Best Solar Panel Cleaning Products in Australia (2025 Review)
What do professional solar cleaners actually use? We review the best brushes, squeegees, water systems, and solutions available in Australia — and what to avoid.
Walk into any professional solar cleaning truck and you’ll see a fairly consistent set of tools — soft-bristle brushes, water-fed poles, a filtration system, and nothing with chemicals. The equipment matters more than most homeowners realise.
Use the wrong brush and you’ll microscratch the anti-reflective glass coating — invisible to the eye but measurable in efficiency loss. Use tap water and you’ll leave mineral deposits that gradually reduce output. This guide covers the best solar panel cleaning products available in Australia, what works, what to avoid, and where to buy it.
According to Clean Energy Council data, Australia now has over 3.6 million solar installations, yet industry surveys suggest fewer than 30% of homeowners clean their panels regularly with appropriate equipment. This gap represents both a maintenance concern and an opportunity for DIY homeowners to maximise their solar investment.
The Shortlist: Best Solar Panel Cleaning Products You Actually Need
For a capable home setup, you need five core solar panel cleaning products:
- Solar-rated soft-bristle brush — the core cleaning tool
- Extension pole — to reach panels safely from the ground or ladder
- Purified/deionised water source — the single most important quality factor
- Garden hose with gentle spray head — for rinsing
- Microfibre squeegee (optional) — for streak-free finish
Everything else is marketing.
Best Solar Panel Brushes Available in Australia
What to Look For in Solar Panel Cleaning Products
- Ultra-soft flagged or split-end bristles (flagged tips hold more water and are gentler)
- No metal components anywhere near the brush head
- Flow-through water channel (allows purified water to feed through the handle into the brush while cleaning — used by professionals)
- Lightweight head (under 350g) — heavy heads cause arm fatigue which leads to over-pressure
Top Solar Panel Brushes Available in Australia
Tucker Rinse & Vac Soft Wash Brush Available through window cleaning suppliers. Genuine soft bristle, suitable for solar. ~$65–$90 for the head alone. Industry testing shows Tucker brushes maintain bristle integrity through 200+ cleaning cycles without bristle deformation.
Unger HydroPower Brush Set Industry standard for water-fed pole cleaning. Flow-through channels, replaceable bristle head. ~$80–$120. Available through cleaning equipment distributors. Used by approximately 65% of commercial solar cleaning operations in Australia according to industry surveys.
Bunnings “Soft” Car/Window Brushes Acceptable for casual DIY if bristles are genuinely soft. Not flow-through. Around $20–$35. Inspect bristles carefully — avoid anything labelled “medium” or “stiff.”
Avoid: Any brush marketed for outdoor furniture, tiles, or decking. These have abrasive bristles that will scratch your panels.
Best Extension Poles for Solar Panel Cleaning
Extension poles let you clean from the ground (safest) or reach across panels from a single ladder position without overreaching.
Recommended length for single-storey homes: 4–6 metres total reach (combined pole + your arm height)
Top Extension Pole Options in Australia:
| Product | Length | Price Range | Notes |
|---|---|---|---|
| Unger Aluminum Pole | 2–4 sections | $45–$90 | Lightweight, locks well |
| Ettore Connect | 3–6m | $55–$100 | Twist-lock, no slippage |
| Bunnings Telescopic Pole | 3–4.5m | $35–$60 | Budget, slightly heavier |
| Water-fed Pro Poles | 6–12m | $180–$400+ | Professional level, for two-storey+ |
For two-storey homes, a water-fed pole with a filtration backpack is the professional standard — but at $400–$1200 it only makes sense if you’re cleaning multiple properties.
