The effectiveness of a pressure washer is determined by two main ratings:

Measures the cleaning force. Higher PSI (2,000–3,000+) is needed for stubborn stains on concrete or brick.

Measures the water flow volume. Higher GPM allows you to clean larger areas faster.

Buying an electric pressure washer is often the smarter choice for homeowners who prioritize ease of use, lower maintenance, and quieter operation compared to gas models. While they typically offer less raw power than gas units, modern electric models have significantly narrowed the performance gap, making them highly effective for cleaning cars, patios, and siding.

Calculated as PSI × GPM , this is the truest measure of overall cleaning speed. Cleaning Task Recommended PSI Light Duty (Cars, furniture, windows) 1,300–2,000 Medium Duty (Siding, fences, decks) 2,000–2,800 Heavy Duty (Driveways, paint stripping) 2,900–3,300+ Top Electric Pressure Washer Recommendations (2026) 6 Best Pressure Washer 2026