Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
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AfterFast, Reliable Solar Panel Cleaning Across Altadena
Solar panel cleaning in Altadena is not a cosmetic service. It is maintenance for equipment that has to perform under foothill sun, wildfire ash, and oak debris. A typical residential panel cleaning in Altadena runs $150 to $350 depending on roof pitch, access, and how much soiling has built up. We have been cleaning arrays across Altadena long enough to know which homes collect eucalyptus sap and which ones get a fine layer of Eaton Fire ash that you cannot see from the ground. If you are looking at your production numbers and wondering why they dropped, call (877) 550-6892 and we will come take a look.
Our Solar Panel Cleaning crew works in Altadena weekly, not quarterly. We know the streets, the rooflines, and the fire-zone rules. You are not getting a rotating cast of subcontractors. You get Gus’s team, background-checked and uniformed, showing up when we said we would.
Why Gus’s Solar Is Altadena’s Preferred Solar Panel Cleaning Company
Gus Petrakis started this business in 2011 and put his own name on the truck. That still means something in Altadena, where a lot of homeowners have been burned by national installers who quoted one number on the phone and a different one at the door. We do not do that. The price we quote is the price you pay. And if something is not done right, the 90-Day Done Right Promise means one call brings Gus back to make it right, in writing.
We answer the phone. A live person, 24/7, not a voicemail tree. When an Altadena homeowner calls at 7pm because a post-storm inspection flagged debris on their array, they talk to a human who can schedule a visit. That matters here. You live in an unincorporated part of LA County. A County LADBS inspector can note dirty panels as a fire-hazard observation during a re-roof or service check. You do not want a callback because nobody answered your call on a Friday afternoon.
Our Altadena customers say the same thing: the crew showed up on time, explained what they were doing, and did not try to upsell anything that was not needed. We are not going to tell you that you need a full system replacement because your panels are dusty. If your panels are fine, we will tell you they are fine. That is the whole point of Solar Panel Cleaning in Altadena as we do it: honest work, one trip, done right.
Our Solar Panel Cleaning Services in Altadena
Residential Panel Cleaning
Residential panel cleaning in Altadena typically runs $150 to $350. That range reflects what we actually see here: single-story Craftsman bungalows with wide eaves and easy ladder access on the low end, hillside customs with steep multi-pitch rooflines on the upper end. We use deionized water and soft brushes, no abrasive scrubbing, no pressure washing. Your glass gets the same treatment whether you have Panasonic modules from 2015 or Qcells from last year. If your roof is steep enough that we need a harness system, we will tell you before we start, not after.
Commercial Array Cleaning
Gus’s Solar does not stop at homes. Altadena has older commercial buildings along Lake Avenue and Mariposa Street with arrays that have been collecting dust and leaf litter for years. Commercial array cleaning runs $350 to $800 for most local roofs, depending on array size and access. We schedule commercial work around your business hours, including early mornings and weekends. The goal is simple: restore the production your system is rated for without disrupting your operation.
Bird & Critter Guard Installation
Birds and squirrels love the space under solar panels. The gap between a panel and your roof deck is shaded, dry, and protected from predators. What we see in Altadena homes is often worse than the basin: mature oak canopies mean more nesting material, and the same trees drop acorns that draw squirrels up. We install galvanized steel critter guard around the array perimeter for $400 to $900 for a typical residential system. It keeps pigeons and squirrels out, prevents the dry leaf debris they bring from accumulating, and in a Very High Fire Hazard Severity Zone, that debris is exactly what you do not want near electrical equipment.
Debris & Soiling Removal
Debris and soiling removal in Altadena is not a once-a-year chore. Pine duff from the San Gabriel foothills, eucalyptus sap, oak leaves, and the fine ash still settling from the January 2025 Eaton Fire all accumulate on rooftop glass. A standard wash removes what you can see. We remove what you cannot: micro-layers of ash that etch glass over time and cut production. This service runs $200 to $400 for most Altadena homes when bundled with a full cleaning. We also offer scheduled cleaning plans for homeowners who do not want to think about it.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Altadena
We clean and maintain arrays built on any major brand. Here in Altadena we regularly see Enphase microinverters, Panasonic modules, Canadian Solar panels, and FranklinWH batteries. We have worked on JinkoSolar arrays and plenty of older systems too. The brand does not change the fundamentals of cleaning, but it does change what we check while we are up there. If your Enphase monitoring shows a production dip, we verify whether it is soiling or something bigger. We stock common replacement parts for the brands most common in Altadena, which means fewer return trips and faster turnaround for you.
