20 Best Window Companies in Dover, NJ (2025 Reviews)
Looking to replace your windows? We’ve got all the information you need in this list of the best window installation companies.
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!
Why you can trust EcoWatch
A review of the top window replacement companies in Dover may not seem like the most captivating article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. During the winter months, the last thing you want is your heat to leak out of your outdated, drafty windows.
Installing upgraded, efficient windows on your property can help you save money each month on your electricity bills — and you can help the environment as well.
We’ve made a guide on the best installation companies to help you in your search, so you can not only benefit from brand-new windows, but also save money on your power 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 Dover
The EcoWatch team researched dozens of installers that serve the Dover area to find the best window installation companies by our standards. The companies in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise 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 around 27 years of industry experience, and it currently serves 200 locations nationwide. The company has a lot of positive reviews from customers online.
Window World may be the company for you if you want one 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 has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Dover?Prices are not available on Window World’s website because the cost of window installment varies greatly depending 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. You can request a free quote on its website for more information about the cost.

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 around 27 years of industry experience, and it currently serves nearly every state except Mississippi and West Virginia. The company has a lot of positive reviews from customers online.
Andersen may be the company for you if you want one 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 has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want 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 Dover?Prices are not available on Andersen’s website because the cost of window installment varies greatly depending 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. You can request a free quote on its website for more information about the cost.

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 is an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has around 23 years of industry experience, and it currently serves 13 states and Washington D.C. The company has a lot of positive reviews from customers online.
Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. 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?Prices are not available on Aeroseal’s website because the cost of window installment varies greatly depending on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. You can request a free quote on its website for more information about the cost.
We’ve recommended providers with good reputations, but bear in mind that these are national companies, so the quality of service may differ depending on your local crew. We have tried to be unbiased and transparent by listing pros and cons for every company we reviewed.
More Window Companies in Dover
Renewal by Andersen of NJ/NY Metro
Cranford, NJEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Bay Windows
Double-Hung
Skylights
Glass Doors
Window Replacement/Installation
Winstar Windows
Essex Fells, NJSecond-generation-family-owned and operated
Wide variety of windows
Good Customer Service
One-day window installation
Second-generation family-owned and -operated
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Glass Doors
Bloomfield Window and Door Company
Bloomfield, NJFree assessment
Services Offered
Screen Repair
Window Replacement/Installation
Zeus Siding & Windows LLC
Irvington, NJFree assessment
Weekend availability
Price Transparency
Good Customer Service
Educational Website
Satisfaction-guaranteed warranties
Siding, roofing, and windows
Services Offered
Window Replacement/Installation
Frank Conforti Contracting
North Haledon, NJGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Skylights
Energy-Efficient Options
Window Replacement/Installation
Window Repair
F5 Remodeling
Rutherford, NJMinority-owned and operated
Free assessment
Family-owned and operated
Price Transparency
Full-service installation
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJEducational Website
Good Customer Service
Free in-home consultation
Free assessment
Saturday and Sunday availability
Price Transparency
24-hour emergency service
Services Offered
Window Replacement/Installation
Kepo Siding & Windows
Hillsborough Township, NJTimely Service
Free assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Aspen Home Remodeling, LLC.
Oradell, NJFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Energy-Efficient Options
Ben Window & Glass
Brooklyn, NYEducational Website
Weekend availability
Wide selection
Price Transparency
Free assessment
Foggy window repair
Services Offered
Window Repair
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYTimely Service
Over 50,000 installations completed
No-construction services available
Educational Website
Trademark soundproof Citiwindows
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Custom Window Designs
Energy-Efficient Options
United Windows And Glass Repair LLC
Brooklyn, NYEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Repair
Glass Repair
Bay Windows
Tempered Glass
Double-Hung
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Northern Windows Siding, Roofing and Insulation
Goshen, NYPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Prown's Windows & Doors
Middletown Township, NJFree assessment
Services Offered
Double-Hung
Glass Doors
Glass Showers
Window Replacement/Installation
CKG Contractors Inc. Roofing-Siding-Window Experts.
