27 Best Window Replacement Companies in Alton, IL (Jan 2023)
Window Companies Near Me

Are you thinking about upgrading your windows? Our list of the best window installation companies can help you pick the right one for you.

We analyzed all the top window installers in Alton and selected the top 27 based on:

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

By EcoWatch Local Advisors

Updated January 12, 2023

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.

A guide on the top window installation companies in Alton may not seem like the most interesting article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might realize. Traditional, outdated windows could lead to spending more on energy bills during the winter or summer months.

Thankfully, saving you money with efficient windows also helps our goals of conserving energy and the resources it takes to produce it.

As windows are so important for your home, choosing the best company for you is a big decision to make. That's why the EcoWatch team has curated this list of the best window installation companies, so you can more easily make an informed decision.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Manufactures products in-house
  • Great industry reputation
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Low prices relative to competitors
  • EnergyStar Partner
  • Quality of service will depend on your area

Best for Residential Windows

Window Nation

★★★★★
4

  • Manufactures products in-house
  • Custom designs
  • Wide variety of products and services
  • Limited service area

Best Window 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 passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

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 Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Great industry reputation
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen offers the best availability in Alton. Andersen has around 27 years of experience in the window installation industry. Many positive reviews from customers online back the provider's reputation.

It has established itself as a company 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 be sure to mention that you'd like Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Alton?

Andersen does not display 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. Getting a free quote on its website is the best way to get more accurate pricing information.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

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

Window World has windows expertise in Alton. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window installation sector. Its reputation is backed by several positive reviews from customers online.

It 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?

Prices aren't mentioned on Window World's 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 ask for 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 Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Limited service area

Window Nation has the best residential windows in Alton. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This provider has 16 years of experience in the window installation industry, and it has proved to be one of the most respected companies in Alton.

It has established itself as a company 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 caters to eco-conscious consumers by providing 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?

Pricing information is not available on Window Nation's website, as the cost of window replacement depends on how many and what type(s) of windows you need. However, 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. For more detailed information on the cost, you can request a 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. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This provider has 20 years of experience in the window installation industry, and it has become one of the most reputable companies in the business. Many positive reviews from customers online back the company's reputation.

Universal may be the company for you if you're interested in one that has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

There are a wide variety of window types available from Universal Windows Direct, some of which are Energy Star products. 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?

Prices aren't mentioned on Universal's 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. For more detailed information on the cost, you can get a quote from the company.

We've recommended installers with good reputations, but keep in mind some national companies have independently owned locations in Alton, 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 Replacement Companies in Alton

The Glass Guru

Wentzville, MO
5
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.theglassguru.com/ofallon-mo/
Address: 2182 E Pitman Ave, Wentzville, MO 63385
Phone: (636) 251-4018

Wildwood Roofing & Construction

Ellisville, MO
4.8
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Appointment Windows
  • Pros icon Locally Recognized for Quality

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Glass Showers
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.wildwoodroof.com/
Address: 437 Old State Rd, Ellisville, MO 63021
Phone: (636) 400-1011

Window World of St. Louis

Bridgeton, MO
4.0
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.windowworldstlouis.com/
Address: 13892 St Charles Rock Rd, Bridgeton, MO 63044
Phone: (314) 993-1800

Chaney Windows And Doors

Maryland Heights, MO
3.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Locally Recognized for Quality
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass
  • Service icon Bay Windows

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

Mr. Handyman of Metro East

Collinsville, IL
3.9
★★★★★
  • Pros icon Consistent Workmanship
  • Pros icon Helps Educate Customers
  • Pros icon Locally Recognized for Quality
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Double-Hung

Website: https://www.mrhandyman.com/metro-east/
Address: 1309 Vandalia St, Collinsville, IL 62234
Phone: (618) 319-7256

Renewal by Andersen of St. Louis

Maryland Heights, MO
3.8
★★★★★
  • Pros icon Charitable Giving
  • Pros icon Price Transparency
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.rbastl.com/
Address: 2446 Schuetz Rd, Maryland Heights, MO 63043
Phone: (314) 983-9977

Lowe's Home Improvement

Belleville, IL
3.8
★★★★★
  • Pros icon Reliable Appointment Windows
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.google.com/aclk
Address: Belleville, IL
Phone: (618) 239-3908

Empire Supply Co

St. Louis, MO
3.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Energy-Efficient Options
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://empiresupplystl.com/
Address: 7286 Manchester Rd, St. Louis, MO 63143
Phone: (314) 645-2633

Glass & More Inc. Low price glass repair!

