Expert Advice On Improving Your Home

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10 Best Window Replacement Companies in Dover, NH

More than 380 people have received a free quote in the last 60 days.

Last Updated: February 25, 2025

Whether you want to increase your home's value or decrease your energy bills, replacing your windows is a great idea. If your windows are leaky or damaged, 25–30% of your home’s heat or cool air could be leaking out, according to the Department of Energy. In Dover, this can equal an extra $422 per year on your electricity bills. When searching for a window installer, it's important to choose the right one, which is why we've assembled this guide to the best window installers in Dover.

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.
Top Pick
4.0/5
  • Holds high customer ratings
  • Offers energy-efficient products
  • Provides a lifetime labor warranty
Best Customer Service
4.0/5
  • Award winning company
  • Products made in the US
  • Knowledgeable sales representatives

Top 10 Best Window Replacement Companies in Dover

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

Renewal by Andersen Window Replacement

Renewal by Andersen Window Replacement Logo

Our Rating

User Rating

66 Industrial Park Rd, Saco, ME 04072 (207) 358-6094 windowsdoorsportland.com

Good customer service

Educational website

Price transparency

Free assessment

Services Offered

Energy-efficient options
Glass doors
Bay windows
Custom window designs
Window replacement/installation
Double-hung
Vinyl frames
Metal frames

DaBella

DaBella Logo

Our Rating

User Rating

13 Red Roof Ln Suite 201, Salem, NH 03079 (603) 691-2339 dabella.us

Good customer service

Timely service

Services Offered

Double-hung
Glass doors
Window replacement/installation
Vinyl frames

Accurate Glass, Inc.

Accurate Glass, Inc. Logo

Our Rating

User Rating

32d Holton St, Woburn, MA 01801 (781) 935-9999 accurateglass.com

Full-service provider

Online window shopping

Good customer service

Free assessment

Extensive online portfolio

Services Offered

Custom window designs
Vinyl frames
Mirrors
Metal frames
Glass showers
Custom glass
Glass doors
Window replacement/installation
Window repair

Nashua Glass

Nashua Glass Logo

Our Rating

User Rating

110 Chestnut St, Nashua, NH 03060 (603) 882-0648 nashuaglass.com

Free assessment

Price transparency

Good customer service

Services Offered

Mirrors
Custom glass
Storm/impact windows
Glass showers
Glass repair
Glass doors
Tempered glass
Window replacement/installation

Clear Choice Home Improvements

Clear Choice Home Improvements Logo

Our Rating

User Rating

8025 S Willow St #107, Manchester, NH 03103 (603) 232-0237 clearchoicehomeimprovement.com

Educational website

Price transparency

Timely service

Good customer service

Free assessment

Services Offered

Wood frames
Double-hung
Bay windows
Glass doors
Window replacement/installation
Glass showers
Energy-efficient options

Lighthouse Contracting Group, LLC

Lighthouse Contracting Group, LLC Logo

Our Rating

User Rating

104 Lily Pond Rd Unit A, Gilford, NH 03249 (603) 567-4172 lighthousecontractinggroup.com

Educational website

Good customer service

Free assessment

Price transparency

Services Offered

Window replacement/installation

Rite Window

Rite Window Logo

Our Rating

User Rating

41 Industrial Dr #9, Exeter, NH 03833 (603) 945-7126 ritewindow.com

Price transparency

Good customer service

Educational website

Free assessment

Services Offered

Energy-efficient options
Glass showers
Double-hung
Glass doors
Window replacement/installation
Bay windows

The Window Source NH

The Window Source NH Logo

Our Rating

User Rating

779 Lafayette Rd Suite 1, Seabrook, NH 03874 (603) 764-7212 windowsourcenh.com

Educational website

Free assessment

Price transparency

Good customer service

Services Offered

Bay windows
Vinyl frames
Energy-efficient options
Double-hung
Storm/impact windows
Window replacement/installation
Glass doors

Window World of Boston

Window World of Boston Logo

Our Rating

User Rating

10 Wall St, Burlington, MA 01803 (781) 202-6460 windowworldofboston.com

Free assessment

Good customer service

Timely service

Price transparency

Educational website

Services Offered

Bay windows
Glass doors
Energy-efficient options
Double-hung
Window replacement/installation

Guaranteed Aluminum & Vinyl Inc

Guaranteed Aluminum & Vinyl Inc Logo

Our Rating

User Rating

349 Bridge St, Lowell, MA 01850 (978) 452-2392 lowell-window-replacement-glass-repair.com

Price transparency

Good customer service

Services Offered

Energy-efficient options
Glass repair
Window replacement/installation
Vinyl frames
Screen repair
Glass doors
Bay windows
Window repair
Double-hung
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Dover?

