Cleaning — FAQ
Can I really get a quality gas pressure washer under $75?
True gas pressure washers under $75 don't exist—quality engines and pumps start around $200. Our 'under 75' rating measures value per dollar. The Westinghouse WPX3400 delivers commercial performance at residential pricing, earning a 75/100 value score.
What's more important: PSI or GPM?
For speed, prioritize GPM—it determines how much area you clean per minute. For deep cleaning, PSI matters more. The best balance is 3000+ PSI with 2.5+ GPM. The 4200 PSI/4.0 GPM unit excels at both but costs more upfront.
How much pressure do I need for concrete driveways?
Minimum 3000 PSI with 2.3 GPM removes surface dirt. For oil stains and mildew, 3400 PSI and 2.6 GPM is optimal. Avoid exceeding 3500 PSI on new concrete—it can etch the surface. Use a 25-degree nozzle and keep 6-inch distance.
What maintenance do gas pressure washers require?
Change pump oil after first 5 hours, then every 50 hours. Replace engine oil every 25 hours. Run stabilizer-treated fuel to prevent carburetor gumming. Flush system with clean water after each use. Check air filter monthly during heavy use.
Are electric pressure washers better than gas?
Electric units suit light-duty tasks (cars, patio furniture) with less noise and maintenance. Gas models deliver 3x the cleaning power for concrete, fences, and heavy grime. No electric unit matches the 4200 PSI/4.0 GPM of commercial gas washers.
Does hose length affect cleaning performance?
Every 50 feet of hose drops pressure 50-100 PSI. Standard 25-foot hoses maintain rated pressure. For two-story homes, use 50-foot hose but upgrade to 3600+ PSI to compensate. Always use 3/8-inch diameter hose for gas units to prevent flow restriction.