Belleville, IL
3.7
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.jimsglassandmore.com/
Address: 5400 N Belt W, Belleville, IL 62226
Phone: (618) 222-1197

Energy View Windows - Home Improvements

Hazelwood, MO
3.7
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Locally Recognized for Quality
  • Pros icon Good Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Energy-Efficient Options
  • Service icon Architectural Glass

Website: http://www.energyviewhomeimprovements.com/
Address: 7220 N Lindbergh Blvd #350, Hazelwood, MO 63042
Phone: (314) 656-1437

Spectrum Glass & Tinting

O'Fallon, MO
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Consistent Workmanship
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Fast Delivery
  • Service icon Custom Window Designs
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.glassandwindows-mo.com/
Address: 955 W Terra Ln, O'Fallon, MO 63366
Phone: (636) 238-4315

All About Glass

Arnold, MO
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon Reliable Service

Services Offered

  • Service icon Residential Windows
  • Service icon Heavy Glass
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.allaboutglassstl.com/
Address: 1339 Jeffco Blvd, Arnold, MO 63010
Phone: (636) 461-2900

Masonry & Glass Systems Inc

St. Louis, MO
3.6
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Award-Winning
  • Pros icon Consistent Workmanship
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.masonryglass.com/
Address: 1503 S Kingshighway Blvd, St. Louis, MO 63110
Phone: (314) 535-6515

Window Nation

Overland, MO
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Locally Recognized for Quality
  • Pros icon Educational Website

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

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

Sears Window Replacement

Bridgeton, MO
3.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Consistent Workmanship
  • Pros icon Award-Winning
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.searshomeservices.com/locations/hi/window-replacement/mo/bridgeton
Address: 12930 Hollenberg Dr, Bridgeton, MO 63044
Phone: (314) 325-8649

STL Windows and Doors

St. Louis, MO
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free Quotes
  • Pros icon Good Customer Service
  • Pros icon Dependable Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://stlwindowsanddoors.com/
Address: 12150 Lackland Rd, St. Louis, MO 63146
Phone: (314) 277-5952

Building Envelope Experts

Fenton, MO
3.6
★★★★★
  • Pros icon Reliable Service
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

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

Missouri Glass Company

St. Louis, MO
3.4
★★★★★
  • Pros icon Dependable Service
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Heavy Glass
  • Service icon Tempered Glass
  • Service icon Custom Window Designs
  • Service icon Business Windows

Website: http://www.missouriglass.com/
Address: 1717 Ohio Ave, St. Louis, MO 63104
Phone: (314) 664-5100

Clear Window Technology

Ballwin, MO
3.4
★★★★★
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service
  • Pros icon Award-Winning
  • Pros icon Price Transparency

Services Offered

  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung
  • Service icon Bay & Bow Windows

Website: http://www.clearwindowtech.com/
Address: 15009 Manchester Rd #267, Ballwin, MO 63011
Phone: (314) 966-2666

Lakeside Renovation & Design

Chesterfield, MO
3.4
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon Award-Winning

Services Offered

  • Service icon Custom Window Designs
  • Service icon Full-Service Installations

Website: https://lakesiderenovationanddesign.com/
Address: 139 Chesterfield Industrial Blvd, Chesterfield, MO 63005
Phone: (636) 978-5000

Alenco Inc.

Fenton, MO
3.3
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Appointment Windows
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Windows
  • Service icon Glass Showers
  • Service icon Sliding Glass

Website: https://www.alenconline.com/remodelers-st-louis/
Address: 5 Cassens Ct, Fenton, MO 63026
Phone: (314) 480-6264

Banner Construction

St. Louis, MO
3.3
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Consistent Workmanship
  • Pros icon No-fee Quotes
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Double-Hung

Website: https://bannerconstruction.com/
Address: 1177 N Price Rd, St. Louis, MO 63132
Phone: (314) 310-1133

Jacob Sunrooms, Exteriors & Baths

Fairview Heights, IL
3.3
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Reliable Appointment Windows
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.google.com/aclk
Address: Fairview Heights, IL
Phone: (618) 397-4391

Winco Window Company

St. Louis, MO
3.2
★★★★★
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.wincowindow.com/
Address: 6200 Maple Ave, St. Louis, MO 63130
Phone: (314) 725-8088

Millstadt Glass Inc

Millstadt, IL
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Fast Delivery
  • Service icon Tempered Glass
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Sliding Glass

