Popular Cities
2 of these companies are based in Ajax; the others serve Ajax from towns including Toronto (30 km), Whitby (8 km) and Oshawa (16 km).
2 open 24/7 · 14 open weekends · 20 rated 4.5+ · 4 show a licence
Data verified October 18, 2026
Listed for homeowners in and around Ajax, 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.
The 24 companies on this page are rated from 4.2 to 5.0 across 1,152 reviews; 8 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (95%), quality (90%) and responsiveness (85%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "estimates". 2 are open around the clock; 14 are open on Saturdays and 6 on Sundays. 4 show a licence on their websites. Domain records put 8 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 4 offer emergency call-outs; 2 offer financing or payment plans; 16 give free estimates; 5 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for 23 of the companies on this page; 22 publish a contact page and 16 list a public email. 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.
2 of the 24 give an address in Ajax itself; the rest serve it from within 35 km. A showroom often covers a whole region, so distance matters less than who does the installing. Ask whether the fitters are employees, and how a callback in the middle of winter is handled.
- “Sheldon was on time and professional, well prepared and completed the job within a respectable timeframe.” — customer of Revitalize Windows & Doors Inc
- “From the moment we first met Richard he was more than happy to explain every step and every feasible option for us with patience and a smile on his face.” — customer of Fortress Windows & Doors Inc.
- “From initial quote to finish, Charlie and his team were awesome on our window replacement.” — customer of Northstar Glass
Excerpts from public reviews of the companies listed on this page.
