20 Best Window Companies in Smithtown, NY (2023 Reviews)
If you're looking to get new windows, our list of the best window installation companies can help.
We analyzed all the top-rated window companies in Smithtown and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Whether you're doing home renovations or have old windows, windows play a key role in conserving your home's electricity. If your house has traditional, outdated windows, your HVAC system could be working extra hard to heat or cool your home. This means higher electricity bills.
That's also bad for the environment, as the additional energy used by outdated windows increases your carbon footprint.
Unlike other review sites, EcoWatch ranks window companies based on energy efficiency while also balancing cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Smithtown
The EcoWatch team examined dozens of providers that service the Smithtown area to find the top window installation companies that fit our standards. We assessed the companies on energy-efficient offerings, coverage area, customer service, local experience, price and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World provides windows expertise in Smithtown. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window industry for about 27 years.
If you’re looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the perfect company for you.
Energy Efficiency of Window World WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you 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 Smithtown?Prices are not available on Window World’s website, as the cost of window installment differs based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. If you’d like more accurate pricing information, you can request a quote on the company’s website.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the windows industry, and it has become one of the most respected companies in Smithtown. The provider has hundreds of positive reviews from customers on online review websites.
It has established itself as a company 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 range of window types available from Renewal by Andersen, 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?Andersen does not mention prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to receive a free quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct has the best warranty in Smithtown. This provider has 20 years of experience in the windows business, and it has proved to be one of the most respected companies in the business. The provider has plenty of glowing reviews from customers on online review websites.
Universal may be the company for you if you want one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThe company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products. Not all of Universal’s offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Smithtown?Prices aren’t listed on Universal’s website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. Receiving a free quote on its website is the best way to get more accurate pricing information.
We aim to be unbiased and transparent by describing pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Smithtown
Renewal by Andersen of Long Island
Farmingdale, NY-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Double-Hung
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Stained Glass
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Commercial Windows
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Residential Windows
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Sliding Glass
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Bay Windows
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Window Replacement
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Glass Showers
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Custom Window Designs
Window World of Long Island
Farmingdale, NY-
Timely Service
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Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Commercial Windows
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Residential Windows
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Sliding Glass
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Bay Windows
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Stained Glass
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Tempered Glass
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Fast Delivery
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Window Replacement
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Glass Showers
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Custom Window Designs
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Double-Hung
Window Nation
Wallingford, CT-
Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Stained Glass
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Residential Windows
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Custom Window Designs
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Bay Windows
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Window Replacement
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Energy-Efficient Options
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Sliding Glass
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Double-Hung
Glass Doctor
Ronkonkoma, NY-
Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Sliding Glass
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Residential Windows
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Window Repair
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Window Replacement
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Full-Service Installations
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Double-Hung
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Fast Delivery
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Glass Showers
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Custom Window Designs
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Commercial Windows
EcoView Windows of Long Island
Islandia, NY-
Price Transparency
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Educational Website
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Good Customer Service
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Free assessment
Services Offered
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Window Replacement
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Custom Window Designs
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Residential Windows
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Double-Hung
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Sliding Glass
All Pro Remodeling Corp
Mt Sinai, NY-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Sliding Glass
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Double-Hung
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Energy-Efficient Options
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Custom Window Designs
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Residential Windows
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Window Replacement
Smithtown Window Replacement and Doors
Smithtown, NY-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Bay Windows
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Energy-Efficient Options
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Fast Delivery
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Window Replacement
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Residential Windows
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Double-Hung
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Custom Window Designs
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Glass Showers
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Commercial Windows
Home Services at The Home Depot
Commack, NY-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Double-Hung
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Window Replacement
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Custom Window Designs
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Stained Glass
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Fast Delivery
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Commercial Windows
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Glass Showers
AT Home Remodeling Inc Holbrook N.Y. 11741
Holbrook, NY-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Custom Window Designs
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Residential Windows
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Window Replacement
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Aluminum Window Frames
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Double-Hung
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Fast Delivery
Sunview Enterprise Inc
Setauket- East Setauket, NY-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Bay Windows
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Full-Service Installations
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Energy-Efficient Options
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Residential Windows
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Window Replacement
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Double-Hung
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Custom Window Designs
Coram Glass & Mirror Inc
Ronkonkoma, NY-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Glass Showers
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Window Replacement
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Commercial Windows
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Fast Delivery
Flawless Glass & Mirror LLC
Holbrook, NY-
Price Transparency
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Educational Website
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Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Window Replacement
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Residential Windows
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Window Repair
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Glass Showers
Four Seasons Sunrooms
Holbrook, NY-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Energy-Efficient Options
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Window Replacement
Long Island Window & Door Ltd
Commack, NY-
Price Transparency
Services Offered
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Window Repair
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Window Replacement
New York Glass And StoreFront
Huntington Station, NY-
Free assessment
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Timely Service
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Window Repair
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Aluminum Window Frames
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Glass Showers
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Tempered Glass
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Residential Windows
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Double-Hung
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Commercial Windows
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Window Replacement
Patchogue Window Installation
Brookhaven, NY-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Commercial Windows
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Sliding Glass
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Energy-Efficient Options
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Custom Window Designs
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Bay Windows
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Fast Delivery
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Double-Hung
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Residential Windows
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Stained Glass
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Window Replacement
Pro Quality Home Improvements Inc.
