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Pump inverters & how they work


Swimming pools are a great source of entertainment and relaxation, but they can also be costly to maintain. One of the biggest expenses associated with owning a pool is the cost of running the pump, which is responsible for circulating the water through the filter, heater, and other components. However, by using a pump inverter, it is possible to save money on your pool running costs.

In this blog post, we will take a closer look at pump inverters, explain how they work, show you an example of a cost breakdown, and how you can keep your pool running cost as low as possible!

What is a pump inverter?

A pump inverter is a device that allows you to control the speed at which the pump in your swimming pool is circulating water. The device changes the frequency of the power supplied to the pump, which controls the speed of the motor and the flow rate of the water in the pool. Controlling the speed of the pump, and the flow rate will result in better energy consumption and longevity of the pool components.

Pump inverter used to help save on pool running costs

Improved water quality

Variable speed technology enables pool water to be circulated at reduced flow rates at chosen times of the day resulting in improved efficiency of high-rate sand or glass media filters.


Energy efficient

Pump inverters dramatically reduce pool running costs by up to 60% for single-phase pumps up to 2hp.

Motor inverters using variable frequency technology have become widespread throughout the industry over the past few years. Recent developments have resulted in Inverters becoming increasingly popular in domestic swimming pools. Swimming pool pump
energy conservation is evolving, it’s now possible to reduce the running costs of your pool pump by as much as 60% simply by linking your existing pool circulation pump to an Inverter.

Swimming pool pumps invariably run at higher flow rates than necessary. A Pump Inverter enables you to control both pumps
flow rates and pump run times.

By simply connecting the pump inverter (via an RCD) to the mains supply in the plant room and wiring the circulation pump into the pump inverter. Installation typically takes less than 30 minutes.


How much will it save me?

The typical cost of running a 1hp pool pump continually for 1 month (30 days)

Energy consumption per month 732kWh
Price per kWh of electricity 25p per kWh

Monthly expenditure £183.00


Typical monthly running cost for the same pool with the same pump linked pump inverter

Energy consumption per month 281.03kWh
Price per kWh of electricity 25p per kWh

Monthly expenditure £70.25

Savings per month = £112.75!


How can I get one?

Give us a call!

We can offer you any advice and also give you all the latest offers we have on pump inverters.



The calculations shown are based on the following assumptions:
The pool pump is 1hp (0.746kW).
Output – 1.02kW Input – 73%
The illustrated calculation is based on Clever-Pool operating at the following parameters:
19 hours per day at 1,200rpm pump speed 173.91kWh per month
1 hour per day at 1,700rpm pool pump speed 17.63kWh per month
4 hours per day at 2,100rpm pool pump speed 89.50kWh per month
Figures may differ due to variable parameters, eg cost of kWh of energy, the efficiency of a pool circulation pump, etc. Above figures are based on a 30-day month.

All prices quoted include VAT



Let Alzach help you with your swimming pool maintenance

We offer professional swimming pool cleaning, servicing, and maintenance supplies. Additionally, our partners at Products4Pools supply equipment, spare parts, and supplies to keep your pool in top condition, no matter what the weather.
Talk to us today for advice and support about maintaining your swimming pool – call 0800 977 4966

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