--- title: "San Mateo Solar Panel Cleaning | AG Windows and Gutters" description: "Professional solar panel cleaning in San Mateo, CA. Deionized water, soft-bristle brushes, fall-protected crews. Restore 10–20% of lost solar output." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Service", "name": "San Mateo Solar Panel Cleaning", "provider": { "@type": "LocalBusiness", "name": "AG Windows and Gutters", "telephone": "(408) 921-3982", "address": { "@type": "PostalAddress", "addressLocality": "San Jose", "addressRegion": "CA", "addressCountry": "US" } }, "areaServed": { "@type": "City", "name": "San Mateo" }, "description": "Professional solar panel cleaning in San Mateo, CA. Deionized water, soft-bristle brushes, fall-protected crews. Restore 10–20% of lost solar output." }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does solar panel cleaning cost in San Mateo?", "acceptedAnswer": { "@type": "Answer", "text": "Most residential arrays run $10–$20 per panel, with discounts on larger systems. New customers get 5 windows cleaned free (interior and exterior) with any first-time service. Chat with us for a free quote." } }, { "@type": "Question", "name": "Will cleaning void my panel warranty?", "acceptedAnswer": { "@type": "Answer", "text": "No. We use the methods most major manufacturers recommend: deionized water and soft brushes. We avoid detergents and high-pressure spray that can void warranties." } }, { "@type": "Question", "name": "How often should solar panels be cleaned?", "acceptedAnswer": { "@type": "Answer", "text": "For most San Mateo homes, once or twice a year. Homes near heavy tree cover, dust, or with bird activity may benefit from quarterly cleaning." } }, { "@type": "Question", "name": "Do you walk on the panels?", "acceptedAnswer": { "@type": "Answer", "text": "Never. Our crews access panels from the roof edges using proper fall protection, never standing or kneeling on the panels themselves." } }, { "@type": "Question", "name": "Can you clean panels on a steep roof?", "acceptedAnswer": { "@type": "Answer", "text": "In most cases yes, water-fed poles reach most residential arrays from a safe roof position. Very steep or unusual installs we'll evaluate before quoting." } } ] } ] --- Menu 🔥 5 Windows Free Expires tonight at midnight 13h : 27m : 34s [(408) 921-3982 ](tel:4089213982) [Home](/)/ [San Mateo](/san-mateo-window-cleaning)/ Solar Panel Cleaning Residential Service · San Mateo, CA # San Mateo Solar Panel Cleaning Restore solar output, most San Mateo arrays gain 10–20% after a professional clean. Deionized water, no spotting, no residue Soft-bristle brushes safe on tempered glass Roof crews trained on fall protection Most arrays regain 10–20% output "AG did an outstanding job on our solar panel cleaning in San Mateo. Professional, on-time, and the results speak for themselves." Verified Google Review AG Windows and Gutters offers professional solar panel cleaning for residential systems across San Mateo and the South Bay. We use deionized water and soft-bristle brushes to safely lift dust, pollen, bird droppings, and mineral spotting without scratching panels or voiding warranties. ![Solar panel cleaning on a residential roof](/__l5e/assets-v1/f564ef2d-750d-46f4-93c1-92f3f15443e3/photo-solar-panel-roof-new.jpg) ![Clean residential solar panels after service](/__l5e/assets-v1/18f0bbe2-7ccc-4ced-8859-a2d0f01d6eca/photo-solar-panel-after.jpg) ## Why Solar Panels Need Regular Cleaning South Bay solar panels collect a fine layer of dust, pollen, and bird droppings that quietly chips away at output. A panel covered in even a thin haze can lose 15–25% of its production, and once mineral deposits bake on, output drops further. Most homeowners never notice because the loss is gradual. We use water-fed poles with deionized water and soft brushes specifically chosen