West Babylon, NY-
Good Customer Service
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Timely Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Commercial Windows
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Window Replacement
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Energy-Efficient Options
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Residential Windows
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Bay Windows
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Custom Window Designs
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Window Repair
Home Comfort Practice, Inc.
Stratford, CT-
Timely Service
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Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Energy-Efficient Options
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Window Replacement
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Commercial Windows
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Glass Showers
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Residential Windows
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Custom Window Designs
Ener-G Tech, Inc.
Stratford, CT-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Commercial Windows
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Energy-Efficient Options
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Glass Showers
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Window Replacement
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Custom Window Designs
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Residential Windows
Standard Glass
Bridgeport, CT-
Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Fast Delivery
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Double-Hung
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Commercial Windows
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Residential Windows
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Window Replacement
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Glass Showers
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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
When you switch to energy-efficient windows, you may see some perks, such as:
- Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help raise the value of your home if you decide to sell.
- More efficient energy usage in your home: Because the summers can get quite hot in Smithtown, homeowners usually depend on their air conditioner a lot. Energy-efficient windows decrease how much cool air is lost through your windows, making it easier to keep your house cool.
- More efficient energy usage in your household: In Smithtown where the winters can get very cold, energy-efficient windows reduce how much heat is lost through your windows, which makes it easier to keep your home warm.
- Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Smithtown, that's about 307 pounds per year on average.
Estimated Cost of Window Replacement in Smithtown
Windows come in different shapes and sizes, so costs and services will differ tremendously. Here are the average costs and services that you can find from window installation companies.
How Much Do New Windows Cost?
According to our market research, the average cost of replacing a single window is around $600. However, window installation costs can range from $200 to $1,200 per window. How much it will cost depends on several factors, such as number of windows, the location of your home, material, size, type and more.
It's important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Smithtown homeowners $215+ a year when replacing single-pane windows.
How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are typically the most expensive, though it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
The first thing to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?
Full-frame installations involve replacing the whole 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 a great amount of deterioration. Full-frame installations are more comprehensive and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are on the simpler end and will be less expensive, but you can't do this kind of installment if you have any pre-existing rot or water damage.
If you're not sure which type of window installation service you need, your installer should be able to assist you. Generally, the decision is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Smithtown
EcoWatch reviews are different from most reviews because we evaluate these companies through a sustainability lens. We have assessed the best window installers in Smithtown mostly based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy Star certified windows can cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Since this is a guide for Smithtown, we gave more points to companies that provide services to the city. There are certainly reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Smithtown.
Work Quality
When choosing new windows, the quality and breadth of services often plays just as important of a role in overall efficiency and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to determine the companies with the most consistent customer satisfaction. Customer satisfaction may be the factor we place the most value on, as it indicates the quality of services across nearly every category, including quality of installation, warranty, professionalism, quality of parts, cost and more.
Cost
This one is a give-and-take: as with other services, cheap window installers may not provide the highest quality service. On the other hand, we want to make sure we're highlighting companies that offer a spectrum of price and financing options so they're accessible to most homeowners.
Warranty
As discussed, windows are a sizable investment, so you'll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Smithtown's climate, homeowners will want to mitigate water damage, rot and low efficiency. We factored in local experience to reflect the ability of Smithtown window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Smithtown, NY Window Replacement FAQs
How much does window installation cost?
The national average cost to install a window is around $600 but can range between $200 and $1,200, depending on several factors. The price is typically dependent on the size of the window, the location of your property and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the different kinds of windows?
The most common types of windows for homes include: double-hung and single-hung windows, picture windows, slider windows, awning windows, casement windows, bay windows and transom windows.
What services do window installation companies provide?
Window installation professionals visit your home to remove your old windows and replace them with new ones. Some providers install products manufactured by other companies, whereas others install their own windows. The installer will also clean up after the installation is complete.
Should I replace all my windows at the same time?
If your windows are greater than 20 years old, you most likely need to replace all of them. By that point, they are often less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.