22 Best Window Replacement Companies in Islip, NY (2023 Reviews)
Window Companies Near Me

If you're looking to upgrade to new windows, our guide to the best window installation companies can help.

We analyzed all the top window installers in Islip and selected the top 22 based on:

  • Customer reviews
  • Window replacement expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated March 14, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

The EcoWatch Reviews team is all about finding solutions for eco-conscious homeowners in Islip. During the winter months, the last thing you want is your heat to leak out of your outdated windows.

That's not great for either your wallet or the environment, but one of the top window installation companies can help with that.

Because windows are so important for your home, choosing the right company for you is a big choice to make. That's why the EcoWatch team has made this list of the best window installation companies, so you can make an informed decision more easily.

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • Large serice area
  • Lifetime warranty
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Manufactures products in-house
  • Award-winning company
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Lifetime warranty
  • Manufactures products in-house
  • Wide variety of products and services
  • Quality of service will depend on your area

Best Window Replacement Companies in Islip

The EcoWatch team assessed dozens of installers across the country to find the top window replacement companies for our readers. We assessed the companies on energy-efficient offerings, coverage area, local experience, price, customer service and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Low prices relative to competitors
  • Pros icon Large serice area
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World is 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 provides services to 200 locations nationwide. The provider has a lot of positive reviews from customers on online review websites.

It has established itself as a company 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 Windows

Window World appeals to eco-conscious consumers by providing energy-efficient window offerings. 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 Islip?

Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about the cost.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Manufactures products in-house
  • Pros icon Award-winning company
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Islip. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia.

It 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 Windows

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. Not all of Andersen's windows are Energy Star certified, so be sure to mention that you're interested in Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Islip?

Prices aren't listed 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. You can request a free quote on its website for more information about the cost.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Lifetime warranty
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Quality of service will depend on your area

Universal Windows Direct has the best warranty in Islip. This company has been in business since 2002 and currently services 27 states nationwide. The company has many positive reviews from customers on online review websites.

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 Windows

There are a wide range of window types available from Universal Windows Direct, some of which are Energy Star products. 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 Islip?

Even though prices are not readily available on Universal's website, 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. Requesting a free quote on its website is the best way to get more accurate information.

We strive to be unbiased and transparent by describing pros and cons for each installer. Additionally, any partnerships do not affect our reviews.

More Window Replacement Companies in Islip

Sky Windows and Doors

Freeport, NY
4.7
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Excellent Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.skywindowsnj.com/
Address: 145 N Main St, Freeport, NY 11520
Phone: (516) 686-8485

Renewal by Andersen of Long Island

Farmingdale, NY
4.6
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Free Quotes
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://www.renewalbyandersen.com/window-company/800-long-island-ny/retailer
Address: 2029 New Hwy, Farmingdale, NY 11735
Phone: (631) 843-1713

Renewal by Andersen

Stamford, CT
4.3
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Locally Recognized for Quality
  • Pros icon Good Customer Service
  • Pros icon Reliable Service

Services Offered

  • Service icon Custom Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay & Bow Windows

Website: https://www.renewalbyandersen.com/window-company/710-westchester/retailer
Address: 2041 W Main St, Stamford, CT 06902
Phone: (203) 406-0545

Pella Windows & Doors of Roslyn Heights

Roslyn Heights, NY
4.2
★★★★★
  • Pros icon Reliable Service
  • Pros icon Locally Recognized for Quality
  • Pros icon Free Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.pellabranch.com/long-island/showrooms/roslyn-heights/
Address: 79 Powerhouse Rd, Roslyn Heights, NY 11577
Phone: (516) 938-7655

Storefront Glass & Metal

Huntington Station, NY
4.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Free Quotes
  • Pros icon Reliable Appointment Windows
  • Pros icon Dependable Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Heavy Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.storefrontglassandmetal.com/
Address: 505 E Jericho Turnpike, Huntington Station, NY 11746
Phone: (516) 522-1203

Mr. Handyman of Upper Fairfield County

Fairfield, CT
4.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Reliable Appointment Windows
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Commercial Windows

