26 Best Window Replacement Companies in Mastic, NY (Mar 2023)
Window Companies Near Me
When it's time to upgrade your windows, our reviews of the best window installation companies can help you find the right provider for you.
We analyzed all the top window installers in Mastic and selected the top 26 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Although clean energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home's efficiency can also have a large impact on home energy conservation. If your windows are drafty or damaged, you could be sending 25-30% of your house's heat or cool air out of them.
That's not great for either your wallet or the environment, but one of the best window installation companies can help with that.
So if you're building a new home, renovating or changing out old windows in Mastic, this is the best place to get started.
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Lifetime warranty
- Manufactures products in-house
- Makes charitable contributions
- Some installations carried out by third-party contractors
Best Window Replacement Companies in Mastic
The EcoWatch team assessed dozens of installers across the country to find the best window installation companies for our readers. The companies we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

Renewal by Andersen
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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
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window replacement business. The company has a lot of positive reviews from customers on online review websites.
You may want to consider choosing Andersen if you're interested in a installer 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 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 Mastic?Prices aren't displayed 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. Requesting a free quote on its website is the best way to know for sure.

Window World
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EnergyStar Partner
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Lifetime warranty
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Large serice area
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Quality of service will depend on your area
Window World offers windows expertise in Mastic. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for around 27 years. The company has a lot of glowing reviews from customers on online review websites.
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, Window World may be the right provider for you.
Energy Efficiency of Window World WindowsThere are a wide range of window types available from Window World, 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 Mastic?While prices are not readily available on Window World's website, it's known for offering some of the most affordable window installations around. For more accurate information on pricing, you can ask for a quote from the company.

