Solar panel maintenance
Keep your panels working hard for years. Book a solar PV health check with technicians who know systems inside out.
- 20+ years
- Family-run
- Which? Trusted Trader
Get your free quote
No-obligation. We'll call you back to talk it through, usually the same working day.
Panels have no moving parts. They still need looking after.
Rain and light debris wash away naturally, which is why panels are low maintenance. Like any equipment, regular servicing still extends their life and keeps output up.
Our skilled technicians look after panels at homes and businesses across London and the South East.
- Visual inspection. Damage, obstructions, corrosion and micro-cracks.
- Component tests. We test the inverter and meter.
- Professional cleaning. At least twice a year is ideal, one-off or in a package.
- Storm checks. We inspect after heavy snow or lightning if you cannot.
Book your solar PV health check today.
Four ways to keep your panels performing
Position matters
Panels sit best at an elevated, tilted angle. It boosts output and lets rain and debris drain away.
Clear the surroundings
Trim overhanging branches and foliage that cast shadows on your panels.
Avoid shade
Shadows cut generation sharply, so keep panels in direct sun all day.
Check after weather
Look for damage after heavy snow or lightning. If you cannot, we will.
Want a professional to check yours? Ask for a health check.
Protect what you paid for
We recommend a full professional service roughly every five years. That keeps you up to date on how your system is performing before small faults become big ones.
Kept in good condition, panels can last up to 30 years, which means more years of lower bills.
- Domestic or commercial. We service both.
- Cleaning your way. Ad-hoc or built into your maintenance package.
- Plain advice. We tell you what needs doing and what does not.
Get a quote for a health check or maintenance package.
What our customers say
Real reviews from homes we've fitted.
Excellent service from initial enquiry through to completion. Paul and Chris run a great team and are hands on to ensure everything runs smoothly. Installation was carried out in just one day and we were briefed thoroughly about the system before they left. Wouldn't hesitate to recommend SW3 and so happy we found them.
We were quoted for 14 panels and 2 batteries and an installation date was set for 2 months later. Everything was delivered on time and the team arrived when agreed. The work was carried out by one electrician who was excellent. It was a very neat installation and done in a day and a half. Any queries were dealt with promptly and to our satisfaction. We would recommend the company.
Very professional from start to finish. Excellent communication, installation of solar panels, battery charger and other equipment was on time and Constantine, the engineer, worked tirelessly with a minimum of fuss and bother. Follow up has also been excellent. Thank you.
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Questions people ask us
How often should solar panels be serviced?
We recommend a professional service about every five years.
What does a health check include?
A careful visual inspection for external damage, obstructions and corrosion, including micro-cracks. We also test the inverter and meter.
Do solar panels need cleaning?
Many panels are self-cleaning, but we suggest a professional clean at least twice a year, especially after severe weather such as heavy snowfall. You can book ad-hoc cleans or include them in a maintenance package.
Can you check my panels after a storm?
Yes. If you cannot reach them yourself, our team can inspect them for damage after heavy snow or lightning storms.
How long can solar panels last?
Well looked after, up to 30 years.
Ready to book? Send the form or give us a ring.
Is your system performing as it should?
Book a solar PV health check and find out. Free, no-obligation quote.