The John Deere company sells four different lines of pressure washers: the homeowner/residential series, the premium series, the agricultural/commercial series and the Gatorpal series. For typical pressure washing jobs in a residential home, the 2700 PSI HR-2700GH is an affordable machine that has excellent power in its 187cc Honda engine.
For more advanced or difficult pressure washing jobs, the premium medium-duty series of John Deere washers may be more appropriate. These pressure washers are more expensive, but several have engines that reach over 400cc and exert forces of over 3000 pounds per square inch. The Gatorpal is another interesting, albeit expensive, product capable of fitting into the John Deere Gator tractor and cleaning in remote places.