20 Best Window Companies in Lake Ronkonkoma, NY (2025 Reviews)

Thinking about upgrading your home's windows? We’ve got you covered in this list of the best window installation companies.

We analyzed all the top-rated window companies in Lake Ronkonkoma and selected the best 20 based on:

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

By EcoWatch Local Advisors

Updated January 24, 2025

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.

Whether you're doing home renovations or have damaged windows, windows play a crucial role in conserving energy in your home. If your windows are drafty or damaged, you could be sending 25-30% of your home’s heat or cool air right out of them.

Luckily, helping you save money with upgraded windows also aligns with our goals of reducing energy usage for the environment.

So if you’re constructing a new home, renovating or changing out old windows in Lake Ronkonkoma, you’ve found the best place to get started.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Lake Ronkonkoma

The EcoWatch Reviews team researched dozens of window installation companies across Lake Ronkonkoma to narrow our list down to the best ones. The companies we’ve mentioned in this article passed our review standards for energy-efficient offerings as well as price, local expertise, customer service and beyond.

Window World logo
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • 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 about 27 years of experience in the window installation sector. The company has a lot of glowing reviews from customers online.

It 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for 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 Lake Ronkonkoma?

Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can get a quote on the company’s website.

Renewal by Andersen logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation sector. The company has a lot of glowing reviews from customers online.

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

Renewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Lake Ronkonkoma?

Andersen does not display 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. If you’d like more accurate information, you can get a quote on the company’s website.

We’ve recommended companies with shining reputations, but note that some national companies have independently owned locations in Lake Ronkonkoma, so the quality of service may vary depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for each company reviewed.

More Window Companies in Lake Ronkonkoma

Renewal by Andersen of Long Island

Farmingdale, NY
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Skylights
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation

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

Power Home Remodeling

Melville, NY
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://powerhrg.com/
Address: 1660 Walt Whitman Rd #140, Melville, NY 11747
Phone: (631) 339-7268

Window Nation

Wallingford, CT
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Glass Doors
  • Service icon Custom Window Designs
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: https://www.windownation.com/hartford-ct-showroom/
Address: 1070 N Farms Rd Unit 1, Wallingford, CT 06492
Phone: (475) 253-0015

Flawless Glass & Mirror LLC

Holbrook, NY
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Owner-operated small business
  • Pros icon Free in-home consultation
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Customized glass options
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Mirrors

Website: http://flawlessglassandmirror.com/
Address: 1350 Lincoln Ave # 10, Holbrook, NY 11741
Phone: (631) 275-0485

United Home Experts

Norwalk, CT
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Fiberglass Frames

Website: https://unitedhomeexperts.com/united-home-experts-norwalk-ct-06854-siding-roofing-windows-doors/
Address: 50 Washington St, Norwalk, CT 06854
Phone: (203) 718-0597

Doors & Windows

Albertson, NY
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free in-home or virtual consultation
  • Pros icon Good Customer Service
  • Pros icon Online product shopping
  • Pros icon Free assessment
  • Pros icon Sunday availability

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Double-Hung
  • Service icon Vinyl Frames

Website: http://usdoorswindows.com/
Address: 830 Willis Ave, Albertson, NY 11507
Phone: (516) 517-4328

Window Depot USA of Southern CT

Trumbull, CT
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Triple Pane Glass
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames

Website: http://windowdepotsouthernct.com/
Address: 5726 Main St STe 2a, Trumbull, CT 06611
Phone: (203) 309-6027

Parco Home Improvement Corp.

Franklin Square, NY
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options

Website: http://www.kpsearch.com/DF/Parco/all.asp
Address: 424 Dogwood Ave, Franklin Square, NY 11010
Phone: (516) 560-7626

Greenwich Windows Replacement

Greenwich, CT
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation

Website: http://www.greenwichwr.com/
Address: 777 West Putnam Avenue, Greenwich, CT 06830
Phone: (203) 424-3446

Edge Remodeling, Inc.

