FACTORY SUMMER SALE 1/3 OFF THE PRICE 2026
Renovating Windows and Doors to Transform Your Living Space
Renovating Windows and Doors to Transform Your Living Space
Windows by Installer is a certified factory installation team serving homeowners across Toronto and the GTA for over 23 years. We specialize in energy-efficient vinyl windows and doors, installed by our own trained, insured crew — not subcontractors.
Certified Factory Installer. We hold direct factory certification, which means our team is trained and authorized to install to manufacturer specifications — the same standard you'd expect from any major window company, without the retail markup of a large sales organization. One Point of Accountability. The person who quotes your project is the same person whose crew installs it and who stands behind the warranty. There's no handoff between sales, scheduling, and installation teams. Fully Licensed, Certified, and Insured. Windows by Installer is licensed, certified, and registered with the WSIB. Every homeowner is protected by full liability coverage on every job. Lifetime Warranty. Every window and door we install is backed by a lifetime warranty covering both the product and our workmanship.
Windows by Installer has operated in Toronto and the GTA for more than 23 years, with a founder who has spent his entire career in window and door installation — including two decades leading installations for one of the region's largest window companies before founding this business.
TrustedPros: 4.8 / 5 (44 reviews)
HomeStars: 88% StarScore
Houzz: 4.4 / 5
Birdeye: 4 / 5 (37 reviews)
We install windows and doors throughout Toronto, Etobicoke, North York, Scarborough, Mississauga, Markham, Richmond Hill, Pickering, Maple, and the surrounding Greater Toronto Area.
We install energy-efficient vinyl windows — including casement, awning, slider, hung, and bay/bow styles — along with entry doors and patio doors, all backed by our lifetime installation and product warranty.