20 Best Window Companies in Dover, NH (2023 Reviews)

Looking to improve your home's insulation? The top window replacement companies can help.

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 September 15, 2023

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.

Whether you're updating for aesthetics or have old windows, windows play a key role in conserving electricity in your home. According to the Department of Energy, heat or cool air lost through old or damaged windows could be responsible for 25-30% of household energy climate control usage.

Replacement windows improve the insulation in your home, not only making you and your family more comfortable during extreme temperatures, but also saving you money and helping the environment.

So if you're constructing a new home, renovating or changing out old windows in Dover, this guide is 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

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

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 providers that service the Dover area to find the top window installation companies that fit our standards. The providers in this article scored best in our categories, including energy-efficient offerings, customer service, price, availability and more.

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. This company has been in business since 1995 and currently serves 200 locations nationwide. The provider has a lot of positive reviews from customers on online review websites.

It 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

Its 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 make sure you mention that you’d like Energy Star windows when inquiring.

How much does Window World cost in Dover?

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

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. This company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia. The provider has a lot of positive reviews from customers on online review websites.

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 Windows

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. Not all of Andersen’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Dover?

Andersen does not list 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. The best way to get more accurate information is to get a free quote from the company.

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 provides the best window installation for businesses in Dover. It's 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. This company has 23 years of experience in the windows business, and it has become one of the best companies in Dover. Many positive reviews on customer review websites back the provider's reputation.

If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, this may be the right company for you.

Energy Efficiency of Aeroseal Windows Windows

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. Not all of Aeroseal’s offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.

How much does Aeroseal Windows cost in Dover?

Aeroseal does not list prices on its website, but it provides high-quality windows at a competitive price point. For more detailed information on the cost, you can request a quote from the company.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers 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. This window installation company has been in business since 2002 and currently serves 27 states nationwide.

You may want to consider choosing Universal if you're interested in a company that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

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. Not all of Universal’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Universal Windows Direct cost in Dover?

Universal does not list prices 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. The best way to get more accurate information is to get a free quote from the company.

We try to be unbiased and transparent by mentioning pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.

More Window Companies in Dover

Renewal by Andersen Window Replacement

Saco, ME
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Aluminum Window Frames
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Full-Service Installations
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: https://windowsdoorsportland.com/
Address: 66 Industrial Park Rd, Saco, ME 04072
Phone: (207) 358-6094

Window World of New Hampshire

Manchester, NH
4.1
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Fast Delivery

Website: https://www.windowworldnewhampshire.com/
Address: 735 E Industrial Park Dr Unit A, Manchester, NH 03109
Phone: (603) 935-9878

Pella Windows & Doors of Newington

Newington, NH
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Custom Window Designs

Website: https://www.pellabranch.com/new-england/showrooms/newington/
Address: 25 Fox Run Rd Suite 2, Newington, NH 03801
Phone: (603) 725-4690

Portland Glass of Dover

Dover, NH
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Residential Windows

Website: https://www.portlandglass.com/dover/
Address: 119 New Rochester Rd, Dover, NH 03820
Phone: (603) 716-9167

Granite State Glass

Portsmouth, NH
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Aluminum Window Frames
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Fast Delivery

Website: http://granitestateglass.com/
Address: 1 Mirona Rd, Portsmouth, NH 03801
Phone: (603) 436-0001

The Window Source NH

Seabrook, NH
4.3
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Sliding Glass

Website: https://www.windowsourcenh.com/
Address: 779 Lafayette Rd Suite 1, Seabrook, NH 03874
Phone: (844) 423-3023

Focalpoint Renovations

Seabrook, NH
3.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Full-Service Installations

Website: http://www.focalpointrenovations.com/
Address: 33 Worthley Ave, Seabrook, NH 03874
Phone: (603) 234-6704

Window Woman of New England

Amesbury, MA
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options

Website: http://www.window-woman.com/
Address: 44R Elm St, Amesbury, MA 01913
Phone: (978) 532-2070

Refined Home Services

Atkinson, NH
4.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Commercial Windows
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Glass Showers
  • Service icon Stained Glass
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Double-Hung

Website: http://www.refinedhomeservices.com/
Address: 6 Main St, Atkinson, NH 03811
Phone: (603) 702-5142

Atlantic Window Warehouse

Newburyport, MA
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Fast Delivery

Website: https://www.atlwindow.com/
Address: 155 State St, Newburyport, MA 01950
Phone: (978) 465-9696

Portland Glass of Biddeford

Biddeford, ME
4.2
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Commercial Windows

Website: https://www.portlandglass.com/biddeford/
Address: 150 Alfred Rd, Biddeford, ME 04005
Phone: (207) 808-7283

Morgan Exteriors

Hooksett, NH
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Bay Windows
  • Service icon Custom Window Designs

Website: http://morganexteriorswindows.com/
Address: 78 Londonderry Turnpike UNIT E1, Hooksett, NH 03106
Phone: (603) 895-2092

Universal Windows Direct of Manchester

Manchester, NH
4.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Bay Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Sliding Glass
  • Service icon Residential Windows
  • Service icon Window Replacement

