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Best Window Replacement Companies in O'Fallon, MO

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Written By Max Peterson|Last Updated: April 18, 2024

Replacement windows can defend your home from leaks and drafts, boost its energy efficiency, and give it additional aesthetic appeal. Local contractors recognize that homeowners would prefer not to pay a high price for window replacement in O'Fallon. They work with affordable materials that don't compromise on durability.

Top Pick
4.7
  • Full-service installation
  • Large window selection
  • Nearly 30 years of experience
Best Financing
4.4
  • Full-service installation
  • In-house, U.S.-made products
  • More than 70 years of experience
Most Customizable
4.3
  • Full-service remodeling
  • 96% satisfaction rate
  • More than 30 years of experience

Top 10 O'Fallon Window Installation Companies

We've compiled this list of companies that specialize in window replacement in O'Fallon.

The This Old House Reviews Team evaluated dozens of window companies in and around O'Fallon. We used the following metrics to select the best window replacement installers:

  • Customer reviews and recommendations
  • Services and warranties
  • Professional experience and licensure
  • Energy-efficiency guarantees
  • Product quality
Champion Replacement Windows of St. Louis Logo

Champion Replacement Windows of St. Louis

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4.5/5
Based on 369 customer reviews.

Services Offered

Glass DoorsDouble-HungWindow Replacement/installationBay Windows

Highlights

  • Free assessment
  • Price transparency
  • Good customer service
29 Cassens Ct, Fenton, MO 636-764-0470 championwindow.com
Window World of St. Louis Logo

Window World of St. Louis

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4.8/5
Based on 718 customer reviews.

Services Offered

Vinyl FramesCustom Window DesignsDouble-HungWindow Replacement/installationGlass DoorsBay Windows

Highlights

  • Timely service
  • Educational website
  • Good customer service
3600 Rider Trail S, Earth City, MO 314-993-1800 windowworldstlouis.com
Gateway General Contractors Logo

Gateway General Contractors

4.7/5
Based on 45 customer reviews.

Services Offered

Window Replacement/installation

Highlights

  • Free assessment
  • Price transparency
  • Good customer service
9031 Veterans Memorial Pkwy, O'Fallon, MO 636-515-5868 gatewaygeneralcontractorsllc.com
Home Comfort Exteriors Logo

Home Comfort Exteriors

4.7/5
Based on 44 customer reviews.

Services Offered

Window Replacement/installationEnergy-Efficient Options

Highlights

  • Free assessment
  • Price transparency
  • Good customer service
7839 Mexico Rd, St Peters, MO 636-928-8900 homecomfortexteriors.com
Windows Doors & More LLC Logo

Windows Doors & More

4.6/5
Based on 103 customer reviews.

Services Offered

Window Replacement/installationEnergy-Efficient Options

Highlights

  • Educational website
  • Price transparency
  • Good customer service
3481 New Town Blvd, St Charles, MO 636-724-5291 wdsmore.com
Glass Doctor of St. Charles, MO Logo

Glass Doctor of St. Charles, MO

4.5/5
Based on 53 customer reviews.

Services Offered

Custom GlassTempered GlassGlass RepairGlass DoorsGlass ShowersWindow Replacement/installationMirrorsEnergy-Efficient OptionsWindow Repair

Highlights

  • Price transparency
  • Good customer service
  • Educational website
3910 Old Hwy 94 S Ste 105a, St Charles, MO 314-962-4344 glassdoctor.com
Floyd Glass & Window Logo

Floyd Glass & Window

4.4/5
Based on 167 customer reviews.

Services Offered

Window RepairCustom GlassWindow Replacement/installationMirrorsGlass Showers

Highlights

  • Free assessment
  • Good customer service
  • Price transparency
30 Triad South Dr, St Peters, MO 636-922-3569 floydglass.com
Gateway Door and Contracting Logo

Gateway Door and Contracting

4.7/5
Based on 147 customer reviews.

Services Offered

Window Replacement/installation

Highlights

  • Price transparency
  • Free assessment
  • Educational website
3711 Mueller Rd, St Charles, MO 636-577-1430 gatewaydoorstl.com
Jones Home Improvements Logo

Jones Home Improvements

4.4/5
Based on 27 customer reviews.

