20 Best Window Companies in Alton, IL (2024 Reviews)

Are you looking to replace your windows? Our guide to the best window installation companies can help you choose the right one for you.

We analyzed all the top-rated window companies in Alton 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 February 01, 2024

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 updating for aesthetics or have damaged windows, windows play a key role in conserving your home's energy. If your house has old or damaged windows, your HVAC system could be working extra hard to heat or cool your home. This means higher power bills.

Replacement windows improve your home’s insulation, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.

Efficient windows are especially important in Alton, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $313 per year.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Alton

The EcoWatch Reviews team examined dozens of installers in Alton to find the best window installation companies for our readers. The providers in this article scored best in our categories, including energy-efficient offerings, price, customer service, availability and more.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
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 offers the best availability in Alton. Andersen has about 27 years of industry experience, and it currently serves nearly every state except Mississippi and West Virginia.

You may want to consider opting for Andersen if you're interested in a installer 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

Renewal by Andersen’s commitment to sustainability can be seen in its energy-efficient window offerings. 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.

How much does Renewal by Andersen cost in Alton?

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. The best way to get more accurate information is to get a free quote from the company.

Window World logo
FAST QUOTE
as little as 30 seconds
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 offers windows expertise in Alton. Window World has about 27 years of industry experience, and it currently serves 200 locations nationwide.

You may want to consider opting for Window World if you're interested in a installer 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

Window World’s commitment to sustainability can be seen in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Alton?

Window World does not mention prices on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate information is to get a free quote from the company.

Window Nation logo
FAST QUOTE
as little as 30 seconds
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 offers the best residential windows in Alton. Window Nation has about 16 years of industry experience, and it currently serves residents within 75 miles of its showrooms, which are in 13 states.

You may want to consider opting for Window Nation if you're interested in a installer 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

Window Nation’s commitment to sustainability can be seen in its energy-efficient window offerings. 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.

How much does Window Nation cost in Alton?

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. The best way to get more accurate information is to get a free quote from the company.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct offers the best warranty in Alton. Universal has about 20 years of industry experience, and it currently serves 27 states nationwide.

You may want to consider opting for Universal if you're interested in a installer that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct’s commitment to sustainability can be seen in its energy-efficient window offerings. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Alton?

Universal does not mention prices on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to get more accurate information is to get a free quote from the company.

We’ve recommended companies with good reputations, but note that some national companies have independently owned locations in Alton, so the quality of service may differ depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for every company we reviewed.

More Window Companies in Alton

Renewal by Andersen

Maryland Heights, MO
4.6
★★★★★
  • 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 Skylights
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Sliding Glass Doors
  • Service icon Commercial Windows
  • Service icon Andersen
  • Service icon Bay Windows

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

Window World of St. Louis

Earth City, MO
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

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

Website: https://www.windowworldstlouis.com/
Address: 3600 Rider Trail S, Earth City, MO 63045
Phone: (314) 993-1800

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

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

Window Nation

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

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options

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

Lyons Glass Company

Alton, IL
4.8
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Window Repair
  • Service icon Mirrors

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

H&F Exteriors

Glen Carbon, IL
4.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Window Install & Replacement

Website: https://hfexteriors.com/edwardsville-location/
Address: 3 Jct Dr W, Glen Carbon, IL 62034
Phone: (618) 223-5590

Penny Window

St. Louis, MO
3.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Window Install & Replacement
  • Service icon Storm Windows

Website: https://pennywindowstl.com/
Address: 9910 Halls Ferry Road, St. Louis, MO 63136
Phone: (314) 867-4355

Just windows and Doors

Florissant, MO
3.1
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement

Website: http://justwindowsanddoors.org/
Address: 4128 Seven Hills Dr, Florissant, MO 63033
Phone: (314) 458-0605

Butler Home Improvement

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

Services Offered

  • Service icon Window Install & Replacement

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

Morse Home Improvement

Alton, IL
2.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Aluminum Frames
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Simonton

Website: https://mhi1962.com/
Address: 2320 Morning Star Dr, Alton, IL 62002
Phone: (618) 465-0505

STL Windows and Doors

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

Services Offered

  • Service icon Storm Doors
  • Service icon Window Install & Replacement
  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Sliding Glass Doors
  • Service icon Fiberglass Frames

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

Gateway Door and Contracting

St Charles, MO
5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Commercial Windows
  • Service icon Window Repair

