitable for a heat pump and, if so, which type.