Purified Water Systems: The Most Important Solar Panel Cleaning Product
This is where most DIY cleaners go wrong. Australian tap water TDS (total dissolved solids) ranges from approximately:
| City | Typical TDS (ppm) | Water Quality Impact |
|---|---|---|
| Sydney | 80–120 | Moderate spotting risk |
| Melbourne | 25–65 | Low spotting risk |
| Brisbane | 50–120 | Moderate spotting risk |
| Perth | 120–200 | High spotting risk |
| Adelaide | 150–400 | Very high spotting risk |
| Darwin | 30–80 | Low-moderate risk |
Any water over ~50 ppm will leave visible spotting when it dries on warm panels. Adelaide and Perth homeowners using tap water are essentially coating their panels in a thin mineral film every time they “clean” them.
Research from the University of New South Wales solar research centre indicates that mineral deposits from hard water can reduce panel efficiency by 0.5-2% per year if left unaddressed — cumulative losses that compound over a system’s 25-year lifespan.
Best Water Purification Options for Solar Panel Cleaning
1. Portable Deionisation (DI) Filter Small inline filter cartridge that connects to your garden hose. Reduces TDS to near zero. Costs $40–$80 for the unit + $15–$30 per replacement cartridge (lasts 2–8 standard cleans depending on tap water hardness). Brands: Unger HydroPower, RHG, various eBay imports. Verdict: Best value for most homeowners.
2. Reverse Osmosis (RO) System Under-sink or countertop system producing TDS of 5–30 ppm. Expensive ($300–$800 installed) but provides unlimited purified water and works for other household uses. Cleaning is a side benefit. Verdict: Only worth it if you already have one.
3. Pre-filled Deionised Water Drums 20L drums from hardware stores or car wash suppliers. ~$8–$15 per 20L. One drum typically covers a standard 20-panel system one time. Verdict: Convenient for occasional cleaning, but ongoing cost adds up.
4. Melbourne, Hobart, Darwin homeowners: Your tap TDS is low enough that tap water may be acceptable IF you squeegee panels immediately after rinsing. Don’t let tap water air-dry on panels — squeegee it off before evaporation.
Best Spray Heads and Hose Attachments for Solar Panel Cleaning
You want a gentle fan spray or shower spray setting. Never use:
- Jet/stream settings — too much force, can lift sealants
- High-pressure washers — will void panel warranty (see our pressure washing guide)
A simple adjustable spray head from Bunnings ($8–$15) is all you need for rinsing.
Best Microfibre Squeegees for Solar Panels
Optional but useful for ground-level or easily reachable panels. A good squeegee eliminates almost all drying marks.
- Ettore Rubber Squeegee + Extension Adapter — professional grade, $25–$45
- Unger MicroStrip Combo — waffle-weave + squeegee, $35–$60
- Basic Bunnings Window Squeegee — adequate for smooth glass, ~$12–$20
Avoid hard rubber or aged rubber squeegees — they leave streaks and can scratch in fine dirt.
Best Cleaning Solutions for Solar Panels
The honest answer: for light to moderate soiling, you need nothing but purified water. Most professional cleaners use zero chemical additives in normal operations.
When a cleaning solution product is used (for heavy soiling, organic growth, or baked-on bird droppings), professionals reach for:
1. pH-neutral biodegradable solar cleaners
- Clean Solar Concentrate (Australian brand)
- Kinetix Solar Wash
- Any pH-neutral, low-foaming, rinse-free formulation
These are diluted 50:1 to 100:1 in purified water. They help break down biological soiling without leaving residue.
2. Isopropyl alcohol (IPA) — spot use only For stubborn dried bird dropping edges, a small amount of 70% IPA on a microfibre cloth (not sprayed directly on panels) can soften the residue. Do not use extensively.
Never use:
- Dish soap or detergent (high pH, foaming, residue)
- Windex or glass cleaners (ammonia-based — degrades EVA layer over time)
- Vinegar (mildly acidic — see full analysis)
- WD-40, petroleum solvents, or any oil-based product
- Bleach or oxidising cleaners
Complete Solar Panel Cleaning Products Starter Kit Budget
| Item | Budget | Mid-Range |
|---|---|---|
| Soft brush + pole combo | $45 (Bunnings) | $90 (Unger) |
| DI filter inline | $50 | $75 |
| Spray head | $10 | $15 |
| Squeegee (optional) | $15 | $40 |
| Total | ~$120 | ~$220 |
Compare this to the cost of one professional clean ($180–$280) — the kit pays for itself after 1–2 uses.
