What to Ask Before Hiring a Window Cleaning Company in Illinois

Letting someone onto a ladder against your siding, or into your home to clean interior glass, is a bigger decision than it might seem. Before you hire any window cleaning company in DuPage, Kane, Kendall, or Lake County, here are the questions worth asking.

1. "Are you insured?"

This is the single most important question. Window cleaning involves ladders, upper-story work, and being on or near your property's exterior. If a company isn't insured and something is damaged, you could be held financially responsible.

2. "How long have you been in business, and do you have local experience?"

A crew that regularly works in Wheaton or Naperville will know how to handle older single-pane and leaded glass windows common in DuPage County's historic homes.

3. "What's included in the price?"

Get clarity on whether screens and tracks are included or billed separately, and whether the quote covers interior and exterior or exterior only.

4. "What equipment and methods do you use?"

Ask how they handle second-story or hard-to-reach windows. This matters both for your safety and for the quality of the finish.

5. "Do you offer any guarantee?"

A company confident in its work should be willing to address streaks or missed spots after the job is done.

6. "Can I see reviews from customers in my area?"

Reviews from homeowners in your specific county or town tell you more than generic testimonials.

7. "How do you price recurring service vs. one-time cleanings?"

If you're considering a seasonal maintenance plan, ask how pricing compares to a one-time visit — more detail in our window cleaning cost guide.

What Sets P.E.C. Services Apart

We're fully insured and family-owned, serving DuPage, Kane, Kendall, and Lake counties since 1992. Every quote is transparent and free, with no pressure and no hidden fees.