Circulation pump

What does a circulation pump do?

A circulation pump, also known as a circulating pump or a circulator pump, is a device that circulates hot water through a central heating or piping system. This ensures that hot water is distributed efficiently so that you do not need to wait long for hot water to come from the tap, thereby reducing water consumption as well as waiting time. This is highly beneficial for both the environment and your water bill as well as for yourself.

Where are circulating pumps used?

Circulating pumps are used for two purposes in the home: the central heating system and the hot water system.

• The central heating system: To circulate hot water from the boiler to the radiators or the underfloor heating system;

• The hot water system: to make sure you get hot water from the tap without delay.

A third application involves industrial processes where a continuous circulation of fluids is needed, such as in cooling systems or chemical processes.

How does a circulation pump work?

A circulation pump has just one task: to circulate water in a closed circuit such as in a central heating system or hot water pipes.

Circulation pump for a central heating system

A circulating pump used for central heating (central heating pump) transfers hot water from the boiler throughout the central heating system to, for example, radiators or an underfloor heating system. This ensures that the hot water is distributed quickly and evenly throughout the house.

How it works:

• Water flow: The water is heated in the boiler and then the circulating pump pushes it through the system.

• Heat transfer: The hot water flows through the pipes to the radiators, which then release heat to the rooms. Next, the cooled water returns to the boiler to be reheated.

• Efficiency: The pump keeps the water moving constantly, preventing some radiators from becoming colder than others. This helps to heat the house quickly and evenly.

Hot water circulation pump

A hot water circulating pump is used to make sure that hot water is readily available from taps and in the shower. This way, you do not need to wait for the water to heat up once you turn on the tap.

How it works:

• Continuous circulation: The pump ensures that hot water is constantly moving within a closed circuit. This keeps the water in the pipes warm.

• Hot water readily available: As soon as you turn on the tap, hot water comes out immediately because it is already circulating through the pipes.

• Saving: This saves water because you do not need to first let cold water run.

Both models improve comfort in the home by heating the house evenly and efficiently and making hot water readily available.

Why do I need a circulator pump?

A circulator pump is important for an efficient and consistent supply of water in a heating or hot water system. Without a pump, the system would rely on natural circulation. In that case:

• When the tap or shower is used: Before getting hot water from the tap, it would need to run for a while because the cold water in the pipes would first need to drain away.

• Heating radiators: The radiators in the house would not heat up at the same time, leaving some rooms cold while others are already at the desired temperature.

• Underfloor heating: With an underfloor heating system, some parts of the floor might feel warm while others would remain cold because the hot water is not circulating evenly.

The pump ensures a quick and even heat distribution, which means less energy is wasted and comfort is improved.

What are the advantages of a circulator pump?

New circulation pumps, such as DAB Evosta pumps, are fitted with an integrated speed controller, which automatically controls its rotational speed, and does not restrict the pump to the three speeds at which conventional pumps run. This ensures an average saving of 70% in annual energy costs. It makes it even more interesting to look for an economical circulation pump.

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