20 Best Window Companies in Mehlville, MO (2025 Reviews)

Thinking about upgrading your home's windows? We’ve got all the information you need in this guide to the top window installation companies.

We analyzed all the top-rated window companies in Mehlville and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 24, 2025

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

Whether you're doing home renovations or have windows that need repairs, windows play a vital role in conserving your home's electricity. When it’s the middle of summer, your old and drafty windows could be making your home more difficult to cool and costing you more in power bills.

Luckily, helping you save energy with more efficient windows also helps our goals of reducing energy usage for the environment.

Unlike other review sites, EcoWatch ranks window replacement companies on energy efficiency while also balancing cost, customer satisfaction and service area.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best Window Installation & Replacement Companies in Mehlville

The EcoWatch Reviews team evaluated dozens of providers that service the Mehlville area to find the top window installation companies by our standards. We assessed the companies based on energy-efficient offerings, price, local experience, coverage area, customer service and more.

Window World logo
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World has windows expertise in Mehlville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has over 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide.

Window World may be the company for you if you want one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Window World cost in Mehlville?

Window World does not mention prices on its website, but it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about the cost.

Renewal by Andersen logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Mehlville. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has over 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia.

Andersen may be the company for you if you want one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019. Not all of Andersen’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Mehlville?

Andersen does not mention prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can ask for a free quote on its website for more information about the cost.

Window Nation logo
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation has the best residential windows in Mehlville. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has over 16 years of experience in the windows industry, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states.

Window Nation may be the company for you if you want one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation. Not all of Window Nation’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.

How much does Window Nation cost in Mehlville?

Window Nation does not mention prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. You can ask for a free quote on its website for more information about the cost.

We’ve recommended installers with shining reputations, but bear in mind that these are national companies, so your service may depend on your local crew. We have tried to be unbiased and transparent by listing pros and cons for every company reviewed.

More Window Companies in Mehlville

Renewal by Andersen

Maryland Heights, MO
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Skylights
  • Service icon Glass Doors

Website: https://www.renewalbyandersen.com/window-company/733-st-louis-mo/about-us
Address: 2446 Schuetz Rd, Maryland Heights, MO 63043
Phone: (314) 983-9977

Champion Replacement Windows of St. Louis

Fenton, MO
4.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://www.championwindow.com/St-Louis/
Address: 29 Cassens Ct, Fenton, MO 63026
Phone: (636) 764-0470

Window Nation

Overland, MO
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Custom Window Designs
  • Service icon Vinyl Frames

Website: https://www.windownation.com/stlouis-showroom/
Address: 1913 Belt Way Dr, Overland, MO 63114
Phone: (314) 279-8249

Colonial Construction

St. Louis, MO
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.colonialstl.com/
Address: 10120 Fite Cir, St. Louis, MO 63123
Phone: (314) 725-6080

Building Envelope Experts

Fenton, MO
5.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows

Website: https://www.buildingenv.com/
Address: 1576 Fencorp Dr Suite 160, Fenton, MO 63026
Phone: (314) 310-7878

Chaney Windows And Doors

Maryland Heights, MO
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Vinyl Frames
  • Service icon Wood Frames
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: http://chaneywindowsanddoors.com/
Address: 80 Weldon Pkwy, Maryland Heights, MO 63043
Phone: (636) 699-6353

Gateway Door and Contracting

St Charles, MO
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: https://gatewaydoorstl.com/
Address: 3711 Mueller Rd, St Charles, MO 63301
Phone: (636) 577-1430

Windows Doors & More LLC

St Charles, MO
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: http://www.wdsmore.com/
Address: 3481 New Town Blvd, St Charles, MO 63301
Phone: (636) 724-5291

Home Comfort Exteriors

St Peters, MO
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options

Website: http://www.homecomfortexteriors.com/
Address: 7839 Mexico Rd, St Peters, MO 63376
Phone: (636) 928-8900

Cardinal Contractors

St. Louis, MO
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: https://cardinalcontractors.com/
Address: 453 N Lindbergh Blvd, St. Louis, MO 63141
Phone: (314) 266-4633

Quality Installation

Swansea, IL
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://www.qualityinstallation.net/
Address: 1108 N Belt W, Swansea, IL 62226
Phone: (888) 677-6838

STL Windows and Doors

Earth City, MO
4.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung

Website: https://stlwindowsanddoors.com/
Address: 4200 Shoreline Dr, Earth City, MO 63045
Phone: (314) 277-5952

Butler Home Improvement

Collinsville, IL
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.butlerhomeimprovement.com/
Address: 906 Vandalia St, Collinsville, IL 62234
Phone: (618) 344-7073

Gateway General Contractors

O'Fallon, MO
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.gatewaygeneralcontractorsllc.com/
Address: 9031 Veterans Memorial Pkwy, O'Fallon, MO 63366
Phone: (636) 515-5868