Is Buying Solar Panel Cleaning Products Worth It vs Hiring a Professional?
DIY cleaning products make sense when:
- You have accessible single-storey panels
- You’ll clean at least twice per year
- You’re comfortable on a ladder or can reach from the ground
- You enjoy the hands-on aspect
Professional cleaning makes sense when:
- Panels are on a two-storey home or steep roof
- You want the convenience
- Your system hasn’t been cleaned in 1–2+ years (heavy build-up benefits from professional-grade equipment)
- You want a post-clean inspection report
Most homeowners find a hybrid approach works well: professional clean every 12–18 months, spot DIY cleaning of accessible panels in between.
Summary: The Essential Solar Panel Cleaning Products Buying List
For a capable, safe DIY solar cleaning kit:
- ✅ Soft solar-rated brush (Unger or similar) — $45–$90
- ✅ 4–6m telescopic extension pole — $35–$90
- ✅ Inline DI filter for hose — $50–$75
- ✅ Gentle fan spray hose head — $10–$15
- ✅ Optional: rubber squeegee — $15–$40
Total budget: $155–$310. For one panel cleaning per year, professional is probably more cost-efficient. For twice-yearly cleaning, the kit quickly becomes better value.
Where to Buy Solar Panel Cleaning Products in Australia
Unlike some specialist items, solar panel cleaning supplies are widely available through mainstream retail channels:
Bunnings Warehouse: Stocks microfibre cloths, soft-bristle brushes, garden hose fittings, and basic squeegees. The most convenient source for most homeowners. Doesn’t typically stock DI water or inline DI filters.
Supercheap Auto / Repco: Automotive stores carry distilled water (labelled “battery top-up water”) in 1-litre and 5-litre bottles — the same deionised water used by professionals. At $3–5/litre, it’s the simplest DI water solution for DIY cleaning.
Solar cleaning suppliers (online): Suppliers like Solar Choice, SunWiz partners, and dedicated solar cleaning equipment retailers stock commercial-grade microfibre scrubbers, water-fed poles, and inline DI filter systems. Prices are lower than retail for the same or better quality.
eBay / Amazon Australia: Water-fed brush poles (the telescoping type used by professional window and solar cleaners) are available for $80–$200 — significantly cheaper than trade suppliers but adequate for residential use.
Specialty solar retailers: Companies that sell solar monitoring equipment (e.g., Solar Analytics dealers, Enphase installers) often carry approved cleaning solution brands as a sideline.
When to Replace Your Solar Panel Cleaning Products
Maintaining your cleaning kit ensures every clean actually improves panel performance:
- Microfibre cloths: Replace when they start pilling or feel scratchy. Heavily soiled cloths that haven’t been washed can scratch panels. Wash separately from other laundry (no fabric softener — it coats the fibres and reduces absorbency).
- Soft brushes: Replace when bristles lose their shape or become splayed. A deformed brush applies uneven pressure. Typical lifespan: 3–5 years with regular use.
- DI filter resin cartridges: Exhaust when TDS reading rises above 30 ppm. Don’t guess — test with a $15 TDS meter from eBay or Amazon AU.
- Squeegee rubber: Replace when rubber becomes nicked, hardened, or streaks on clean glass. Poor-quality rubber on a hot panel can scratch.
- Hose and fittings: Inspect annually for cracks or UV degradation. A split hose that sprays water at panel wiring or junction boxes is a problem.
Cost-Benefit Analysis: Solar Panel Cleaning Products
According to data from the Clean Energy Council and independent solar monitoring studies, dirty solar panels can lose 15-25% efficiency in high-dust environments (rural, coastal, industrial areas) over a 12-month period without cleaning. For a typical 6.6kW residential system producing 25kWh/day, this represents approximately 3.75-6.25kWh daily loss.
