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Top-Rated Window pros in Greenlawn - Updated Nov 2026

Avatar for Long Island Windows and Siding
Long Island Windows and Siding
4.5(
51
)
New Windows - 6 +

Serving Greenlawn, NY and surrounding areas

Approved

In business since 1966

Free estimates

Emergency services offered

"They addressed all of my concerns without hesitation and to my satisfaction. They gave me a fair price. I thought the workers were experienced and had a good technique of capping the windows to prevent water leakage. They exceeded my expectations."
Our Reputation
Reinforce Your Home
Expert Craftsmanship
Response time8 hrs
Response rate94%
34 neighbors recently requested a quote
Avatar for Power Home Remodeling
Power Home Remodeling
4.3(
6,546
)
New Windows - 6 +New Windows - 3-5

Serving Greenlawn, NY and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"Excellent workmanship and products I have had three installations with Power in the past two years. I first used them for a new roof and gutters. The workers were all knowledgeable in their area of work. Clean up was good although some nails kept showing up over time. Next I had the 2nd floor windows and some 1st floor windows replaced, 9 in total. Installation went well and they cleaned up beautifully afterwards. I love the windows! They are a beautiful and energy efficient product. Lastly, I recently had a bay window replaced in my kitchen with the same type window. The workers ere all friendly and explained what would be done. The area was draped with plastic to cut down on dust. Clean up was excellent inside and outside! The window is beautiful and the framing on the outside of the window matches the other windows and the small roof above the bay window was replaced with the same roofing as the rest of the house. I would choose them again for any future projects."
Double Hung & Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung
Double-Hung Window

+24

1640 neighbors recently requested a quote
Recommended by85%of homeowners
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Windows FAQs, answered by experts

Actually, condensation can mean that your windows are more energy efficient because the seal keeps cold air out and warm air in. In some cases, windows with poor seals can lead to more condensation, but they may allow the cold and warm air to mix and reduce condensation. If you’re worried about whether or not your windows are properly insulated, have a pro assess them.

Before purchasing, it’s good to weigh the pros and cons of vinyl windows. Vinyl windows offer several advantages over other types of windows. Vinyl windows are more affordable than most other window types, and they’re also very energy efficient. Vinyl windows are also low-maintenance, weather-resistant, and easy to install.

In short, it depends. After 20 years, the glass in your windows is less energy efficient, which can cause increased electricity bills. You might also see signs of water damage or natural wear and tear over the years. However, with proper maintenance, some window frames can last up to 50 years, so you may only need to replace the glass to save on energy. 

At the same time, window replacement is a major investment, so replacing the glass in rooms most impacted by outdoor temperatures is one way to avoid going all-in to replace your windows.

Glass block windows typically last for 15 to 30 years, which is slightly less than the 20- to 50-year lifespan of standard windows. You can extend their life by resealing them every few years. Professional installation is also key to ensuring the windows are placed correctly and will function properly for years to come. A professional installer will have the necessary skills, tools, and knowledge to install these features and can identify potential issues like damaged frames or cramped areas during a consultation.

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

The Greenlawn, NY homeowners’ guide to window services

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