Cost of replacement windows with installation

Looking for cost of replacement windows with installation in St. Louis, MO? Call ReplacementWindows Services for a contact a provider — no obligation. Licensed window pros serve St. Louis and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Replacing windows is a custom project, so the final total depends on a few specific variables. The size and style of the frames you choose—like double-hung versus casement—will change the materials cost. We also look at the glass packages, such as double or triple-pane options, and any energy-efficient coatings that help with insulation. The number of windows being replaced and the current condition of your home’s exterior framing play a role in the labor needed. Exact pricing confirmed free on the call.

About this service

Replacing windows involves removing old units and ensuring the new ones are properly sealed and insulated. You should consider this service if your energy bills are spiking or if you hear too much outside noise. Exact pricing confirmed free on the call.

Frequently asked in St. Louis

What is the average cost of replacement windows in St. Louis?

What are the best replacement windows for the money in St. Louis?

For St. Louis's varied climate, look for windows with good insulation and energy efficiency ratings, such as double or triple-pane glass with Low-E coatings. Vinyl or fiberglass frames are often recommended for their durability and value. Discuss your needs with local installers to find options that balance performance and cost effectively.

What is the most affordable way to replace windows in St. Louis?

Is it worth replacing 30-year-old windows in St. Louis?

Yes, replacing 30-year-old windows in St. Louis is highly beneficial. Older windows are typically inefficient, leading to significant heat loss in winter and heat gain in summer, which increases energy bills. Modern replacement windows offer much better insulation, improving comfort and reducing your utility expenses considerably. It's a worthwhile upgrade.

How much does it usually cost to replace a window in St. Louis?

Who is Andersen windows' biggest competitor in St. Louis?

There are many reputable window manufacturers with strong offerings that compete with Andersen. Local installers in St. Louis often work with a variety of brands and can help you select windows that meet your specific needs for energy efficiency, durability, and aesthetics, regardless of brand name. They'll guide you to the best fit.

Also serving nearby: O Fallon · Springfield · Columbia · Champaign · Peoria

All cities in Missouri →

More on this: ENERGY STAR windows — efficiency ratings.