Website: https://universalwindowsmanchester.com/
Address: 880 Candia Rd #8, Manchester, NH 03109
Phone: (603) 218-3756

Beach Glass & Window Company

Dayton, ME
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Commercial Windows
  • Service icon Window Replacement
  • Service icon Custom Window Designs
  • Service icon Residential Windows

Website: http://www.beachglassco.com/
Address: 371 Clarks Mills Rd, Dayton, ME 04005
Phone: (207) 934-4393

Corporate Office for Pella of Boston

Haverhill, MA
4.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung
  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Window Replacement

Website: https://www.pellabranch.com/boston/
Address: 45 Fondi Rd, Haverhill, MA 01832
Phone: (978) 373-2500

F.B.I. Contracting LLC

Concord, NH
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Timely Service

Services Offered

  • Service icon Stained Glass
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Commercial Windows

Website: http://www.fbillc1.com/
Address: 18 Loudon Rd #85, Concord, NH 03301
Phone: (603) 286-4414

DaBella

Salem, NH
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Window Replacement
  • Service icon Custom Window Designs

Website: https://dabella.us/location/salem/
Address: 13 Red Roof Ln Suite 201, Salem, NH 03079
Phone: (603) 691-2339

Dependable J M R Siding

Manchester, NH
4.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Fast Delivery
  • Service icon Double-Hung
  • Service icon Commercial Windows

Website: https://jmrsiding.com/
Address: 65 Pine Island Rd, Manchester, NH 03103
Phone: (603) 669-5020

Clear Choice Home Improvements

Manchester, NH
4.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Fast Delivery
  • Service icon Residential Windows
  • Service icon Window Replacement
  • Service icon Bay Windows
  • Service icon Glass Showers
  • Service icon Sliding Glass

Website: http://www.clearchoicehomeimprovement.com/
Address: 8025 S Willow St #107, Manchester, NH 03103
Phone: (603) 232-0237

Beckett Glass & Aluminum

Concord, NH
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Glass Showers
  • Service icon Aluminum Window Frames
  • Service icon Custom Window Designs

Website: http://www.beckettglass.com/
Address: 41 S State St, Concord, NH 03301
Phone: (603) 225-3600
Dover Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Dover, NH 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

Switching to energy-efficient windows can help improve the comfort of your home and help you save on power bills. Here's more information on how switching out your windows could help you:

  • Save money on electricity bills: Installing energy-efficient windows reduces your energy bills by about 12% since you need less energy.
  • Protect your investment: If you have a relatively old home, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.
  • Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
  • Better temperature control in your home: Energy-efficient windows can cut back on how much heat is lost through your windows when heating your home.

Estimated Cost of Window Replacement in Dover

Each window installation company offers various services and has varying costs depending on a few factors.

How Much Do New Windows Cost?

On average, Dover homeowners can expect their replacement window installations to range from $250 to $1,200. The most common installations sit at about $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 companies also provide door installations, which will add extra costs to your project.

It's important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars by decreasing your energy bills. Investing in certified energy-efficient windows can save Dover homeowners $459+ a year when replacing single-pane windows.

How much your window installation costs will also vary based on the type of material you choose for the frames. Wood windows are generally the most expensive, although it depends if they are completely wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first thing to ask yourself when planning on installing new windows is: Do you need a full-frame installation or a pocket installation?

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has a great amount of deterioration. Full-frame installations involve more time and labor and will increase overall costs. Pocket installations (or retrofits) entail replacing a window within the existing frame, which makes pocket installations more simple and affordable. However, if the frame has any damage or rot, you should opt for a full-frame installation instead.

Your window installation company can help you choose which type of installation you need.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

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 chose the above companies as the top window installation companies in the city. We have evaluated the best window installation companies in Dover mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to lower power 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 the Dover area so you can find the best window installation company near you.

Work Quality

When choosing 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 get. We do rate window installers higher 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 customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across nearly every category, including professionalism, cost, quality of parts, quality of installation, warranty and more.

Cost

Cheaper windows certainly don't mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing the prices of providers, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.

Warranty

Protecting your investment in new windows is important. That's why window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Because of Dover's climate, homeowners need to be wary of water damage, rot and low efficiency. We factored in local experience to reflect the ability of Dover window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

Dover, NH Window Replacement FAQs

How much should a window install cost?

The average cost to install a window ranges from $450 to $650. There are a variety of factors that influence how much it costs, which include the materials used in designing the windows, local labor costs, your property's location, the number of windows, how energy-efficient the windows are and styles and sizes of windows.

Which type of window should I get?

A window's energy efficiency is affected by several factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.

Can you install your own windows?

If you're handy and know how to replace a window, it's possible to install your own windows. However, if you don't have the time or skills, we recommend hiring a professional.

When is the best time of year to replace windows?

Replacement windows can be installed during any season, but autumn might be best. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into the house, so the temperature outside doesn't necessarily matter that much. What's more important than the temperature is that the weather should be dry.

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