Update 2026 – This is the technical guide to pressure washer parameters

If you want to understand how to correctly read technical data (pressure, flow rate, power, accessories), this guide is designed just for you. If you're looking for a practical overview of which pressure washer to use for home maintenance , with concrete examples and dedicated accessories, read our updated guide:

Which pressure washer do you really need for home maintenance?

Pressure washer: the solution for all your outdoor cleaning needs

Dinamitek guides you in choosing the most suitable pressure washer

With the warmer weather, cleaning outdoor spaces becomes a priority : terraces, patios, driveways, facades, fences, and garden furniture require targeted cleaning to remove dirt, moss, and encrustations. A pressure washer is the ideal tool for achieving quick, effective results while using up to 70% less water than traditional methods.

There are also professional solutions such as Tron reverse osmosis systems, which can be used with hydrokinetic accessories and are ideal for cleaning solar panels, windows, and smooth surfaces . These systems generate osmotic water and can operate at up to 70 bar with rotating brushes, offering a deep, streak-free clean.

How to choose a pressure washer: the essential technical parameters

Choosing the right machine depends on evaluating some key parameters. Here are the ones that really matter.

Flow rate (l/h)

This indicates how many liters of water are delivered per hour. A high flow rate allows for faster and more efficient work. However, flow rate alone is not enough : it must always be evaluated in conjunction with pressure.

Pressure (bar)

Measured in bars or atmospheres, it indicates how much the machine increases the water pressure compared to the domestic mains. High pressure is useful for removing stubborn dirt, but if combined with too low a flow rate , it does not guarantee satisfactory results . The two values must be proportionate.

Power (Watts)

Motor power affects both performance and energy consumption. For frequent use, a machine with at least 1.9 kW is recommended, while for professional use , 3 kW or more is recommended.

Weight and handling

A compact and lightweight pressure washer is easier to transport and use, especially on large surfaces or stairs. For the same performance, weight and size can make a difference.

Compatible accessories

The versatility of a pressure washer depends largely on the accessories available: lances, brushes, nozzles, floor cleaning kits, foamers, and pipe probes. With the right accessories, a single machine can cover multiple applications .

Usage Tips: How to Get the Most Out of Your Pressure Washer

Use a long, fully unrolled tube

A relaxed tube reduces the kickback generated when the trigger is released and allows the machine to work more smoothly and safely.

Understanding Engine Kickback

When you release the trigger, the engine automatically stops. This generates a kickback that can be mitigated by the long, unrolled hose, avoiding unnecessary stress on the machine.

How to choose the correct pressure

The more delicate the surface, the less pressure you need . It's always a good idea to test the pressure on a hidden spot to find the ideal level.

High pressure produces a powerful, precise, and pinpoint jet. Low pressure produces a wider, more uniform fan jet.

By combining the correct pressure with the right accessories, you can achieve excellent results on any surface.

Take advantage of the benefits of water, with Dinamitek here is the range of pressure washers

Want to discover all the practical applications of pressure washers for home maintenance?

Also read our updated guide to the Portotecnica G132 and G133 pressure washers.