Solar Panel Cleaning

Recover lost solar output with pure-water cleaning

Pollen, bird droppings, and PNW grime can quietly steal up to 30% of your panel output. We restore peak efficiency with safe, manufacturer-approved techniques.

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Why It Matters

What you get with PeakFlow

Up to 30% more output

Studies show neglected panels lose 5–30% efficiency.

Manufacturer approved

Pure water + soft bristles meet warranty conditions.

Zero panel damage

No high pressure, no chemicals, no walking on the array.

Streak-free finish

De-ionized water dries spotless every time.

Our Process

Safe, methodical, no shortcuts

  • Inspection of every panel for damage, sealing issues, and buildup
  • Ground-based water-fed pole reaches panels safely from below
  • Soft-bristle brush gently lifts pollen, sap, and droppings
  • 100% pure de-ionized water rinse — dries with zero residue
  • Final walkthrough so you can see the difference

Serving Western Washington

Local, fully insured, and trusted across the greater Seattle area.

Why us

Why homeowners choose PeakFlow

A locally-owned, fully-insured exterior cleaning team using the methods manufacturers actually recommend.

Fully insured

General liability + workers' comp. COI available before the job.

Locally owned

Founder-operated in Western Washington. You'll talk to the owner.

Manufacturer-approved method

Pure de-ionized water and soft-bristle poles — safe for panels and glass.

Free re-clean guarantee

If anything isn't right within 14 days of service, we come back and fix it — no charge.

Questions about your property? Call or text the owner directly — (206) 794-9508

FAQ

Common questions

How often should I clean my solar panels in Washington?

Every 6–12 months for most homes. Properties surrounded by evergreens, near farms, or with low-pitch roofs benefit from twice-yearly service.

Does rain clean my panels?

No. Rain can rinse light dust but leaves behind pollen, sap, droppings, and mineral spots. As water evaporates, contaminants concentrate — often making panels dirtier.

Is pressure washing safe for solar panels?

Never. High pressure can crack micro-seals, damage anti-reflective coatings, and void warranties. We exclusively use low-pressure pure water.

How long does it take?

Most residential systems (15–30 panels) take 60–90 minutes from arrival to walkthrough.

Ready to recover your solar output?

Same-day quote response. Local, insured, and on time.

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