Parsippany-Troy Hills, NJTimely Service
Educational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Skylights
One Call Construction
Fairfield, NJEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
RWC Windows, Doors, Kitchens, & Baths
West Caldwell, NJFree assessment
Good Customer Service
Timely Service
Educational Website
Services Offered
Glass Doors
Glass Showers
Window Replacement/Installation
PJ Fitzpatrick
Fairfield, NJFree assessment
Educational Website
Price Transparency
Good Customer Service
Timely Service
Services Offered
Vinyl Frames
Glass Showers
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Window Repair
Double-Hung
Skylights
Glass Doors
Window25
Kenilworth, NJPrice Transparency
Timely Service
Good Customer Service
Services Offered
Custom Window Designs
Window Replacement/Installation
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 quite a few benefits of upgrading to energy-efficient windows. Some reasons you may want to consider making the switch include the following:
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, especially if your home is on the older side.
- Reduce your carbon footprint: In Dover, you can cut your indirect greenhouse gas emissions by about 206 pounds per year when you upgrade to energy-efficient windows.
- Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out harmful UV rays.
- Save on electricity bills: Because energy-efficient windows reduce how much energy you need to heat or cool your home, the switch can help you save about $287 annually on your energy bills in Dover.
Estimated Cost of Window Replacement in Dover
Windows come in different purposes, styles and shapes, so costs and services will differ greatly based on your project. Below, we detail the average cost and services that you’ll find from window installation companies.
How Much Do New Windows Cost?
Though the national average cost of installing one window is around $600, it can range anywhere from $200 to $1,200. This is because window installations depend on several factors specific to your home, such as the size, material and number of windows you need to install, as well as the location of your property.
Bear in mind that energy-efficient windows may cost more upfront, 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 you install double-pane, clear glass windows. Your exact savings will vary based on your local climate, energy rates and individual home characteristics.
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 provide good insulation. Composite frames made from 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 provide decent insulation for your home.
What Services do Window Installers Offer?
When it comes to window installations, there are generally two kinds that your installer will have: full-frame and pocket installations.
A full-frame installation is a total window replacement. This service involves taking out the old window, the sill, and the exterior and interior trim. It can also involve extra materials, including insulation and drip edges, which raise the total cost of the project. It’s also worth noting that you may have to touch up the paint surrounding the window after a full-frame installation. A pocket installation involves installing a new window without replacing the frame. This means instead of taking out the whole window and reinstalling it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window replacement company should be able to help you understand what’s best for your needs. In Dover, the decision will mostly depend on how old your home is and if there’s any damage. Wood can decay if it’s not maintained properly over the years, so it’s good 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 Dover
EcoWatch reviews are different from other reviews since we examine these companies through a sustainability lens. Along with energy efficiency, we assessed window companies all across the state and assigned rankings using the following methodology:
Service Area
This one is pretty 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 installing new windows, the quality and variety of services can often play just as important of a role in insulation 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 trends in recent customer feedback to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including quality of installation, cost, professionalism, warranty, quality of parts and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing providers’ prices, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed, windows are a considerable investment, so you’ll want to make sure that investment is well protected. Window installation companies that give you 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 installation companies that have more 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 typical cost to install new windows in a home?
The national average cost of installing one window is about $600 but can range between $200 and $1,200, depending on several factors. The price is typically dependent on the size of the window, the type and material of the window and the location of your property. 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 types of windows?
There are several different kinds of windows you can get for your house, including transom windows, slider windows, picture windows, bay windows, awning windows, casement windows and double-hung and single-hung windows.
Do I really need to use a window installation company?
Unless you have experience with home improvement projects and have the time to replace your own windows, we recommend hiring a professional. The window installation process is complex and can take anywhere from four to six hours for one window. Although it’s tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and much safer option.
Should I replace my windows all at the same time?
If you’re upgrading your windows because of energy-efficiency, replacing all of the windows at the same time is the only way to see a noticeable difference. However, if you have only a few windows that are damaged or leaky, you can replace just those.