20 Best Window Companies in Affton, MO (2025 Reviews)

How Installing Energy-Efficient Windows in Affton Saves You Money

There are several benefits of switching to energy-efficient windows. A few reasons you may want to consider making the change are the following:

• Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
• Decrease your carbon footprint: In Affton, you can lower your indirect greenhouse gas emissions by about 763 pounds per year after you install energy-efficient windows.
• Save money on energy bills: The Department of Energy estimates that heat gained or lost through windows makes up about 25-30% of energy use in your home. Installing energy-efficient windows can help decrease that amount, which helps you save $376 a year on your bills.
• Protect your investment: Upgrading your windows is an important part of maintaining your property and its real estate value, particularly if your home is on the older side.

Estimated Cost of Window Replacement in Affton

Each window installer provides various services and has varying costs based on a few factors.

How Much Do New Windows Cost?

On average, homeowners in Affton can expect that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at around $600. How much it will cost varies based on several factors, including material, number of windows, type, the location of your home, size and more.

With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more initially, but by increasing the efficiency of your home — particularly during the summer and winter — they can give you decades of energy savings. According to Energy Star, buying certified energy-efficient windows can save Affton homeowners $376+ a year after replacing single-pane windows.

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

What Services do Window Installers Offer?

The first question to ask yourself when planning a window installation is: Should you get a full-frame installation or a pocket installation?

Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has a great amount of rot or deterioration. Full-frame installations are more involved and will increase overall costs. A pocket installation entails installing a new window without replacing the frame. This means instead of tearing out the whole unit and rebuilding it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.

If you’re unsure which window installation service you need, your installer should be able to help you out. In general, the choice is based on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

How We Choose the Best Window Installers in Affton

EcoWatch differs from most reviewers because we evaluate these companies through a sustainability lens. We have reviewed the best window installers in Affton mainly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows can reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:

Service Area

Because this is a guide for Affton, we only included companies that provide services to the city. There are certainly other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Affton.

Work Quality

When selecting new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand you opt for. 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 customer feedback to find the companies with the highest rates of customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across nearly every category, including cost, professionalism, quality of parts, warranty, quality of installation and more.

Cost

This one is a give-and-take: as with other services, cheap window companies may not provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a spectrum of price and financing options so they’re accessible to most homeowners.

Warranty

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