20 Best Window Companies in Dover, DE (2024 Reviews)

Thinking about upgrading your windows? We’ve got all the information you need in this list of the top 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
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated May 20, 2024

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

The EcoWatch Reviews team is all about helping Dover homeowners make their homes more eco-friendly. During the summer months, the last thing you want is your cool air to leak out of your drafty windows.

Installing efficient windows on your home can help you save money each month on your energy bills — and you can help the environment as well.

So if you’re constructing a new home, renovating or updating your windows in Dover, you’ve found the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Window Veteran

Window World

★★★★★
4.5
  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Dover

The EcoWatch team evaluated dozens of window installation companies in Dover to find the top ones for our readers. The installers mentioned in this article passed our review standards for energy-efficient offerings as well as price, local expertise, customer service and beyond.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon 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 about 27 years of experience in the industry, and it currently serves 200 locations nationwide.

You may want to consider picking 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 Windows

Window 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 does not detail prices on its website, but it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate pricing information.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia.

You may want to consider picking 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 Windows

Renewal by Andersen caters to eco-conscious consumers by providing energy-efficient window offerings. 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?

Andersen does not detail prices on its 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 pricing information.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon 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 about 23 years of experience in the industry, and it currently serves 13 states and Washington D.C.

You may want to consider picking 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 Windows

Aeroseal Windows caters to eco-conscious consumers by providing energy-efficient window offerings. 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?

Aeroseal does not detail prices on its website, but it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate pricing information.

We have tried to remain unbiased and transparent by describing pros and cons for each installer. Additionally, any partnerships do not influence our rankings.

More Window Companies in Dover

Champion Replacement Windows of Baltimore

Rosedale, MD
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: https://www.championwindow.com/Baltimore/
Address: 23 Fontana Ln, Rosedale, MD 21237
Phone: (410) 202-8636

Window World of Harford

Bel Air, MD
4.5
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung

Website: https://www.windowworldmaryland.com/
Address: 425 N Main St, Bel Air, MD 21014
Phone: (410) 417-6889

Window Nation

Glen Burnie, MD
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Triple Pane Glass
  • Service icon Custom Window Designs
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows

Website: https://www.windownation.com/baltimore-showroom/
Address: 871 Cromwell Park Dr, Glen Burnie, MD 21061
Phone: (410) 766-8488

Go Glass Corp

Dover, DE
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Glass Repair
  • Service icon Glass Doors
  • Service icon Mirrors
  • Service icon Window Repair
  • Service icon Window Replacement/Installation

Website: https://www.mrgoglass.com/
Address: 3895 N Dupont Hwy, Dover, DE 19901
Phone: (302) 674-3390

Diamond State Glass

Camden, DE
3.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Repair
  • Service icon Skylights
  • Service icon Custom Glass
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Mirrors
  • Service icon Tempered Glass
  • Service icon Glass Repair
  • Service icon Glass Showers

Website: http://www.diamondstateglass.com/
Address: 23 COCHRAN ROAD BLD 4 UNIT 5\u00266, Camden, DE 19934
Phone: (302) 697-6500

Sundance Kitchen, Baths & Exteriors

Middletown, DE
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: http://sundancekbe.com/
Address: 816 Kohl Ave, Middletown, DE 19709
Phone: (302) 261-3447

Plowman's Windows & Doors Inc.

Millville, NJ
4.7
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.plowmanswindows.com/
Address: 118 E Vine St, Millville, NJ 08332
Phone: (856) 327-2841

Advance Inc - Roofing Windows Siding Doors & Decks

Newark, DE
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung

Website: http://www.advancemyhome.com/
Address: 645 Dawson Dr, Newark, DE 19713
Phone: (800) 367-5151

Bay Area Exteriors

Easton, MD
5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation

Website: https://www.bayareaexteriorsmd.com/
Address: 29000 Information Ln #405, Easton, MD 21601
Phone: (410) 200-3147

WillPower Windows & Doors LLC.

Franklinville, NJ
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Glass Doors
  • Service icon Double-Hung

Website: http://willpowerwindow.com/
Address: 810 Delsea Dr, Franklinville, NJ 08322
Phone: (609) 200-0023

Pella Windows & Doors of Rehoboth Beach

Rehoboth Beach, DE
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: https://www.pellabranch.com/eastern-shore/showrooms/rehoboth-beach/
Address: 37395 Oyster House Rd, Rehoboth Beach, DE 19971
Phone: (302) 257-5544

Ferris Home Improvements

Rehoboth Beach, DE
4.7
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation

Website: https://www.ferrishomeimprovements.com/
Address: 19269 Coastal Hwy, Rehoboth Beach, DE 19971
Phone: (302) 260-5200

Newport Builders Windowland

Newport, DE
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Screen Repair
  • Service icon Storm/Impact Windows

