I have done a lot of power washing and own a gas 1700-3000 psi and an electric 1700 psi from HF. The higher pressures are not good for siding or stucco, you can easily do damage with too much power. Unless you buy a good concrete cleaning plate you don’t need anymore than 1700 psi. In fact, the last couple of years I didn’t even use a PW to clean houses. Do a prewash of bleach water out of a $20.00 pump up sprayer. Use an 5 gal bucket and an extendable car wash brush with bleach water to brighten up downspouts and fencing. Spray off everything with a good strong hose tip.
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