Tips for Buying a Pump

1.    What’s The Project

  • What is your application?
  • How many litres per minute?
  • What pressure is required to deliver the water you need?
  • What is the most efficient method of getting this to happen?

These are just a few of the questions you should be asking yourself when purchasing a pump. The value of the pump may only be a small consideration in the total system you may need. At Think Water we’ll ensure you get the optimum system for your application.

2.    Service

It’s unlikely that a quality pump will break down due to poor construction, however all pumps are designed to operate within certain parameters, which also includes the quality of the water. Some impurities like sand or high levels of calcium or magnesium can impact pump seals and parts.

As a mechanical device pumps need to be serviced and checked to ensure efficiency is maintained. This is very important in commercial situations where running costs can be substantial. The additional energy costs of running an inefficient pump can be huge and difficult to judge, until you get your power bill. Preventative maintenance from Think Water may only be a few hundred dollars. Think Water can offer a service program to suit your system.

3.    Design & Installation

Consideration needs to be given to the system design to get optimum performance from the pump and the other components; where the pump is located in relation to the source of water.  Pipe size valves and other fittings all play a significant part.

If using a tank, where is the tank located; is it buried or at ground level. This has a bearing on the type of pump selected to do the job.

4.    Protection From The Elements

Pumps are designed to have water move through them, not over them- unless it’s a submersible pump! If your pump is located outside, then exposure to the elements will reduce the life of your pump. A pump cover is an inexpensive way to protect your investment.

5.    Brand & Price

The brand of pump is a major consideration. Two pumps can look identical on the outside but vary considerably in the cost. However it’s the inside that counts; motor quality and design, impeller materials, the bearings, seals plus the R&D and design that goes into developing the pump all impact on the final price and more importantly the running costs for the volume of water moved. Is the pump serviceable and are spares readily available. At Think Water we only recommend quality, proven brands and we service what we sell. Period.

6.    Running Costs

It’s been mentioned before, whether you are running a petrol, diesel or an electric application, calculation of running costs are critical. Most customers look at price, not considering that the more efficient pump may costs thousands of dollars less during the lifetime of the pump, which maybe many, many years. Our experience in design will ensure you get and efficient system that uses less energy.

7.    Pressure Control Units

When a pressure control unit is attached to a pump there are less starts and stops. This device allows for a low flow of water through the unit compared with a pressure switch, which does not. This type of pump has an air tank. The power required to start a pump is 4 times that required to run it, so the less starts the less it will cost to run. This can save many hundreds or thousands of dollars over the life of the pump.

8.    Pump Type And Efficiency

Multistage pumps are usually more efficient than jet pumps and variable speed drive pumps are like inverter air conditioners. Multi-Stage pumps only use enough power to shift the required amount of water and start less frequently, saving energy and costs.

Power savings for an efficient pool pump with a variable speed drive can provide a payback within 4 years of operation.


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