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TRUSTED BY EAST ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon84
    Verified window cleaning services reviews

Top-Rated Window cleaners in East Islip - Updated Nov 2026

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

Serving East 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 East Islip, NY and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"The 2 workers went above and beyond. Made a badly stained and mildewed awning look brand new. Keith also fixed 2 door screens that had been pushed out by my grandchildren and my dog by accident. I did not ask he just did it. And Mary came back in the house to look into a smudge in a window that I look out of all the time. No attitude, just happy to take care of it. Very pleasant to have around. Had no qualms over having them in my house. Ron, you have a great crew."
Recommended by92%of homeowners
Avatar for ECOTEC COMMERCIAL CLEANING LLC
ECOTEC COMMERCIAL CLEANING LLC
5.0(
6
)
Window CleaningWindow Cleaning - For Business

Serving East 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.

23 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 East 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
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Window Cleaning FAQs, answered by experts

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

The best thing to clean windows with is a mixture of white vinegar, warm water, and dish soap. This will remove dirt, pollen, and grime without destroying any tints or protective films on your glass. You can also use a commercial window cleaner, but make sure to choose one that doesn’t have ammonia in it, as this can damage window coverings and frame materials over time.

Yes, professional window cleaning is worth the investment. Regular deep cleanings help keep your windows looking new, extend their lifespan, and boost your home's curb appeal. By removing dirt, dust, and other debris, you can reduce the risk of damage and accelerated wear to window frames and components. It also improves your home’s energy efficiency by keeping insulation and weatherstripping in good working order, potentially lowering your energy bills. Furthermore, annual or bi-annual cleanings can help identify problems like leaks or cracks early, before they escalate into expensive water damage. You can often recuperate the cost of cleaning through energy savings and by avoiding premature window replacement.

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.

In most cases, you should get your windows cleaned one to two times annually, although you might want to complete this task more often if you live in an area with heavy pollen or heavy rain or snowfall that soils your windows. It’s also a good idea to hire a professional window cleaning service if you’re listing your property, as sparkling windows will make a big difference in terms of curb appeal and, potentially, your home’s value.

The East 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.