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TRUSTED BY ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon103
    Verified window cleaning services reviews

Top-Rated Window cleaners in Islip - Updated Nov 2026

Avatar for Clearly Clean Windows
Clearly Clean Windows
4.9(
64
)
Window Cleaning

Serving Islip, NY and surrounding areas

Approved

In business since 1999

Free estimates

Customers say: Quick response

"Keith is the best!! He has been cleaning my windows for the last 10 years. Keith does a very thorough job cleaning the windows, screens and window sills."
Window Cleaning
Window Cleaning
Window Cleaning
Response time1 day
14 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Hamlet Window Cleaning & Power Washing
Hamlet Window Cleaning & Power Washing
4.5(
181
)
Window Cleaning

Serving Islip, NY and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"My only complaint is that as they cleaned the outside of the windows, they did not use a towel at the bottom to catch drips from the squeegee on the bottom ledge of the black-framed windows which left watermarks and drips below the window on the white siding. The owner is very friendly and the couple who cleaned was nice but not thorough enough for the price I paid."
Recommended by92%of homeowners
Avatar for ECOTEC COMMERCIAL CLEANING LLC
ECOTEC COMMERCIAL CLEANING LLC
5.0(
6
)
Window CleaningWindow Cleaning - For Business

Serving Islip, NY and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

Precision Cleaning for Professional Spaces.\n\nAt EcoTec Commercial Cleaning, cleaning is more than a service. It’s a commitment to protecting people and elevating the places where work happens. Because when these spaces are clean, safe, and cared for, businesses in Long Island thrive.\n\nWe offer much more than just spotless tile and dust-free countertops. We focus on delivering great service to people, giving you, your employees, and your customers spaces that are consistently clean, safe, and professionally maintained.\n\nEcoTec’s Custodial Technicians are professionally trained to clean and disinfect a wide variety of environments using eco-friendly, EPA-approved products and proven, industry-approved techniques. This approach ensures high standards of sanitation while supporting healthier indoor environments for employees, customers, and visitors.

9 neighbors recently requested a quote
Avatar for Q's Exterior Cleaning Service, LLC
Q's Exterior Cleaning Service, LLC
5.0(
1
)
Window Cleaning

Serving Islip, NY and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of quality power washing, gutter cleaning, and window washing services. You will find us to be affordable with close attention to the details of each and every project that we are involved with. We always strive to meet our customer's needs. We look forward to building lasting relationships and guarantee your satisfaction!

Response time1 day
Recommended by100%of homeowners
Avatar for Paulino’s Cleaning Solutions
Paulino’s Cleaning Solutions
New to Angi
Window Cleaning

Serving Islip, NY and surrounding areas

Approved

Paulino’s Cleaning Solutions is committed to delivering reliable, high-quality exterior cleaning services with attention to detail and customer satisfaction. We specialize in window cleaning, power washing, gutter cleaning, and general exterior maintenance. Our goal is to leave every property looking clean, professional, and well cared for. Contact us for dependable service and free estimates.

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Window Cleaning FAQs, answered by experts

The best homemade cleaning solution for windows is one gallon of warm, distilled or bottled water mixed with five to ten drops of liquid dish soap. This is what professional window cleaners typically use when they make their cleaning solutions. Using bottled or distilled water will help avoid hard water stains after cleaning, and the soap will cut through grease, smudges, and debris on your glass.

All of the things you use to help you get clean can leave your shower door looking dirty. Water can leave mineral deposits as well as unsightly spots when drops of water dry on the glass. Soap and shampoo can cause build-up and residue that leaves a layer of soap scum in your shower, which then attracts dirt. Mold and mildew can also contribute to dirty shower doors; these fast-growing organisms thrive in areas with poor air circulation, damp conditions, and residue from things like soap and shampoo.

Yes, you should plan on being home when a window cleaner is cleaning your windows. The professional will clean both sides of the glass and will likely disassemble parts of your windows from the inside to clean and inspect the inner components, including the balances and weatherstripping. Much of this work requires interior access to your home, which means someone will need to be home to provide access to the window cleaner.

At least twice a year, but frequency depends on location and exposure to elements.

Soot can be harder to remove compared to other types of stains given its acidic nature. It can also cause underlying paint to peel off during the cleaning process. If your soot issue is a result of smoke damage, it’s recommended you call a pro to help remove it versus doing it yourself.

The Islip, NY homeowners’ guide to window cleaning services

From average costs to expert advice, get all the answers you need to get your job done.