The price of window installation or replacement will be influenced by a number of factors, including the materials you choose, how difficult your windows are to access or install, and the number and size of the windows. On average, Dover homeowners will spend roughly $280 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

New, energy-efficient windows can substantially improve your home's noise reduction, insulation, appearance, comfort, and value. Obvious signs that it's time for window replacement include the following:

  • Drafts and cold air coming in through old, loose-fitting windows.
  • A chilly house and high energy bills from poor window insulation.
  • Outdated and inefficient window styles that reduce your home’s curb appeal.
  • Windows that are difficult to close, open, or lock properly due to age and wear.
  • Condensation issues, fogging between window panes, or rotting window frames that allow moisture intrusion into the home.

How To Choose a Window Company

For a successful window replacement, you need to locate an installation contractor with proven expertise. Below, we cover the most important qualifications for selecting a window installer.

Experience

Seek out an established local window company with many years or decades of success installing all types of windows. Seasoned providers are more likely to have an in-depth knowledge of Dover's climate and local homeowner requirements. To verify a provider's reputation, request references from recent customers.

Certifications

Choose an installer that’s certified like leading window companies, and that has Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Suitable credentials indicate they've received appropriate instruction in installation best practices. Make sure installers are staff rather than subcontractors, and confirm that any technicians working on your home have certification.

Reputation

Read through online feedback from past clients, check the Better Business Bureau (BBB), and request local references. Review customer feedback to verify that the provider consistently delivers quality work and good customer service. Avoid contractors that have complaints of shoddy work or unfinished jobs.

Process

A good window installer will be able to provide a detailed project plan, reasonable timelines, clear expectations, and an overview of all material and installation options. Avoid companies that provide vague quotes or schedules. Look for regular contact through the whole process to avoid surprises once installation is underway.

Warranties

Search for window installers that provide installation guarantees on materials and labor. This demonstrates confidence in their work. Target companies that offer unlimited lifetime warranties that can pass to new homeowners.

Materials

Verify that your window provider works with trusted, long-lasting brands, offers energy-efficient window options, and fits your budget. Look for window options with good energy ratings, enhanced UV protection, and design flexibility. Check whether the materials include their own manufacturer warranties.

Frequently Asked Questions About Window in Dover, NH

In Dover, the best time to install windows is when temperatures are mild, generally between the spring and fall. These conditions allow installers to work with less worry about the weather.

The best type of replacement window for your Dover home will depend on your home's age, as well as your personal style and budget. You'll want to consider the style of your home — such as if it's older — so your new windows match. Wooden windows can provide a traditional look and feel, while vinyl-framed windows tend to be popular in more modern homes. Fiberglass windows are also a popular choice, since they can be energy efficient and durable.

The types of window that typically last longest are ones made of vinyl or wood, with triple glaze for extra insulation. Vinyl windows are known for their durability and require little maintenance, and wood windows provide a more timeless look. Tripling up on the glazing will reduce energy costs over time.

The length of the installation process varies based on a range of factors, including the number of windows to be installed, the size and type of windows being installed, and the complexity of the installation job. On average, window installation can take anywhere from one day up to a few days, with each window taking about 30 minutes to install.

Replacing your own windows can be a complex task, especially in Dover, where temperatures can get quite cold. It's generally recommended to hire a skilled window installer. A professional installer has the knowledge and experience that ensures your windows are correctly installed and that you get the most out of your investment.

Hiring a professional window installer helps make sure the job is done correctly. Professional installers will measure in order to get a perfect fit and use the right materials and techniques to ensure your windows will be correctly sealed and secure. Additionally, professional installers have access to higher quality materials and more knowledge than the average person, so you can count on your windows to be installed correctly and stand for years to come.

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