Solar Panel Cleaning in Perth
Solar Panel Cleaning From $7 a Panel, Pure Water Only
Coates Window Cleaning provides solar panel cleaning across the Perth metro using purified, deionised water and soft brushes, with no detergents or chemicals that can damage panel coatings or void manufacturer warranties. Dust, bird droppings and traffic film restrict panel output, and regular cleaning restores it, with panels left completely spot-free by a fully insured, working-at-heights certified team. Most homes pay $7 to $10 a panel, so a typical 20-panel system lands between $140 and $200. Looking for solar panel cleaning near me? We come to homes and businesses in every Perth suburb, priced per panel.
How Much Does Solar Panel Cleaning Cost in Perth?
Solar panel cleaning with Coates costs $7 to $10 per panel for most Perth homes, which puts a typical 20-panel system between $140 and $200, and large commercial arrays are quoted per site with volume rates for systems over 100 panels. What moves the number inside that range is roof pitch and access, how many panels, and how heavily soiled they are, a roof that has not been cleaned since installation takes longer than a yearly maintenance clean. You paid good money for those panels, and a proper clean is the cheapest way to get back what they're capable of, full ranges on our pricing page.
How Often Should Solar Panels Be Cleaned in Perth?
Once a year is right for most Perth homes, and late winter is the smart time to book, so clean panels go into the high-yield spring and summer months and earn their keep fastest. Twice a year makes sense near the industrial estates in Malaga, Kewdale and Welshpool where fine dust settles daily, under gum trees and jacarandas, anywhere cockatoos and pigeons roost, and after a red-dust easterly has coated the roof.
Solar panels fail loudly when they break, but they lose money quietly when they're dirty. Perth's dust, pollen and bird droppings build a film you can't see from the ground, and your system just produces less, month after month, typically somewhere between 5 and 25 per cent depending on how long the film has been building.
Most of the panels we clean sit on homes across Bayswater, Morley, Dianella, Mount Lawley, Yokine, Como and South Perth, with commercial arrays everywhere from Osborne Park down to Canning Vale.
Does Rain Clean Solar Panels?
No, and it is the question we get most. Rain moves the grime around and leaves a mineral film behind as it dries, which is the same reason tap water spots glass, and bird droppings and pollen simply do not wash off at all. A panel cleaned with purified water dries without that film, which is the whole point of the method. Whether your installer called it a solar system, a PV array or photovoltaic modules, the cleaning job is the same, getting your rooftop panels back to full output.
Will Cleaning Void My Solar Panel Warranty?
Not the way we do it. Panel manufacturers are blunt about this, harsh chemicals and abrasive cleaning can damage anti-reflective coatings and void warranties. Our method is deliberately gentle, the same purified water system we clean glass with, soft brushes, no pressure washing, no detergents. It's the cleaning your warranty documents would choose.
Before-and-after photos are available on request, and if we spot anything up there that doesn't look right, cracked glass, lifted cabling, birds setting up camp, you'll hear about it. Perth's cockatoos and corellas chew cabling and nest under panels, so if we see lifted conduit, nesting debris or heavy droppings we photograph it and tell you the same day. We don't repair, but you'll know before it becomes a fault.
Cleaning Commercial Arrays Too
For businesses, schools and industrial sites we run scheduled solar maintenance with SWMS and compliance documentation supplied, quarterly programs for Perth's high-dust industrial zones and biannual cycles for most premises. The full details, including how we schedule large arrays, live on our commercial solar panel cleaning page.
Bundle It
Most of our solar customers add a window cleaning or gutter clean to the same visit, one call-out, one invoice, whole property sorted.
Solar Panel Cleaning, Your Questions Answered
$7 to $10 a panel for most homes, so a 20-panel system is $140 to $200. Commercial arrays are quoted per site, with volume rates over 100 panels. The price covers purified water, soft brushes, a working-at-heights certified team and $20 million public liability insurance.
No. Rain leaves a mineral film as it dries and does nothing for bird droppings or pollen. Purified water dries without the film, which is why we use it.
Yes, up to six storeys from the ground with water-fed poles, and scheduled commercial programs with SWMS supplied, see commercial solar panel cleaning.
Rated 5.0 From 280+ Google Reviews
Ellis cleaned our windows inside and out along with our solar panels today and did a fabulous job! It's so nice to meet such a friendly and professional person who loves what they do and treats your home like it was his own with care and consideration. Highly recommended .... our next service is already booked in!
Ellis was prompt with his quote and reminders to us of the date/time and extremely efficient when cleaning our gutters and solar panels. The paths were washed clean after the job was done. Highly recommend Ellis from Coates Window Cleaning.
Ellis really goes above and beyond with his services! Exceptional window and solar panel cleaning. I will definitely book him again.