Universal Windows Direct
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Lifetime warranty
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Manufactures products in-house
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Makes charitable contributions
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Some installations carried out by third-party contractors
Universal Windows Direct provides the best warranty in Mastic. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of experience in the window replacement industry. Hundreds of positive reviews from customers online back the provider's reputation.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct's commitment to sustainability can be seen in its energy-efficient window offerings. The 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.
How much does Universal Windows Direct cost in Mastic?Prices are not available on Universal's website because the cost of window replacement differs based on how many and what type(s) of windows you need. However, 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. Getting a free quote on its website is the best way to get more accurate information.
One thing to note is that the companies in this section are national, which means the quality of customer service may depend on your local crew. We have tried to be unbiased and transparent by describing both pros and cons for each provider.
More Window Replacement Companies in Mastic
Renewal by Andersen of Long Island
Farmingdale, NY-
No-Hassle Pricing
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Consistent Workmanship
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Arrives on Time
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Good Customer Service
Services Offered
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Fast Delivery
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Custom Windows
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Commercial Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay Windows
Renewal by Andersen - Branford
Branford, CT-
Educational Website
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Excellent Customer Service
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Locally Recognized for Quality
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Consistent Workmanship
Services Offered
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Residential Windows
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Custom Window Designs
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Storefront Glass & Metal
Huntington Station, NY-
Educational Website
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Reliable Appointment Windows
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Good Customer Service
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Dependable Service
Services Offered
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Architectural Glass
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Heavy Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Mr. Handyman of Upper Fairfield County
Fairfield, CT-
Educational Website
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No-Hassle Pricing
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Dependable Service
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Locally Recognized for Quality
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Business Windows
North Shore Window Inc.
Bridgehampton, NY-
Free Quotes
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Price Transparency
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Consistent Workmanship
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Excellent Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Fast Delivery
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Custom Windows
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Aluminum Window Frames
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Double-Hung
Eastern Glass & Shower Door
Milford, CT-
Educational Website
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No-Hassle Pricing
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Excellent Customer Service
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No-fee Quotes
Services Offered
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Doors
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Full-Service Installations
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Custom Windows
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Tempered Glass
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
Tri State Window Factory
Deer Park, NY-
Arrives on Time
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Reliable Service
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Locally Recognized for Quality
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Helps Educate Customers
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
Reliable Appointment Windows
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Educational Website
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Price Transparency
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No-fee Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Window World of Long Island
Farmingdale, NY-
Helps Educate Customers
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Arrives on Time
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No-fee Quotes
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Dependable Service
Services Offered
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Fast Delivery
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Tempered Glass
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Custom Window Designs
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Double-Hung
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Sliding Glass
Long Island Storefronts
Shirley, NY-
Locally Recognized for Quality
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Good Customer Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
Lowe's Home Improvement
Riverhead, NY-
Educational Website
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Excellent Customer Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Cascella And Sons Construction Corp.
Central Islip, NY-
No-Hassle Pricing
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Free Quotes
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Educational Website
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Charitable Giving
Services Offered
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Custom Windows
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Business Windows
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Double-Hung
THE GLASS EMPORIUM INC.
Kings Park, NY-
Price Transparency
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No-fee Quotes
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Arrives on Time
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Excellent Customer Service
Services Offered
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Residential Windows
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Heavy Glass
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Tempered Glass
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Custom Window Designs
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Business Windows
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Double-Hung
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Sliding Glass
Ring's End
Branford, CT-
Excellent Customer Service
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No-Hassle Pricing
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Educational Website
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Free Quotes
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Sears Window Replacement
East Northport, NY-
Educational Website
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No-fee Quotes
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Price Transparency
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Excellent Customer Service
Services Offered
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Sliding Glass
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Custom Windows
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Energy-Efficient Options
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Double-Hung
A Plus Exterior LLC
Milford, CT-
Dependable Service
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No-fee Quotes
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Timely Service
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Excellent Customer Service
Services Offered
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Custom Windows
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Sliding Glass
Unified Home Remodeling
Patchogue, NY-
No-fee Quotes
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Good Customer Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Double-Hung
Anderson Glass
West Haven, CT-
No-Hassle Pricing
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Excellent Customer Service
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Educational Website
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Dependable Service
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
Right Angle Roofing & Siding
Patchogue, NY-
Excellent Customer Service
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Helps Educate Customers
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Consistent Workmanship
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Arrives on Time
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
Wallace Design Center
Southold, NY-
Free Quotes
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Good Customer Service
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Reliable Service
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Sliding Glass
Fox Glass Company East
Hicksville, NY-
No-fee Quotes
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Price Transparency
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Reliable Service
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Excellent Customer Service
Services Offered
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Custom Windows
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Express Way Siding Repair Replacement And New Installation Long Island
Southampton, NY-
Price Transparency
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Free Quotes
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Good Customer Service
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Timely Service
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Double-Hung
Zajac Home Improvement
Lindenhurst, NY-
Award-Winning
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Good Customer Service
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No-fee Quotes
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Educational Website
Services Offered
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Glass Showers
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Custom Windows
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Residential Windows
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Double-Hung
SUBURBAN GLASS
Central Islip, NY-
Excellent Customer Service
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No-fee Quotes
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Consistent Workmanship
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Price Transparency
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Sliding Glass
Harbor Interiors Inc
Southampton, NY-
No-Hassle Pricing
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Educational Website
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Gives to charity
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No-fee Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Double-Hung
East Shore Glass
East Haven, CT-
Good Customer Service
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No-fee Quotes
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Price Transparency
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Helps Educate Customers
Services Offered
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Business Windows
How Installing Energy-Efficient Windows in Mastic Saves You Money
Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on energy bills. Here are more ways switching out your windows could help you:
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Upgrading and repairing your windows is an important part of maintaining your property and its value.
- Decrease your carbon footprint: Since energy-efficient windows improve the insulation in your home, you can lower your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
- Save on energy bills: Once you upgrade to energy-efficient windows, you can see a reduction in your bills by about 12% because you'll use less energy to heat or cool your home.
Estimated Cost of Window Replacement in Mastic
Let's take a look at the cost of window installation and the kinds of services you may need for your home.
How Much Do New Windows Cost?
Typically, homeowners in Mastic can expect that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at about $600. How much it will cost varies depending on several factors, including material, the location of your home, number of windows, type, size and more.
With windows, efficiency is the most important factor for most homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Mastic homeowners $215+ each year after replacing single-pane windows.
Costs will also vary depending on the material you want for your window frames. Aluminum frames are the least expensive. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made using wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are generally two types of window installation services: full-frame and pocket installations.
Full-frame installations involve replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations involve more time and labor and will increase overall costs. A pocket installation involves replacing a window within the old frame. This means instead of taking out the whole window and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.
If you're unsure which type of window installation service you need, your installer can assist you. Generally, the decision depends on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best Affordability
Window World
- EnergyStar Partner
- Lifetime warranty
- Large serice area
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Lifetime warranty
- Manufactures products in-house
- Makes charitable contributions
- Some installations carried out by third-party contractors
How We Choose the Best Window Installers in Mastic
In our search to make your home improvements easier and more eco-friendly in Mastic, the EcoWatch Reviews team landed on the above companies as the top window installation companies in the city. We have evaluated the best window installation companies in Mastic mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since this is a guide for Mastic, we gave more points to companies that serve the city. There are other reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Mastic.
Work Quality
When choosing new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the type of window 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 find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including professionalism, quality of installation, quality of parts, cost, warranty and more.
Cost
This one is a give-and-take: as with most services, cheap window installers may not provide the most quality service. On the other hand, we want to ensure we're highlighting companies that provide a range 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 well protected. Window installation companies that offer 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 been in the industry for quite some time. Window installers that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Mastic, NY Window Replacement FAQs
How much does a window install cost?
The national average cost to replace a window is about $600 but can range from $200 to $1,200, based on a few different 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, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What kind of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that don't open are more efficient than windows that do. To be sure you'll have 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.
When do I have to use a window installation company?
Unless you're handy and have the tools needed to replace your own windows, we recommend hiring a professional installer. The window installation process is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and safer option.
How often should you replace windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they should probably be replaced. Other than that, if your windows have any damage on them, or they have become difficult to operate, they may need to be replaced.