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Centennial Windows & Doors
- Gentleman
- Job
- Installation
“Although the first installation date was cancelled at the last minute due to the installer calling in I would still recommend centennial windows to my family and friends.”
Best Window Installers in London, ON
24 companies listed · all 24 in London · 5 open weekends · 15 rated 4.5+
Data verified October 18, 2026
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Riverbend Windows & Doors Inc.
- Products
- Team
- Job
“We had a hard time finding someone who was able to not only replace our basement window with an egress one, but also cut the foundation for it, and build out the window well including proper drainage”
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Forest City Window & Door Ltd
- Patio Door
- Clean
- Job
“Every person I came in contact with from the first person who quoted the job, the second measurements, the office staff and the crew, was a pleasure to deal with.”
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Heritage Renovations
- Competitive
- Team
- Questions
“After having numerous windows and a beautiful patio door done by Heritage, we have just ordered another product- we are installing a window in our back where there isn't a window now.”
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1st Choice Home Solutions
- Eaves
- Windows
- Job
“Even after a number of years of having excellent work done, this business is very professional in helping with other matters related to quick and fast communication.”
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Douglas Window & Door Inc.
- Project
- Job
- Product
“Not going to lie shopping for front doors comes with some sticker shock but Douglas was very competitively priced and I don't mind paying a fair price when a company delivers.”
Listed for homeowners in and around London, ON, these 24 companies fit and repair windows. Frame materials, glazing options and any credentials shown are taken from company websites; the customer lines are quoted from public reviews.
Area overview: London, ON
All 24 companies we list here are in London itself. We have 27 companies in London on file; this page shows the highest-rated 24. The companies on this page are rated from 4.0 to 5.0 across 1,978 reviews; 10 have 50 or more reviews and 15 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), quality (88%) and responsiveness (81%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "cleanliness". 5 are open on Saturdays and 1 on Sundays. Domain records put 14 websites of the companies on this page at ten or more years old; the oldest dates from 1997. 1 offers emergency call-outs; 4 offer financing or payment plans; 8 give free estimates; 8 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for 23 of the companies on this page; 17 publish a contact page; 16 list a public email and 2 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Is the home visit and measurement free?
A no-cost quote is offered by 8 of the 24 companies on this page. It comes with a sales visit, so agree how long it will take before they arrive. Ask for the quote in writing on the day, itemized by window, and be wary of a discount that disappears the moment the visit ends.
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Four Seasons Sunrooms
- Team
- Company
- Roof
“The interior of this new creative space was finished in a manner similar to other rooms in the cottage - with normal electrical, wall, trim, and floor finishes.”
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Blake Exteriors Window and Door
- Eaves
- Job
- Fascia
“Our old home was a bit of a challenge given it had many irregularities with nothing level or straight (with the old windows being installed improperly).”
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C.a.p.o.r. Renovations Inc.
- Quote
- Company
- Roof
“They were timely in coming to see our issue, quickly provided a quote in, and came to complete the work as soon as materials arrived - all within a couple of weeks.”
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Aluminum Associates
“While I was there, the person helping me even determined that my original downspouts did NOT come from there (she could tell by the design of the strap i brought in for colour matching), but that didn't even matter because they have all the usual col...”
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Southwest Doors & Hardware
“I just want to send a thank you to the amazing service we received by Southwest, I called yesterday late afternoon and they were here a my store today to fix our issue!”
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Banman Windows & Doors
- Team
- Price
- Job
“His team definitely delivered quality service upon install; I was very impressed with how tidy they were and they made sure to do a stellar job cleaning up after themselves with minimal dust and debris left behind.”
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Thames Glass Limited
- Price
- Door
- Company
“Excellent service, great price and friendly staff.”
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The Window & Door Centre Inc.
- Company
- Job
- Patio Doors
“My most recent order had an extremely tight and specific timeline that needed to be met and Debbie and Joe really worked hard to make sure that my windows were ready to be installed.”
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Beaumart Aluminum Ltd
- Price
- Company
- Product
“Now that the weather is getting warmer I thought I would post this review as I was already blown away by how well the windows kept the cold out but now that it's warming up I'm equally impressed with how they work in the warmer weather!”
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Jomar Window & Doors
- Front Door
“Jomar is one of very few companies that rebuild your window frame before installing the new windows, I happened to know even the big expensive companies do not do this.”
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Affordable Home Services
- Job
“The installation team was on time, took care of protecting my property and clean up as if they did nothing, installation took about 2 hours to remove old and installed new, i would definitely recommend AHS for your home”
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Raven Windows Inc.
- Products
- Team
- Company
“We built our home in Silverleaf with Millstones Homes and Raven played a huge part in customizing our windows and doors to give our home the modern, premium, European look and feel.”
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Q Exteriors & Awnings
- Work
“Benjamin Franklin if you're looking to get work done on the exterior of your house or you want to buy an awning these are the guys to call day today amazing job on my house I highly recommend them.”
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McCallum Aluminum Ltd
- Prices
- House
“Responded quickly to all questions I had and accommodating to a few changes we made along the way.”
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GP Home Solution Inc.
“Their dedication to customer satisfaction is evident in the fact that I've already asked them to come back and measure the rest of my windows for replacement.”
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W D Dave Smith Renovations
“Great service have used their services before”
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Synergy Windows and Doors
“From quotes to shop drawings, delivery and installation they always go beyond to make sure the product is installed correctly and functions properly.”
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Jay's Window and Door
- Company
“Was in a time crunch for a window repair and Gisele went above and beyond to make sure it was fixed ASAP.”
Window Replacement & Installation Services in London, ON Cost Estimates
Minimum cost
$478
Maximum cost
$27742
National Average
$7625
Avg Per Hour Rates
$59
$4192
$11994
Fair price range is based on 483 cost profiles
Why these companies made our list
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