you need the Simpson PowerShot gas pressure washer. This beast delivers a whopping 4,000 PSI at 3.5 GPM. The low-maintenance Honda GX270 engine means optimum performance, and the PowerBoost ...

One of the best things about this surface cleaner is its compatibility with gas/electric pressure washers from 2,000 PSI 1.8 GPM up to 4,000 PSI 8 GPM. It comes with 2 adapters for connection to 3 ...

Since gas-powered pressure washers tend to be more powerful and produce a higher PSI than electric ones, a gas-powered model will work best. But they can be more expensive. CNET tested ...