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

Home Services at The Home Depot

St. Louis, MO
2.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Window Repair
  • Service icon Glass Showers
  • Service icon Window Install & Replacement

Website: https://www.homedepot.com/l/Ferguson/MO/Saint-Louis/63136/3013/services
Address: 10930 New Halls Ferry Road, St. Louis, MO 63136
Phone: (314) 279-3874

Mad City Windows & Baths

St Charles, MO
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass Doors
  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

Website: https://www.madcitywindows.com/missouri/
Address: 959 Harmsted Court, St Charles, MO 63301
Phone: (314) 396-6394

Windows Doors & More LLC

St Charles, MO
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Install & Replacement

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

Chaney Windows And Doors

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

Services Offered

  • Service icon Vinyl Frames
  • Service icon Wood Frames
  • Service icon Stained Glass
  • Service icon Energy-Efficient Options
  • Service icon Storm Doors
  • Service icon Fiberglass Frames
  • Service icon Window Install & Replacement
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Glass Doors

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

Energy View Home Improvements

Hazelwood, MO
3.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Bay Windows

Website: http://www.energyviewhomeimprovements.com/
Address: 7220 N Lindbergh Blvd #350, Hazelwood, MO 63042
Phone: (314) 598-2969

Genesco Window Products

Maryland Heights, MO
4.6
★★★★★

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Andersen
  • Service icon Window Repair
  • Service icon Mirrors

Website: http://www.genescowindowproducts.com/
Address: 2456 Adie Rd, Maryland Heights, MO 63043
Phone: (314) 567-9175

Cardinal Contractors

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

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Window Repair

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

Green Tree Home Solutions

Edwardsville, IL
2.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Pella
  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Window Repair

Website: https://greentreehomesolutions.com/
Address: 6 Schwarz Street Plaza, Edwardsville, IL 62025
Phone: (618) 767-6430
Alton Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Alton, IL 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 Alton Saves You Money

When you switch to energy-efficient windows, you may see several benefits, including:

  • Save on power bills: Switching to energy-efficient windows reduces your energy bills by about 12% since you use less energy.
  • Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, particularly if you have an older home.
  • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
  • Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Alton

Each window installer provides varying services and has different price points depending on a few factors.

How Much Do New Windows Cost?

The average cost to replace one window is about $600 but can range anywhere from $200 to $1,200. But costs vary considerably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window installers also offer door installations, which will add extra costs to your project.

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 — especially during the summer and winter — they can give you many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Alton homeowners $313+ a year after replacing single-pane windows.

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

What Services do Window Installers Offer?

There are generally two types of window installation services: full-frame and pocket installations.

A full-frame installation replaces the entire window, including the sill, frame, trim and the window panes. As this type of installation is more involved, it will cost more than a pocket installation. Pocket installations (or retrofits) involve replacing a window within the existing frame, which makes pocket installations more simple and affordable. But, if the frame has any damage or rot, you will most likely need a full-frame installation instead.

Your window installation company should be able to help you choose which type of installation you need.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Alton

EcoWatch differs from most reviewers because we evaluate these companies through a sustainability lens. We’ve reviewed the best window replacement companies in Alton mostly based on energy efficiency, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve the Alton area so you can find the right window installation company near you.

Work Quality

When picking new windows, the quality and range of services often plays just as important of a role in overall efficiency and performance as the brand of window you opt for. We do rate window installers higher 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 things to say about their experience with a certain company, it won’t be featured on EcoWatch.

Cost

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

Warranty

Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Last but not least, we like to see companies that have been in the industry for quite some time. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Alton, IL Window Replacement FAQs

How much should window installation cost?

The national average cost of installing a single window is around $600 but can range between $200 and $1,200, based on several factors. The price is often influenced by the type and material of the window, the location of your property and the size of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

Which kind of window is the best?

Generally, double-pane windows are more efficient than single-pane windows and windows that do not open will be more efficient than windows that do. If you want to be sure you’re getting the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.

Can I replace my own windows?

If you’re handy and have experience with similar home improvement projects, it’s possible to install your own windows. However, if you don’t have the time or experience, we recommend getting a professional to do it for you.

Should I replace my windows all at the same time?

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

How long does window installation typically take?

Each window takes about 30 minutes to install based on the kind of window. However, the window installation can take two days or more if you have a lot of windows that must be installed.

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