Solar panel cleaning for roofs and arrays across the Inland Empire.
Rooftop residential systems and larger commercial installations, cleaned panel by panel with the same no-streaks standard we use on windows. A dusty panel is a panel producing less power than it should. King Window Cleaning is based in Upland, CA, and we clean solar for homeowners and businesses across the area.
Looking for solar panel cleaning near me, or a solar panel cleaning company that treats your property like its own? Call, describe the system, and we will scope it.
Why solar panels need cleaning at all.
Panels sit outside all year, and Southern California is dry and dusty. Dust, pollen, bird droppings and film settle on the glass and block light from reaching the cells. Rain rinses some of it off, but rarely all of it, and dry dirt tends to bake on between storms.
Cleaning the panels is a simple way to get back the output you paid for. How much you gain depends on how dirty the system is and how it is installed, so we do not promise a number. What we do is get the glass visibly clean, panel by panel, not just rinsed from the ground.
Rooftop home systems
Most homes have panels on a pitched roof, which makes access the main safety question. We plan the approach before we go up.
Larger arrays
Commercial rooftops have more panels and more rows to work through. The gallery shows a commercial rooftop array before and after cleaning.
How solar panel cleaning is priced.
A small home system and a large commercial array are very different amounts of work, so we price on system size and labor hours instead of a flat fee per panel. The roof pitch, how the panels are laid out and how dirty they are matter as much as the count.
Tell us roughly how many panels you have, whether the system is on a house or a commercial roof, and when it was last cleaned. Estimates are free, and we can come out to see the system on-site. We take cash, check, card and Zelle.
Before we clean your system.
| Access | Tell us how to reach the roof or array |
| Panel count | A rough number is enough to get started |
| Last cleaned | Helps us judge how much buildup to expect |
| Manufacturer notes | Send us any care instructions you were given |
If you already use us for window cleaning or pressure washing, adding solar to the same visit keeps everything in one visit, and you deal with Jose directly.
We clean solar in Upland, Rancho Cucamonga, Ontario, Chino Hills, Eastvale and the rest of the area listed on our service areas page. To talk it through, contact us.
Solar panel cleaning questions, answered.
How is solar panel cleaning priced?
Do you price solar panel cleaning per panel?
How often should solar panels be cleaned?
Do you clean commercial solar arrays?
Ready for panels that actually perform?
Tell us your system size and we will scope it and give you a free estimate.