20 Best Window Companies in Stonington, CT (2025 Reviews)

How Installing Energy-Efficient Windows in Stonington Saves You Money

Energy-efficient windows can benefit you in several ways. Here are a few reasons you may want to take the plunge and make the switch:

• Save money on power bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of residential energy use. Upgrading to energy-efficient models can help decrease that amount, therefore saving you about 12% more on your bills.
• Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can lower your carbon footprint by about 12%, according to Energy Star.
• Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Upgrading your windows is an important part of maintaining your property and its value.
• Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Stonington

When researching window installation, each company offers varying services and costs. Let’s take a look at some typical costs and services.

How Much Do New Windows Cost?

Typically, Stonington homeowners can anticipate their replacement window installations to range from $250 to $1,200. The most common installations sit at about $600. But costs will differ considerably based on the quality of your products, the number of windows you need, the current condition of your home and your location. Many window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. Additional services will increase your overall project costs.

It’s important to remember that windows with higher efficiency may cost more initially but can save you hundreds of dollars by decreasing your energy bills. Investing in Energy Star certified windows can save Stonington homeowners $424+ a year when replacing single-pane windows.

Asking for free quotes from several companies is the best way to find out which one is right for you.

What Services do Window Installers Offer?

There are generally two types of window installation services: full-frame and pocket installations.

Full-frame installations entail replacing the complete window, including the frame, trim and sill. You most likely need a full-frame installation when you want to change the style of your windows or your window has significant damage. Because these installations are more involved, they will raise the overall cost. A pocket installation means replacing a window without taking out the complete frame, which is usually cheaper than a full-frame installation.

If you’re still debating which kind of installation to get, you can consult with your installer and get their advice. The choice mostly is influenced by how old the frames are and if there’s any damage present.

How We Choose the Best Window Installers in Stonington

EcoWatch reviews differ from other reviews because we evaluate these companies through a sustainability lens. Along with energy efficiency, we assessed several window installers in Stonington and assigned rankings using the following methodology:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve the Stonington area so you can find the right window installation company near you.

Work Quality

When picking new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the type of window 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 trends in recent online reviews to determine the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including warranty, cost, quality of installation, quality of parts, professionalism and more.

Cost

Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs low when 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 be certain that investment is well protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

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