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    Average homeowner rating
  • Verified reviews icon125
    Verified window cleaning services reviews

Top-Rated Window cleaners in Flower Hill - Updated Nov 2026

Avatar for ECOTEC COMMERCIAL CLEANING LLC
ECOTEC COMMERCIAL CLEANING LLC
5.0(
6
)
Window CleaningWindow Cleaning - For Business

Serving Flower Hill, 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 G&N Clean Service LLC
G&N Clean Service LLC
4.5(
8
)
Window Cleaning

Serving Flower Hill, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

I am the owner and operator of G&N Clean Service LLC, a professional cleaning company focused on delivering reliable, high-quality commercial and residential cleaning services. I bring hands-on experience in daily operations, team management, and quality control, with a strong emphasis on punctuality, consistency, and professional work ethics. My goal is to build long-term partnerships by providing dependable service and maintaining clean, safe, and well-maintained spaces for every client

6 neighbors recently requested a quote
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Window Cleaning FAQs, answered by experts

Well water can leave ugly marks on your window. A vinegar-water spray will remove most well water stains from your windows. However, you can also use a baking soda paste if the stain is too stubborn. Consider applying waterproofing protection to the glass surface after cleaning for long-term protection. A protective film or spray layer also makes it easier to remove the water stains next time.

Whether you tip before or after a carpet cleaning depends on when you’re available. If you’re home when they finish up, you can give them their tip after. However, if you need to leave before they’re done or if you won’t be home at all, you can prepare the tip beforehand and leave it for them in an envelope.

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.

Do not mix bleach with vinegar, ammonia, acidic liquids, or other cleaners or detergents as toxic fumes result from the chemical reaction. Mix bleach only with water to avoid dangerous chemical reactions. Even mixed with water to dilute it, bleach can still be harmful to your skin, eyes, and lungs.

The simplest way to clean stained glass windows is by using warm distilled water and a damp cloth. Distilled water won’t corrode the stained glass or leave residue behind. Avoid using cleaners with alcohol or ammonia. However, you should only clean when necessary. Stained glass windows are fragile, and excessive cleaning could cause fading, weakening of the solder, or other damage.

The Flower Hill, NY homeowners’ guide to window cleaning services

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