Professional Pressure Washing, Window Cleaning & Solar Panel Cleaning in Ontario, CA

For most homes in the Inland Empire, we recommend pressure washing your driveway once a year. Due to dust, heat, and vehicle oil buildup common in Ontario and surrounding areas, an annual pressure wash keeps your property looking clean and prevents long-term surface damage.

Professional pressure washing is safe for concrete driveways, brick, stucco, fences, patios, and most exterior surfaces when done correctly. At Knockout Cleaners, we adjust the water pressure based on the surface to avoid any damage.

Most residential pressure washing jobs take between 1 to 3 hours depending on the size of the area. Larger commercial properties may take longer. We always give you a time estimate upfront before starting.

Not necessarily. As long as we have access to the areas being cleaned and a water source, we can complete the job. Many of our Ontario and Inland Empire customers leave us to work while they are away.

We recommend professional window cleaning every 3 to 6 months for residential homes. Commercial properties with high foot traffic or street-facing windows benefit from monthly cleaning. Regular cleaning prevents hard water stains and mineral buildup common in the Inland Empire area.

Yes! Knockout Cleaners offers interior and exterior window cleaning for homes and businesses throughout Ontario, CA and the greater Inland Empire. We use streak-free professional cleaning solutions for crystal-clear results.

Yes. Hard water stains are very common in the Ontario and Inland Empire region due to the local water supply. Our professional window cleaners use specialized solutions to safely remove mineral deposits and restore your windows to like-new condition.

Absolutely. We safely clean standard glass, dual-pane windows, tinted windows, and skylights. Our team is trained to handle all window types without causing scratches or damage.

Dirty solar panels can lose up to 25% of their energy efficiency due to dust, bird droppings, and debris buildup. In Southern California's sunny climate, keeping your panels clean ensures maximum energy production and helps you get the best return on your solar investment.

We recommend cleaning your solar panels every 6 months in the Ontario and Inland Empire area. The dry, dusty climate means panels accumulate dirt quickly, reducing their efficiency. A bi-annual cleaning keeps them performing at their best year-round.

No. Professional solar panel cleaning using purified water and soft brushes — which is exactly what Knockout Cleaners uses — is safe and will not void your warranty. In fact, many manufacturers recommend regular professional cleaning to maintain warranty coverage.

No. We use purified, deionized water and soft brushes to clean solar panels. This chemical-free method is safe for your panels, your roof, and the environment, while still delivering a thorough, streak-free clean.