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Best Window Replacement Companies in O'Fallon, MO

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Written By Max Peterson | Last Updated: February 05, 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 providers in and around O'Fallon. We used the following metrics to select the best window replacement providers:

  • 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 320 customer reviews.

Services Offered

Window Repair Sliding Glass Doors Double-Hung Window Install & Replacement Storm Doors Bay Windows

Highlights

  • Good customer service
  • Price transparency
  • Free assessment
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 710 customer reviews.

Services Offered

Vinyl Frames Bay Windows Double-Hung Custom Window Designs Window Install & Replacement Sliding Glass Doors

Highlights

  • Educational website
  • Timely service
  • 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

Residential Windows Window Install & Replacement

Highlights

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

Home Comfort Exteriors

4.7/5
Based on 41 customer reviews.

Services Offered

Energy-Efficient Options Window Install & Replacement Residential Windows

Highlights

  • Good customer service
  • Price transparency
  • Free assessment
7839 Mexico Rd, St Peters, MO 636-928-8900 homecomfortexteriors.com
Hawthorn Home Exteriors Logo

Hawthorn Home Exteriors

4.7/5
Based on 20 customer reviews.

Services Offered

Fiberglass Frames Mirrors Window Install & Replacement Marvin Pella

Highlights

  • Free assessment
  • Educational website
  • Price transparency
30 Fern Brook Ct, O'Fallon, MO 636-597-6009 hawthornexteriors.com
Window Doors & More LLC Logo

Window Doors & More

4.6/5
Based on 71 customer reviews.

Services Offered

Window Install & Replacement Energy-Efficient Options

Highlights

  • Educational website
  • Free assessment
  • Price transparency
3481 New Town Blvd, St Charles, MO 636-724-5291 wdsmore.com
Windows Doors & More LLC Logo

Windows Doors & More

4.6/5
Based on 89 customer reviews.

Services Offered

Window Install & Replacement Energy-Efficient Options

Highlights

  • Good customer service
  • Free assessment
  • Educational website
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

Tempered Glass Glass Repair Glass Showers Custom Glass Window Install & Replacement Commercial Windows Mirrors Window Repair Glass Doors

Highlights

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

Floyd Glass & Window

4.5/5
Based on 167 customer reviews.

Services Offered

Glass Showers Custom Glass Window Repair Commercial Windows Window Install & Replacement Mirrors

Highlights

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

More Local Window Companies

Gateway Door and Contracting

User Reviews: 4.7/5 

3711 Mueller Rd
St Charles, MO 63301

Jones Home Improvements

User Reviews: 4.4/5 

5305 5th St
Cottleville, MO 63304

Bath Planet of St. Louis & More

User Reviews: 4.4/5 

2424 Hwy 94 South Outer Rd
St Charles, MO 63303

Mad City Windows & Baths

User Reviews: 4.6/5 

959 Harmsted Court
St Charles, MO 63301

Pella Windows & Doors of Greater St. Louis

User Reviews: 4.5/5 

17702 Chesterfield Airport Rd
Chesterfield, MO 63005

Lakeside Renovation & Design

User Reviews: 4.5/5 

139 Chesterfield Industrial Blvd
Chesterfield, MO 63005

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"

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How To Choose a Window Company in O'Fallon

An exceptional reputation is crucial when it comes to choosing a window provider. However, your chosen company should also align with your needs and understand your vision. Consider the following factors during your company search:

Window Cost by Type

When you're shopping for new windows, it's important to remember that there's more to cost than just purchase price. You want a window with top-notch quality and durability. Choosing economy windows could actually increase your overall cost, due to their shorter lifespan and more intensive maintenance needs. The overall cost of your window replacement will hinge on the particular materials, styles, and sizes you need. Simple double-hung windows deliver great value with their straightforward style and simple mechanisms, while new skylights cost more to prepare for and install. It's wise to consult a trusted installer to figure out your best options.

In this table, you can find cost data for the most common residential window types to determine how much you might pay.

Window Types Average 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

Materials also help determine a window's cost. You might select a material based on the local climate, your desired look, and your energy efficiency goals. For example, wood windows can give your home an organic design without breaking the bank, but you'll have to invest more toward maintenance. Aluminum and composite windows cost more up-front, but they're incredibly durable against the elements, so you'll spend far less on maintenance.

Window Types Average 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 labor costs, warranty fees, and permit fees. This will help you get a better picture of the overall expenses involved in the project.

Experience and Training

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

  • How many years it's been operating
  • Photo galleries of completed projects
  • Official non-government certifications attesting to its workmanship
The more experience a company has, the better its service and workmanship.

Licensing and Credentials

Missouri doesn't mandate window providers to get a state license. Instead, local authorities set their own credentialing standards. Consult with your city government to see what rules they have for contractors, and look for companies with trusted private accreditations in your own research. A few good places to start include credentials from the AWDI or FGIA.

Types of Windows Offered

There are numerous replacement window types you can choose from, and it's important to find a company that has expertise with the ones you want. Browse a company's website and reviews for any of these types:

  • Awning
  • Bay
  • Bow
  • Casement
  • Crank-out
  • Custom
  • Double- or single-hung
  • Egress
  • Garden
  • Jalousie
  • Picture
  • Sliding
  • Skylight
  • Specialty
  • Storm
  • Transom
  • Vent
Equally important to your desired windows' shape is their framing. Ask your window provider if it offers the frame material you want, such as aluminum, vinyl, composite, wood, or fiberglass.

Customer Feedback

Perhaps the best way to screen window companies for your job is to find out what previous customers have said about them. Read customer reviews on sites such as Trustpilot, Google, and Yelp. You can also view customer reviews and company ratings on the Better Business Bureau (BBB) website. Speak with people you know who have used a company you're interested in, and ask a representative for a copy of its reference list.


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Frequently Asked Questions About Window Replacement in O'Fallon

How could new windows help my energy efficiency?

In O'Fallon specifically, most homeowners using efficient windows cut their carbon emissions by 760 pounds annually. That amounts to $380 of annual savings.

The U.S. Department of Energy states that 25%–30% of a home's heating and cooling capacity is used to compensate for heat gain and heat loss through windows. By installing new, more efficient windows, you can improve your home's energy efficiency and lower your electricity bills.

Does window replacement involve pulling permits?

Window replacement may involve obtaining permits, based on your local building codes and regulations. Some communities mandate permits for window replacement projects in cases involving structural changes or alterations to the window openings. We recommend checking with your local building department or consult a professional before starting any window replacement work.

What repair services do window companies offer?

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

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