Top 10 Things Every Homeowner With a Pressure Washer Should Know

1. Safety Comes First

A pressure washer is convenient, but mistakes can injure people and damage property. Wear the protection your manual requires, including eye protection. Keep children, pets and bystanders away; never direct the spray at anyone. Test the GFCI on electric equipment and keep connections away from standing water.

Gasoline-powered machines belong outdoors, never in a garage—even with the door open. CDC says to keep them at least 20 feet from windows, doors and vents. A high-pressure spray wound can look minor: seek medical attention promptly; call 911 when emergency help is needed.

Source 1 · Source 2

2. Match the Pressure and Nozzle to the Surface

There is no pressure range that is automatically safe for every driveway, siding panel or painted surface. Identify the material, condition and any coating first. Use its care instructions together with the equipment manual. If either excludes the proposed method, choose another approach.

Source 2 · Source 3

3. Use the Right Nozzle

Choose by the nozzle specifications and approved application, not color alone. A wider fan is not a guarantee against damage. Follow the shutdown and pressure-release procedure before changing attachments, secure the connection, and test an approved method in an inconspicuous area.

Source 2 · Source 3

4. Pre-Treat Heavily Soiled Areas

Only use a cleaner compatible with both the surface and the machine. Follow its dilution, application and dwell instructions; do not mix cleaning chemicals. Product instructions differ: Simple Green's cited siding cleaner must not dry before rinsing, while Wet & Forget's ready-to-use outdoor cleaner is a different, no-rinse product. Do not swap their procedures.

Source 2 · Source 3 · Source 6 · Source 7

5. Protect Plants and Landscaping

Plan protection around the actual product and its label. For example, Simple Green's cited siding-cleaner directions call for watering plants before and after use. That is a product-specific instruction, not proof that every cleaner is harmless to landscaping. Avoid uncontrolled overspray.

Source 3

6. Plan Your Passes and Keep Moving

Plan the application and rinse sequence from the product's directions. Simple Green's cited vertical-surface directions call for applying from the bottom upward and rinsing downward. Follow the approved sequence and keep water from being driven behind siding or shingles.

Source 3

7. Maintain the Correct Distance

Do not adopt a fixed 18- or 24-inch rule for every job. Use the distance specified for the actual machine, attachment and surface. If you cannot find compatible instructions, stop and ask the manufacturer instead of moving closer until a stain disappears.

Source 2

8. Know What You Should Not Pressure Wash

Treat electrical components, fragile finishes, loose coatings and unidentified surfaces as reasons to stop and assess. ARMA advises against pressure washing asphalt shingles or scrubbing away their protective granules, and recommends trained professional help. Before disturbing paint on a pre-1978 U.S. home, investigate possible lead hazards using EPA's guidance.

Source 1 · Source 4 · Source 5

9. Maintain Your Machine

Inspect hoses and connections, and follow the specified cleaning, shutdown and storage steps. Pump-oil requirements vary: the cited SIMPSON MS60850 manual describes its pump as maintenance-free. Do not borrow another model's service schedule or chemical-flushing procedure; check your own machine's requirements, including freeze protection.