The Truth About Solar Panel Maintenance

Set and Forget? Not Quite.

Solar panels are durable, but they aren't magic. Dirt, bird droppings, and lichen can significantly impact performance over time.

Do You Need Professional Cleaning?

The Short Answer: Yes, usually once every 1-2 years.

The Details: While rain washes away loose dust, it doesn't remove stuck-on grime or bird droppings (which can actually etch the glass and cause hot spots). A professional clean can restore 5-10% of lost output.

The Inverter: The Weakest Link

Maintenance isn't just about cleaning panels. The most common failure point is the inverter. A "solar health check" every 5 years should include:

• Checking the inverter for error codes or heat damage.
• Inspecting DC isolators (switches) on the roof for water ingress (a common fire hazard).
• Checking cabling for UV damage or rodent chewing.

DIY Warning

Don't get up on the roof with a high-pressure hose. You can crack the seals on the panels or damage the electrical connections. Use a soft brush and water if you must DIY, but safety (heights + water) is a major risk. Professional cleaners are worth the investment.