8 Best Window Companies in Mount Vernon, IL (2025 Reviews)

If you’re thinking of upgrading to new windows, our guide to the best window installation companies can help.

We analyzed all the top-rated window companies in Mount Vernon and selected the best 8 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.

A guide on the best window installation companies in Mount Vernon may not seem like the most compelling article on EcoWatch, but trust us, windows impact your life more than you might think. Traditional or damaged windows can cost you in power bills. In fact, the Department of Energy estimates that 25-30% of your house’s heat or cool air could be lost through your windows.

Installing upgraded, efficient windows on your house can help you save money every month on your energy bills — and you can help the environment, too.

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

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Power Home

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

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Energy-Efficient Features

DaBella

★★★★★
4.0
  • Great warranty
  • Friendly sales representatives
  • Offers good financing options

Best Window Installation & Replacement Companies in Mount Vernon

The EcoWatch team evaluated dozens of providers that serve the Mount Vernon area to find the top window installation companies that fit our standards. We assessed the companies on their energy-efficient offerings, price, customer service, coverage area, local experience 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 offers windows expertise in Mount Vernon. 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 windows industry, and it currently provides services to 200 locations nationwide. The company has plenty of glowing reviews from customers online.

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

Although pricing information is not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. For more detailed information on the cost, you can request a quote from the company.

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 offers the best availability in Mount Vernon. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia. The company has plenty of glowing reviews from customers online.

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

Renewal by Andersen caters to eco-conscious consumers by providing 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 Mount Vernon?

Although pricing information is not readily available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on the cost, you can request a quote from the company.

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 offers the best residential windows in Mount Vernon. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has around 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. The company has plenty of glowing reviews from customers online.

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 Mount Vernon?

Although pricing information is not readily available on Window Nation’s website, 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.

We strive to stay unbiased and transparent by including pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.

More Window Companies in Mount Vernon

A-1 Quality Glass Inc

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Repair
  • Service icon Screen Repair
  • Service icon Storm/Impact Windows
  • Service icon Mirrors
  • Service icon Energy-Efficient Options

Website: https://www.a1qualityglass.net/
Address: 1112 E Main St, Olney, IL 62450
Phone: (618) 395-4930

Quality Installation

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

Services Offered

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

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

L&D Wilson's Siding & Roofing Inc

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

Services Offered

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

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

Glass Doctor of Harrisburg, IL

Harrisburg, IL
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

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

Website: https://glassdoctor.com/harrisburg-il
Address: 714 S Commercial St, Harrisburg, IL 62946
Phone: (618) 252-6917

Glass Doctor of Mount Vernon

Mt Vernon, IL
4.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

Website: https://glassdoctor.com/mt-vernon
Address: 1800 S 10th St, Mt Vernon, IL 62864
Phone: (618) 244-2708

Glass Doctor of Carterville

Carterville, IL
4.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

Website: https://glassdoctor.com/carterville
Address: 7301 Cox Dr, Carterville, IL 62918
Phone: (618) 997-1233

Windoor - Unlimited

Troy, IL
3.4
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

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

Website: http://www.windoor-unlimited.com/
Address: 200 Collinsville Rd, Troy, IL 62294
Phone: (618) 505-7502

Superior Window Company

Centralia, IL
3.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: http://superiorwindowsandsiding.com/
Address: 1420 N Elm St, Centralia, IL 62801
Phone: (618) 533-6349
Mount Vernon Window Cost Calculator

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

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

  • Save on electricity bills: The Department of Energy estimates that heat gained or lost through windows makes up around 25-30% of energy use in your home. Installing energy-efficient windows can help decrease that amount, which helps you save $302 a year on your bills.
  • 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 fading of your furniture, carpet and other valuables.
  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
  • 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.

Estimated Cost of Window Replacement in Mount Vernon

Let’s take a look at the cost of installing new windows and the types of services you may need for your home.

How Much Do New Windows Cost?

Though the average cost of installing one window is about $600, it can range anywhere from $200 to $1,200. But prices vary remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door installations and replacements, which will add extra costs to your project.

Whether or not you want energy-efficient windows is another factor that will affect the cost. These will usually cost more than other windows, but on the other hand, you can save about $302 a year on your energy bills in Mount Vernon.

We advise getting free quotes from several window companies to find the one that works best for you.

What Services do Window Installers Offer?

There are typically two kinds of window replacement services: full-frame and pocket installations.

Full-frame installations are usually done when you want to change the style of your windows or your window has a lot of rot. With this service, your installers will replace the entire window, including the frame, trim and sill. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations take less time and therefore cost less. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.

Your window installation company will be able to help you understand what’s best for your needs. In Mount Vernon, 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 check on your frames and window sills.

Advertisement

Power Home

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

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Energy-Efficient Features

DaBella

★★★★★
4.0
  • Great warranty
  • Friendly sales representatives
  • Offers good financing options

How We Choose the Best Window Installers in Mount Vernon

EcoWatch reviews are different from other reviews, as we’re examining these companies through a sustainability lens. We’ve assessed the top window installation companies in Mount Vernon mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to cut your energy 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 installers that serve a wide variety of states and cities so you can find a quality window installation company near you.

Work Quality

We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each installer included on this list to ensure its contractors are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent online reviews to find the companies with the most consistent customer satisfaction. Customer satisfaction might be the factor we place the most value on, 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: similar to other services, cheap window companies are not going to provide the highest quality service. On the other hand, we want to ensure we’re highlighting companies that offer a variety 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 with lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

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

Mount Vernon, IL Window Replacement FAQs

How much does a window install cost?

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

What are the kinds of windows?

There are several different kinds of windows you can get for your home, such as slider windows, casement windows, double-hung and single-hung windows, transom windows, picture windows, awning windows and bay windows.

When should I use a window installation company?

Unless you have home repair skills and have the time to replace your own windows, we recommend hiring a professional. The window installation process is complicated and can take anywhere from four to six hours for a single window. Although it’s tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and much safer alternative.

How long does it usually take to install windows?

Since the average installation time of a window is 30 minutes, about 16 windows can be installed in a typical 8-hour work day.