Website: https://www.mrhandyman.com/upper-fairfield-county/
Address: 2480 Black Rock Turnpike, Fairfield, CT 06825
Phone: (866) 550-1710

The Window People

Stamford, CT
4.1
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.thewindowpeople.net/
Address: 42 Magee Ave, Stamford, CT 06902
Phone: (203) 323-1804

Window Depot Usa Of Lower NY

South Hempstead, NY
3.9
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Locally Recognized for Quality
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://windowdepotlowerny.com/
Address: 1096 Grand Ave, South Hempstead, NY 11550
Phone: (516) 564-4400

Sears Window Replacement

New Rochelle, NY
3.9
★★★★★
  • Pros icon Dependable Service
  • Pros icon Arrives on Time
  • Pros icon Excellent Customer Service
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.searshomeservices.com/locations/hi/window-replacement/ny/newrochelle
Address: 5 Plain Ave, New Rochelle, NY 10801
Phone: (914) 243-1427

Tri State Window Factory

Deer Park, NY
3.9
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Award-Winning
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Fast Delivery
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.tristatewindowfactory.com/
Address: 360 Marcus Blvd, Deer Park, NY 11729
Phone: (631) 667-8600

Tri State Window Factory

Seaford, NY
3.9
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Locally Recognized for Quality
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Windows
  • Service icon Fast Delivery
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.tristatewindowfactory.com/
Address: 3657 Merrick Rd, Seaford, NY 11783
Phone: (800) 645-4568

Window World of Long Island

Farmingdale, NY
3.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Reliable Service
  • Pros icon Reliable Appointment Windows
  • Pros icon Price Transparency

Services Offered

  • Service icon Fast Delivery
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.windowworldlongisland.com/
Address: 33 Hempstead Turnpike, Farmingdale, NY 11735
Phone: (516) 377-3500

Long Island Storefronts

Shirley, NY
3.8
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Free Quotes

Services Offered

  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung

Website: https://www.longislandglassandstorefronts.com/
Address: 60 Northern Blvd Ste #2, Shirley, NY 11967
Phone: (631) 803-8346

Lowe's Home Improvement

Riverhead, NY
3.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Reliable Service
  • Pros icon Good Customer Service
  • Pros icon Free Quotes

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.google.com/aclk
Address: Riverhead, NY
Phone: (631) 208-2190

Window King of Connecticut

Stamford, CT
3.7
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Timely Service
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://windowking.biz/
Address: Stamford, CT
Phone: (203) 717-4910

Cascella And Sons Construction Corp.

Central Islip, NY
3.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Consistent Workmanship
  • Pros icon Free Quotes
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: https://www.cascellaandsons.com/
Address: 70 Carleton Ave, Central Islip, NY 11722
Phone: (631) 582-0100

THE GLASS EMPORIUM INC.

Kings Park, NY
3.6
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Free Quotes
  • Pros icon Timely Service
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Heavy Glass
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://glassemporium.biz/
Address: 132 Pulaski Rd, Kings Park, NY 11754
Phone: (631) 544-4284

Mike the Glazier Inc

Mineola, NY
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Full-Service Installations
  • Service icon Custom Windows

Website: http://www.miketheglazier.com/
Address: 133 E Jericho Turnpike, Mineola, NY 11501
Phone: (516) 248-1900

Mikita Door & Window

Freeport, NY
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Appointment Windows
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Bay & Bow Windows

Website: https://mikitadoorandwindow.com/
Address: 136 W Sunrise Hwy, Freeport, NY 11520
Phone: (516) 867-4100

Mike The Glazier

Flushing, NY
3.6
★★★★★
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing
  • Pros icon Reliable Appointment Windows
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Full-Service Installations
  • Service icon Custom Windows

Website: http://miketheglazier.com/
Address: 35-18 Linden Pl, Flushing, NY 11354
Phone: (718) 353-5555

