20 Best Window Companies in Westport, MA (2025 Reviews)

How Installing Energy-Efficient Windows in Westport Saves You Money

There are quite a few benefits of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch are the following:

• Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help increase the value of your property if you decide to sell.
• Save money on power bills: Because energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save around $460 annually on your energy bills in Westport.
• Reduce your carbon footprint: In Westport, you can lower your indirect greenhouse gas emissions by about 139 pounds per year when you switch to energy-efficient windows.
• Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent damage from the sun's UV rays to your floors, carpets and furniture.

Estimated Cost of Window Replacement in Westport

When looking into window installation, each company offers varying services and costs. Let’s go over some average costs and services.

How Much Do New Windows Cost?

According to our research, the national average cost to replace a single window is around $600. However, window installation costs can range from $200 to $1,200 a window. These estimates vary depending on specific characteristics of your installation, like material, number of windows, size, type, the location of your home and more.

Whether or not you choose energy-efficient windows is another factor that will influence the cost. These will almost always cost more than other windows, but on the other hand, you can save about $460 a year on your energy bills in Westport.

Another factor that influences the total cost is the material of the frame you select. Aluminum frames are typically the least pricey and are sturdy and light, but they offer poor insulation. On the other hand, wood frames cost the most because they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

The first step when considering a replacement is to decide whether you need a full-frame or pocket installation.

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant deterioration. Full-frame installations are more involved and will increase overall costs. A pocket installation involves installing a new window without replacing the frame. So, instead of tearing out the whole window and reinstalling it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.

Your window installer should be able to help you choose which type of installation you need.

How We Choose the Best Window Installers in Westport

In our hunt to make your home improvements easier and more eco-friendly in Westport, the EcoWatch Reviews team landed on the above companies as the best window installation companies in the city. Along with energy efficiency, we reviewed several window installers in Westport and ranked them using the following methodology:

Service Area

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

Work Quality

When it comes to new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand of window you choose. 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

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have positive feedback about their experience with a certain installer, it won’t be featured on EcoWatch.

Cost

This one is a give-and-take: as with most services, cheap window installers are not going to provide the most quality service. On the other hand, we want to ensure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

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

Years of Experience

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