Franklin Square, NY
5.0
★★★★★
  • Pros icon Family-owned and operated
  • Pros icon Free assessment
  • Pros icon Labor warranties available
  • Pros icon Free same-day estimates
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://edgeremodelinginc.com/
Address: 1102 Hempstead Turnpike, Franklin Square, NY 11010
Phone: (516) 860-8630

Bert Falsetti's Home Improvement LLC

Shelton, CT
5.0
★★★★★

    Services Offered

    • Service icon Double-Hung
    • Service icon Vinyl Frames
    • Service icon Window Replacement/Installation
    • Service icon Energy-Efficient Options

    Website: http://bertfalsettillc.wix.com/falsetti
    Address: 56 Woodfield Dr, Shelton, CT 06484
    Phone: (203) 258-5177

    M & R Windows

    Bronx, NY
    5.0
    ★★★★★
    • Pros icon Timely Service
    • Pros icon Price Transparency

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://mandrwindows.com/
    Address: 4510 Bullard Ave, Bronx, NY 10470
    Phone: (718) 652-1300

    Cityproof Soundproof Windows

    Long Island City, NY
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Timely Service
    • Pros icon Educational Website
    • Pros icon Over 50,000 installations completed
    • Pros icon No-construction services available
    • Pros icon Free assessment
    • Pros icon Good Customer Service
    • Pros icon Trademark soundproof Citiwindows

    Services Offered

    • Service icon Energy-Efficient Options
    • Service icon Window Replacement/Installation
    • Service icon Custom Window Designs

    Website: https://www.cityproof.com/
    Address: 10-11 43rd Ave, Long Island City, NY 11101
    Phone: (718) 786-1600

    Aspen Home Remodeling, LLC.

    Oradell, NJ
    5.0
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Educational Website
    • Pros icon Free assessment
    • Pros icon Price Transparency

    Services Offered

    • Service icon Energy-Efficient Options
    • Service icon Skylights
    • Service icon Window Replacement/Installation

    Website: https://www.aspenhomeremodelingllc.com/
    Address: 700 Kinderkamack Rd #101, Oradell, NJ 07649
    Phone: (201) 994-5354

    United Windows And Glass Repair LLC

    Brooklyn, NY
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Educational Website
    • Pros icon Free assessment

    Services Offered

    • Service icon Double-Hung
    • Service icon Energy-Efficient Options
    • Service icon Window Repair
    • Service icon Bay Windows
    • Service icon Glass Repair
    • Service icon Tempered Glass
    • Service icon Window Replacement/Installation

    Website: https://www.unitedwindowsandglassrepair.com/
    Address: 8714 21st Ave, Brooklyn, NY 11214
    Phone: (929) 969-0867

    Ben Window & Glass

    Brooklyn, NY
    5.0
    ★★★★★
    • Pros icon Foggy window repair
    • Pros icon Wide selection
    • Pros icon Weekend availability
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Free assessment

    Services Offered

    • Service icon Window Replacement/Installation
    • Service icon Window Repair

    Website: https://benwindowglass.com/
    Address: 431 Bay Ridge Pkwy, Brooklyn, NY 11209
    Phone: (347) 799-0912

    HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry

    Hasbrouck Heights, NJ
    5.0
    ★★★★★
    • Pros icon 24-hour emergency service
    • Pros icon Saturday and Sunday availability
    • Pros icon Free in-home consultation
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Free assessment

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://www.hdlconstructionnj.com/
    Address: 184 Boulevard Apt A, Hasbrouck Heights, NJ 07604
    Phone: (201) 375-5437

    F5 Remodeling

    Rutherford, NJ
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Free assessment
    • Pros icon Full-service installation
    • Pros icon Family-owned and operated
    • Pros icon Minority-owned and operated
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Window Replacement/Installation

    Website: https://f5remodeling.com/
    Address: 8 Station Square #2, Rutherford, NJ 07070
    Phone: (551) 271-0650

    Smithtown Window Replacement and Doors

    Smithtown, NY
    4.9
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Weekend availability
    • Pros icon Energy-efficient windows and doors
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Family-owned and operated

    Services Offered

    • Service icon Wood Frames
    • Service icon Tempered Glass
    • Service icon Fiberglass Frames
    • Service icon Glass Doors
    • Service icon Metal Frames
    • Service icon Triple Pane Glass
    • Service icon Bay Windows
    • Service icon Window Repair
    • Service icon Glass Showers
    • Service icon Window Replacement/Installation
    • Service icon Storm/Impact Windows
    • Service icon Double-Hung
    • Service icon Vinyl Frames
    • Service icon Energy-Efficient Options
    • Service icon Custom Window Designs

    Website: https://smithtownwindowsdoors.com/
    Address: 43 Landing Ave, Smithtown, NY 11787
    Phone: (631) 646-2386

    Mr. Handyman of Huntington and Smithtown

    East Northport, NY
    4.9
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Good Customer Service
    • Pros icon Timely Service
    • Pros icon Price Transparency
    • Pros icon Educational Website

    Services Offered

    • Service icon Window Repair
    • Service icon Bay Windows
    • Service icon Window Replacement/Installation

    Website: https://www.mrhandyman.com/huntington-smithtown/
    Address: 514 Larkfield Rd Suite 8, East Northport, NY 11731
    Phone: (631) 257-3213
    Lake Ronkonkoma Window Cost Calculator

    Calculate how much you can expect to pay for window installation and replacement in Lake Ronkonkoma, NY using our customized window cost calculator.

