Solar Panel Cleaning
Solar Panel Cleaning in McMinnville, OR
A+ Exterior Cleaning provides solar panel cleaning in McMinnville, OR and across the Willamette Valley — soft-wash, panel-safe cleaning that removes pollen film, dust, droppings and algae film so panels produce the power you paid for.
Western Oregon grows things — and that includes a sticky spring pollen film, valley dust, cottonwood seeds and bird droppings that settle on glass faster than rain can rinse it away. Our soft-wash, panel-safe cleaning reclaims measurable production: soiling losses commonly run 7–15% (higher near farms and highways), and a gentle clean restores it.
★ 5.0-rated on Google (111 reviews) · Licensed & Insured · Free Written Estimates · Panel-Safe Soft Wash · Mon–Sun 7 AM–9 PM
Rooftop Arrays
Ground-Mount Arrays
Carport & Pergola Arrays
Commercial Rooftops
Tesla Solar Roof & Shingles
Solar Skylights & Awnings
Panel-Safe Soft Washing With Production-Focused Expertise
Our Comprehensive Panel-Safe Cleaning Process for Peak Production
At A+ Exterior Cleaning, we take pride in our gentle and effective solar panel cleaning process, centered around the non-abrasive, low-pressure discipline known as soft washing. This method ensures a thorough clean of every row while preserving anti-reflective coatings, seals and manufacturer warranty requirements.
Inspection & Documentation
Before we touch a panel, we note shading, soiling level, frame and mounting condition, and flag anything your installer should see.
Panel-Safe Soft-Wash Treatment
Based on our assessment, a soft-wash application loosens pollen film, droppings and algae without abrasion — no harsh brushes, never blasted.
Low-Pressure Pure Water Rinse
Panels are rinsed spot-free with pure water at gentle pressure, protecting anti-reflective coatings and leaving no mineral spotting.
Final Rinse and Inspection
We check each row, confirm rinse coverage, and tell you a sensible cleaning cadence for your site, pitch and tree cover.
Solar cleaning matched to your system
Panels collect pollen film, valley dust, cottonwood seeds, bird droppings and algae film at different rates depending on roof pitch, row layout and nearby trees. A+ Exterior Cleaning evaluates the array, the soiling and the mounting before selecting a cleaning process.
Why soft washing differs from pressure washing on panels
Panel-safe soft washing relies on low pressure, soft applicators and pure-water rinsing suited to coated glass and anodized frames. Pressure washing can force water past seals, and abrasive brushes scratch glass and void panel warranties — output losses and warranty claims follow.
Preparing for a panel-cleaning visit
- Move vehicles and patio furniture from beneath the array so ladders and hoses have room.
- Tell us about known leaks, loose panels or inverter alerts before we start.
- Keep pets indoors during rinsing so runoff and spot-free drying stay manageable.
- Ask which rows are included and how we verify rinse coverage after cleaning.
- Review whether pollen season or nearby trees call for a twice-yearly cadence.
Related guide: How often should you clean your solar panels? Expert advice.
Frequently Asked Questions
Do dirty solar panels really lose output?
Yes! dust, pollen and bird droppings shade cells and cut production. Industry studies commonly put soiling losses around 7–15%, higher near farms and highways. A clean restores that lost output.
How often should solar panels be cleaned in Oregon?
Plan on once a year before summer production peaks, plus a look after heavy pollen season. Valley rain helps rinse dust, but it does not remove sticky pollen film or droppings.
Is soft washing safe for solar panels?
Yes! soft-wash cleaning uses low pressure and panel-safe, non-abrasive methods that protect anti-reflective coatings. It is high pressure and harsh brushes that risk warranty issues.
Will cleaning void my panel warranty?
No, manufacturers expect gentle, periodic cleaning. It is abrasive tools and high-pressure water that void coverage. We document system condition before and after every visit.
Get a free written estimate
Ready to get your production back? A+ serves McMinnville and 22 surrounding Willamette Valley communities, Mon–Sun 7 AM–9 PM. Call (503) 830-8106 or request your free written estimate online.
Related Services & Resources
- Roof cleaning & moss removal — same-ladder visit: treat the roof while panels get cleaned.
- How often should you clean your solar panels? Expert advice.
- How to choose the best solar panel cleaning service.
- See all 23 communities we serve.