This guide compares 20 window and door companies serving Ottawa. The featured shortlist includes Canadian Comfort Windows & Doors, Advantage Enterprises Windows & Doors (AE Windows), and Centennial Glass. Listings claimed by their owner appear first; all other positions follow the published rating methodology. 20 carry a sourced public rating, averaging 4.7 stars; the highest-rated is Advanced View Windows and Doors Inc. at 4.9 stars from 208 Google reviews.
The best window replacement companies in Ottawa treat windows and doors as an energy decision, not just a look, in a city with a heating season this long. They install units rated for our winters, seal and insulate the opening properly, and handle repairs and glass replacement too. The companies below cover window replacement, repair, and installation, plus entry and patio doors, across the city. Each is a real Ottawa business with public reviews you can read, so you can compare product ratings, install quality, and warranty terms before you replace what should last decades.
Also covers: Window replacement · Window repair · Window installation · Entry & patio doors · Glass replacement
Featured professionals
A focused Ottawa shortlist. Listings claimed by their owner appear first; all other positions follow our published rating methodology.
Listings claimed by their owner appear first. All other positions follow the selected sort.
FeaturedNepean +4
4.9(94)on GoogleChecked Aug 2026Windows & DoorsFamily-owned Ottawa window and door supplier on Merivale Road in Nepean, offering replacement windows, doors and siding across the Ottawa region.
View Canadian Comfort Windows & Doors
Nepean
4.8(28)on GoogleChecked Jul 2026Windows & DoorsOttawa window and door replacement company on Robertson Road offering custom window and door supply and installation.
View Advantage Enterprises Windows & Doors (AE Windows)
Kanata +7
4.7(419)on GoogleChecked Aug 2026Windows & DoorsOttawa windows, doors and glass company on Industrial Avenue that handles residential window and door installation and replacement as well as glass and shower work.
View Centennial GlassMore windows & doors
FeaturedBarrhaven +5
4.9(208)on GoogleChecked Aug 2026Windows & DoorsAdvanced View Windows and Doors Inc. is a window installation service in Ottawa offering door manufacturing, doors and windows. Rated 4.9 from 206 Google reviews.
View Advanced View Windows and Doors Inc.
Albion Glass and Aluminum Inc. is a glass & mirror shop in Ottawa offering doors and windows. Rated 4.9 from 126 Google reviews.
View Albion Glass and Aluminum Inc.
Barrhaven +4
4.8(167)on GoogleChecked Aug 2026Windows & DoorsBayview Windows is a window installation service in Richmond, Ottawa offering doors and windows. Rated 4.8 from 167 Google reviews.
View Bayview Windows
Nepean +3
4.3(77)on GoogleChecked Aug 2026Windows & DoorsLong-established family-owned Ottawa window and door company on Grenfell Crescent in Nepean, describing itself as serving the region since 1970. Also handles siding and exterior renovations.
View BestCan Windows & Doors
Barrhaven +5
4.0(197)on GoogleChecked Aug 2026Windows & DoorsBig City Windows & Doors is a door supplier in Ottawa offering door manufacturing, window installation and garage doors. Rated 4 from 197 Google reviews.
View Big City Windows & Doors
Barrhaven +6
4.6(280)on GoogleChecked Aug 2026Windows & DoorsCanadian Choice Windows & Doors is a door supplier in Ottawa offering door manufacturing, windows and window installation. Rated 4.6 from 277 Google reviews.
View Canadian Choice Windows & Doors
Capitall Windows and Doors Ottawa is a window installation service in Ottawa offering door manufacturing and windows. Rated 4.5 from 263 Google reviews.
View Capitall Windows and Doors Ottawa
Eco Ottawa Windows and Doors is a window installation service in Ottawa offering doors, roofing and windows. Rated 4.9 from 138 Google reviews.
View Eco Ottawa Windows and Doors
FeaturedEcoTech Windows & Doors - Ottawa is a window installation service in Ottawa offering doors, garage doors and windows. Rated 4.8 from 208 Google reviews.
View EcoTech Windows & Doors - Ottawa
ClaimedKanata +2
4.7(451)on GoogleChecked Aug 2026Windows & DoorsEcoline windows and Doors is a door supplier in Ottawa offering window installation and windows. Rated 4.7 from 448 Google reviews.
View Ecoline windows and Doors
Barrhaven +6
4.7(561)on GoogleChecked Aug 2026Handyman ServicesHandyman Connection is a handyman/Handywoman/Handyperson in Ottawa offering fence installation, flooring installation and window installation. Rated 4.7 from 561 Google reviews.
View Handyman Connection
Kanata +2
4.9(140)on GoogleChecked Aug 2026Windows & DoorsMirror Works is a glass & mirror shop in Ottawa. Rated 4.9 from 140 Google reviews.
View Mirror Works
Parsons Electronics is a garage door supplier in Ottawa offering doors. Rated 4.1 from 52 Google reviews.
View Parsons Electronics
Barrhaven +6
5.0(9)on GoogleChecked Aug 2026Garage DoorsSafe Guard Garage Doors Ltd is a garage door supplier in Ottawa offering doors. Rated 5 from 9 Google reviews.
View Safe Guard Garage Doors Ltd
Kanata +7
4.6(2,392)on GoogleChecked Aug 2026Windows & DoorsOttawa-area window and door manufacturer and installer based in Vars, serving the Ottawa and Gatineau regions with in-house-built, ENERGY STAR windows and doors.
View Verdun Windows and Doors
Barrhaven +5
4.9(140)on GoogleChecked Aug 2026Windows & DoorsWestend Windows and Doors is a door supplier in Ottawa offering window installation and windows. Rated 4.9 from 140 Google reviews.
View Westend Windows and Doors
ClaimedBarrhaven +8
5.0(2)on GoogleChecked Aug 2026Windows & DoorsWindow Mart Ottawa is a window and door company in Ottawa supplying and installing replacement vinyl windows, entry doors and patio doors. Rated 5 from 2 Google reviews.
View Window Mart OttawaBuyer guide
What separates a great window and door company from a cheap quote, and the questions worth asking before you sign.
A great window installed poorly still leaks air. Ask how they insulate and seal around the opening, and whether they replace rotten framing they find.
Look for a low U-factor and an ENERGY STAR rating suited to Ottawa's climate zone. A good installer explains the rating rather than just selling a brand.
Energy-efficiency rebates change year to year. Ask which current federal or provincial programs your project qualifies for, and get the qualifying specs in writing.
There is a product warranty and an installation warranty. Confirm the length of each and who you call if a seal fails or a draft appears later.
Common questions
For homeowners
Tell us about the job and we will suggest up to three Ottawa window and door companies based on the service and area you select.