Website: https://millstadtglass.com/
Address: 307 S Breese St, Millstadt, IL 62260
Phone: (618) 476-9969

Metropolitan Glass

Florissant, MO
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon Helps Educate Customers
  • Pros icon Reliable Service

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Tempered Glass
  • Service icon Sliding Glass

Website: http://www.stlmetroglass.com/
Address: 1960 N Hwy 67, Florissant, MO 63033
Phone: (314) 837-9615

A Pane In The Glass

St Charles, MO
3.2
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Helps Educate Customers
  • Pros icon Good Customer Service
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: https://apaneintheglassllc.com/
Address: 1224 Harvestowne Ind Dr, St Charles, MO 63304
Phone: (636) 561-0474

How Installing Energy-Efficient Windows in Alton Saves You Money

There are quite a few benefits of switching to energy-efficient windows. Some reasons you may want to consider making the switch include the following:

  • Save on energy bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of household energy use. Installing energy-efficient windows can help reduce that amount, which helps you save more on your bills.
  • Reduce your carbon footprint: In Alton, you can reduce your indirect greenhouse gas emissions by about 642 pounds per year after you install energy-efficient windows.
  • Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.

Estimated Cost of Window Replacement in Alton

Let's take a look at the cost of replacing your windows and the kinds of services offered by installers.

How Much Do New Windows Cost?

The typical cost to install a single window is about $600 but can range from $200 to $1,200. These amounts vary based on the specifics of your installation, like material, the location of your home, size, number of windows, type and more.

Whether or not you opt for energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $307 a year on your energy bills in Alton.

The cost of your window installation will also vary depending on the kind of window material you choose for the frames. Wood windows are generally the most expensive, but it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.

What Services do Window Installers Offer?

The first step when planning a replacement is to figure out whether you need a full-frame or pocket installation.

Full-frame installations entail replacing the total window, including the sill, frame and trim. Full-frame installations are necessary when you want a new style or your window has significant damage. Because full-frame installations are more involved, they will raise the total cost. A pocket installation means replacing a window without taking out the complete frame, which is usually cheaper than a full-frame installation.

If you're unsure which kind of window installation service you should get, your installer can advise you. Generally, the choice is influenced by factors such as the age and condition of the home, the type of building material, budget and time restrictions.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Award-winning company
  • Manufactures products in-house
  • Great industry reputation
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Lifetime warranty
  • Low prices relative to competitors
  • EnergyStar Partner
  • Quality of service will depend on your area

Best for Residential Windows

Window Nation

★★★★★
4

  • Manufactures products in-house
  • Custom designs
  • Wide variety of products and services
  • Limited service area

How We Choose the Best Window Installers in Alton

The EcoWatch Reviews team is different from other reviewers since we assess these companies through a sustainability lens. We've decided to review the top window installation companies in Alton primarily based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows have been shown to cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

This one is self-explanatory, but we've chosen to highlight window installation companies that serve Alton so you can find a quality window installation company near you.

Work Quality

When picking new windows, the quality and breadth of services can often play just as important of a role in overall efficiency and performance as the brand of window you opt for. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

Customer Reviews

We analyzed patterns in recent customer feedback to determine the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including professionalism, quality of parts, quality of installation, warranty, cost and more.

Cost

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

Warranty

Protecting your investment in new windows is important. That's why window installation companies that offer 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 installers that have more 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 does window installation cost?

The typical cost of installing one window ranges between $450 and $650. There are several factors that influence the cost, which include styles and sizes of windows, the materials used in designing the windows, how energy-efficient the windows are, the number of windows, local labor costs and your property's location.

What type of window is the best for energy efficiency?

A window's energy efficiency is affected by a variety of factors, including the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.

When should I use a window installation company?

Unless you have home repair skills and have the time needed to replace your own windows, we recommend hiring the pros. The process of installing windows is complex and can take anywhere from four to six hours for a single window. Although it's tempting to try to save some money by doing it yourself, hiring a professional is a faster, more efficient and safer alternative.

When is the best time of year to replace windows?

Replacement windows can be installed any time of the year, but autumn might be the best season. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into your home, so the temperature outside isn't necessarily a big factor. Most importantly, the weather should be dry.

How often do you need to replace windows?

Windows generally last around 20 to 30 years, but anytime you notice damage on your windows, it's a good time to have them looked at by an expert to determine if they are in need of a repair or replacement.

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