for solar glass. No detergents, no abrasives, and no high-pressure spray that could compromise seals or warranties. Roof access is handled by trained crews with fall protection. ## What's Included - Deionized-water rinse on every panel - Soft-bristle brushing for stuck-on debris - Removal of bird droppings and bonded grime - Visual inspection, flagged cracks, loose mounts, or pest issues - Spot-free dry, no streaks or mineral residue ## Our Process 1 ### Free Quote in Minutes Start a chat, share a few details about your home, and we send a personalized quote, usually within 15 minutes. 2 ### Easy Scheduling Pick a date that works for you. Most San Mateo addresses can be scheduled within 3–7 days. 3 ### We Show Up On Time Uniformed crew arrives in a marked truck, ready to work. We protect your floors and landscaping from start to finish. 4 ### Guaranteed Results Every job is inspected before we leave. If you spot an issue after we leave, we come back free. ### Fully Insured · Background-Checked Crews Every AG technician is uniformed, drug-tested, and trained on our process. ## San Mateo Solar Panel Cleaning FAQs The questions San Mateo homeowners ask us most about solar panel cleaning. ### How much does solar panel cleaning cost in San Mateo? ### Will cleaning void my panel warranty? ### How often should solar panels be cleaned? ### Do you walk on the panels? ### Can you clean panels on a steep roof? ### Ready for San Mateo Solar Panel Cleaning? Get a free quote in minutes, or call us directly. [(408) 921-3982](tel:4089213982)Get a Quote ![Emily](/assets/emily-avatar-0y6DPpiW.jpg) ### Emily, AG Windows and Gutters Online now, ready to help ![Emily](/assets/emily-avatar-0y6DPpiW.jpg) Hey! 👋 I'm Emily with AG Windows and Gutters. Thanks for reaching out, I'd love to get you a free quote. First, **which service can I help you with today?** 🪟 Window Cleaning🍂 Gutter Cleaning☀️ Solar Panel Cleaning🏡 House Washing ## Other Services in San Mateo [Gutter Cleaning ](/san-mateo-gutter-cleaning)[House Washing ](/san-mateo-house-washing)[Roof Washing ](/san-mateo-roof-washing) ## Solar Panel Cleaning in Other South Bay Cities [San Jose ](/san-jose-solar-panel-cleaning)[Cupertino ](/cupertino-solar-panel-cleaning)[Atherton ](/atherton-solar-panel-cleaning)[Morgan Hill ](/morgan-hill-solar-panel-cleaning)[Los Gatos ](/los-gatos-solar-panel-cleaning)[Sunnyvale ](/sunnyvale-solar-panel-cleaning)[Redwood City ](/redwood-city-solar-panel-cleaning)[Saratoga ](/saratoga-solar-panel-cleaning)[Palo Alto ](/palo-alto-solar-panel-cleaning)[Santa Clara ](/santa-clara-solar-panel-cleaning)[Fremont ](/fremont-solar-panel-cleaning)[Campbell ](/campbell-solar-panel-cleaning)[Los Altos ](/los-altos-solar-panel-cleaning)[Milpitas ](/milpitas-solar-panel-cleaning) ## Claim Your 5 Windows Free Special Today \*Limit 5 windows per customer Expires tonight at midnight New customers get 5 windows cleaned free (interior + exterior) with any first-time service. Tell us about your home and we'll send you a personalized quote in minutes. [(408) 921-3982](tel:4089213982)Get a Quote ![AG Windows and Gutters San Jose](/assets/logo-ag-DBAx7BU0.png) ![AG Windows and Gutters San Jose](/assets/logo-ag-DBAx7BU0.png) San Jose's trusted residential window cleaning company. Locally owned, fully insured, streak-free guaranteed. #### Contact [(408) 921-3982](tel:4089213982)[agwindowsandgutters@gmail.com](mailto:agwindowsandgutters@gmail.com) Mobile service across San Jose, the South Bay & Peninsula. #### Business Hours Monday 8 AM – 8 PM Tuesday 8 AM – 8 PM Wednesday 8 AM – 8 PM Thursday 8 AM – 8 PM Friday 8 AM – 8 PM Saturday 9 AM – 5 PM Sunday 9 AM – 5 PM #### Find Us [View on Google Maps](https://maps.app.goo.gl/LJxvKfjTmno7tQiR6) © 2026 AG Windows and Gutters San Jose. All rights reserved. [Click to call](tel:4089213982)Click to Chat