Common Solar Panel Problems Phoenix Homeowners Should Watch For

Sep 1

3 min read

Solar panels are built to spend years outside, but Phoenix homeowners should still keep an eye on the condition of their systems.

Dust, bird activity, hard water, storms, and work performed by other contractors can all create problems around a solar array.

Here are some of the main things to watch for.

Dust and Dirt Buildup

Phoenix is dry and dusty for much of the year.

Over time, solar panels can collect:

Dust
Pollen
Bird droppings
Leaves
Other airborne debris

Rain may remove some loose material, but it does not always leave the panels completely clean.

If buildup becomes noticeable, Cheetah provides solar panel cleaning in Phoenix.

Pigeons Nesting Under Solar Panels

One of the more serious problems to watch for is pigeons repeatedly going underneath the array.

The gap between solar panels and the roof can create a protected space where pigeons may roost or build nests.

Because that area is mostly hidden, homeowners may not realize how much debris has accumulated underneath.

Watch for pigeons disappearing under the panels, concentrated bird droppings, feathers, or nesting material around the roof.

Bird Droppings on the Panels

Bird droppings can create concentrated dirty areas on the glass.

Unlike loose dust, droppings may remain even after rain.

If the same areas quickly become covered again after cleaning, there may be a larger bird problem around the roof.

Removing the surface contamination helps clean the panels, but it does not stop pigeons from returning to an accessible nesting area underneath them.

Hard Water Spots

Hard water can leave mineral deposits behind when it dries.

This can happen when:

Sprinklers reach the panels
A hose repeatedly sprays the array
Panels are cleaned with untreated hard water and allowed to dry

If irrigation is reaching your solar panels, redirecting it can help prevent additional buildup.

Debris Underneath the Array

Leaves, feathers, nesting material, and other debris can collect beneath solar panels.

A small amount of debris does not necessarily mean pigeons are nesting there.

However, repeated bird activity combined with significant material underneath the array can indicate an established problem.

If pigeons have been nesting there for years, the buildup may be much greater than what you can see from the ground.

Loose or Damaged Bird Mesh

If your panels already have pigeon-proofing mesh installed, occasionally look around the perimeter.

Bird mesh can be disturbed during:

Solar repairs
Roof work
HVAC service
Other work near the array

If a section becomes loose or is removed and not properly restored, pigeons may be able to get underneath again.

Problems After Another Contractor Works on the Roof

Solar technicians, roofers, and HVAC technicians may all need to work around your solar system.

After the work is finished, take a quick look at the area.

You are mainly checking for anything that appears different, such as loose mesh, moved materials, or obvious roof damage.

If a technician needed to remove part of the pigeon proofing for access, make sure it was properly reinstalled.

Cracked or Displaced Roof Tiles

Sometimes the solar panels themselves are fine while the surrounding roof needs attention.

Phoenix homes with tile roofs can develop cracked or displaced tiles for a variety of reasons.

If you notice damaged roofing around the array, have the roof evaluated by a qualified roofer.

Solar panel cleaning or pigeon proofing does not replace roof repair.

Sudden Changes in Solar Production

Gradual surface buildup is different from a sudden major drop in solar production.

If your system unexpectedly begins producing much less electricity, contact your solar provider or a qualified solar technician.

The issue could involve wiring, an inverter, electrical equipment, or another part of the system that requires solar-specific diagnosis.

Check the Array After Major Storms

Phoenix monsoon storms can bring strong wind, rain, and blowing debris.

After a major storm, visually check the solar system from the ground.

Look for obvious debris, displaced materials, or anything around the array that appears different.

You do not need to climb onto the roof just to perform a basic visual check.

The Bottom Line

Phoenix homeowners do not need to constantly inspect their solar panels, but completely ignoring the system is not ideal either.

Periodically look for dirt buildup, hard water spots, bird droppings, pigeons entering underneath the panels, loose bird mesh, roof damage, and anything that changes after storms or contractor work.

For local help, Cheetah provides solar panel cleaning in Phoenix and pigeon control in Phoenix.