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What is a Circulation Pump

A Circulation Pump is the heart of your Swimming Pool’s Filtration System providing suction to bring the water in from the Pool, and pressure to keep the water moving through the various pieces of equipment within the system. Without a Pump, the water cannot circulate.

How a Circulation Pump works

The Pump is made up of many parts, the main being the Motor, Impellor and Strainer Basket (Pump Basket). Water is drawn in from the Skimmers and Main Drain and enters the Strainer Basket where any debris is collected before entering the Pump itself. The basket should be checked and emptied regularly to prevent clogging and maintain good water flow.  The impellor creates pressure to push the water through the Pump and Filter and any other pieces of equipment, and then back into the Pool via the Return.

Depending on the set up of your Pool, the Pump can also be used to operate an automatic pool cleaner or release bubbles via massage nozzles.  

Key factors when choosing a Pool Pump

Your choice of Pool Pump will ultimately depend on the size and set up of your Pool.  A small above-ground pool isn’t going to need as heavy duty a Pump as a large in-ground Pool. If you are only using your Pool for a short time, a fairly basic Pump model should suffice, however, if you are expecting to run your Pump all year round and serving a heated Pool, you will need a higher end, reliable model. It is always good to choose a self-priming Pump equipped with a pre-filter as it can provide a longer life span. Factors to consider;

  • Brand - It’s always good to choose a trusted manufacturer that has been in the business for several years and has a variety of models and sizes to choose from. There is a wide price range for Pool Pumps with the most expensive being the variable speed models. Although initially it may seem cost effective to go with the cheap option from a lesser known brand, it’s worth thinking about the long term and should your Pump go wrong and need parts replacing, will they be easily available? Or will you need to pay out for a replacement Pump?
  • Compatibility - If you have a Saltwater Pool and use Salt as a sanitiser, you will need to check the Pump is compatible with saltwater. Another thing to consider is your Filter, whether it’s a Sand Filter, Cartridge Filter or a different type, it must also be compatible with the Pump.
  • Noise level - For some, the noise level can be important if it’s installed near the Pool or in another area used for socialising.
  • Maximum Flow produced – The Volume Flow Rate (capacity) is the volume of water that travels through the Pump at any given time and is measured in gallons per minute or GPM for short. To preserve good quality of water, the filtration cycle must be capable of processing and filtering all the water in the Pool in under 6 hours, 4 hours being optimum. The flow rate required depends on the characteristics of the Pool, with various factors warranting additional capacity such as;
  • Piping layout – the more bends in the layout, the more the flow of water is resisted.
  • Distance between Pool and Plant Room – the further it is the more powerful the Pump needs to be.
  • Pump height compared to Skimmers – just like increasing the distance, the Pump will require more power to push water uphill.

If you need more information or help finding the right Pool Pump for you, give us a call.