20 Best Window Companies in Union, NJ (2025 Reviews)
Are you thinking about replacing your windows? Our list of the best window installation companies can help you narrow down which one to pick.
We analyzed all the top-rated window companies in Union 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 windows that need repairs, windows play a crucial role in conserving your home's electricity. Traditional, outdated windows could lead to spending more on power bills during the winter or summer months.
That’s bad news for your bank account and the environment, but one of the top window installation companies can help with that.
Because windows are so important for your home, picking the best company for you is a big decision to make. That’s why the EcoWatch team has put together this list of the best window installation companies, so you can make an informed decision more easily.
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 Union
The EcoWatch Reviews team evaluated dozens of providers that serve the Union area to find the best window installation companies by our standards. The installers mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, customer service, price 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 provides windows expertise in Union. Window World has over 27 years of experience in the industry, and it currently serves 200 locations nationwide.
You may want to consider opting for Window World if you're interested in 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 WindowsWindow World is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. 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 Union?Prices are not available on Window World’s website since the cost of window replacement varies greatly based 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. If you’d like to know for sure, you can request 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 provides the best availability in Union. Andersen has over 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia.
You may want to consider opting for Andersen if you're interested in 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 WindowsRenewal by Andersen is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. 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 Union?Prices are not available on Andersen’s website since the cost of window replacement varies greatly based 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. If you’d like to know for sure, you can request a quote on the company’s website.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows provides the best window installation for businesses in Union. Aeroseal has over 23 years of experience in the industry, and it currently serves 13 states and Washington D.C.
You may want to consider opting for Aeroseal if you're interested in a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner with a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Union?Prices are not available on Aeroseal’s website since the cost of window replacement varies greatly based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. If you’d like to know for sure, you can request a quote on the company’s website.
Please note that the following companies are national, which means the quality of customer service may depend on your local team. We have tried to be unbiased and transparent by describing both pros and cons for each company.
More Window Companies in Union
Renewal by Andersen of NJ/NY Metro
Cranford, NJFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Skylights
Glass Doors
Zeus Siding & Windows LLC
Irvington, NJEducational Website
Good Customer Service
Weekend availability
Siding, roofing, and windows
Free assessment
Satisfaction-guaranteed warranties
Price Transparency
Services Offered
Window Replacement/Installation
Bloomfield Window and Door Company
Bloomfield, NJFree assessment
Services Offered
Screen Repair
Window Replacement/Installation
Winstar Windows
Essex Fells, NJPrice Transparency
Good Customer Service
Educational Website
Second-generation-family-owned and operated
One-day window installation
Wide variety of windows
Second-generation family-owned and -operated
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
F5 Remodeling
Rutherford, NJGood Customer Service
Free assessment
Minority-owned and operated
Family-owned and operated
Full-service installation
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Ben Window & Glass
Brooklyn, NYFoggy window repair
Wide selection
Price Transparency
Free assessment
Weekend availability
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJFree in-home consultation
24-hour emergency service
Free assessment
Good Customer Service
Saturday and Sunday availability
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
United Windows And Glass Repair LLC
Brooklyn, NYFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Window Repair
Glass Repair
Tempered Glass
Energy-Efficient Options
Cityproof Soundproof Windows
Long Island City, NYTimely Service
Free assessment
Price Transparency
Trademark soundproof Citiwindows
Educational Website
Over 50,000 installations completed
No-construction services available
Good Customer Service
Services Offered
Custom Window Designs
Window Replacement/Installation
Energy-Efficient Options
Frank Conforti Contracting
North Haledon, NJFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Skylights
Energy-Efficient Options
Window Repair
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Skylights
Energy-Efficient Options
Prown's Windows & Doors
Middletown Township, NJFree assessment
Services Offered
Window Replacement/Installation
Glass Showers
Double-Hung
Glass Doors
Kepo Siding & Windows
Hillsborough Township, NJGood Customer Service
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
National Home Improvements
Colts Neck, NJTimely Service
Good Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYLabor warranties available
Price Transparency
Family-owned and operated
Free same-day estimates
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Doors & Windows
Albertson, NYPrice Transparency
Free in-home or virtual consultation
Online product shopping
Sunday availability
Educational Website
Good Customer Service
Free assessment
Services Offered
Wood Frames
Vinyl Frames
Window Replacement/Installation
Bay Windows
Double-Hung
Window25
Kenilworth, NJGood Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Custom Window Designs
Nunez Home Improvement, LLC
Elizabeth, NJFree assessment
Good Customer Service
25-year warranty
Financing options available
Educational Website
Satisfaction guarantee
Price Transparency
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Union, NJ 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 Union Saves You Money
There are quite a few benefits of switching to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Protect your investment: If you have a relatively old home, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
- Save on electricity bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% since you need less energy.
- Decrease your carbon footprint: Reducing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 206 pounds per year on average.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
Estimated Cost of Window Replacement in Union
Let’s go over the cost of updating your windows and the kinds of services offered by installers.
How Much Do New Windows Cost?
On average, homeowners in Union can anticipate that most window installations will range from $250 to $1,200, with the average cost at around $600. But prices vary considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door installations and replacements, which carry a higher price tag.
It’s important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Union homeowners $290+ a year when replacing single-pane windows.
The cost of your window installation will also vary depending on the kind of window material you choose for the frames. Wood windows are usually the most expensive, though it depends on whether they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
When considering window installations, in general there are two kinds that your installer will have: full-frame and pocket installations.
A full-frame installation replaces the entire window, including the sill, frame, trim and the window panes. As this type of installation requires more time and labor, it will cost more than a pocket installation. A pocket installation involves installing a new window within the old frame. So, instead of taking out the whole unit and rebuilding it, the window installer will just put the replacement window (also called a retrofit or insert window) into the frame.
If you’re not sure which type of window installation service you need, your installer can help you out. In general, the choice is based on factors such as the age and condition of the home, the type of building material, budget and time restrictions.
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 Union
In our search to find the most reliable, eco-friendly window installers in Union, the EcoWatch Reviews team examined many companies before settling on these. We have reviewed the top window replacement companies in Union mostly based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows can reduce your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Because this is a guide for Union, we only included companies that provide services to the city. There are certainly other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Union.
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 type of window you get. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have nice feedback about their experience with a certain window installation company, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: similar to other services, cheap window installation companies are not going to provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that provide a variety 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 labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Union, NJ Window Replacement FAQs
What is the typical cost to install new windows in a home?
The national average cost of installing a single window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is typically dependent on the type and material of the window, the size of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the different types of windows?
There are several different kinds of windows you can get for your house, including bay windows, awning windows, slider windows, transom windows, picture windows, casement windows and double-hung and single-hung windows.
What do window installation companies do?
Window installers will do the entire process — from replacing your old windows with new ones to cleaning up after the windows have been put in place. In addition, a lot of companies offer window manufacturing, customization and repairs.
Should I replace all my windows at once?
If you’re upgrading your windows because of energy-efficiency, replacing all your windows at once is the only way to gain that benefit. On the other hand, if you have only a few windows that are broken or drafty, you can replace just those.