Ottawa’s Leading Replacement Windows and Doors Installation Service

Big City Windows & Doors provide a lifetime fully-transferable warranty for all our windows as a guarantee of quality. Should anything happen to our product, we 100% stand by our warranty. Our holistic approach to what we do informs our consistency and success in being one of Canada’s leading window installation companies.

Windows & Doors Ottawa

Why to choose
Big City Windows

Get Free Consultation
  • Save up to 25% on your annual energy bills
  • Ontario Factory Direct Windows
  • Serving Ottawa since 2000
  • A+ BBB rating
  • Homestars Best of Award Winner 2019, 2020, 2021, 2022, 2023
  • Lifetime Transferable warranty
  • Best price guaranteed


  • 25 Miles for a Completed Quote
  • 25 Miles for an Installed Window
  • 50 Miles for an Installed Door
  • 20 Miles for a Review, Plus an Extra 5 Miles When You Attach a Picture of the House

Our   windows Benefits

Pleasing aesthetic
Excellent condensation
Superior resistance to ozone,
UV light and oxidation
Enhanced environmental
comfort near windows
Optimized energy savings
Long-term durability
Strongest frames. Lowest bills.
With revolutionary LOCKTIGHT windows.

See our comparison between
generic window and LOCKTIGHT™ window below.

Air tightness
Energy efficiency
Easy to maintain

Have you ever experienced cold drafts coming in from your window, or fragile frames that crack on impact? Maybe you have a traditional window that doesn't protect against UV rays and has started to peel, or a creaky door that keeps getting stuck? Well, it's time to search for replacement windows or a new door.


As an industry-leading window replacement company, we manufacture and service all of our types of windows and doors locally from Canadian products. At Big City Windows & Doors, we are proud of our devotion to quality, as well as our commitment to reliable windows installation services.

With many years of experience, we understand that your windows and doors are crucial for your home's visual and curb appeal. We also keep in mind the important role of high-quality windows in minimizing your environmental footprint and lowering greenhouse gas emissions. By doing so, you can save up to 25% off of your heating or cooling costs and cut your energy bills.

At Big City Windows & Doors, we put our customers first. With all our windows and doors, your list of choices is virtually endless, including double or triple glass for maximum heat and sound insulation, LoE (low-emissive) coating to help you save even more on energy costs, tuck-away handles for a sleek appearance, or window grills to give your home a classy and special touch.


LOCKTIGHT™ windows come in all shapes and sizes with Big City Windows & Doors, utilizing only the best in our uPVC windows with revolutionary new technology.

Our exclusive LOCKTIGHT™ windows are built to withstand the most extreme Canadian winter and weather conditions, with corrosion-resistant hardware and premiumclass multi-chamber construction to maximize insulation and resilience.

Big City Windows & Doors place a strong focus not only on maintaining superior quality of our products but also on precise and timely installation, attending to the tiniest details.

LOCKTIGHT™ allows you to have peace of mind, as our windows offer security due to corner locking technology.

LOCKTIGHT™ windows guarantee higher efficiency, enhanced performance and are customized for your needs.



Sign up for a free consultation and get instructions on how to properly measure your windows - or, we can do all the measurements for you!


Choose from numerous window types and an unlimited colour palette to make your home shine.


Your project manager will contact the suppliers to prepare your custom-made windows in a hassle-free process.


Our team will get the job done as quickly and efficiently as possible without sacrificing quality.

Windows can come at hefty prices and with long waits, but you can be sure that Big City Windows & Doors will respond quickly to your issues. Don't hesitate to book a free consultation using our online form, or to contact us at 613-737-0077.

Frequently Asked Questions About Window Replacements in Ottawa

How Much Does Window Replacement Cost?

The final cost of your window replacements will be determined by the exact specifications of your home, from its structural needs to your energy-efficiency requirements in our Ottawa climate. Their dimensions and quantity will also make a major impact on your total cost.

Regardless of the type of window you choose, newer, more energy-efficient windows can raise the value of your home in a way that few other kinds of home upgrades can match.

For a quick estimate of your total window replacement cost, click here for our guide.

What Materials Are Your Windows Made of?

