20 Best Window Companies in Stony Brook, NY (2025 Reviews)
If you’re looking to upgrade to new windows, our guide to the top window installation companies can help.
We analyzed all the top-rated window companies in Stony Brook and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
The EcoWatch team is all about finding solutions for eco-conscious homeowners in Stony Brook. Drafty or leaky windows can cut your home’s energy efficiency by up to 30%, according to the Department of Energy. In Stony Brook, that’s about $215 per year that you could save on your power bills after making the switch.
That’s bad news for both your wallet and the environment, but one of the top window installation companies can help with that.
Because windows have such a considerable impact on your home, selecting the right company for you is a big choice to make. That’s why the EcoWatch team has curated this list of the best window installation companies, so you can make an informed decision more easily.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Stony Brook
The EcoWatch team assessed dozens of installers across the country to find the best window installation companies for our readers. We assessed the installers based on their energy-efficient offerings, local experience, price, customer service, coverage area and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World offers windows expertise in Stony Brook. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the windows industry, and it currently serves 200 locations nationwide. The company has many positive reviews from customers on online review websites.
Window World may be the company for you if you want one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Stony Brook?Though prices are not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. Getting a free quote on its website is the best way to know for sure.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen offers the best availability in Stony Brook. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the windows industry, and it currently serves nearly every state except Mississippi and West Virginia. The company has many positive reviews from customers on online review websites.
Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Stony Brook?Though prices are not readily available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to know for sure.
We’ve recommended installers with shining reputations, but keep in mind these are national companies, so your service may differ depending on your local crew. We have tried to remain unbiased and transparent by mentioning pros and cons for each company reviewed.
More Window Companies in Stony Brook
Renewal by Andersen of Long Island
Farmingdale, NYEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Bay Windows
Glass Doors
Double-Hung
Window Replacement/Installation
Skylights
Power Home Remodeling
Melville, NYPrice Transparency
Good Customer Service
Free assessment
Timely Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTPrice Transparency
Free assessment
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Glass Doors
Double-Hung
Flawless Glass & Mirror LLC
Holbrook, NYEducational Website
Free assessment
Free in-home consultation
Price Transparency
Good Customer Service
Owner-operated small business
Customized glass options
Services Offered
Mirrors
Window Replacement/Installation
Glass Showers
United Home Experts
Norwalk, CTPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Fiberglass Frames
Window Depot USA of Southern CT
Trumbull, CTEducational Website
Good Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Bay Windows
Triple Pane Glass
Window Replacement/Installation
Double-Hung
Glass Doors
Vinyl Frames
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Energy-Efficient Options
Window Replacement/Installation
Vinyl Frames
Greenwich Windows Replacement
Greenwich, CTPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Doors & Windows
Albertson, NYSunday availability
Free assessment
Online product shopping
Free in-home or virtual consultation
Educational Website
Good Customer Service
Price Transparency
Services Offered
Bay Windows
Wood Frames
Vinyl Frames
Window Replacement/Installation
Double-Hung
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Good Customer Service
Free same-day estimates
Free assessment
Price Transparency
Labor warranties available
Services Offered
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYNo-construction services available
Good Customer Service
Over 50,000 installations completed
Timely Service
Trademark soundproof Citiwindows
Educational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Custom Window Designs
Aspen Home Remodeling, LLC.