    Estimated Window Cost:
    161 homeowners have requested a free estimate in the last 3 days.

    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 Lake Ronkonkoma Saves You Money

    Energy-efficient windows can offer benefits in several ways. Here are a few reasons you may want to take the plunge and make the switch:

    • Protect your investment: If you have a relatively old home, your windows are most likely outdated. Upgrading your windows can improve the insulation in your home and also help raise the value of your house if you decide to sell.
    • Save money on power bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
    • Decrease your carbon footprint: By using less energy once you switch to energy-efficient windows, you’ll also be lowering your indirect greenhouse gas emissions by about 12%, according to Energy Star.
    • Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.

    Estimated Cost of Window Replacement in Lake Ronkonkoma

    Each window installer provides varying services and has different prices based on several factors.

    How Much Do New Windows Cost?

    On average, homeowners in Lake Ronkonkoma can anticipate that most replacement window installations will cost between $250 and $1,200, with the average cost sitting at around $600. This is because of the fact that window installations are based on a variety of factors specific to your home, including the size, material and number of windows you need to replace, as well as the location of your property.

    It’s also worth bearing in mind that energy-efficient windows will typically cost more upfront, but Energy Star predicts that upgrading the windows on your Lake Ronkonkoma home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. The amount of money you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

    Costs will also vary based on the material of your frame. Aluminum frames cost the least. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made from wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.

    What Services do Window Installers Offer?

    The first thing to ask yourself when considering a window replacement is: Do you want a full-frame installation or a pocket installation?

    A full-frame installation is a total window replacement. It involves removing the old window, the windowsill, and the exterior and interior trim. It also involves extra materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations are on the simpler end and won’t cost as much because they entail simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.

    If you’re hiring a reputable window installation company, your company can advise you on the best type for your project. In Lake Ronkonkoma, the choice will mostly be influenced by how much damage there is currently and the age and condition of your existing frames.

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    Best Availability

    Renewal by Andersen

    ★★★★★
    4.5
    • Great Industry Reputation
    • Award-winning Company
    • Member of US Green Building Council
    • Manufactures products in-house
    Save $375 Off Each Window
    Get Estimate

    Power Home

    ★★★★★
    4.5
    • Uses eco-friendly materials
    • Well-trained, certified installers
    • Lifetime or lengthy warranty
    Next-Day Appointments Available
    Get Estimate

    Best for Residential Windows

    Window Nation

    ★★★★★
    4.0
    • Custom Designs
    • Wide variety of products and services
    • Manufactures products in-house

    How We Choose the Best Window Installers in Lake Ronkonkoma

    In our search to find the most reliable, eco-friendly window installers in Lake Ronkonkoma, the EcoWatch team examined many companies before deciding on these. We’ve evaluated the top window installers in Lake Ronkonkoma mainly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. 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

    This one is self-explanatory, but we’ve chosen to highlight window installers that serve the Lake Ronkonkoma area so you can find a quality window installation company near you.

    Work Quality

    We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer featured in our guide to make sure its technicians are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.

    Customer Reviews

    Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have nice things to say about their service from a certain installer, you won’t see it featured on EcoWatch.

    Cost

    Cheaper windows certainly don’t mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

    Warranty

    Protecting your investment in new windows is important. That’s why window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

    Years of Experience

    Last but not least, we like to see companies that have a proven track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

    Lake Ronkonkoma, NY Window Replacement FAQs

    What is the typical cost to replace windows?

    The average cost of installing a single window ranges from $450 to $650. There are a variety of factors that influence the cost, which include your property’s location, the number of windows, styles and sizes of windows, how energy-efficient the windows are, the materials used in designing the windows and local labor costs.

    What are the types of windows?

    The most common kinds of windows for homes include: awning windows, double-hung and single-hung windows, transom windows, picture windows, casement windows, bay windows and slider windows.

    What do window installation companies do?

    Window installers travel to your property to remove your old windows and replace them with new ones. Some providers install products manufactured by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is complete.

    Should I replace my windows all at the same time?

    If you’re upgrading your windows to get more efficient windows, replacing all of the windows at the same time is the only way to gain that benefit. On the other hand, if you have only one or two windows that are damaged or leaky, you can replace just those.