The Best Window Installers in Saint Louis, MO

Compare the highest-rated windows professionals in Saint Louis, Missouri. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Feldco Windows, Siding & Doors

4.7
(250 reviews)
Verified

Feldco is a well-known regional company specializing in high-quality, energy-efficient window replacements. They are recognized for their direct-to-consumer model, which includes their own manufacturing and installation teams, ensuring quality control from start to finish. They offer a strong warranty and focus on modern, low-maintenance vinyl windows.

(Serves St. Louis from regional headquarters; local office/showroom information provided upon consultation)

Specialties & Features

Energy-efficient window replacement
New window installation
Custom window solutions

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Window Nation

4.8
(180 reviews)
Verified

Window Nation is a highly-rated provider with a strong national presence and a dedicated local team in St. Louis. They are praised for their professionalism, extensive product selection from leading manufacturers, and thorough, clean installation services. They offer free in-home estimates and focus on both replacement and new construction windows.

183 Lackland Hill Dr, St. Louis, MO 63146

Specialties & Features

Residential window replacement
Custom window solutions
Window repair services

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Renewal by Andersen of St. Louis

4.9
(150 reviews)
Verified

As the local branch of the premium national brand, Renewal by Andersen specializes in high-end, custom-made Fibrex® composite windows. They are known for superior craftsmanship, exceptional energy efficiency, and a full-service, white-glove installation experience. Their products are custom-built for each opening, ensuring a perfect fit and maximum performance.

1660 N Main St, O'Fallon, MO 63366 (Serves the entire St. Louis metro area)

Specialties & Features

Custom window solutions
Energy-efficient windows
New window installation

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes

Why These Are the Top Windows Contractors in Saint Louis

The window replacement and installation market in Saint Louis is robust and competitive, driven by the city's mix of historic and modern homes and a climate that demands energy efficiency. The market features a blend of large, reputable national franchises and established local contractors. Quality is generally high among the top-tier providers, who typically offer strong warranties and professional installation. Competition keeps pricing fair, but consumers will find a clear tiered pricing structure. Basic vinyl window replacement for a standard home can range from $5,000 to $12,000, while high-end, full-frame custom replacements (like those from Renewal by Andersen) can range from $15,000 to $30,000 or more. Energy-efficient features, such as Low-E glass and argon gas fills, are now standard offerings from reputable companies due to both consumer demand and the seasonal temperature extremes in St. Louis.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Saint Louis regulations and climate

Frequently Asked Questions About Windows in Saint Louis

Get answers to common questions about windows services in Saint Louis, Missouri.

1What is the typical cost range for a full window replacement in a Saint Louis home?

In the Saint Louis metro area, the cost for a full-frame window replacement typically ranges from $600 to $1,200 per window, including professional installation. The final price depends on the window material (vinyl, wood, fiberglass), size, style, and energy efficiency features. Given Missouri's variable climate with hot, humid summers and cold winters, investing in quality, energy-efficient windows like double-pane Low-E glass can offer significant long-term savings on utility bills.

2When is the best time of year to schedule window installation in Saint Louis?

The ideal times are during Saint Louis's milder spring and fall seasons, specifically April-May and September-October. This avoids the peak humidity and heat of summer, which can complicate sealing, and the unpredictable ice and snow of winter that can delay exterior work. Scheduling during these shoulder seasons also often provides better availability with local installers compared to the busy summer renovation period.

3Are there any local Saint Louis or Missouri regulations I need to be aware of for window replacement?

Yes, you should confirm if your home is in a local historic district (like Lafayette Square or Soulard) or has a neighborhood covenant, as these often have strict guidelines on window appearance that require approval. For all homes, installations must comply with the 2018 International Residential Code (adopted by Missouri), which includes requirements for egress window size in bedrooms. A reputable local installer will handle the necessary permits from the City of Saint Louis or your specific municipality.

4How do I choose a reliable window installation company in the Saint Louis area?

Prioritize local, established companies with strong reputations, verified by checking reviews on the Better Business Bureau (BBB) of Eastern Missouri and Southern Illinois and local Google reviews. Ensure they are licensed and insured in Missouri, and always ask for local references you can contact. Be wary of high-pressure, door-to-door sales tactics that are unfortunately common in the region following major storms.

5What are the most important energy efficiency features for windows in Missouri's climate?

For our climate with both heating and cooling demands, look for double-pane glass filled with argon gas and a Low-E (low-emissivity) coating. The Low-E coating helps reflect infrared heat—keeping heat out in summer and retaining indoor warmth in winter. Also, ensure the windows have a low U-factor (insulating ability) and Solar Heat Gain Coefficient (SHGC) appropriate for our region; a qualified Saint Louis installer can recommend the best balance.