Common Solar Panel Cleaning Problems We See in Altadena Homes
- Post-Eaton Fire ash accumulation: Ash does not just rinse away with rain. The fine particulate settles into the glass texture and can etch the surface over time, which voids some manufacturer performance warranties. We see this most often on homes in the northern Altadena foothills that were downwind of the burn zone.
- Pine duff and eucalyptus sap on north-facing planes: A roof plane that looks toward the San Gabriels collects dramatically more debris than a south-facing one. North-facing arrays in Altadena need twice-yearly cleaning during wildfire season, and we have learned to schedule those visits accordingly.
- Critter nesting under 1920s and 1930s-era rooflines: The same Craftsman bungalows with charming original architecture often have roof gaps and fascia boards that make it easy for birds and squirrels to get under panels. Critter guard is not optional on these homes; it is the difference between clean panels and a recurring fire hazard.
- Failed County LADBS solar inspections due to dirty panels: Because Altadena is unincorporated, solar inspections run through LA County Building and Safety, not a city building department. County inspectors are trained to look for fire-zone-specific issues, and a panel array caked with combustible leaf litter can be written up as an observation that delays your sign-off. We have cleaned more than a few arrays the week after a failed inspection.
Pricing for Solar Panel Cleaning in Altadena, CA
A typical residential panel cleaning in Altadena runs $150 to $350. A larger hillside home with a steep roof and difficult access can run up to $500, and that is still less than a full day’s production loss from an array running at 70 percent efficiency all summer. Bird and critter guard installation adds $400 to $900 depending on array perimeter and roof configuration. Post-storm panel cleaning, which includes debris removal and a production check, runs $250 to $450. These are honest ranges, not teaser prices. We give you a firm quote before any work starts, and we honor it. Call (877) 550-6892 for a free estimate. No signature wanted tonight. Take two weeks and think about it; the price will be the same.
We Also Serve Cities Near Altadena
Altadena sits right next to Altadena neighbors like Pasadena, La Cañada Flintridge, East Pasadena, and San Marino. If you live in one of those communities and need panel cleaning, we are already working in the area. A quick call to (877) 550-6892 gets you on the schedule alongside our other foothill stops.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Solar Panel Cleaning in Altadena
Eaton Fire ash contains fine silicates and carbon particles that bond to panel glass, and a standard wash alone often is not enough to remove the micro-layer that has settled into the glass surface. We use deionized water and a specific cleaning process that lifts that fine ash without scratching the glass, then we inspect each panel for etching that may already be affecting production. Call (877) 550-6892 and we will assess your array before recommending a full cleaning.
Yes. Panels in Altadena’s fire zone should be cleaned at least twice a year, and more often if your roof faces north toward the San Gabriels or sits under a heavy oak canopy. The reason is not just production; LA County fire inspectors can cite combustible debris accumulation near solar equipment as a defensible-space violation during any solar or roofing inspection. We offer scheduled cleaning plans so this does not become something you have to remember.
Cleaning your panels does not touch your electrical panel or net metering agreement, and it will not interfere with a planned service upgrade. But we will flag it if the production numbers we see after cleaning suggest a deeper problem, because on an older 100-amp system, an underperforming array can mask issues that will surface later during the interconnection review. The short answer: cleaning is safe, and it gives you a better picture of what your system is actually doing.
Altadena hillside homes sit at 900 to 2,000 feet in the San Gabriel foothills, above the marine-layer inversion that suppresses sunlight in the lower basin. That means more peak sun hours and more heat, but it also means more pine duff, more eucalyptus sap, and more wind-driven debris on panels. A north-facing hillside array in Altadena collects debris that a flat Pasadena roof never will. Our crew uses fall-protection gear on steep slopes and we plan access around the longer service drives and tighter turnarounds common on Altadena’s hillside lots.
Yes. Dry nesting material like straw, pine needles, and twigs under a hot panel array is combustible, and in a Very High Fire Hazard Severity Zone that is a documented risk, not a theoretical one. LA County inspectors have flagged bird debris under panels as a fire-hazard observation during routine solar inspections. We install critter guard to prevent nesting before it starts, and we remove existing debris as part of every cleaning visit. If you are seeing birds around your panels, call (877) 550-6892 and we will come take a look before it becomes an inspection problem.
Gus’s Solar cleans panels across Altadena the way we clean them for our own neighbors: on time, done right, no upsell. Whether you need a one-time post-storm cleaning or want a scheduled plan for a fire-zone property, call (877) 550-6892. A live person answers. We will give you an honest quote and a straight answer about what your array needs.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Altadena since 2011.