Exterior Cleaning
Professional Solar Panel Cleaning & Rinsing — Restore Efficiency, Protect Your Investment
Dirty solar panels don’t just look bad — they cost you money every single day. Dust, pollen, bird droppings, and mineral deposits silently reduce your system’s energy output. NorTech’s professional solar panel cleaning and deionized rinsing service restores your panels to near-peak efficiency without scratching coatings or voiding warranties.
New to NorTech? Save 15% off your first solar panel cleaning and rinsing service — any system size, any roof type.
Why It Matters
Dirty Solar Panels Are Costing You Money Every Day They Go Uncleaned
Solar panels work by converting sunlight into electricity. Any layer of dust, grime, pollen, or bird droppings between the panel surface and the sun reduces the amount of light that reaches the photovoltaic cells — and that directly reduces your energy output and savings. The effect compounds over time as soiling accumulates.
15–25%
Average energy output loss from soiled solar panels in most climates2–4×
Recommended cleaning frequency per year for most residential systems0 TDS
Total dissolved solids in our deionized rinse water — leaves zero mineral residueRain alone does not clean solar panels. Rainwater carries dust and minerals that deposit on the panel surface as it evaporates — often leaving panels dirtier than before rainfall. Professional cleaning with deionized water is the only method that removes all contaminants and leaves no new residue behind.
What’s Reducing Your Output
What Accumulates on Solar Panels & Why Each Type Needs Professional Cleaning
Different types of soiling affect panel output differently and require different cleaning approaches. NorTech technicians identify what’s on your panels before starting.
Dust & Dry Particulates
The most common soiling type. Fine dust settles continuously and creates a diffuse layer that reduces light transmission across the entire panel surface. Worst in arid climates, near construction, and on flat or low-angle installations.
Pollen
Seasonal pollen coats panels in a sticky yellow-green layer that doesn’t rinse off with rain. Particularly heavy in spring, pollen buildup can cause noticeable output drops during the sunniest months of the year.
Bird Droppings
One of the most damaging soiling types because droppings create complete shading on the cells directly beneath them. Even a single dropping on a panel string can disproportionately reduce output for that entire circuit.
Mineral Deposits
Hard water from rain and sprinkler overspray leaves calcium and silica deposits on panel glass. These minerals don’t affect appearance much initially but etch into anti-reflective coatings over time if not removed regularly.
Algae & Biological Film
Shaded or partially shaded panels in humid climates can develop algae and biological film. Soft wash solution kills the growth and pure water rinsing removes all residue without scratching the panel surface.
Leaves & Organic Debris
Tree debris, leaf litter, and seed pods accumulate around panel edges and in gaps between panels. Decomposing organic material holds moisture against panel frames and can cause long-term frame corrosion if not cleared.
Our Cleaning Process
How NorTech Cleans Solar Panels — Step by Step
Every solar panel cleaning appointment follows a precise process designed to maximize output restoration without any risk to the panels, coatings, or warranty.
Assessment
Pre-Clean Inspection
Our technician inspects every panel for soiling type, surface condition, and any visible damage — cracks, delamination, or hotspot discoloration — before touching the panels. Any pre-existing issues are documented and reported to you before cleaning begins.
Dry Removal
Loose Debris Cleared First
Loose dust, leaves, and dry debris are removed with a soft dry brush before any water is applied. This prevents abrasive particles from being dragged across the panel surface during wet cleaning — the most common cause of micro-scratches from DIY cleaning.
Wet Cleaning
Soft Brush & Deionized Water Wash
Panels are washed using soft-bristle brushes and deionized water at low pressure. For biological growth or stubborn soiling, a panel-safe biodegradable solution is applied and allowed to dwell before brushing. No abrasive pads, no harsh chemicals, no high-pressure spray that could force water under panel frames.
Final Rinse
Pure Deionized Water Rinse
Every panel is rinsed with a final flood of deionized water at 0 TDS — zero total dissolved solids. This carries all remaining residue off the panel surface and dries completely clean, leaving no mineral deposits, no streaks, and no residue that could reduce light transmission.
Pricing Transparency
Solar Panel Cleaning Cost Factors
Solar panel cleaning costs depend on the number of panels, system layout, roof access, and soiling level. Click any factor to learn more.
All solar panel cleaning pricing is quoted to your system. Request a free quote — no obligation. Request a free quote — no obligation.
Customer Reviews
What Customers Say About Our Solar Panel Cleaning Service
4.8
Based on 1000+ ratings
“Our monitoring app showed a clear output jump the day after cleaning. We were running about 18% below expected output. After the clean we were back within 3% of projections. That’s real money back in our pocket every month.”
— Eric & Dana F.“The technician did a pre-inspection and actually found a micro-crack on one panel we had no idea about. Flagged it, photographed it, sent us the report. That alone was worth more than the cleaning cost — we were able to file a warranty claim.”
— Maria C.“The cleaning itself was done well. My frustration is they showed up 90 minutes past the appointment window with no call. When you’re working from home and have to be there for roof access, that’s a real inconvenience. The results were good but communication needs work.”
— Phillip W.“I used to clean the panels myself with a garden hose and thought I was doing fine. After a professional clean with their deionized water system, I could see the difference immediately — the panels were actually clear, not just wet. Won’t go back to DIY.”
— Russell T.“Good job on the panels. The one area they missed was the debris packed into the gap between the bottom panel row and the roof — it’s tight to reach but still worth mentioning. Output-wise the improvement was noticeable within a day.”
— Yvette M.“Live near a farm and every spring our panels get absolutely buried in pollen. Booked NorTech after the worst season yet and our output went from embarrassing to better than the day the system was installed. Already put the fall appointment on the calendar.”
— George & Ann B.Got Questions?
Solar Panel Cleaning & Rinsing — Frequently Asked Questions
Service Coverage
Solar Panel Cleaning Services Near You
NorTech provides professional solar panel cleaning and rinsing across the United States. We serve hundreds of cities including:
Get Started Today
Stop Losing Money to Dirty Panels — Schedule a Clean Today
Get a free, no-obligation quote for professional solar panel cleaning and rinsing. NorTech’s certified technicians use warranty-safe deionized water systems to restore your system’s output without any risk to your panels.