Sears Window Replacement

East Northport, NY
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Dependable Service
  • Pros icon Award-Winning
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.searshomeservices.com/locations/hi/window-replacement/ny/east-northport
Address: 4000 Jericho Turnpike, East Northport, NY 11731
Phone: (631) 606-2190

Competition Glass

Port Washington, NY
3.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Consistent Workmanship
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.competitionglassny.com/
Address: 439 Main St, Port Washington, NY 11050
Phone: (516) 883-3200

How Installing Energy-Efficient Windows in Islip Saves You Money

By switching to energy-efficient windows, you can take advantage of several benefits, including:

  • Decrease your carbon footprint: In Islip, you can cut your indirect greenhouse gas emissions by about 307 pounds per year after you upgrade to energy-efficient windows.
  • Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out harmful UV rays.
  • Save money on electricity bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of household energy use. Installing energy-efficient models can help reduce how much you have to pay, therefore saving you about 12% more on your bills.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, especially if your home is on the older side.

Estimated Cost of Window Replacement in Islip

Windows come in various shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you'll find from window installation companies.

How Much Do New Windows Cost?

According to our research, the typical cost to replace a single window is about $600. However, window replacement costs can range from $200 to $1,200 a window. These numbers vary based on specific characteristics of your installation, like material, number of windows, the location of your home, size, type and more.

With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more initially, 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, purchasing certified energy-efficient windows can save Islip homeowners $215+ each year after replacing single-pane windows.

We recommend getting free quotes from several window installers to find the one that works best for your budget.

What Services do Window Installers Offer?

In general, there are two kinds of window installation services companies offer: full-frame and pocket installations.

Full-frame installations involve replacing the full window, including the frame, trim and sill. You most likely need a full-frame installation when you want to change the style of your windows or your window has noticeable damage. Full-frame installations are more involved and will increase the overall cost. Pocket installations (or retrofits) entail replacing a window within the existing frame, which makes pocket installations more simple and affordable. But, if the frame has any rot or deterioration, you will likely need a full-frame installation instead.

Your window installation company should be able to help you figure out which type of installation you need.

Best Affordability

Window World

★★★★★
4.5

  • Low prices relative to competitors
  • Large serice area
  • Lifetime warranty
  • Quality of service will depend on your area

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Manufactures products in-house
  • Award-winning company
  • More expensive than competition

Best Warranty

Universal Windows Direct

★★★★★
4

  • Lifetime warranty
  • Manufactures products in-house
  • Wide variety of products and services
  • Quality of service will depend on your area

How We Choose the Best Window Installers in Islip

EcoWatch is different from most reviewers because we assess these companies through a sustainability lens. We have reviewed the top window replacement companies in Islip mainly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows have been shown to cut your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

This one is pretty self-explanatory, but we've chosen to highlight window installers that serve the Islip area so you can find the best window installation company near you.

Work Quality

We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each installer featured in our guide to make sure its contractors are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent customer feedback to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including professionalism, quality of installation, quality of parts, warranty, cost and more.

Cost

Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important to many homeowners. That's why window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Due to Islip's climate, homeowners need to be wary of rot, low efficiency and water damage. We factored in local experience to reflect the ability of Islip window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

Islip, NY Window Replacement FAQs

How much should window installation cost?

The national average cost to replace a single window is around $600 but can range from $200 to $1,200, depending on several factors. The price is often influenced by the type and material of the window, the location of your property and the size of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.

Which kind of window is the best?

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're getting the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — this means they're certified energy-efficient by the U.S. Department of Energy.

Do I really have to use a window installation company?

Unless you have home repair skills and have the tools needed to replace your own windows, we recommend hiring a professional. The process of installing windows is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to save money by doing it yourself, hiring a company is a faster, more efficient and safer option.

How long does window installation typically take?

Each window takes about 30 minutes to install depending on the type of window. However, the window installation can be a two-day job — or more — if you have a lot of windows that must be installed.

When is it time to replace your windows?

Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Other than that, if your windows have any damage on them, or they have become difficult to open or close, they may be in need of replacement.

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