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10 Best Window Replacement Companies in Dover, NH

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Written By David Cusick

Last Updated February 2024

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 add an extra $422 a year on your electric bills. Picking the best company for you is an important decision. That's why we've created this list of the best window installation companies in Dover.

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Top 10 Best Window Replacement Companies in Dover

Renewal by Andersen Window Replacement

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

Window World of New Hampshire

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735 E Industrial Park Dr Unit A, Manchester, NH 03109 (603) 935-9878 windowworldnewhampshire.com

Timely service

Educational website

Price transparency

Good customer service

Free assessment

Services Offered

Double-hung
Bay windows
Glass doors
Window replacement/installation

DaBella

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

Good customer service

Timely service

Services Offered

Double-hung
Window replacement/installation
Vinyl frames
Glass doors

Pella Windows & Doors of Newington

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25 Fox Run Rd Suite 2, Newington, NH 03801 (603) 725-4690 pellabranch.com

Good customer service

Educational website

Free assessment

Price transparency

Services Offered

Glass doors
Window replacement/installation
Bay windows
Wood frames
Vinyl frames
Double-hung

Glass Routes Co

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181 Littleworth Rd, Madbury, NH 03823 (603) 742-2600 glassroutes.net

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Mirrors
Window replacement/installation
Custom glass
Glass showers
Vinyl frames

Portland Glass of Dover

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119 New Rochester Rd, Dover, NH 03820 (603) 716-9167 portlandglass.com

Good customer service

Free assessment

Educational website

Price transparency

Services Offered

Energy-efficient options
Window replacement/installation
Glass repair

Southers Construction

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12 Crosby Rd, Dover, NH 03820 (603) 734-4572 southersconstruction.com

Price transparency

Timely service

Free assessment

Educational website

Good customer service

Services Offered

Double-hung
Bay windows
Window replacement/installation

Dover Roofing LLC

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120 Durham Rd, Dover, NH 03820 (603) 498-5741 doverroofingcontractors.com

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Good customer service

Price transparency

Educational website

Services Offered

Skylights
Window replacement/installation

Interstate Glass & Mirror Inc

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228 NH-108, Somersworth, NH 03878 (603) 742-0600 interstateglass.com

Price transparency

Services Offered

Mirrors
Screen repair
Glass doors
Bay windows
Window replacement/installation
Glass showers

Great Bay Roofing & Exteriors

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12 N Main St, Rochester, NH 03867 (603) 748-7254 greatbayroofing.com

Good customer service

Price transparency

Educational website

Free assessment

Services Offered

Skylights
Window replacement/installation
Bay windows
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?

Window installation and replacement costs vary based on several 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 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

Installing new energy-efficient windows can greatly improve your home's appearance, value, noise reduction, comfort, and insulation. Some clear indicators it's time for new windows include the following:

  • Drafts and cold air leaking in from old, loose-fitting windows.
  • High energy bills and discomfort from poor insulation.
  • Inefficient and outdated window styles that take away from your house's curb appeal.
  • Windows that are difficult to close, open, and lock properly due to age and wear.
  • Condensation issues, fogging between window panes, or rotting window frames letting in moisture.

How To Choose a Window Company

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

Experience

Make sure you hire a seasoned local installer with a long record of successfully installing and replacing windows. Installers that have been operating locally for many years are more likely to have a deep knowledge of the local climate and local homeowners' needs. Get references from recent clients to confirm a company provides quality installations.

Certifications

Look for installers that are backed by leading window manufacturers and accredited by top industry associations, including the Fenestration and Glazing Industry Alliance, formerly known as the AAMA. Appropriate credentials mean that a provider has been appropriately trained in quality installation methods. Ensure installers are employees, not subcontractors, and verify that any technicians working on your home hold the right certifications.

Reputation

Spend time going through online reviews, checking the Better Business Bureau, and asking for references from people in your area. Review customer feedback to verify that a company regularly provides good workmanship and customer service. Avoid companies with complaints of poor work or unfinished jobs.

Process

A reputable window installer will be able to provide a detailed project plan, precise timelines, clear expectations, and an overview of all material and installation options. Avoid companies that provide vague quotes or schedules. Insist on regular contact through the whole process to avoid surprises further into the project.

Warranties

Seek out window installers that provide installation guarantees on materials and labor. This indicates confidence in their work. Research companies with unlimited lifetime warranties that can transfer to new homeowners.

Materials

Make sure your window installer offers durable, long-lasting window options and top energy-saving window brands that fit your budget. Look for good energy ratings, enhanced UV protection, and design flexibility. Check that the window materials also include 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. This enables installers to do their work with less worry about the weather.

The best type of replacement window for your Dover home will vary based on the age of your home, 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. Wood windows can provide a traditional look and appearance, while vinyl windows are more popular in more modern homes. Fiberglass windows are also a popular choice, as they are energy efficient and durable.

Windows made from vinyl, fiberglass, or wood are known to last the longest, with some lasting up to 45 years. Vinyl windows are particularly durable and low-maintenance, making them an excellent choice if you want windows that will last a long time. Extra glazing can help reduce your cooling and heating bills over time.

The typical window installation process takes anywhere from one to two days, depending on the size and number of window openings being replaced. This includes taking out the old windows, measuring for the new windows, installing the new windows, and caulking them in place. In general, it takes about 30 minutes to install each window.

In some cases, you can install your own windows, but it's generally recommended to hire a professional. It's important to consider the local climate when replacing windows, as it will have an effect on the process. For example, the temperatures in Dover can reach an average low of 40, so you need to think about energy-efficient windows that can protect from the cold. It's also important to get the measurements right and understand the instructions for installation. Hiring a professional for your window replacement project will guarantee that everything is installed correctly.

Getting windows installed by a professional can provide a number of benefits. Professional installers can ensure that your windows are properly installed, sealed, and insulated, preventing air leakage and maximizing energy efficiency. Professional installers are also well-equipped with the necessary tools and techniques to get the job done, which can save you time and money.

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