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Best Window Replacement Companies in Central Islip, NY

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Written By Max Peterson | Last Updated: February 05, 2024

You might be installing new windows to upgrade your home's appearance, use less energy, or protect your home from the rain and gusty winds. If your windows are deteriorating or showing signs of damage, it's probably time to get new ones. Working with a licensed window contractor will help you get the most satisfactory results and help you avoid costly mistakes from trying to complete the job yourself the job yourself.

Top Pick
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 Central Islip Window Installation Companies

We've assembled this list of contractors that specialize in window replacement in Central Islip.

Central Islip residents can trust the This Old House Reviews Team to provide relevant, up-to-date window company recommendations. To find out the best companies, we consider these five elements:

  • Product quality
  • Services and warranties
  • Customer reviews and recommendations
  • Professional experience and licensure
  • Energy-efficiency guarantees

Window World of Long Island Logo

Window World of Long Island

Based on 424 customer reviews.

Services Offered

Glass Doors Window Replacement/installation Double-Hung Custom Window Designs Bay Windows Energy-Efficient Options


  • Free assessment
  • Timely service
  • Price transparency
33 Hempstead Tpke, Farmingdale, NY 516-377-3500 windowworldlongisland.com
Flawless Glass & Mirror LLC Logo

Flawless Glass & Mirror

Based on 27 customer reviews.

Services Offered

Window Replacement/installation Mirrors Glass Showers


  • Educational website
  • Free assessment
  • Good customer service
1350 Lincoln Ave # 10, Holbrook, NY 631-275-0485 flawlessglassandmirror.com
Smithtown Window Replacement and Doors Logo

Smithtown Window Replacement and Doors

Based on 16 customer reviews.

Services Offered

Custom Window Designs Metal Frames Fiberglass Frames Vinyl Frames Double-Hung Bay Windows Tempered Glass Glass Doors Window Repair Wood Frames Energy-Efficient Options Triple Pane Glass Window Replacement/installation Glass Showers Storm/impact Windows


  • Price transparency
  • Free assessment
  • Educational website
43 Landing Ave, Smithtown, NY 631-646-2386 smithtownwindowsdoors.com
Mr. Handyman of Huntington and Smithtown Logo

Mr. Handyman of Huntington and Smithtown

Based on 270 customer reviews.

Services Offered

Window Replacement/installation Bay Windows Window Repair


  • Educational website
  • Free assessment
  • Price transparency
514 Larkfield Rd Suite 8, East Northport, NY 631-257-3213 mrhandyman.com
Pro Quality Home Improvements Inc. Logo

Pro Quality Home Improvements

Based on 36 customer reviews.

Services Offered

Bay Windows Energy-Efficient Options Window Repair Window Replacement/installation Skylights Glass Doors


  • Good customer service
  • Free assessment
  • Timely service
1120 Little East Neck Road, West Babylon, NY 631-393-6812 proqualityhomeimprovements.com
Good Guys Contracting Logo

Good Guys Contracting

Based on 59 customer reviews.

Services Offered

Bay Windows Metal Frames Window Replacement/installation Energy-Efficient Options


  • Free assessment
  • Good customer service
  • Educational website
441 Broadway, West Babylon, NY 631-559-6420 goodguyscontracting.com
EcoView Windows of Long Island Logo

EcoView Windows of Long Island

Based on 42 customer reviews.

Services Offered

Window Replacement/installation Bay Windows Energy-Efficient Options Glass Doors Double-Hung


  • Educational website
  • Free assessment
  • Good customer service
54 Enter Ln, Islandia, NY 631-538-4731 ecoviewwindowsli.com
Clear Image Glass & Mirror Logo

Clear Image Glass & Mirror

Based on 33 customer reviews.

Services Offered

Mirrors Skylights Glass Doors Window Replacement/installation Glass Showers


  • Free assessment
  • Educational website
  • Price transparency
2069-71 Middle Country Rd, Centereach, NY 631-580-5888 clearimagestorefronts.com
Tri State Window Factory Logo

Tri State Window Factory

Based on 129 customer reviews.

