A pressure washer is a machine mainly used for cleaning purposes. The core principle is the use of water pressure through a powerful jet to clean dirt, grease etc. To make it more effective chemicals or detergents will be mixed with the water. Even though widely used for commercial and industrial purposes, this device is a very effective cleaning machine for domestic use also. Periodical cleaning will be easier in homes and small offices if the pressure washer is utilized. It is a very convenient option for cleaning cars, walls, road surfaces, grills and areas where oily dirt or grime will be accumulated. It is not equipment that is used for daily cleaning purposes and therefore most of the people hire the machine whenever necessity arises. A pressure washer is essential equipment for commercial and industrial uses.

This equipment consists of a motor, pressure hose and a trigger gun. Different types of nozzles are attached to the trigger gun depending on the purposes. With adequate water supply, the jets should be adjusted and targeted on the object or area which is to be cleaned. The water pressure will be above ten times powerful than the ordinary garden hose and therefore the user should exercise utmost caution while using the machine. It can cause serious injuries if not used properly. The user should follow the instructions contained in the manuals regarding safety.

There are compact models as well as heavy duty pressure washers available in the market. For domestic purposes compact models which can offer 1200 to 1350 psi pressure will be enough. Depending on the rigorousness or intensity of the job, more powerful equipment should be used. Generally for cleaning large surfaces with stubborn crust of oily grime, a pressure up to 3500psi will have to be used. 

Pressure washers working on electricity and gas pressure washers are available. Electrically operated units are used for domestic purposes. Gasoline based machines will emit carbon monoxide causing health hazards. Electrical pressure washers are environment friendly. Certain types of pressure washers are capable to heat the water to be used for cleaning. For intensive cleaning, specific nozzles are to be used. Skilled users will be able to manage the angles of the jets to increase surface pressure. Targeting the cleaning spot with straight jet will have powerful impact than angular application. Many accessories to enhance the quality of work are available. The dealers will be able to guide the users regarding the appropriate accessories and their applications.

It is already mentioned that the pressure washer is a facility used for occasional cleaning and not for daily use. This is the reason why most of the home makers prefer to hire the machine rather than buying it. However for greater convenience, if it is purchased for domestic use the consumer should take care to maintain the machine properly. It should be cleaned, lubricated and protected from rain, snow and direct sunlight. The expensive machinery should be carefully maintained to enhance the durability.