Little difference in this electric 2100psi washer compared to our gas powered 2200psi machine. The gas powered washer pushes out another half gallon of water per minute which in some instances could enhance the cleaning process. Used the Westinghouse electric for over an hour cleaning a deck and adjoining brick and concrete walkway. What we really appreciated was the quietness of the electric Westinghouse washer when spraying and then when trigger is released to stop spraying, the motor shuts off completely ("Total Stop System") and goes into standby mode awaiting the next trigger activation. Purchased additional 50' hose and did not notice a decrease in pressure compared to the 20' hose supplied with the machine.
I've had this pressure washer for about a month and it has been a marked improvement over my previous machine. Solid construction, great reach on both cord and hose. I am able to actually clean the overhead cross members on my pool screen without a ladder (previously unable to do so).