20 Best Window Companies in Dover, NJ (2023 Reviews)
When the time comes to upgrade your windows, our guide to the best window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in Dover and selected the best 20 based on:
-
Customer reviews
-
Window installation expertise
-
Popularity with home-owners like you
Please enter a valid 5-digit zip code!

Updated September 15, 2023
Why you can trust EcoWatch
Although eco-friendly energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's efficiency can also have a large impact on home energy conservation. Drafty windows could lead to having higher energy bills during the winter or summer months.
That's bad for your wallet and the environment, but one of the top window installation companies can help you with that.
We've made this list of 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
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Dover
The EcoWatch team researched many window installation companies across Dover to narrow our list down to the top ones. We assessed the companies based on their energy-efficient offerings, coverage area, price, customer service, local experience 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 has windows expertise in Dover. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement business. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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 WindowsWindow World caters to eco-conscious consumers by providing energy-efficient window offerings. 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 Dover?Window World doesn’t have any cost information available on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

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 Dover. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been operating since 1995 and currently services nearly every state except Mississippi and West Virginia.
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 WindowsThere are a wide variety of window types available from Renewal by Andersen, some of which are Energy Star products. 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 Dover?Prices aren’t available 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. Receiving a free quote on its website is the best way to get more accurate information.

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 offers the best window installation for businesses in Dover. This window installation company has been operating since 1999 and currently services 13 states and Washington D.C. The provider has plenty of positive reviews from customers online.
You may want to consider picking Aeroseal if you're looking for a installer that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide variety of window types that Aeroseal Windows offers, some of which are Energy Star products. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.
How much does Aeroseal Windows cost in Dover?Pricing information is not available on Aeroseal’s website because the cost of window installment depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. The best way to get more accurate information is to receive a free quote from the company.

Universal Windows Direct
-
Makes charitable contributions
-
Manufactures products in-house
-
Wide variety of products and services
-
Lifetime warranty
-
Limited service area
-
Some installations carried out by third-party contractors
-
Quality of service will depend on your area
Universal Windows Direct has the best warranty in Dover. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the window replacement business. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct caters to eco-conscious consumers by providing energy-efficient window offerings. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Dover?Universal doesn’t have any cost information available on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. You can request a free quote on its website for more information about pricing.
One thing to note is that the following companies are national, meaning the quality of the service may vary depending on your local team. We have tried to remain unbiased and transparent by listing both pros and cons for every provider.
More Window Companies in Dover
Renewal by Andersen of NJ/NY Metro
Cranford, NJ-
Good Customer Service
-
Free assessment
-
Price Transparency
-
Educational Website
Services Offered
-
Custom Window Designs
-
Stained Glass
-
Window Replacement
-
Commercial Windows
-
Sliding Glass
-
Glass Showers
-
Double-Hung
-
Residential Windows
Window World of North Jersey
Fairfield, NJ-
Good Customer Service
-
Price Transparency
-
Free assessment
-
Educational Website
-
Timely Service
Services Offered
-
Custom Window Designs
-
Fast Delivery
-
Bay Windows
-
Sliding Glass
-
Double-Hung
-
Window Replacement
-
Residential Windows
New Jersey Siding & Windows, Inc.
Randolph, NJ-
Good Customer Service
-
Timely Service
-
Free assessment
-
Educational Website
-
Price Transparency
Services Offered
-
Double-Hung
-
Window Replacement
-
Bay Windows
-
Sliding Glass
-
Commercial Windows
-
Residential Windows
-
Custom Window Designs
New View Windows and Doors
East Hanover, NJ-
Good Customer Service
-
Educational Website
-
Free assessment
-
Price Transparency
Services Offered
-
Stained Glass
-
Double-Hung
-
Fast Delivery
-
Custom Window Designs
-
Sliding Glass
-
Aluminum Window Frames
-
Residential Windows
-
Window Replacement
CKG Contractors Inc. Roofing-Siding-Window Experts.
