20 Best Window Companies in St. Louis, MO (2024 Reviews)

How Installing Energy-Efficient Windows in St. Louis Saves You Money

Switching to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here's more information on how switching out your windows could help you:

• Reduce your carbon footprint: Decreasing the amount of energy you use also lowers your carbon emissions. You could reduce it by 763 pounds per year on average.
• Save money on power bills: Switching to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
• Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out harmful UV rays.
• Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, especially if you have an older home.

Estimated Cost of Window Replacement in St. Louis

Windows come in various shapes and sizes, so costs and services will vary greatly. Here are the average costs and services that you can find from window installers.

How Much Do New Windows Cost?

Although the national average cost to replace one window is about $600, it can range anywhere from $200 to $1,200. These estimates are based on specific characteristics of your installation, such as size, the location of your home, number of windows, material, type and more.

It’s also worth bearing in mind that energy-efficient windows will typically cost more upfront, but Energy Star predicts that upgrading the windows on your St. Louis home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

Costs will also vary depending on the material you choose for your window frames. Aluminum frames cost the least. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are somewhat expensive and provide good insulation. Composite frames made with wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.

What Services do Window Installers Offer?

In general, there are two kinds of window replacement services companies offer: full-frame and pocket installations.

Full-frame installations require replacing the full window — the sill, frame, trim and all. These are typically done when you want a different style for your windows or when it has a great amount of damage. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the old frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this type of installment if you have any pre-existing rot or water damage.

If you’re hiring a reputable window installation company, your company will be able to recommend the best type for your project. In St. Louis, the decision will mostly be based on how much damage there is currently and the age and condition of your existing frames.

How We Choose the Best Window Installers in St. Louis

In our hunt to find the most reliable, eco-friendly window installers in St. Louis, EcoWatch examined dozens of companies before landing on these. We have decided to assess the top window installers in St. Louis primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows can reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve a wide variety of states and cities so you can find the right window installation company near you.

Work Quality

When selecting new windows, the quality and range of services can often play just as important of a role in overall efficiency 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 online reviews to find the companies with the most customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including cost, professionalism, quality of installation, warranty, quality of parts and more.

Cost

This one is a give-and-take: similar to other services, cheap window companies are not going to provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that provide a wide range of price and financing options so they’re accessible to most homeowners.

Warranty

Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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