And, if you have a pressure washer, you might want to know how to maintain it because this is also a machine subjected to wear and tear. Ill-maintained pressure washers will tend to reduce its effectiveness over time and it will also compromise safety of the user as well as the people around it. With proper care and maintenance, you will be able to keep your pressure washer in good working condition and also make it last for many years and allow you to keep on doing those cleaning jobs efficiently and effectively. However, if you are planning on using the unit for cleaning spilled oil or grease, the heavy duty model with hot water capability should be your choice. For example, if you own a car repair shop, you will work with grease, oil and other materials that can be very hard to remove from the floor. Hot water pressure washers will soften the stain and wash it off easily whereas cold water pressure washers will only make the job of cleaning a lot more difficult as it will produce a hard and waxy substance that will be a nightmare to remove. The metal body of the vehicle is also hard and sturdy but if you use too much pressure, the paint can be damaged. This is why you have to get a special type of pressure washer when you plan on using it for auto detailing. It should be able to clean all types of surfaces on a vehicle without causing damage. So, to start washing your patio wood deck, you may want to start by removing all the patio furniture. You may also want to remove your grill from the area you need to clean as well as all the plants. The windows as well as light fixtures should also be covered with tarp. Now that you prepared the area for cleaning with pressure washer, the next step is to start the pressure washer can blast away the dirt, grease, and grime. This force breaks up the dirt on the surface. The GPM is also another thing that you have to take a look at. GPM is short for gallons per minute. This indicates how much water comes out the washer per minute. Get a pressure washer that has at least 3000 PSI of force and 3 GPM. This will let you clean more efficiently and quicker than any other unit that has less. When working with pressure washers, you should wear goggles or blast shield, boots, coveralls or raincoat, and ear plugs. If you are going to use the pressure washer with cleaning agents or chemicals, you might want to consider using a reliable mask, such as a gas mask. This will prevent you from inhaling the toxic fumes that cleaning chemicals emit.