Parsippany-Troy Hills, NJ-
Good Customer Service
-
Free assessment
-
Timely Service
-
Educational Website
-
Price Transparency
Services Offered
-
Residential Windows
-
Custom Window Designs
-
Commercial Windows
-
Window Replacement
Roman Stolyarchuk/ Home Improvement Contractor
Morristown, NJ-
Free assessment
-
Price Transparency
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Glass Showers
-
Residential Windows
-
Window Replacement
-
Fast Delivery
RJW Exteriors
Lake Hopatcong, NJ-
Price Transparency
-
Educational Website
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Window Replacement
-
Double-Hung
Mighty Dog Roofing
Whippany, NJ-
Good Customer Service
-
Free assessment
-
Timely Service
-
Price Transparency
Services Offered
-
Custom Window Designs
-
Aluminum Window Frames
-
Residential Windows
-
Commercial Windows
-
Window Replacement
-
Fast Delivery
Blue Nail Exteriors
Montville, NJ-
Good Customer Service
-
Educational Website
-
Free assessment
Services Offered
-
Window Replacement
-
Residential Windows
-
Fast Delivery
-
Custom Window Designs
Cunningham Siding & Replacement
NJ 07836, NJ-
Free assessment
-
Good Customer Service
Services Offered
-
Residential Windows
-
Glass Showers
-
Custom Window Designs
-
Fast Delivery
-
Commercial Windows
-
Window Replacement
Lifetime Aluminum
East Hanover, NJ-
Price Transparency
-
Educational Website
-
Free assessment
-
Good Customer Service
-
Timely Service
Services Offered
-
Bay Windows
-
Double-Hung
-
Window Replacement
-
Sliding Glass
-
Glass Showers
-
Fast Delivery
-
Residential Windows
-
Commercial Windows
-
Aluminum Window Frames
-
Custom Window Designs
Basking Ridge Glass and Mirror
Basking Ridge, NJ-
Educational Website
-
Price Transparency
-
Good Customer Service
-
Free assessment
Services Offered
-
Glass Showers
-
Residential Windows
-
Window Replacement
-
Custom Window Designs
-
Commercial Windows
-
Sliding Glass
-
Window Repair
Madison Door
Madison, NJ-
Price Transparency
-
Educational Website
-
Good Customer Service
-
Free assessment
Services Offered
-
Fast Delivery
-
Custom Window Designs
-
Residential Windows
-
Bay Windows
-
Window Replacement
-
Sliding Glass
RWC Windows, Doors, Kitchens, & Baths
West Caldwell, NJ-
Educational Website
-
Timely Service
-
Free assessment
-
Price Transparency
-
Good Customer Service
Services Offered
-
Fast Delivery
-
Window Replacement
-
Glass Showers
-
Commercial Windows
-
Residential Windows
-
Custom Window Designs
PJ Fitzpatrick
Fairfield, NJ-
Good Customer Service
-
Educational Website
-
Free assessment
-
Timely Service
-
Price Transparency
Services Offered
-
Glass Showers
-
Custom Window Designs
-
Window Replacement
-
Commercial Windows
-
Sliding Glass
-
Double-Hung
-
Residential Windows
-
Window Repair
Windows & Doors By The Men With Tools
Summit, NJ-
Free assessment
-
Timely Service
-
Good Customer Service
-
Price Transparency
-
Educational Website
Services Offered
-
Residential Windows
-
Custom Window Designs
-
Double-Hung
-
Fast Delivery
-
Energy-Efficient Options
-
Glass Showers
-
Commercial Windows
-
Bay Windows
-
Window Replacement
Winstar Windows
Essex Fells, NJ-
Price Transparency
-
Good Customer Service
-
Educational Website
-
Free assessment
Services Offered
-
Window Replacement
-
Sliding Glass
-
Residential Windows
-
Custom Window Designs
Six Brothers Contractors LLC
Lincoln Park, NJ-
Good Customer Service
-
Educational Website
-
Free assessment
-
Price Transparency
Services Offered
-
Window Replacement
-
Commercial Windows
-
Residential Windows
-
Glass Showers
-
Custom Window Designs
CKG Contractors Inc Roofing-Siding-Windows Andersen Certified, GAF Authorized.
