20 Best Window Companies in Holtsville, NY (2025 Reviews)
Looking to upgrade your home's windows? We’ve got you covered in this guide to the top window installation companies.
We analyzed all the top-rated window companies in Holtsville 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
The EcoWatch team is all about helping Holtsville homeowners find eco-conscious solutions for their homes. If you have traditional, outdated windows, your AC or heater could be working extra hard to heat or cool your home. This means higher power bills.
That’s also bad news for the environment because the extra energy used by damaged windows increases your carbon footprint.
We’ve put together a list of the best installation companies to help you in your research, so you can not only take advantage of brand-new windows, but also save money on your energy 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 Holtsville
The EcoWatch team assessed dozens of installers across the country to find the best window installation companies for our readers. We assessed the installers on their energy-efficient offerings, customer service, coverage area, local experience, price 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.
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 WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window World cost in Holtsville?Prices are not available on Window World’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. The best way to know for sure is to get a free quote from the company.

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.
It has established itself as a company that 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 WindowsA 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 want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Holtsville?Prices are not available on Andersen’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to get a free quote from the company.
We have tried to stay unbiased and transparent by describing pros and cons for each company. Additionally, any partnerships do not influence our reviews.
More Window Companies in Holtsville
Renewal by Andersen of Long Island
Farmingdale, NYGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Skylights
Power Home Remodeling
Melville, NYTimely Service
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTPrice Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Bay Windows
Double-Hung
Custom Window Designs
Window Replacement/Installation
Glass Doors
Flawless Glass & Mirror LLC
Holbrook, NYGood Customer Service
Owner-operated small business
Free assessment
Free in-home consultation
Customized glass options
Educational Website
Price Transparency
Services Offered
Glass Showers
Window Replacement/Installation
Mirrors
United Home Experts
Norwalk, CTGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Fiberglass Frames
Window Depot USA of Southern CT
Trumbull, CTFree assessment
Good Customer Service
Price Transparency
Timely Service
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
Bay Windows
Triple Pane Glass
Vinyl Frames
Doors & Windows
Albertson, NYFree in-home or virtual consultation
Free assessment
Price Transparency
Educational Website
Sunday availability
Online product shopping
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Vinyl Frames
Wood Frames
Bay Windows
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Free same-day estimates
Free assessment
Labor warranties available
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Greenwich Windows Replacement
Greenwich, CTGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Energy-Efficient Options
Double-Hung
Vinyl Frames
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYGood Customer Service
Over 50,000 installations completed
No-construction services available
Price Transparency
Trademark soundproof Citiwindows
Free assessment
Timely Service
Educational Website
Services Offered
Energy-Efficient Options
Custom Window Designs
Window Replacement/Installation
United Windows And Glass Repair LLC
Brooklyn, NYEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Double-Hung
Window Repair
Bay Windows
Glass Repair
Tempered Glass
Energy-Efficient Options
Aspen Home Remodeling, LLC.
Oradell, NJFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
Ben Window & Glass
Brooklyn, NYWeekend availability
Free assessment
Price Transparency
Foggy window repair
Educational Website
Wide selection
Services Offered
Window Repair
Window Replacement/Installation
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJ24-hour emergency service
Educational Website
Free in-home consultation
Saturday and Sunday availability
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
F5 Remodeling
Rutherford, NJFamily-owned and operated
Good Customer Service
Educational Website
Full-service installation
Minority-owned and operated
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Smithtown Window Replacement and Doors
Smithtown, NYPrice Transparency
Educational Website
Good Customer Service
Free assessment
Weekend availability
Energy-efficient windows and doors
Family-owned and operated
Services Offered
Tempered Glass
Storm/Impact Windows
Glass Doors
Custom Window Designs
Triple Pane Glass
Bay Windows
Window Repair
Fiberglass Frames
Metal Frames
Wood Frames
Glass Showers
Vinyl Frames
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
Mr. Handyman of Huntington and Smithtown
East Northport, NYEducational Website
Free assessment
Price Transparency
Good Customer Service
Timely Service
Services Offered
Window Repair
Window Replacement/Installation
Bay Windows
Calculate how much you can expect to pay for window installation and replacement in Holtsville, 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 Holtsville Saves You Money
There are several perks of upgrading to energy-efficient windows. A few reasons you may want to consider making the change are the following:
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can lower your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Save on power bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of household energy use. Replacing your windows with energy-efficient models can help reduce that number, therefore saving you about 12% more on your bills.
- Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, drafty or maybe even damaged in some way. Updating your windows could help increase the value of your property if you decide to sell.
Estimated Cost of Window Replacement in Holtsville
Each window replacement company offers various services and has different price points depending on a few factors.
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 for each window. How much it will cost is based on several factors, like material, size, type, number of windows, the location of your home and more.
Whether or not you pick energy-efficient windows is another factor that will affect the cost. These will almost always cost more than other windows, but on the other hand, you can save about $215 a year on your energy bills in Holtsville.
Costs will also vary depending 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 somewhat expensive and offer good insulation. Composite frames made with wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
The first step when considering a replacement is to figure out whether you should get a full-frame or pocket installation.
Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations involve more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the old frame. Pocket installations are simpler and won’t cost as much, but you can’t do this kind of installment if you have any pre-existing rot or water damage.
Your window installation company will be able to help you understand what’s best for your needs. In Holtsville, the decision will mostly depend on how old your home is and if there’s any moisture damage. Wood can decay if not properly maintained over the years, so it’s a good idea to have a professional check on your frames and window sills.
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 Holtsville
In our hunt to make your home improvements easier and more eco-friendly in Holtsville, the EcoWatch team landed on the above companies as the top window installation companies in the city. We’ve decided to review the top window replacement companies in Holtsville primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows can reduce 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 a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
When picking new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the most customer satisfaction. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including quality of installation, cost, professionalism, quality of parts, warranty and more.
Cost
This one is a give-and-take: as with most services, cheap window installation companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a proven track record in the industry. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Holtsville, NY Window Replacement FAQs
How much should window installation cost?
The national average cost of replacing one window is about $600 but can range from $200 to $1,200, based 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, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
The most common kinds of windows for homes are awning windows, slider windows, picture windows, casement windows, double-hung and single-hung windows, bay windows and transom windows.
What do window installers do?
Window installers cover the entire process — from replacing old windows with brand-new ones to cleaning up after the installation. Additionally, a lot of companies offer window manufacturing, customization and repairs.
When is the best time of year to replace windows?
While you can install windows any time of year, warmer weather is generally better for replacing windows. In addition, it shouldn’t be raining, because rain can make the installation harder.