Best Window Installers near Leamington, ON
1 of these companies is based in Leamington; the others serve Leamington from towns including Oldcastle (36 km), Wheatley (9 km) and Comber (17 km).
1 open 24/7 · 5 open weekends · 8 rated 4.5+
Data verified October 16, 2026
Gauthier Roofing and Siding
DRW Home Services Inc.
Summit Windows and Doors
Lakeshore Windows & Doors LTD
Preferred Windows & Doors Inc
Listed for homeowners in and around Leamington, ON, these 10 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: Leamington, ON
The 10 companies on this page are rated from 3.9 to 5.0 across 814 reviews; 4 have 50 or more reviews and 8 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (96%), responsiveness (92%) and punctuality (84%). The topics that come up most in reviews of the companies on this page are "price", "communication" and "cleanliness". 1 is open around the clock; 5 are open on Saturdays and 1 on Sundays. 5 have ten or more years of experience, the longest 25 years. 1 offers emergency call-outs; 2 offer financing or payment plans; 3 give free estimates and 4 are family- or locally-owned. We have a website on file for all 10 of the companies on this page; 8 publish a contact page; 9 list a public email and 1 takes bookings online. We count these figures across the companies on this page; distances are straight-line, and 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 3 of the 10 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.