The super heated water ejected by the pressure washer will eventually kill bacteria and other microscopic living organisms on the surface. So, with a hot water pressure washer, you will not only get to clean the surface more efficiently but also kill disease causing bacteria. If you have the cash for it, you might want to get a hot water pressure washer that also has a high pressure steam option. 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. Lastly, you have the heavy duty pressure washers, which are rated to produce water pressure of 3000psi or more. This works well in removing stubborn stains and it can even strip away paint. The GPM or gallons per minute is another factor that you have to consider when buying a pressure washer. Normally, you will find that as the pressure increase the GPM will also increase. Now, when it comes to cleaning surfaces, you will find that pressure washer is one of those power tools that you will want in order to get the job done. With a pressure washer, it will take you less time to clean an entire patio or driveway than by doing it with a conventional brush, a garden hose, and a bucket full of soapy water. And, cleaning a garage floor filled with grease and grime can be so difficult that cleaning it the old way will only let you spend a lot of time cleaning while accomplishing very little. If you need to use degreasing chemicals, it is advisable that you use green chemicals. Green chemicals can really help clean off greasy or oily deposits stuck in your garage floor. Portable pressure washers are available in either gas or electric powered models. With the numerous types of units available, choosing one can be a challenge. So, here is a guide on how to choose the right portable pressure washer for your needs. The first thing that you have to consider is the amount of power that the portable pressure washer produces.