Summit, NJ-
Educational Website
-
Free assessment
-
Good Customer Service
-
Price Transparency
-
Timely Service
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
-
Window Replacement
Carolan Contractors
Verona, NJ-
Educational Website
-
Timely Service
-
Free assessment
-
Price Transparency
-
Good Customer Service
Services Offered
-
Window Replacement
-
Custom Window Designs
-
Commercial Windows
-
Double-Hung
-
Residential Windows
Calculate how much you can expect to pay for window installation and replacement in Dover, 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 Dover Saves You Money
There are several perks of switching to energy-efficient windows. Some reasons you may want to consider making the change are the following:
- Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its value.
- Save on electricity bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of residential energy use. Upgrading to energy-efficient models can help lower how much you have to pay, therefore saving you about 12% more on your bills.
- More efficient energy use in your household: Because the summers can get quite hot in Dover, homeowners often rely on their air conditioner a lot. Energy-efficient windows lower the amount of cool air that is lost through your windows, making it easier to keep your home cool.
- 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.
Estimated Cost of Window Replacement in Dover
Windows come in various shapes and sizes, so costs and services will vary greatly. Here are the typical costs and the primary services that you can find from window installation companies.
How Much Do New Windows Cost?
Typically, homeowners in Dover can expect that most window installations will cost between $250 and $1,200, with the average cost at around $600. How much it will cost depends on several factors, such as the location of your home, material, type, number of windows, size and more.
Bear in mind that energy-efficient windows may come at a higher price tag, but Energy Star predicts the upgrade will save you between $101 and $583 a year when installing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. Your exact savings will vary depending on your local climate, energy rates and individual home characteristics.
Costs will also vary based on the material you choose for your window frames. Aluminum frames have the lowest price. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are a bit more expensive and offer good insulation. Composite frames made from wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are typically two kinds of window installation services: full-frame and pocket installations.
A full-frame installation is a replacement of the total window. It involves removing the old window, the sill, and the exterior and interior trim. It can also involve additional materials, like insulation and drip edges, which raise the overall cost of the project. It's also worth noting that you may have to touch up the paint around the window after a full-frame installation. A pocket installation involves replacing a window within the frame that's already there. So, instead of taking out the whole window and reinstalling it, the window installer will just slide the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company can advise you on the best type for your project. In Dover, the decision will mostly depend on the efficiency of your home and the age and condition of your existing frames.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Dover
In our hunt to find the most reliable, eco-friendly window installers in Dover, the EcoWatch Reviews team examined dozens of companies before deciding on these. Along with energy efficiency, we analyzed window companies all across the state and ranked them based on the following methodology:
Service Area
Since this is a guide for Dover, we paid more attention to companies that provide services to the city. There are certainly reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Dover.
Work Quality
When it comes to new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the brand of window you choose. 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
We analyzed patterns in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including cost, quality of installation, quality of parts, professionalism, warranty and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that offer lengthy warranties for products, parts and labor 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 earn higher rankings by our standards. We like to see at least ten years of experience.
Dover, NJ Window Replacement FAQs
What is the average cost to install windows?
The national average cost of installing a window is around $600 but can range between $200 and $1,200, depending on several factors. The price is typically dependent on 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 initially but can save you a decent amount of money a year in energy bills.
What are the kinds of windows?
The most common types of windows for homes are transom windows, casement windows, picture windows, slider windows, bay windows, double-hung and single-hung windows and awning windows.
What services do window installation companies provide?
Window installers go to your property to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation is done.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on your energy bills, replacing all your windows together is the only way to gain that benefit. However, if you have just one or two windows that are damaged or drafty, you can replace just those.