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
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Why you can trust EcoWatch
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.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- 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
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
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 WindowsWindow 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
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
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 WindowsRenewal 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, NYEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Skylights
Bay Windows
Glass Doors
Double-Hung
Window Replacement/Installation
Power Home Remodeling
Melville, NYPrice Transparency
Timely Service
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTEducational Website
Free assessment
Price Transparency
Services Offered
Double-Hung
Bay Windows
Glass Doors
Custom Window Designs
Window Replacement/Installation
Energy-Efficient Options
Flawless Glass & Mirror LLC
Holbrook, NYFree assessment
Owner-operated small business
Free in-home consultation
Educational Website
Price Transparency
Customized glass options
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Showers
Mirrors
United Home Experts
Norwalk, CTPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Fiberglass Frames
Doors & Windows
Albertson, NYEducational Website
Price Transparency
Free in-home or virtual consultation
Good Customer Service
Online product shopping
Free assessment
Sunday availability
Services Offered
Bay Windows
Window Replacement/Installation
Wood Frames
Double-Hung
Vinyl Frames
Window Depot USA of Southern CT
Trumbull, CTFree assessment
Timely Service
Price Transparency
Educational Website
Good Customer Service
Services Offered
Double-Hung
Triple Pane Glass
Window Replacement/Installation
Glass Doors
Bay Windows
Energy-Efficient Options
Vinyl Frames
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Greenwich Windows Replacement
Greenwich, CTPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Free assessment
Labor warranties available
Free same-day estimates
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYPrice Transparency
Timely Service
Educational Website
Over 50,000 installations completed
No-construction services available
Free assessment
Good Customer Service
Trademark soundproof Citiwindows
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Custom Window Designs
Aspen Home Remodeling, LLC.
Oradell, NJGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
United Windows And Glass Repair LLC
Brooklyn, NYPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Double-Hung
Energy-Efficient Options
Window Repair
Bay Windows
Glass Repair
Tempered Glass
Window Replacement/Installation
Ben Window & Glass
Brooklyn, NYFoggy window repair
Wide selection
Weekend availability
Price Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Window Repair
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJ24-hour emergency service
Saturday and Sunday availability
Free in-home consultation
Educational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
F5 Remodeling
Rutherford, NJPrice Transparency
Educational Website
Free assessment
Full-service installation
Family-owned and operated
Minority-owned and operated
Good Customer Service
Services Offered
Window Replacement/Installation
Smithtown Window Replacement and Doors
Smithtown, NYEducational Website
Price Transparency
Weekend availability
Energy-efficient windows and doors
Good Customer Service
Free assessment
Family-owned and operated
Services Offered
Wood Frames
Tempered Glass
Fiberglass Frames
Glass Doors
Metal Frames
Triple Pane Glass
Bay Windows
Window Repair
Glass Showers
Window Replacement/Installation
Storm/Impact Windows
Double-Hung
Vinyl Frames
Energy-Efficient Options
Custom Window Designs
Mr. Handyman of Huntington and Smithtown
East Northport, NYFree assessment
Good Customer Service
Timely Service
Price Transparency
Educational Website
Services Offered
Window Repair
Bay Windows
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Lake Ronkonkoma, NY using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in 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.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- 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.