At current Australian electricity rates (averaging $0.28-0.35/kWh across major cities), the annual financial impact of uncleaned panels ranges from $380 to $800 in lost production value for a standard residential system.
A one-time investment in quality solar panel cleaning products ($155-$310) therefore pays for itself in a single year through restored production efficiency — and continues delivering value for 3-5+ years of equipment life.
Sources
-
Clean Energy Council (2024). Clean Energy Australia Report 2024. Melbourne: Clean Energy Council. Retrieved from cleanenergycouncil.org.au
-
UNSW School of Photovoltaic and Renewable Energy Engineering (2023). Impact of Soiling on Photovoltaic Performance in Australian Climates. Sydney: University of New South Wales.
-
Standards Australia (2021). AS/NZS 5033:2021 Installation and safety requirements for photovoltaic (PV) arrays. Sydney: Standards Australia International Ltd.
-
Australian PV Institute (APVI) (2024). Mapping Australian Photovoltaic Installations. Retrieved from pv-map.apvi.org.au
Last updated: April 2026. Prices are approximate Australian retail estimates and may vary by retailer and region.
Related: How to Clean Solar Panels Safely · Deionised Water for Solar Panels · DIY Solar Panel Cleaning Risks
Frequently Asked Questions
What cleaning solution do professionals use on solar panels?
Most professional solar cleaners use deionised or purified water only — no chemicals. When a cleaning agent is used, it’s a pH-neutral biodegradable solar-specific cleaner at very low concentration. Regular household cleaners, detergents, and solvents are never appropriate.
Can I use a regular window cleaning brush on solar panels?
Not ideally. Window brushes often have stiffer bristles designed for glass frames and frames, not delicate anti-reflective coatings. Solar-specific brushes have ultra-soft flagged bristles engineered to clean without micro-scratching.
Is deionised water necessary for solar panel cleaning?
Strongly recommended. Tap water in most Australian cities has mineral content (TDS of 100–400+ ppm) that leaves white spots when it evaporates. These spots reduce panel efficiency and compound over time. Deionised or RO-filtered water (TDS under 20 ppm) leaves no residue.
Where can I buy solar panel cleaning equipment in Australia?
Bunnings stocks basic soft brushes and extension poles. Specialty online retailers like Solar Cleaning Australia, Clean Solar, and Unger distribute professional-grade equipment. eBay and Amazon AU have imported options at lower price points.
What are the best solar panel cleaning products for home use?
Professional solar panel cleaning products include ultra-soft flagged bristle brushes, telescopic extension poles (4-12m), inline deionisation filters, microfibre squeegees, and pH-neutral biodegradable cleaning solutions. The essential starter kit costs $155-$310 and pays for itself after 1-2 uses compared to professional cleaning services.
Frequently Asked Questions
Most professional solar cleaners use deionised or purified water only — no chemicals. When a cleaning agent is used, it's a pH-neutral biodegradable solar-specific cleaner at very low concentration. Regular household cleaners, detergents, and solvents are never appropriate.
Not ideally. Window brushes often have stiffer bristles designed for glass frames and frames, not delicate anti-reflective coatings. Solar-specific brushes have ultra-soft flagged bristles engineered to clean without micro-scratching.
Strongly recommended. Tap water in most Australian cities has mineral content (TDS of 100–400+ ppm) that leaves white spots when it evaporates. These spots reduce panel efficiency and compound over time. Deionised or RO-filtered water (TDS under 20 ppm) leaves no residue.
Bunnings stocks basic soft brushes and extension poles. Specialty online retailers like Solar Cleaning Australia, Clean Solar, and Unger distribute professional-grade equipment. eBay and Amazon AU have imported options at lower price points.
Professional solar panel cleaning products include ultra-soft flagged bristle brushes, telescopic extension poles (4-12m), inline deionisation filters, microfibre squeegees, and pH-neutral biodegradable cleaning solutions. The essential starter kit costs $155-$310 and pays for itself after 1-2 uses compared to professional cleaning services.