For example, if you ever tried to remove the grease or oil that leaked from your car on your garage s floor, then you know that this kind of job is very difficult to do. By the end of the day, the stain that the oil left behind will still be there. Also, you know how you hate washing your car or cleaning your backyard patio to get ready for barbecue season. Also, you should do this with the high pressure spray and a 25 degree nozzle. When washing your house with a pressure washer, always keep your distance from the house. You also need to maintain a constant distance of 12 to 14 inches between the nozzle and the house. You should also keep in mind that you may damage your mortar joints with a high pressure washer. 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. Also, get a pressure washer that has an interchangeable nozzle, which will provide you with greater cleaning flexibility. You can also buy one of your own if you think you really need one. So, here are some facts about pressure washers. Basically, pressure washers have an engine which leads directly to the pump. It also has a high pressure pipe and is usually equipped with a high pressure hose with a trigger nozzle. You simply use pressure washer just like a regular garden hose. IT can also produce super heated steam with temperatures reaching 330 degrees Fahrenheit. If you are getting a high pressure washer, you should get one with water heating feature and also one that can eject water with a maximum of 3000 pounds per square inch of pressure. It should also have a maximum of flow rate of 5 gallons per minute. You will also need to use soap or detergents as well as chemical degreasers in order for you to make the job a little bit easier. The problem with chemical degreasers is that they are very dangerous. In fact, you should avoid as much skin contact possible whenever you use chemical degreasers. Also, you will never avoid inhaling the harmful and toxic fumes that chemical degreasers emit.