Stop loosing MONEY and protect your investment! H2O Pressure King recommends cleaning your system at least twice a year. Doing so keeps your investment in tip top shape to ensure better efficiency and cost savings for the future. On average you lose up to 30% of efficiency per year. Cleaning your solar panels also conserves your manufacturer's warranty. We use a 3 stage spotless water purification system along with special water fed brushes that wont scratch or harm your solar panels leaving you with a spot free solar panels. We are state licensed and insured. Our Services: Professional solar panel cleaning, Pressure washing, Rooftop and skylight cleaning, Commercial cleaning services exterior window cleaning and gutter cleaning.