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Water pumps

Choosing the right water pressure pump is crucial for the proper functioning of your pool filtration system. A quality electric water pump will optimise your filtration system.

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It is essential to have the right pump if you use hydraulic pool cleaners, waterfalls and accessories that require it. The filtration pump is responsible for absorbing water from the pool and sending it to the filtration system to be purified. For this reason, we must consider its power rating and check that it meets what the filter needs to function correctly.

What is the function of pool filtration pumps?

Pool filtration pumps move water through the filtration system. Water is drawn in through skimmers, the pool cleaner suction inlet and the drain, and sent to the filter. The filter (sand, cartridge, diatomite) retains impurities and the clean water is returned to the pool.

How to choose the right pool pump?

To choose the right pool pump, you need to calculate the flow rate required. As a guide, suppose we have a pool of 8 x 4 x 1.50m depth. The pool volume is 48 m³ (48,000 litres). We divide 48 m³ by 6 (filtration hours). The result is 8 m³/hour. Once we have this figure, it is advisable to apply a 20% increase for pressure losses. Thus, 8 m³/h x 20% gives 9.6 m³/h. Therefore, in this case we should choose a pump with a minimum flow rate of 9.6 m³/h.

Types of pool filtration pumps

Among the common characteristics of filtration pumps is power, which can be expressed in HP or kW with the following equivalences:

  • 1 kW = 1.34 HP
  • 1 HP = 0.74 kW

Flow rate is also common to all. Flow rate refers to the quantity of water the pump can absorb or filter per hour. Remember that all pool water must be filtered within a maximum of 6 hours.

Another common element is the pre-filter, which will be more or less voluminous depending on the pump. This pre-filter retains larger debris to avoid damaging the pump. Pumps also feature high flow rates for low pressure.

How much electricity does a pool pump use?

Pool pump electricity consumption is always a concern. To know the exact consumption, it is important to check the specifications of each pump.

Once you know the kW rating of the pump, you can multiply it by the number of hours it is used. This is usually between 4 and 8 hours per day. This way, you can calculate the electricity consumption of each pool pump model.

kW (of the pump) x Number of hours of use (usually between 4 and 8 h/day)