Oradell, NJEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJFree assessment
Saturday and Sunday availability
24-hour emergency service
Price Transparency
Educational Website
Free in-home consultation
Good Customer Service
Services Offered
Window Replacement/Installation
United Windows And Glass Repair LLC
Brooklyn, NYPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Tempered Glass
Energy-Efficient Options
Window Repair
Window Replacement/Installation
Double-Hung
Bay Windows
Glass Repair
Smithtown Window Replacement and Doors
Smithtown, NYEducational Website
Good Customer Service
Family-owned and operated
Energy-efficient windows and doors
Price Transparency
Free assessment
Weekend availability
Services Offered
Custom Window Designs
Window Repair
Tempered Glass
Window Replacement/Installation
Fiberglass Frames
Metal Frames
Bay Windows
Wood Frames
Storm/Impact Windows
Vinyl Frames
Double-Hung
Energy-Efficient Options
Triple Pane Glass
Glass Showers
Glass Doors
Mr. Handyman of Huntington and Smithtown
East Northport, NYPrice Transparency
Free assessment
Good Customer Service
Timely Service
Educational Website
Services Offered
Window Repair
Bay Windows
Window Replacement/Installation
Homestead Window Treatments
Huntington Station, NYPrice Transparency
Free assessment
Educational Website
Good Customer Service
Family-owned and operated
Saturday availability
Online appointment scheduling
Services Offered
Window Replacement/Installation
Custom Window Designs
MK Window Treatments
Greenwich, CTFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Stony Brook, NY using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Stony Brook Saves You Money
There are quite a few benefits of switching to energy-efficient windows. Some reasons you may want to consider making the change include the following:
- Decrease your carbon footprint: In Stony Brook, you can lower your indirect greenhouse gas emissions by about 307 pounds per year when you upgrade to energy-efficient windows.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
- Save on power bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of residential energy use. Installing energy-efficient models can help decrease how much energy is used in your home, therefore saving you about 12% more on your bills.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes usually have windows that are outdated, drafty or maybe even damaged in some way. Upgrading your windows could help increase the value of your home if you decide to sell.
Estimated Cost of Window Replacement in Stony Brook
Windows come in various shapes and sizes, so costs and services will differ considerably. Here are the typical costs and services that you’ll find from the average window installation company.
How Much Do New Windows Cost?
The average cost to replace one window is about $600 but can range from $200 to $1,200. Costs will vary considerably depending on your location, the quality of your products, the number of windows you need and the current condition of your home. A lot of window companies also offer door installations and other add-ons like baths, shutters, coating and more. These extra services will increase your overall project costs.
Whether or not you pick energy-efficient windows is another factor that will affect the cost. These will usually cost more than other windows, but on the other hand, you can save about $215 a year on your energy bills in Stony Brook.
How much your window installation costs will also vary depending on the kind of window material you choose for the frames. Wood windows are generally the most expensive, though it depends on whether they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
The first step when considering a window installation is to figure out whether you want a full-frame or pocket installation.
A full-frame installation is a replacement of the full window. This service involves taking out the old window, the sill, and the exterior and interior trim. It also involves other materials, including insulation and drip edges, which raise the overall cost of the project. Also worth noting: it’s not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. Pocket installations are simpler and won’t cost as much, as they entail merely replacing the window within its existing frame. But if the frame has any damage, you should opt for a full-frame installation instead.
If you’re hiring a reputable window installation company, your company can advise you on the best type for your project. In Stony Brook, the choice will mostly depend on the efficiency of your home and how old your existing frames are.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Stony Brook
EcoWatch reviews are different from most reviews because we examine these companies through a sustainability lens. Along with energy efficiency, we assessed each installer and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Stony Brook so you can find the best window installation company near you.
Work Quality
When choosing new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the type of window you opt for. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across most other categories, including professionalism, warranty, cost, quality of parts, quality of installation and more.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing providers’ prices, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed, windows are a sizable investment, so you’ll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Stony Brook, NY Window Replacement FAQs
How much does a window install cost?
The typical cost to install one window can range between $450 and $650. There are many factors that affect the price, which include styles and sizes of windows, the number of windows, the materials used in designing the windows, local labor costs, your property’s location and how energy-efficient the windows are.
What type of window is the most energy-efficient?
A window’s energy efficiency is affected by a number of factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are typically the most energy-efficient since they are certified by the U.S. Department of Energy.
When should I use a window installation company?
You should use a window installation professional whenever you want to upgrade your windows. Installing windows is a complex process that can be difficult and time-consuming, so it’s best handled by the professionals.
How often do you need to replace your windows?
Windows typically have a lifespan of about 20 to 30 years, but anytime you see damage on your windows, it’s a good idea to have an expert take a look at them to see if they are in need of a repair or replacement.