Our windows are made from unplasticized polyvinyl chloride, also known as uPVC. Unplasticized polyvinyl chloride is similar to regular PVC in that it is also used for its resistance to moisture and durability - however, uPVC is even more durable than PVC, making it ideal as a high-quality, low-maintenance choice of material for your new windows.

In general, one of the strongest features of uPVC vinyl windows is that they require very little maintenance, and can be made in a wide selection of colours and styles.

Is Big City Windows a Window Manufacturer?

Yes, we are! As an industry-leading window replacement company, we at Big City Windows manufacture vinyl windows to fit the exact needs of your home.

Do I Qualify for a Greener Homes Grant Rebate If I Buy New Windows?

Yes, you qualify for the Greener Homes Grant rebate if you purchase our high-quality LocktightTM windows! To see if your replacement windows qualify for the grant, just ask a Big City Windows expert.

Does Big City Windows Offer a Lifetime Warranty?

Yes, we do! Big City Windows provides a lifetime, fully-transferable warranty on all of our windows - if your Big City windows ever need servicing or repair, we’ll be there to help.

Click here to learn more about our lifetime warranty.

What Type of Window is Most Energy Efficient?

Generally, hinged-sash windows, along with casement and awning windows, are considered to be the most energy-efficient styles of windows, due to the reliable, weather-tight seals they create when closed.

In addition, fibreglass-framed windows can offer your home the highest window R-value on the market, thanks to their triple-paned glass and Low-E coating capabilities.

Beyond these options, other energy-efficient types of windows include vinyl windows, along with composite-framed windows built with double-paned glass.

What Advantages Does Triple-Paned Glass Offer Over Double-Paned Glass?

Both triple-paned glass and double-paned glass contain an inert gas between their panes called Argon. Argon gas doesn’t conduct cold or heat as well as regular air, making it a great insulator for your home as it keeps your indoor temperature stable.

Double-paned glass has one layer of Argon between its two panes of glass, while triple-paned windows contain two layers of Argon between their three panes of glass. This increase in Argon gas between frames amplifies the R-value of your windows, meaning the energy passing through your window is nearly zero, and your home loses virtually no heat or cool air.

How Often Do You Need to Replace Your Windows?

Every 15-20 years or so, new window technology emerges in the Canadian market, making newer replacement windows that are more efficient at conserving energy an economic advantage for your window replacement project.

According to industry experts, replacing your old, drafty windows and doors can help you reduce your home energy bill by as much as 25% - but only if they are professionally installed by experts who know what they are doing. Luckily, Big City is here to help - if you’re ready to get started on your window replacement project, just click here to discuss your project with a pro.


Great service, the guys were very professional. We notice a big difference in the new windows. Will most likely use Big City Windows to replace downstairs next year. Good Job guys.
Robert Skvalovski, Ottawa, ON
Big City W&D completed a 7 window & 2 door replacement at our home in June of 2020. We had received several quotes and decided to go with a new company in the area. We're glad we did. We are very pleased with both the quality of the products and the quality of the installation. The windows and doors were of various sizes and types. Employees Vladimir and Andrea whom we dealt with were knowledgeable regarding their products and professional in their manner and workmanship. We will certainly hire this company again.
Marry Williams, Ottawa, ON
The product and installation were both flawless. I'm very pleased with my new windows and I would be happy to do business with Big City Windows Ottawa again in the future.
Kathy Martin, Ottawa, ON
Our Products

Big City Windows & Doors takes no shortcuts when producing and installing each of our many types of windows and doors, making sure you get the highest quality for your peace of mind. Our windows and doors come in multiple designs, including casement, awning, sliders, and many more while having the most extensive range of shapes, styles, and colours to match your home's elegance and materials.

Replacement Windows Ottawa


View More
Entry Doors Ottawa

Entry Doors

View More
Porch Enclosures

Porch Enclosures

View More
Flexible Marble

Flexible Marble

View More

Our Latest Windows Replacement Projects in Ottawa

Bigcity Reno
New Tech Stone

Latest articles about Windows and Doors

Does Condensation on Windows Mean They Need to be Replaced?
Read More
How to Prevent Thermal Stress Cracks in Windows
Read More
Does Homeowners Insurance Cover Window Replacements?
Read More
Types of Windows
Types of Windows
Read More
Read More