Choose the Right Pressure Washer Without the Guesswork
Clear spec comparisons, fitting compatibility guides, and free project calculators. We help you pick the right PSI, GPM, and accessories for your home without marketing fluff.
Quick Estimator
Instant PSI, GPM & Time Guidance
Simple Tools to Plan Your Pressure Washing
Quick calculators to match machine power to the job before you rent or buy.
Chemical Dilution Calculator
Calculate exact batch mixes and downstream draw ratios for SH bleach, heavy degreasers, acids, and detergents without damaging surfaces or plants.
Open Dilution ToolSurface Cleaner Sizer & Tiger Stripe Predictor
Match your pressure washer's GPM to the ideal surface cleaner diameter using the 4-inch-per-GPM standard and predict rotary tiger stripe risk instantly.
Open Sizer ToolHose Friction Loss & Pressure Drop Calculator
Calculate friction loss and true PSI at the spray gun across long hose runs. Diagnose downstream chemical injector failure caused by line back-pressure.
Open Pressure Drop ToolLatest Guides & Equipment Comparisons
Real specs, nozzle advice, and machine comparisons without marketing fluff.
Active 2.0 vs Kärcher K1700: Detailing Rig Comparison
Active 2.0 vs Karcher K1700 compared by a mechanical engineer. 2.0 GPM 5-piston pump vs 1.2 GPM 3-piston pump, foam cannon thickness, and garage setup.
M22 14mm vs 15mm: Why Pressure Washer Hoses Leak (And Fixes)
M22 14mm vs 15mm fittings compared by a mechanical engineer. Learn why a 1mm stem gap blows O-rings, how to identify your fitting, and the best conversion adapters.
Sun Joe SPX3000 vs Greenworks Pro 2300: Engineer's Comparison
Sun Joe SPX3000 vs Greenworks Pro 2300 compared by a mechanical engineer. Real working PSI, brushless vs universal motor, M22-14 vs 15mm fittings, and top pick.
5 Best Wall Mounted Pressure Washers (2026 Garage Rig Guide)
Expert comparison of the 5 best wall mounted pressure washers for garages and auto detailing. Includes garage plumbing setup (3/4" inlet), 20A wiring, and TSS switch analysis.
Can I Run a Pressure Washer With the Choke On? (Mechanic's Answer)
Can you run a pressure washer with the choke on? No. Learn the mechanical damage of rich running, spark plug fouling, cylinder wash, and how to fix lean surging.
Best Soap for Pressure Washers: Detergents & Cleaners Buying Guide
Find out the 3 best pressure washer soaps for safe and powerful cleaning, avoiding damage to your machine.
Standard Pressure Washer Nozzle Color Guide
Match your nozzle angle to the surface before pulling the trigger to prevent gouging, etching, or motor burnout.
| Color / Angle | Spray Pattern | Best Used For | Caution & Limits |
|---|---|---|---|
| Red (0°) | High-pressure pinpoint pencil jet | Stubborn concrete stains, baked-on mud clods, high-reach exterior spots | Will gouge wood, strip paint, and cut skin. Never use on vehicles or siding. |
| Yellow (15°) | Narrow chisel spray fan | Heavy stripping, rust removal, surface paint prep, oil grime on driveways | Keep back 12+ inches on masonry. High risk of cutting into soft wood or composite decks. |
| Green (25°) | General flushing medium fan | Driveways, brick walkways, patios, sidewalks, sweeping loose debris | Standard all-around cleaning tip. Keep a steady sweep distance to avoid visible stripe marks. |
| White (40°) | Wide gentle fan | Vinyl siding, stucco, windows, cars, outdoor furniture, painted wood | Safe for fragile surfaces. Lower impact pressure; ideal for washing down detergents. |
| Black (65°) | Low-pressure wide brass tip | Applying soap, detergents, and chemical soft-wash solutions | Cannot strip dirt; soap injector only. Low PSI drop triggers chemical siphoning. |
Our Testing & Editorial Standards
We provide clear, honest advice based on manufacturer user manuals, published engineering specs, and aggregate homeowner feedback. When you buy through our links, we may earn a small affiliate commission at no extra cost to you. No sponsored fluff—just the practical data homeowners and DIYers need to get the job done right.