I have cleaned just about everything except an exterior with mine. While it is a great tool with serious output for its size I would question its use as a primary exterior washing method. If you have not seen one in person you will be surprised at how small it is. The Hill Injection heats from cold to max pressure in 6-7 minutes, you can use it at 5 but an extra minute or two makes a difference.
I like using it on glass with the included sqeegie, it also works well just hitting the glass with a blast and wiping down with mf towel. Great on engines. I have Prius and Fusion Hybrids and was afraid to clean with other wet methods. Door jams and hinges are a breeze. Good on all fabric and carpet, echoeing Robert I stay clear of any intensive cleaning on leather.
In the house I used it last night to clear a bathroom sink drain.
While it looks like a piece of jewelry it is built like a tank. You will really enjoy its portability and speed to uptime. If you have a question or need accessories or supplies they are only a call away. :xyxthumbs: