Most solar installations are roof-mounted, creating serious safety risks for homeowners attempting DIY cleaning. Beyond safety concerns, improper techniques can damage expensive equipment and void warranties. Pressure washers, abrasive materials, or incorrect cleaning solutions can scratch photovoltaic cells or damage protective coatings. These mistakes lead to costly repairs and reduced system lifespan—problems that far exceed professional cleaning costs. Professional cleaners have specialized equipment, safety training, and technical knowledge to clean effectively without damage. We also spot potential issues during service that untrained homeowners typically miss.