Last Updated: July 1, 2026
For a standard two-car concrete driveway (about 500 square feet), you need at least 2,500-3,000 PSI. A 1.5+ GPM (gallons per minute) flow rate matters just as much as PSI for cleaning speed. Budget around -250 for a good electric model that handles driveways well.
Choose electric if: You clean driveways, decks, cars, and patio furniture. Electric units are quieter, lighter, require zero maintenance (no oil changes), and cost -300.
Choose gas if: You need to clean large commercial areas, thick mold on siding, or do heavy-duty work daily. Gas units deliver 3,000+ PSI but cost -1,500, require maintenance, and produce exhaust fumes.
For 90% of homeowners, an electric pressure washer is the better choice.
Yes, but with caution. Use a 40-degree white nozzle (widest fan), keep the wand at least 24 inches away from the paint, and never spray directly at trim, badges, or gaps. For the paint itself, I recommend a garden hose and bucket method. Use the pressure washer only for wheels, tires, and undercarriage.
For vinyl siding, once per year in spring is sufficient. For brick or stucco, every 2-3 years. Clean when you notice visible mold, algae, or dirt buildup. Always spray downward on siding (never upward, which forces water behind the siding) and use a 25-40 degree nozzle.
PSI (pounds per square inch) measures water pressure - how hard the water hits. GPM (gallons per minute) measures water flow - how much water comes out. Both matter for cleaning power. The formula is Cleaning Units = PSI x GPM. A 2,000 PSI machine with 1.2 GPM cleans slower than a 1,800 PSI machine with 1.5 GPM because flow rate carries away dirt faster.
A surface cleaner is highly recommended for flat surfaces like driveways and patios. It provides even cleaning without streaks, uses less water, and is 3-5x faster than a standard wand. For irregular surfaces like decks and fences, a turbo nozzle is better.
If you live in a freezing climate, you must winterize your pressure washer to prevent cracked pumps:
Skipping this step is the #1 reason pressure washer pumps fail prematurely.
Get an electric model with a brushless motor. Gas ones are louder, heavier, and require maintenance. An electric unit with 1,900 PSI and 1.3 GPM costs about -. That is plenty for a driveway, deck, siding, and sidewalk. The Sun Joe SPX3000 is a popular choice at around .
With proper maintenance, a good electric pressure washer lasts 5-8 years. Gas models last 3-5 years due to engine wear. Factors that reduce lifespan include: freezing without winterizing, running dry, using wrong detergent, and storing outdoors in harsh weather.
Yes, but only detergent specifically designed for pressure washers. Regular dish soap creates excessive foam that can damage the pump. Use the soap injector or siphon tube on your machine. Apply detergent from bottom to top, let it dwell for 5-10 minutes, then rinse. Never let detergent dry on the surface.
Use a 40-degree white nozzle only. Hold the wand 18+ inches from the wood. Work along the grain, never against it. Keep the wand moving constantly - never pause on a spot. Use a specialized deck cleaner first, then rinse with low pressure. For older decks, consider hiring a professional to avoid gouging the wood.
If your question is not listed above, contact us and we will do our best to help. You can also browse our articles for detailed guides on pressure washer maintenance, buying advice, and cleaning techniques.