20 Best Window Companies in Merrillville, IN (2025 Reviews)
If you’re looking to get new windows, our guide to the top window installation companies can help.
We analyzed all the top-rated window companies in Merrillville and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Whether you're updating for style or have damaged windows, windows play a vital role in conserving your home's electricity. If your house has old or damaged windows, your HVAC system could be working overtime to heat or cool your home. This means higher energy bills.
Luckily, helping you save money with more efficient windows also helps our goals of reducing energy usage for the environment.
Unlike other review sites, EcoWatch ranks window installation companies based on energy efficiency while also balancing cost, customer satisfaction and service area.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Merrillville
The EcoWatch team evaluated dozens of companies that service the Merrillville area to find the best window installation companies that fit our standards. The providers mentioned in this article scored best in our categories, including energy-efficient offerings, customer service, price, availability and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World provides windows expertise in Merrillville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been in business since 1995 and 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 WindowsWindow World’s commitment to sustainability shows 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 Merrillville?Prices aren’t listed on Window World’s website, but it's known for offering some of the most affordable window installations around. For more accurate information on pricing, you can request a quote from the company.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen provides the best availability in Merrillville. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and 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 WindowsRenewal by Andersen’s commitment to sustainability shows 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 Merrillville?Prices aren’t listed on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more accurate information on pricing, you can request a quote from the company.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation provides the best residential windows in Merrillville. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has been in business since 2006 and 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 WindowsWindow Nation’s commitment to sustainability shows 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 Merrillville?Prices aren’t listed on Window Nation’s 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. For more accurate information on pricing, you can request a quote from the company.
We aim to be unbiased and transparent by describing pros and cons for every installer. Additionally, any partnerships do not affect our rankings.
More Window Companies in Merrillville
Renewal by Andersen of Chicago
Lockport, ILEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Skylights
Window Replacement/Installation
Custom Window Designs
Double-Hung
Bay Windows
Glass Doors
Champion Replacement Windows of South Bend
South Bend, INGood Customer Service
Free assessment
Price Transparency
Services Offered
Bay Windows
Double-Hung
Glass Doors
Window Replacement/Installation
Power Home Remodeling
Chicago, ILGood Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Romeoville, ILEducational Website
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Double-Hung
Custom Window Designs
Vinyl Frames
Bay Windows
AT Construction, Inc.
Orland Park, ILPrice Transparency
Good Customer Service
Timely Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Chicago Window Repair & Replacement Company
Chicago, ILGood Customer Service
Timely Service
Free assessment
Services Offered
Window Repair
Bay Windows
Glass Repair
Window Replacement/Installation
Wood Frames
Storm/Impact Windows
Glass Doors
Energy-Efficient Options
Metal Frames
Vinyl Frames
Pegasus windows Inc.
Westchester, ILGood Customer Service
Free assessment
Price Transparency
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Glass Doors
WINBUZZ Windows Replacement
Downers Grove, ILGood Customer Service
Free assessment
Services Offered
Glass Doors
Bay Windows
Double-Hung
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
FRST Windows Replacement & Installation
Chicago, ILServices Offered
Window Replacement/Installation
Royal Craft Home Remodelers Inc.
Downers Grove, ILGood Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Real Exteriors
Schiller Park, ILPrice Transparency
Free assessment
Educational Website
Timely Service
Good Customer Service
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Rite Way Glass & Mirror
Woodridge, ILPrice Transparency
Educational Website
Timely Service
Good Customer Service
Free assessment
Services Offered
Screen Repair
Window Replacement/Installation
Window Repair
Tempered Glass
Glass Showers
Mirrors
Energy-Efficient Options
Glass Doors
Northwind Exteriors
Park Ridge, ILFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Durabuilt Home Improvements, Inc.
Elmhurst, ILPrice Transparency
Good Customer Service
Services Offered
Double-Hung
Wood Frames
Window Replacement/Installation
Glass Doors
Bay Windows
Vinyl Frames
New Edg Window Replacement
Naperville, ILServices Offered
Window Replacement/Installation
Window Repair
EV Windows & Doors, Inc.
Des Plaines, ILGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Metal Frames
Window Replacement/Installation
Vinyl Frames
Wood Frames
Glass Doors
Fiberglass Frames
Double-Hung
Two Panes Glazing, LLC
Wheaton, ILGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Glass Doors
Window Repair
Window Replacement/Installation
BUZ Windows Replacement & Installation
Carol Stream, ILFree assessment
Services Offered
Window Replacement/Installation
Glass Doors
Double-Hung
Energy-Efficient Options
Bay Windows
Royalty Windows
Glenview, ILEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Vinyl Frames
Window Replacement/Installation
Bay Windows
Double-Hung
Custom Window Designs
FST Window Replacement & Installation
Glenview, ILEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Merrillville, IN using our customized window cost calculator.
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 Merrillville Saves You Money
By switching to energy-efficient windows, you and your family can take advantage of several benefits, including:
- Protect your investment: If you have a relatively old home, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help increase the value of your house if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
- Save money on electricity bills: Because energy-efficient windows decrease the amount of energy used to heat or cool your home, they can help you save about $391 annually on your energy bills in Merrillville.
- Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can lower your carbon footprint by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Merrillville
When researching window installation, each company provides different services and costs. Let’s go over some average costs and services.
How Much Do New Windows Cost?
The national average cost to install one window is about $600 but can range from $200 to $1,200. But prices vary remarkably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations and replacements, which will add extra costs to your project.
It’s important to bear in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in Energy Star certified windows can save Merrillville homeowners $391+ a year when replacing single-pane windows.
We advise requesting free quotes from several window companies to find the one that works best for you.
What Services do Window Installers Offer?
The first question to ask yourself when planning to replace your windows is: Do you need a full-frame installation or a pocket installation?
A full-frame installation is a total window replacement. This service involves removing the old window, the sill, and the exterior and interior trim. It can also involve other materials, including insulation and drip edges, which raise the total cost of the project. It’s also worth noting that you may have to touch up the paint around the window after a full-frame installation. A pocket installation entails replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.
Your window installation company will be able to help you choose what’s best for your needs. In Merrillville, the decision will mostly depend on the age of your windows and if there’s any damage. Wood can decay if not properly maintained over the years, so it’s a good idea to have a professional examine your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Merrillville
EcoWatch reviews differ from other reviews since we evaluate these companies through a sustainability lens. We have evaluated the best window installers in Merrillville mostly based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient 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 pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve Merrillville so you can find a quality window installation company near you.
Work Quality
When it comes to 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 you choose. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If the majority of customers don’t have nice things to say about their experience with a certain company, you won’t see it featured on EcoWatch.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing providers’ prices, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
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 installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Merrillville, IN Window Replacement FAQs
How much does window installation cost?
The average cost of installing a single window ranges between $450 and $650. There are many factors that affect the cost, such as styles and sizes of windows, your property’s location, the materials used in designing the windows, how energy-efficient the windows are, the number of windows and local labor costs.
What are the most common types of replacement windows?
The most common kinds of windows for homes are double-hung and single-hung windows, awning windows, slider windows, transom windows, bay windows, picture windows and casement windows.
When do I have to use a window installation company?
Unless you’re handy and have all the necessary tools to replace your own windows, we recommend hiring the pros. The process of installing windows is quite involved 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 safer alternative.
Should I replace my windows all at once?
If your windows are greater than 20 years old, you probably need to replace all of them. At that point, they are typically less efficient, draftier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.