Sometimes when looking at pressure cleaners you can find there is a large range to choose from. Choosing what machine is right for the application you want is very important, so the more information you’re armed with when purchasing, the better.

First of all water flow (referred to as liters per minute or LPM) that the machine pumps is one of the most important things to look at. The reason for this is the more liters per minute govern the time it takes to do the job, for example using a garden hose compared to a fire hose for washing down. Therefore the time you want to take to do the job is governed by the liters per minute the pressure washer pumps.

The higher water flow has a better cleaning effect and end result because the water is the actual element that cleans. It is a common belief in the market that the bigger the pressure the better the machine is and the better cleaning performance is achieved, however this simply is not the case. Pressure cleaners delivering 10 liters of water per minute at an operating pressure of 1600 PSI will clean much better and quicker and achieve a much better result than a machine delivering 7 liters a minute at 2000 PSI. So this goes to show the water flow rate is an integral element to consider when purchasing a pressure cleaner.

The second thing to look at is pressure which is needed to remove whatever substance you are trying to clean e.g dirt, grease, mould. Whilst we’ve talked about flow rate being important, it is the combination of flow rate and pressure which gives you the results you are wanting. A pressure cleaner delivering a flowrate of 10 liters per minute at 1500 PSI will not clean as well as pressure cleaners delivering 10 liters at 2000 PSI which is different again to the previously mentioned example machine delivering a flowrate of 7 liters at 2000 PSI.

The next thing to consider is how much work you have for the pressure washer for example cleaning around the house car and boat or in a business using the pressure washer three or four hours a day. This is important because when looking at the pressure cleaners there are a lot of differences in construction.

Most machines are manufactured using one of two types of motors. There is the brush motor and the induction motor. Brush motors are found in cleaners which should be used for light application and not be run for hours on end. If heavy application and usage hours are what is required, the induction motor is a must as its built for robust usage.

Pump construction should also be considered when looking at machines. There are generally three different types of pump constructions found within the industry.
Constructions to consider are

Motor type and size e.g brush motor or induction motor
Brush motor for small domestic use
Induction motor for more heavier usage e.g large concrete areas and industrial use

Pump construction
Fibre anti lime – light domestic use
Alluminium – heavier usage
Brass – industrial

Be sure to buy the right machine for the right application not just on price.


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