Professional Sydney Solar Panel Cleaning Specialist

Depending on the level of soiling (dirt, grime, and debris), dirty panels can reduce your system’s efficiency by anywhere from 10% to 30% or more. Regular professional cleaning ensures your solar system operates at its maximum potential, maximizing your energy savings.

As a general rule for Sydney homes, we recommend a professional clean at least once every 6 to 12 months. If your property is near the coast, under trees, or in a high-traffic/industrial area, you may benefit from cleaning every 4-6 months due to higher build-up of salt, leaves, or pollution

Yes. By restoring your panels to peak efficiency, they will generate more electricity. This increase in energy production directly translates to higher savings on your electricity bill and a faster return on your initial solar investment. The cost of a professional clean is often recovered quickly through increased power generation.

Yes, a professional clean by Whitewash includes a visual inspection of your solar system. We check for common issues like cracked panels, wear on mounting brackets, and signs of pest infestation (like birds or possums nesting underneath). We will report any visible issues to you.

We use a professional, safe, and streak-free cleaning process that involves specialized pure de-ionised water and soft-bristle brushes. This pure water is essential because it is free of the minerals found in tap water, which can leave residue and streaks on the glass, potentially causing ‘hot spots’ or further reducing efficiency.

No. We strictly use pure de-ionised water. Harsh chemicals or detergents can leave residue, potentially damage the panel surface, and may even void the manufacturer’s warranty. Our method is safe for your panels and the environment.

No, we do not use high-pressure washers. High-pressure water can damage the panel seals, the aluminium frame, or force water into the electrical components, which can be dangerous and void warranties. We use a gentle, low-pressure flow with soft brushes.

Absolutely. Safety is our top priority. Our technicians are trained to work safely at heights and adhere to all Australian Work Health & Safety (WHS) protocols. We are fully insured with Public Liability Insurance for your peace of mind.

Generally, no, provided we have safe access to the roof area and the main isolation switch (which we need to safely turn the system off before cleaning). We will confirm access requirements when you book and can send you before-and-after photos of the clean.

The duration depends on the size of your system and the accessibility of the roof. A standard residential system (approx. 6kW, 15-25 panels) usually takes between 1 to 2 hours. We will provide an estimated timeframe with your quote

Cleaning is best done on a dry, overcast day. If light rain occurs shortly after we finish, it will not negatively affect the clean. The panels are designed to be outdoors, and the professional clean will have removed all the sticky, baked-on grime that rain can’t remove.

Our technicians will safely shut down your solar system at the inverter/isolator before starting the cleaning process, and they will power it back on when the job is complete. This is a crucial safety step when water is involved.

No, quite the opposite. Most manufacturers recommend regular cleaning and maintenance to keep the warranty valid. Our use of non-abrasive methods and pure water ensures no damage is caused, maintaining your warranty conditions.

Yes. Our team is equipped with the necessary safety equipment and training to safely access and clean panels on multi-story buildings and various roof types across Sydney. We will assess the roof access when providing your quote.

Hot spots occur when a section of a panel is shaded (e.g., by a large bird dropping or dirt buildup), causing the shaded cells to heat up excessively. This reduces the panel’s performance and can cause long-term, irreversible damage. Regular cleaning prevents hot spots from forming.

Yes, we offer discounted ongoing maintenance plans (e.g., bi-annual or annual cleans) for Sydney customers. Booking a regular package is the most cost-effective way to ensure maximum energy production year-round.

Whitewash services all major regions across the greater Sydney area, including the Eastern Suburbs, Inner West, Sutherland Shire, Northern Beaches, Hills District, and Western Sydney.

You can easily request a free quote and book your service by calling us directly or by filling out the contact form on our website. We will ask for a few details about your system size and location to provide an accurate, upfront price.