Website: http://www.newportbuildersde.com/
Address: 2 E Ayre St, Newport, DE 19804
Phone: (302) 994-3537

Glass Doctor of Delaware

New Castle, DE
4.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Showers
  • Service icon Custom Glass
  • Service icon Energy-Efficient Options
  • Service icon Window Repair
  • Service icon Mirrors
  • Service icon Glass Repair
  • Service icon Window Replacement/Installation

Website: https://glassdoctor.com/newark-de
Address: 13 King Ct # 1, New Castle, DE 19720
Phone: (302) 737-9900

GT General Contracting

Newfield, NJ
5
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: https://gtgeneralcontracting.com/
Address: 2564 Victoria Ave, Newfield, NJ 08344
Phone: (609) 354-7501

C.M.D. Home Renewal

Bridgeton, NJ
3.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.cmdhomerenewal.com/
Address: 6 Seville Dr, Bridgeton, NJ 08302
Phone: (877) 707-3639

South Jersey Glass & Door

Wildwood, NJ
4.4
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Mirrors
  • Service icon Window Replacement/Installation
  • Service icon Glass Showers
  • Service icon Screen Repair

Website: https://www.sjglassanddoor.com/
Address: 141 W Burk Ave, Wildwood, NJ 08260
Phone: (609) 522-2151

Pella Windows & Doors of Wilmington

Wilmington, DE
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Bay Windows

Website: https://www.pellabranch.com/philadelphia/showrooms/wilmington/
Address: 3622 Concord Pike, Wilmington, DE 19803
Phone: (302) 999-0535

J.W. Tull Roofing Contractor

Wilmington, DE
4.7
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows

Website: https://jwtull.com/about-us/locations-we-serve/wilmington-de-roofing-contracting-services/
Address: 1203 Philadelphia Pike, Wilmington, DE 19809
Phone: (302) 510-1963

Glass Doctor Home + Business of Mullica Hill

Mantua Township, NJ
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Custom Glass
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Glass Repair

Website: https://glassdoctor.com/mullica-hill-home-business
Address: 675 Bridgeton Pike Ste A, Mantua Township, NJ 08051
Phone: (856) 417-0099
Dover Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Dover, DE using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

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

Energy-efficient windows can provide benefits in several ways. Here are a few reasons you may want to consider making the switch:

  • Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your carbon emissions. You could reduce it by 299 pounds per year on average.
  • Save on energy bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% because you need less energy.
  • Protect your investment: If you have an older home, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
  • 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 Dover

Each window installer provides varying services and has different prices depending on a few factors.

How Much Do New Windows Cost?

Typically, Dover homeowners can expect their replacement window installations to range from $250 to $1,200. The average cost is at approximately $600. But costs 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 installers also provide door replacements, which will add extra costs to your project.

Bear in mind that energy-efficient windows may have a higher price, but Energy Star predicts the upgrade will save you between $101 and $583 per year when you replace single-pane windows and between $27 and $197 per year when replacing double-pane, clear glass windows. Your exact savings will vary based on your local climate, energy rates and individual home characteristics.

We advise getting free quotes from several window installers to find the one that works best for your budget.

What Services do Window Installers Offer?

There are typically two kinds of window replacement services: full-frame and pocket installations.

A full-frame installation replaces the complete window, such as the sill, frame, trim and the window panes. Because this kind of installation is more involved, it will cost more than a pocket installation. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations less labor-intensive and costly. But, if the frame has any damage or rot, you should opt for a full-frame installation instead.

If you’re hiring a reputable window installation company, your company will be able to advise you on the best type for your project. In Dover, the choice will mostly be based on the efficiency of your home and the condition of your existing frames.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Window Veteran

Window World

★★★★★
4.5
  • 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 evaluated dozens of companies before settling on these. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:

Service Area

Because this is a guide for Dover, we paid more attention to companies that serve the city. There are certainly other reputable providers that didn’t make the cut because they wouldn’t be able to serve homeowners in Dover.

Work Quality

When installing 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 of window you get. 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

Customer feedback is another very important review factor. If the majority of customers don’t have positive things to say about their experience with a certain window installation company, it won’t be featured on EcoWatch.

Cost

This one is a give-and-take: as with other services, cheap window installation companies may not provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that provide a wide range of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed, windows are a considerable investment, so you’ll want to make sure that investment is well protected. Window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Due to Dover’s climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Dover window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.

Dover, DE Window Replacement FAQs

How much should a window install cost?

The national average cost to install a single window is about $600 but can range between $200 and $1,200, depending on a variety of factors. The price is often dependent on the type and material of the window, the size 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 home, including casement windows, bay windows, double-hung and single-hung windows, awning windows, transom windows, picture windows and slider windows.

What services do window installation companies do?

Window installation professionals travel to your house to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is done.

How do you know it’s time to replace your windows?

Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Other than that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.