Solar panel cleaning in Phoenix is more important here than almost anywhere else in the country. We get less rain than most US cities (about 8 inches per year), more dust storms (haboobs), and more pollen and particulate in the air during certain seasons. The combination means panels in the Phoenix Valley accumulate a film of dirt that, left long enough, can cut output by 15-25%. If your system was producing 30 kWh/day when new and is producing 23 kWh/day now, cleaning is usually the cheapest, fastest fix.

How you clean panels matters as much as whether you clean them. The wrong approach scratches the anti-reflective coating, leaves mineral deposits from hard water, or just doesn't actually remove the bonded dust film. We use deionized pure water through soft-bristle brushes — no soap, no detergents, no abrasives. The deionized water dries without leaving spots or streaks, and the soft bristles lift bonded dust without scratching the glass. The whole process is quick, safe, and effective.

We include cleaning free with every other service visit (repairs, removals, pest work, electrical) because it's quick to do once we're already on the roof and adds real value. Standalone cleaning is also available and typically runs $200-$400 for a residential system depending on size and access. We recommend cleaning twice per year minimum in the Phoenix area — once before peak summer production season (April/May) and once after monsoon dust (October/November).