20 Best Window Companies in Ottawa, IL (2025 Reviews)
Are you looking to upgrade 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 Ottawa 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 aesthetics or have windows that need repairs, windows play a key role in conserving your home's energy. During the winter months, the last thing you want is your heat to leak out of your outdated windows.
That’s also bad for the environment because the additional energy used by old windows increases your carbon footprint.
So if you’re building a new home, renovating or changing out old windows in Ottawa, this is the best place to get started.
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 Ottawa
The EcoWatch team evaluated dozens of companies that serve the Ottawa area to find the best window installation companies that fit our standards. We assessed the providers on their energy-efficient offerings, local experience, customer service, coverage area, price 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 Ottawa. This company has 27 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Ottawa.
Window World may be the company for you if you're looking for 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 is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.
How much does Window World cost in Ottawa?Although pricing is not available on Window World’s website, it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about pricing.

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 Ottawa. This company has 27 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Ottawa.
Andersen may be the company for you if you're looking for 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 is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Ottawa?Although pricing is not 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. You can inquire about a free quote on its website for more information about pricing.

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 Ottawa. This company has 16 years of experience in the window installation industry, and it has established itself as one of the most reputable companies in Ottawa.
Window Nation may be the company for you if you're looking for 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 is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window Nation representative when inquiring about services.
How much does Window Nation cost in Ottawa?Although pricing is not 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. You can inquire about a free quote on its website for more information about pricing.
We’ve recommended companies with good reputations, but note that some national companies have independently owned locations in Ottawa, so the quality of service may vary depending on your local crew. We have tried to remain unbiased and transparent by including pros and cons for every company reviewed.
More Window Companies in Ottawa
Renewal by Andersen of Chicago
Lockport, ILEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Skylights
Custom Window Designs
Double-Hung
Glass Doors
Window Replacement/Installation
Bay Windows
Window Nation
Romeoville, ILEducational Website
Services Offered
Energy-Efficient Options
Vinyl Frames
Custom Window Designs
Glass Doors
Bay Windows
Window Replacement/Installation
Double-Hung
Schmidt Exteriors, Inc.
Aurora, ILGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Vinyl Frames
Window Replacement/Installation
Bay Windows
Energy-Efficient Options
Glass Doors
Custom Window Designs
NextWave Construction Windows, Siding, & Doors
Maple Park, ILPrice Transparency
Good Customer Service
Free assessment
Timely Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
ACE Roofing Contractors & Roof Replacement
St. Charles, ILFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
EXTERIORS Windows & Siding Installers
St. Charles, ILFree assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
New Edg Window Replacement
Naperville, ILServices Offered
Window Repair
Window Replacement/Installation
Rite Way Glass & Mirror
Woodridge, ILPrice Transparency
Good Customer Service
Timely Service
Free assessment
Educational Website
Services Offered
Screen Repair
Mirrors
Glass Doors
Energy-Efficient Options
Glass Showers
Window Replacement/Installation
Tempered Glass
Window Repair
AT Construction, Inc.
Orland Park, ILGood Customer Service
Price Transparency
Educational Website
Free assessment
Timely Service
Services Offered
Window Replacement/Installation
Two Panes Glazing, LLC
Wheaton, ILGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
Glass Doors
Energy-Efficient Options
Royal Craft Home Remodelers Inc.
Downers Grove, ILFree assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
WINBUZZ Windows Replacement
Downers Grove, ILGood Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Bay Windows
Vinyl Frames
Double-Hung
Energy-Efficient Options
BUZ Windows Replacement & Installation
Carol Stream, ILFree assessment
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Glass Doors
Great Outlook Glass
Dundee Township, ILFree assessment
Services Offered
Glass Doors
Glass Repair
Glass Showers
Window Replacement/Installation
Mirrors
The Well Dressed Window
Normal, ILGood Customer Service
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Custom Window Designs
Chicago Windows Solutions
Schaumburg, ILPrice Transparency
Free assessment
Timely Service
Services Offered
Glass Doors
Window Replacement/Installation
Vinyl Frames
Bay Windows
Double-Hung
WarmDreams Windows & Doors
East Dundee, ILGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Double-Hung
Energy-Efficient Options
Custom Window Designs
Window Replacement/Installation
Bay Windows
Glass Doors
Durabuilt Home Improvements, Inc.
Elmhurst, ILPrice Transparency
Good Customer Service
Services Offered
Double-Hung
Glass Doors
Vinyl Frames
Wood Frames
Bay Windows
Window Replacement/Installation
Pegasus windows Inc.
Westchester, ILFree assessment
Price Transparency
Good Customer Service
Services Offered
Bay Windows
Glass Doors
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Hoffman Window Replacement Company
Hoffman Estates, ILFree assessment
Good Customer Service
Timely Service
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Ottawa, IL 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 Ottawa Saves You Money
Switching to energy-efficient windows can help improve the comfort of your home and help you save on energy bills. Here are more details about how upgrading your windows could help you:
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help reduce damage from the sun's UV rays to your floors, carpets and furniture.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, especially if you have an older home.
- Reduce your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Ottawa, that’s about 642 pounds per year on average.
- Save on energy bills: After you switch to energy-efficient windows, you can expect a reduction in your bills by about 12% since you’ll use less energy to heat or cool your house.
Estimated Cost of Window Replacement in Ottawa
Let’s take a look at the cost of window replacement and the types of services you may need for your home.
How Much Do New Windows Cost?
Even though the average cost to replace one window is around $600, it can range anywhere from $200 to $1,200. How much it will cost is based on several factors, such as number of windows, type, material, the location of your home, size and more.
It’s also worth noting that energy-efficient windows will typically cost more initially, but Energy Star predicts that upgrading the windows on your Ottawa home translates to an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. The amount of money you’ll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
How much your window installation costs will also vary depending on the type of window material you choose for the frames. Wood windows are typically the most expensive, although it depends on whether they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
In regard to window installations, there are generally two kinds that your installer will have: full-frame and pocket installations.
Full-frame installations involve replacing the complete window, including the trim, frame and sill. You most likely need a full-frame installation when you want to change the style of your windows or your window has considerable rot or deterioration. Because these installations are more involved, they will raise the total cost. A pocket installation means replacing a window without removing the complete frame, which is generally cheaper than a full-frame installation.
Your window installer can help you choose which type of installation you need.
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 Ottawa
EcoWatch reviews are different from most reviews because we look at these companies through a sustainability lens. We’ve decided to assess the top window replacement companies in Ottawa 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 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 installers that serve Ottawa so you can find the best window installation company near you.
Work Quality
We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each company featured on this list to ensure its technicians are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it indicates the quality of services across nearly every category, including warranty, cost, quality of parts, quality of installation, professionalism and more.
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 awarded 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. For that reason, window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Ottawa’s climate, homeowners will want to mitigate water damage, low efficiency and rot. We factored in local experience to reflect the ability of Ottawa window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Ottawa, IL Window Replacement FAQs
How much does a window install cost?
The national average cost of installing a window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is usually influenced by the type and material of the window, the size of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
The most common kinds of windows for homes include: bay windows, double-hung and single-hung windows, slider windows, picture windows, transom windows, awning windows and casement windows.
Can you install your own windows?
Even though you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Hiring a professional can help ensure that the job is done properly and that you won’t have to spend the time and effort to do it yourself.
Should I replace my windows all at once?
If you want to get more efficient windows and save money on your energy bills, replacing all the windows at once is the only way to see a noticeable difference. However, if you have just a few windows that are damaged or leaky, you can replace just those.
How long does window installation typically take?
Because a window takes about 30 minutes to install, about 16 windows can be installed during an 8-hour work day.