20 Best Window Companies in Smithtown, NY (2025 Reviews)
Are you looking to upgrade your windows? Our guide to the best window installation companies can help you choose the right one for you.
We analyzed all the top-rated window companies in Smithtown 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
A guide on the top window replacement companies in Smithtown may not seem like the most riveting article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. During the winter months, the last thing you want is your heat to leak out of your drafty windows.
Replacement windows improve your home’s insulation, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
So if you’re building a new home, renovating or updating your windows in Smithtown, you’ve found the best place to get started.
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 Smithtown
The EcoWatch team examined dozens of providers that service the Smithtown area to find the best window installation companies by our standards. The providers in this article scored best in our review categories, which include energy-efficient offerings, price, customer service, availability, local expertise 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 provides windows expertise in Smithtown. This window installation company has been operating since 1995 and currently provides services to 200 locations nationwide.
Window World may be the company for you if you're looking for 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 WindowsThere are a wide variety of window types that Window World offers, some of which are Energy Star products. 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 Smithtown?Prices aren’t mentioned on Window World’s website, but it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate pricing information.

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 provides the best availability in Smithtown. This window installation company has been operating since 1995 and currently provides services to nearly every state except Mississippi and West Virginia.
Andersen may be the company for you if you're looking for 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 WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Smithtown?Prices aren’t mentioned on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Receiving a free quote on its website is the best way to get more accurate pricing information.
One thing to note is that the companies in this section are national, meaning the quality of customer service may vary depending on your local team. We have tried to be unbiased and transparent by mentioning both pros and cons for each provider.
More Window Companies in Smithtown
Renewal by Andersen of Long Island
Farmingdale, NYEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Skylights
Glass Doors
Power Home Remodeling
Melville, NYFree assessment
Good Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTEducational Website
Free assessment
Price Transparency
Services Offered
Bay Windows
Glass Doors
Custom Window Designs
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Flawless Glass & Mirror LLC
Holbrook, NYEducational Website
Owner-operated small business
Good Customer Service
Price Transparency
Free assessment
Customized glass options
Free in-home consultation
Services Offered
Mirrors
Glass Showers
Window Replacement/Installation
United Home Experts
Norwalk, CTFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Fiberglass Frames
Window Replacement/Installation
Window Depot USA of Southern CT
Trumbull, CTTimely Service
Good Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Double-Hung
Vinyl Frames
Triple Pane Glass
Glass Doors
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Greenwich Windows Replacement
Greenwich, CTPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Doors & Windows
Albertson, NYFree assessment
Online product shopping
Good Customer Service
Free in-home or virtual consultation
Sunday availability
Price Transparency
Educational Website
Services Offered
Vinyl Frames
Wood Frames
Bay Windows
Double-Hung
Window Replacement/Installation
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Good Customer Service
Labor warranties available
Free assessment
Price Transparency
Free same-day estimates
Services Offered
Window Replacement/Installation
M & R Windows
Bronx, NYPrice Transparency
Timely Service
Services Offered
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYOver 50,000 installations completed
Free assessment
Timely Service
Price Transparency
No-construction services available
Trademark soundproof Citiwindows
Educational Website
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Custom Window Designs
Aspen Home Remodeling, LLC.
Oradell, NJPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Skylights
Energy-Efficient Options
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJ24-hour emergency service
Free in-home consultation
Good Customer Service
Saturday and Sunday availability
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
United Windows And Glass Repair LLC
Brooklyn, NYEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Repair
Window Replacement/Installation
Double-Hung
Glass Repair
Bay Windows
Tempered Glass
Ben Window & Glass
Brooklyn, NYWide selection
Price Transparency
Foggy window repair
Weekend availability
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
F5 Remodeling
Rutherford, NJFree assessment
Full-service installation
Family-owned and operated
Good Customer Service
Educational Website
Price Transparency
Minority-owned and operated
Services Offered
Window Replacement/Installation
Smithtown Window Replacement and Doors
Smithtown, NYFamily-owned and operated
Educational Website
Energy-efficient windows and doors
Good Customer Service
Price Transparency
Weekend availability
Free assessment
Services Offered
Double-Hung
Wood Frames
Glass Doors
Bay Windows
Tempered Glass
Window Replacement/Installation
Triple Pane Glass
Fiberglass Frames
Storm/Impact Windows
Window Repair
Energy-Efficient Options
Glass Showers
Vinyl Frames
Custom Window Designs
Metal Frames
Mr. Handyman of Huntington and Smithtown
East Northport, NYTimely Service
Good Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Bay Windows
Window Replacement/Installation
Window Repair
Calculate how much you can expect to pay for window installation and replacement in Smithtown, 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 Smithtown Saves You Money
By switching to energy-efficient windows, you and your family can take advantage of several benefits, such as:
- Save on energy bills: Since energy-efficient windows decrease the amount of energy used to heat or cool your home, the switch can help you save around $215 annually on your energy bills in Smithtown.
- Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
- Reduce your carbon footprint: By using less energy once upgrading to Energy Star certified windows, you’ll also be decreasing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its value.
Estimated Cost of Window Replacement in Smithtown
Let’s go over the cost of installing new windows and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Generally, Smithtown homeowners can expect their window replacements to range from $250 to $1,200. The most common installations sit at about $600. This is because the cost of window installations depend on several factors specific to your home, including the size, material and number of windows you need to install, as well as where your property is located.
It’s important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars by decreasing your energy bills. Investing in certified energy-efficient windows can save Smithtown homeowners $215+ a year when replacing single-pane windows.
Costs will also vary depending on the material of your frame. Aluminum frames have the lowest price. They’re sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and offer good insulation. Composite frames made from wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first thing to ask yourself when getting new windows is: Do you want a full-frame installation or a pocket installation?
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations require more time and labor and will increase overall costs. A pocket installation means replacing a window within the existing frame, which tends to be cheaper than a full-frame installation.
Your window installer should be able to help you choose which type of installation you need.
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 Smithtown
EcoWatch is different from most reviewers since we’re examining these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and assigned rankings based on the following methodology:
Service Area
Since this is a guide for Smithtown, we only included companies that cover the city. There are certainly other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Smithtown.
Work Quality
We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company featured on this list to make sure its technicians are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the most customer satisfaction. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including warranty, cost, quality of parts, quality of installation, professionalism and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers’ prices, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. That’s why window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Smithtown, NY Window Replacement FAQs
What is the average cost to install new windows in a home?
The national average cost of replacing one window is around $600 but can range from $200 to $1,200, depending on a few different factors. The price is generally dependent on the size of the window, the location of your property and the type and material of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
Which kind of window should I get?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don’t open are more efficient than windows that do. If you want to be sure you’ll get the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.
Can I replace my own windows?
Although it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Hiring a professional can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.
When is the best time of year to replace windows?
Though you can install windows any time of year, warmer weather is typically better for replacing windows. Additionally, the weather should be dry, as rain can make the installation harder.