Each has its own unique feature, which will make it easier for you to choose the right one for your needs. If you have to buy a pressure washer, try to buy one that has a brand that is known to be reliable and have received positive reviews. For pressure washers, examples of popular brands are Campbell, Hausfeld, and Karcher. You can use the soap attachment with a cleaning solution to get rid of grease and grime under your barbecue grill. Then, before the soap dries on the deck, wash it off with the high pressure washer. The high pressure will help remove stains and loosen or remove dirt on the patio wood deck. Just remember to spray the deck with the nozzle remaining a constant 12 to 14 inches away from the deck. Pressure washers can eject hot or cold water under high amounts of pressure and the power of it will force dirt, grime, grease, and other contaminants in your floor, wall, and on your roof and car out. Basically, pressure washer is a garden hose on steroids. It can even make a 30 year old brick wall look new again. This causes wear and tear on the pumps and its operational life will be shortened. On the other hand, you have the pressure washer with automatic shut down feature. If no water is coming out of the nozzle for 30 seconds because you are not pulling the trigger, the pump will automatically shut down. Then, when you squeeze the trigger, the pump will automatically turn on again to deliver more water and air pressure. For the output pressure, you may want to get a pressure washer that have an output pressure rating at 1500 psi or below. This is suitable for cleaning vehicles without causing damage. As for the output temperature, you have to choose one that offers super heated steam output. This means that the water temperature will be heated up to 330 degrees Fahrenheit. If you are going to operate in areas where drainage facilities are poor, you may want to select a machine that has a low flow rate. Whether you need a pressure washer to clean the walls of your house or you want to get one to clean your garage and get rid of the grease and grime stuck on the floor, you can be sure that the right pressure washer will be able to do the job easily and efficiently.