Doing so will eventually transform the greasy deposits in to hard and waxy clumps, which are far more difficult to clean off. This is why you need to get a pressure washer that ejects water at a very high pressure. It should also have a high flow rate. 3 gallons per minute is recommended but you can always go for more. On the other hand, if you use hot water pressure washer, the heated water will soften the grease and even melt the ones that have hardened on the surface. The pressure will simply blast and wash the grease away. This means that hot water pressure washers are perfect for cleaning garages where the floors are almost certainly covered in grease and oil from the car. Well, you will find that pressure washers are the ultimate cleaning tool that you will ever use. For starters, you can use pressure washers to wash your car, truck or even RVs. In fact, most bus companies use pressure washers to wash the buses because it s a lot more efficient in cleaning than manually scrubbing and wiping it. You have to get the one that is designed to have features that will do the job well. It should provide you with super hot steam temperature, high flow rates and also high pressure levels. Having this kind of pressure washer will let you easily get unmatched degreasing results, which will eventually make the area you clean look like brand new. It is measured in PSI. The amount of PSI you should get for a pressure washer should at least be 2000PSI. This will ensure that the force will be strong enough to loosen dirt. You should also get a pressure washer that expels water for at least 2 gallons per minute or GPL. These are the things that you should look for in a pressure washer when you are planning to clean the exterior of your house. 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.