Services Offered

Glass Doors Window Replacement/installation Vinyl Frames


  • Free assessment
  • Timely service
  • Good customer service
360 Marcus Blvd, Deer Park, NY 631-667-8600 tristatewindowfactory.com

More Local Window Companies

Four Seasons Sunrooms

User Reviews: 4.4/5 

5005 Veterans Memorial Hwy
Holbrook, NY 11741

Glass Doctor

User Reviews: 4.3/5 

354 Smithtown Blvd
Ronkonkoma, NY 11779

Coram Glass & Mirror Inc

User Reviews: 4.2/5 

88-D Johnson Ave
Ronkonkoma, NY 11779

Unified Home Remodeling

User Reviews: 4.2/5 

298 Medford Ave
Patchogue, NY 11772

Sayville Custom Mirrors Inc

User Reviews: 4.1/5 

251 W Main St
Sayville, NY 11782

Homestead Window Treatments

User Reviews: 4.6/5 

11 Walt Whitman Rd
Huntington Station, NY 11746

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Central Islip
Annual Energy Efficient Windows Savings: $215
Average Max Temp: 55°F
Average Min Temp: 49°F
Average Daily Sunlight: 58%
Average Annual Snowfall: 27.4"
Average Monthly Precipitation: 3.90"

Expert Tips By

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How To Choose a Window Company in Central Islip

Trustworthiness is important when it comes to choosing a window installer. However, your chosen company should also match your needs and respect your vision. Consider the following factors during your company search:

Window Cost by Type

When you're shopping for new windows, it's crucial to remember that there's more to cost than just purchase price. You want a window with top-notch quality and durability. Although premium windows may cost more upfront, they often provide better long-term value due to their extended lifespan. The size, material, and style of your new windows have the greatest impact on your final cost. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while a custom-cut arch window in a master suite will cost more. If you're unsure, a window company can help you figure out which options are ideal for your home.

To help you form a rough estimate, this table shows the typical cost of the most common residential window types.

Window Types Average Cost
Arched $248-$1525
Awning $359-$1001
Bay $828-$6147
Custom $368-$1024
Casement $286-$1661
Double-hung $133-$865
Egress $245-$613
Glass Block $49-$621
Picture $215-$1593
Single-hung $97-$1639
Skylight $122-$1479
Sliding $282-$1434
Storm $58-$405
Transom $300-$628

Window Material Cost

Materials also help determine a window's cost. You might choose a material based on the local climate, your desired look, and your energy efficiency goals. For example, wood windows can give your home an organic design without breaking the bank, but you'll have to invest more toward maintenance. Aluminum and composite windows cost more up-front, but they're incredibly durable against the elements, so you'll spend far less on maintenance.

Window Types Average Cost
Aluminum $58-$1639
Composite $591-$1329
Fiberglass $97-$828
Vinyl $199-$1844
Wood $295-$1661

Other Window Replacement Costs

Ask each installer you're evaluating about warranty fees, labor costs, and permit fees. This will help you gain a complete understanding of the total costs involved in the project.

Experience and Training

Peruse a company's website and chat with a representative to learn more about its product and service offerings, pricing, and guarantees. Many companies also keep online portfolios that showcase past projects.

Ensure that the company focuses on window replacement. The more dedicated instruction its staff has, and the longer it has been in business, the more likely it will deliver top-notch craftsmanship.

Licensing and Credentials

New York's state government doesn't issue contracting licenses for window installers, but this hasn't stopped local governments from stepping in and creating their own licenses. For example, to install windows in New York City, a company must secure a Home Improvement Contractor License by passing exams and ecological assessments.

Types of Windows Offered

The style of window you want should factor into your company choice. Not every contractor will necessarily be familiar with the types you want. A company website will provide more about the styles of windows it specializes in, such as:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Also, check the kind of window framing materials a company works with. Each material has varying price points, life spans, and energy performance capabilities. Common materials include fiberglass, composite, wood, aluminum and vinyl.

Customer Feedback

Perhaps the best way to screen window companies for your job is to see what previous customers have said about them. Read customer reviews on sites such as Trustpilot, Yelp, and Google. You can also view customer reviews and company ratings on the Better Business Bureau (BBB) website. Talk to people you know who have used the company you're interested in, and ask a representative for professional references.

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Frequently Asked Questions About Window Replacement in Central Islip

What are the benefits of hiring a window installer?

Replacing your windows is a substantial purchase that greatly impacts your home's comfort and energy performance. Hiring a skilled window installer to supervise your project ensures your windows will be the right size, perform efficiently, and be properly insulated. Companies also typically include a guarantee that covers required maintenance and most future repairs.

Are there tax incentives for installing energy-efficient windows?

Yes. No matter where you're located, you can claim a federal tax credit of up to $3,200 per year on up to 30% of your window replacement's cost. Further, most state and some local governments offer tax credits of their own. We recommend contacting your local energy department for specific information about tax incentives available in your area.

How can I fix a broken window screen?

Most broken screens are quite easy to fix. For small tears, some window service providers might provide you with a repair kit that use strong adhesive patches. If your installer doesn't include a kit, you can buy one for about $5–$10 at a hardware store.

You might need to change the screen for large tears or those along the edges of the window. A window company you trust can get the job done at a reasonable cost.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology


Energy Star