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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon65
    Verified window services reviews

Top-Rated Window pros in Sag Harbor - Updated Nov 2026

Avatar for Power Home Remodeling
Power Home Remodeling
4.3(
6,546
)
New Windows - 6 +New Windows - 3-5

Serving Sag Harbor, 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

1662 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for CoolVu of North Nassau County
CoolVu of North Nassau County
5.0(
7
)
Window Tinting - Apply or Replace

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

CoolVu of Long Island is the most trusted window film installer serving Nassau and Suffolk Counties. We specialize in 4 types of window film: solar/energy film to lower your electric bill, privacy film, decorative film, and safety/security film that holds glass together during storms or break-ins.\n\nEvery job blocks 99% of UV rays and comes with a lifetime residential warranty. Free estimates always.\n\nOwner Paul Silverman handles every project personally — you deal directly with the owner, never a call center. Recognized by the Nassau County Advisory Board as a champion business. Serving all of Long Island.\n\nCall Paul: (516) 535-9555 | coolvulongisland.com

Project Photos
Project Photos
Response time2 days
Response rate100%
21 neighbors recently requested a quote
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Windows FAQs, answered by experts

Bay windows are not easy to install because they are heavy and require specific tools and woodworking experience. You’ll also need to install a roof cab, flashing, and shingles. Ensuring the window is level and sealed can be tricky but it is important because it prevents air leakage and water from entering your home. Most often, an experienced window pro should install bay windows.

Yes, egress windows must meet local building codes for size and accessibility. Professional installers ensure compliance.

Yes, selecting double glazing or low-E coatings to reduce energy costs.

Casement window types differ from standard windows in that they have a hinge on the side or the top of the window so that it can open inwards or outwards. If your casement windows open upward, they usually have a crank to operate them. Casement windows with side hinges typically operate like a door, opening and closing without a crank.

Energy-efficient windows are judged on their performance according to a few different factors, including heat transfer, air leakage, light transference, and condensation resistance. If you're unsure whether a window is energy-efficient, look for an ENERGY STAR® label from the U.S. Environmental Protection Agency (EPA). If various products, including windows, meet energy-efficiency standards set by the federal government, the EPA issues this label to help consumers identify energy-efficient products.

The Sag Harbor, NY homeowners’ guide to window services

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