20 Best Window Companies in Lewisboro, NY (2025 Reviews)
When it’s time to upgrade your windows, our list of the best window installation companies can help you find the provider for you.
We analyzed all the top-rated window companies in Lewisboro 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 updating for style or have damaged windows, windows play an important role in conserving your home's energy. Poor windows can make your AC or heater work extra hard in the summer or winter.
That’s also bad news for the environment because the extra energy required by outdated windows increases your carbon footprint.
We’ve made a guide on the best installation companies to help you in your search, so you can not only take advantage of brand-new windows, but also save money on your electric bills.
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 Lewisboro
The EcoWatch team evaluated dozens of companies that serve the Lewisboro area to find the best window installation companies that fit our standards. The installers in this article scored the best in our review categories, such as energy-efficient offerings, availability, price, local expertise, customer service and more.

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 been in the window business for around 27 years. Its reputation is backed by a considerable amount of positive 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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Lewisboro?Prices aren’t displayed on Window World’s website, but it's known for offering some of the most affordable window installations around. Requesting a free quote on its website is the best way to get more accurate information.

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 been in the window business for around 27 years. Its reputation is backed by a considerable amount of positive 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 is an Energy Star partner offering a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Lewisboro?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 get more accurate information.
We aim to be unbiased and transparent by describing pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Lewisboro
Renewal by Andersen of Long Island
Farmingdale, NYPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Double-Hung
Window Replacement/Installation
Skylights
Bay Windows
Glass Doors
Power Home Remodeling
Trumbull, CTGood Customer Service
Timely Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
United Home Experts
Norwalk, CTGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Fiberglass Frames
Greenwich Windows Replacement
Greenwich, CTFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Window Depot USA of Southern CT
Trumbull, CTGood Customer Service
Free assessment
Timely Service
Price Transparency
Educational Website
Services Offered
Triple Pane Glass
Energy-Efficient Options
Double-Hung
Glass Doors
Bay Windows
Window Replacement/Installation
Vinyl Frames
Putnam Windows Inc.
Cold Spring, NYGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Vinyl Frames
Wood Frames
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
M & R Windows
Bronx, NYPrice Transparency
Timely Service
Services Offered
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Skylights
Doors & Windows
Albertson, NYFree assessment
Online product shopping
Free in-home or virtual consultation
Price Transparency
Sunday availability
Educational Website
Good Customer Service
Services Offered
Double-Hung
Wood Frames
Window Replacement/Installation
Vinyl Frames
Bay Windows
Frank Conforti Contracting
North Haledon, NJPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Skylights
Energy-Efficient Options
Window Repair
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJ24-hour emergency service
Price Transparency
Good Customer Service
Educational Website
Free in-home consultation
Free assessment
Saturday and Sunday availability
Services Offered
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFree assessment
Price Transparency
Good Customer Service
Free same-day estimates
Family-owned and operated
Labor warranties available
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYFree assessment
Timely Service
Over 50,000 installations completed
Trademark soundproof Citiwindows
Educational Website
No-construction services available
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Custom Window Designs
F5 Remodeling
Rutherford, NJFamily-owned and operated
Good Customer Service
Full-service installation
Minority-owned and operated
Educational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Northern Windows Siding, Roofing and Insulation
Goshen, NYEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Flawless Glass & Mirror LLC
Holbrook, NYPrice Transparency
Educational Website
Free in-home consultation
Customized glass options
Good Customer Service
Owner-operated small business
Free assessment
Services Offered
Glass Showers
Mirrors
Window Replacement/Installation
Bloomfield Window and Door Company
Bloomfield, NJFree assessment
Services Offered
Window Replacement/Installation
Screen Repair
Westchester Window
Thornwood, NYGood Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Wood Frames
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Lewisboro, 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 Lewisboro Saves You Money
By upgrading to energy-efficient windows, you can take advantage of several benefits, including:
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Save on electricity bills: Since energy-efficient windows lower the amount of energy needed to heat or cool your home, the switch can help you save about $331 annually on your energy bills in Lewisboro.
- Decrease your carbon footprint: Reducing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 65 pounds per year on average.
- Protect your investment: If you have an older home, your windows are most likely in need of replacement. Upgrading your windows can improve the insulation in your home and also help raise the value of your property if you decide to sell.
Estimated Cost of Window Replacement in Lewisboro
Let’s take a look at the cost of window replacement and the types of services you may need for your home.
How Much Do New Windows Cost?
The average cost to replace one window is about $600 but can range from $200 to $1,200. These estimates vary based on specific characteristics of your installation, like type, number of windows, size, material, the location of your home and more.
With windows, efficiency is the most important factor for many homeowners. Efficient windows may cost more upfront, but by increasing the efficiency of your home — particularly during the summer and winter — they can give you many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Lewisboro homeowners $331+ a year after replacing single-pane windows.
Another factor that influences the overall cost is the material of the frame you pick. Aluminum frames are typically the least expensive and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first question to ask yourself when planning to replace your windows is: Do you want a full-frame installation or a pocket installation?
Full-frame installations involve replacing the full window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has a great amount of damage. Full-frame installations require more time and labor and will increase overall costs. A pocket installation entails replacing a window without replacing the frame. So, instead of taking out the whole unit and rebuilding it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company will be able to recommend the best type for your project. In Lewisboro, the choice will mostly depend on how much damage there is currently and how old your existing frames are.
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 Lewisboro
In our search to make your home improvements easier and more eco-friendly in Lewisboro, the EcoWatch Reviews team chose the above companies as the best window installation companies in the city. Along with energy efficiency, we evaluated each installer and ranked them based on the following methodology:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve the Lewisboro area so you can find a quality window installation company near you.
Work Quality
When installing new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the brand you get. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If most customers don’t have nice feedback about their service from a certain installer, it won’t be 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 providers’ prices, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed previously, windows are a significant investment, so you’ll want to be certain that investment is protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of Lewisboro’s climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Lewisboro window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Lewisboro, NY Window Replacement FAQs
What is the typical cost to install windows in a home?
The average cost of replacing a window ranges from $450 to $650. There are many factors that influence the cost, including the number of windows, your property’s location, how energy-efficient the windows are, local labor costs, the materials used in designing the windows and styles and sizes of windows.
What kind of window is the best for energy efficiency?
A window’s energy efficiency depends on a variety of factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
Can you replace your own windows?
While you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Hiring a professional can help ensure that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.
What time of year should I replace my windows?
While you can install windows any time of year, warmer weather is generally better for replacing windows. Additionally, it shouldn’t be raining, because rain can make the installation harder.