When looking to purchase a pressure cleaner, you can find that there is many different types and sizes 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.

The first thing to look at is the water flow (referred to as liters per minute or LPM) the machine pumps and this is very important. 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. This is why the liters per minute (or LPM) is so important.

The higher the water flow the better cleaning effect and end result you will get as water is the element that actually does the cleaning. 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 a lot better in less time while achieving greater results 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 water flowrate is paramount in ones consideration of a pressure cleaner, it is the combination of flowrate and pressure which gives you the better cleaning result. 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 a cleaner delivering a flowrate of 7 liters at 2000 PSI.

The next consideration is how much the pressure washer will be used. Will it be used to clean around the house, car or boat or will it be used in a business environment where it is used for 3 to 4 hours a day? This is important because when looking at the pressure cleaners there are a lot of differences in construction.

Typically, there are two types of motors which are used on most machines. There is the brush motor and the induction motor. Brush motors are generally found in smaller machines which suit light application use and should only be used for small periods at a time. If heavy application and usage hours are what is required, the induction motor is a must as its built for robust usage.

Pump construction is another that should be looked at closely. 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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