Services Offered

Window Replacement/installation

Highlights

  • Price transparency
  • Good customer service
  • Free assessment
5305 5th St, Cottleville, MO 636-317-1977 joneshi.com

More Local Window Companies

Mad City Windows & Baths

User Reviews: 4.6/5 

959 Harmsted Court
St Charles, MO 63301

Bath Planet of St. Louis & More

User Reviews: 4.4/5 

2424 Hwy 94 South Outer Rd
St Charles, MO 63303

Lakeside Renovation & Design

User Reviews: 4.4/5 

139 Chesterfield Industrial Blvd
Chesterfield, MO 63005

STL Windows and Doors

User Reviews: 4.6/5 

4200 Shoreline Dr
Earth City, MO 63045

Chaney Windows And Doors

User Reviews: 4.7/5 

80 Weldon Pkwy
Maryland Heights, MO 63043

Universal Windows Direct of St Louis

User Reviews: 4.6/5 

11993 Borman Dr
St. Louis, MO 63146

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about O'Fallon
Annual Energy Efficient Windows Savings:$382
Average Max Temp:65°F
Average Min Temp:46°F
Average Daily Sunlight:55%
Average Annual Snowfall:11.3"
Average Monthly Precipitation:3.41"

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

How To Choose a Window Company in O'Fallon

It's crucial to find a window installer that meets your unique values, needs, and preferences. Consider the following areas during your hunt:

Window Cost by Type

When it comes to window replacement, value is paramount. Each window you buy should deliver maximum durability at an affordable price point. Choosing economy windows could actually raise your overall cost, since they come with a reduced lifespan and more intensive maintenance needs. The final cost of your window replacement will rely on the particular styles, sizes, and materials you need. Transom windows are inexpensive with their simple size and straightforward form factor, while a sweeping, custom-size picture window will cost more. If you're unsure, a window provider can help you decide which options are ideal for your home.

This table shows average prices for various window types to give you an idea of what to expect.

Window TypesAverage Cost
Arched$232-$1423
Awning$335-$935
Bay$773-$5738
Custom$344-$956
Casement$267-$1551
Double-hung$124-$807
Egress$229-$572
Glass Block$45-$580
Picture$201-$1487
Single-hung$90-$1530
Skylight$114-$1381
Sliding$263-$1338
Storm$54-$378
Transom$280-$586

Window Material Cost

Replacement window prices also vary based on material. Each option provides different benefits depending on your climate and energy efficiency needs. Fiberglass and vinyl are readily-available materials, so they tend to cost less. Likewise, composites and aluminum look sleek and stay strong against the elements, so they tend to cost more.

Window TypesAverage Cost
Aluminum$54-$1530
Composite$552-$1241
Fiberglass$90-$773
Vinyl$186-$1721
Wood$276-$1551

Other Window Replacement Costs

Ask each company you're considering about warranty fees, labor costs, and permit fees. This will help you get a better picture of the financial commitment involved in the project.

Experience and Training

Choose a business that focuses on window replacement and installation, and look for this information on its website:

  • How long it's been in business
  • Photo galleries of completed projects
  • Private credentials attesting to its workmanship
The more experience a company has, the better its service and workmanship.

Licensing and Credentials

Missouri doesn't require window installers to get a state license. Instead, local authorities set their own licensing requirements. Speak to your city hall to see what rules they have for window installers, and look for businesses with trusted private accreditations in your own research. A few good places to start include certificates from the American Window and Door Institute or FGIA.

Types of Windows Offered

No two businesses offer the same window designs and materials. Look for one that focuses on the type you want for your home.

Finally, pay close attention to the framing materials that an installer uses. Each window frame material has a different price point, energy efficiency level and life span. A company will usually specify whether the windows they place use vinyl, composite, fiberglass, wood, or metal.

Customer Feedback

One of the most surefire ways to screen a company is to read what other customers have written about their experiences. You can find customer reviews on websites like Google, the BBB, Yelp, and Trustpilot. Referrals can also help you in your company search. Ask each company you're interested in for a list of references, and talk to family and friends about who they use for window installations.


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Frequently Asked Questions About Window Replacement in O'Fallon

How could new windows help my energy efficiency?

O'Fallon homeowners could save up to $380 per year by installing efficient windows. They'll also lower their property's carbon dioxide emissions by 760 pounds per year.

According to the federal Department of Energy, as much as 33% of a house's HVAC usage is to compensate for the heat or cold entering through windows. Energy-efficient windows help keep heat out in the summertime and in during the wintertime, improving your comfort and furthering your dollar.

Do I need a building permit to replace my home's windows?

Replacing windows may require obtaining permits, based on your local building codes and regulations. Some towns mandate permits for window replacement projects if they involve structural changes or alterations to the window openings. We recommend checking with your local building department or consult a professional before undertaking any window replacement work.

What kinds of repairs can my window company perform?

Window companies can handle a variety of repair jobs, ranging from broken glass and screens to faulty seals and mechanisms.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Window Resources

National Windows Company Ranking Methodology

Sources

Energy Star