Mills Window & Door Showroom

Fenton, MO
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: http://www.millswindow.com/
Address: 1860 Fenpark Dr, Fenton, MO 63026
Phone: (314) 429-7000

Jacob Sunrooms, Exteriors & Baths

Fenton, MO
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Fiberglass Frames
  • Service icon Glass Showers
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options

Website: https://www.jacobsunroom.com/
Address: 1707 Gilsinn Ln, Fenton, MO 63026
Phone: (314) 241-3751

Glass Doctor of St. Charles, MO

St Charles, MO
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Glass Repair
  • Service icon Tempered Glass
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Custom Glass
  • Service icon Glass Doors
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://glassdoctor.com/st-charles-mo/
Address: 3910 Old Hwy 94 S Ste 105A, St Charles, MO 63304
Phone: (314) 962-4344

Jones Home Improvements

Cottleville, MO
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.joneshi.com/
Address: 5305 5th St, Cottleville, MO 63304
Phone: (636) 317-1977

L&D Wilson's Siding & Roofing Inc

Lebanon, IL
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung
  • Service icon Window Repair

Website: https://www.wilsonsidinginc.com/
Address: 502 S Fritz St, Lebanon, IL 62254
Phone: (618) 632-2389

Lyons Glass Company

Alton, IL
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Doors
  • Service icon Glass Repair
  • Service icon Window Replacement/Installation
  • Service icon Mirrors
  • Service icon Tempered Glass
  • Service icon Glass Showers

Website: http://www.lyonsglasscompany.com/
Address: 2400 Belle St, Alton, IL 62002
Phone: (618) 462-2731
Mehlville Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Mehlville, MO using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Mehlville Saves You Money

Upgrading to energy-efficient windows can improve the comfort of your home and help you save on energy bills. Here are more details about how switching out your windows could benefit you:

  • Save on power bills: Once you switch to energy-efficient windows, you can expect a reduction in your bills by about 12% since you’ll require less energy to heat or cool your house.
  • Reduce your carbon footprint: By using less energy after switching to energy-efficient windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
  • Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.

Estimated Cost of Window Replacement in Mehlville

When researching window installation, each company provides different services and prices. Let’s take a look at some average costs and services.

How Much Do New Windows Cost?

According to our market research, the typical cost of installing a single window is around $600. However, window installation costs can range from $200 to $1,200 for each window. These estimates vary based on specific characteristics of your installation, like material, type, the location of your home, size, number of windows and more.

With windows, efficiency is one of the most important factors for many homeowners. Windows with higher efficiency may cost more off the bat, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Mehlville homeowners $376+ each year after replacing single-pane windows.

Asking for free quotes from multiple companies is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

The first thing to ask yourself when considering a window replacement is: Do you need a full-frame installation or a pocket installation?

A full-frame installation is a replacement of the full window. It involves removing the old window, the sill, and the exterior and interior trim. It can also involve additional materials, including insulation and drip edges, which increase the total cost of the project. It’s also worth noting that you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations more simple and affordable. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.

Your window replacement company should be able to help you understand what’s best for your needs. In Mehlville, the decision will mostly be based on how old your windows are and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional examine your frames and window sills.

Advertisement

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Save 35% + $100 off per window!
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

How We Choose the Best Window Installers in Mehlville

In our search to find the most reliable, eco-friendly window installers in Mehlville, the EcoWatch team assessed dozens of companies before settling on these. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:

Service Area

Since this is a guide for Mehlville, we paid more attention to companies that provide services to the city. There are other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Mehlville.

Work Quality

When it comes to new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the type of window you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another very important review factor. If most customers don’t have good feedback about their service from a certain installer, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: as with other services, cheap window installers may not provide the most quality service. Still, we want to ensure we’re highlighting companies that provide a range of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed, windows are a considerable investment, so you’ll want to be certain that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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

Mehlville, MO Window Replacement FAQs

How much should a window install cost?

The typical cost of installing a window can range between $450 and $650. There are a variety of factors that affect how much it costs, including how energy-efficient the windows are, local labor costs, styles and sizes of windows, the materials used in designing the windows, your property’s location and the number of windows.

What kind of window is the most energy-efficient?

A window’s energy efficiency depends on a variety of factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are typically the most energy-efficient and are certified by the U.S. Department of Energy.

What services do window replacement companies offer?

Window installation professionals will do the entire process — from replacing your old windows with brand-new ones to cleaning up after the installation. In addition, some companies offer window manufacturing, customization and repairs.

What time of year is the best time to replace my windows?

Though you can install windows any time of year, warmer weather is usually better for installing replacement windows. Additionally, it shouldn’t be raining, as rain can make the installation more difficult.

Should I replace all my windows at once?

If your windows are greater than 20 years old, you most likely need to replace all of them. At that point, they are typically less efficient, leakier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.