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DIY Versus Professional Solar Panel Cleaning
When DIY Can Be Reasonable
- Ground mount arrays you can reach while standing on the ground
- Light dust, using a soft brush or sponge on a pole and plain water
- Cool panels, early morning or evening
When To Hire A Professional
- Any panel you can only reach by climbing on the roof
- Steep, two story, or slippery roofs
- Stuck on droppings, sap, or heavy buildup
- Wiring or bird nesting you can see under the panels
Falls from roofs are a serious hazard. Solar panels are also electrical equipment with a shock risk (Bob Vila guide to cleaning solar panels). Do not climb up to clean them yourself.
What Can Cause Damage
- Pressure washers and abrasive materials can damage the glass, and scratching it can lower output and potentially void a warranty (EnergySage on solar panel cleaning).
- Cold water on hot panels can crack them, which is why guides suggest cleaning when panels are cool (Bob Vila guide to cleaning solar panels).
Check Your Warranty
EnergySage on solar panel cleaning notes that damaging the glass can potentially void a warranty. Look up your panel brand's care instructions before anyone cleans or attaches anything.
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