On Star Windows & Doors is a name people trust in London, Ontario for best replacement windows and doors. We focus on offering the finest workmanship, a superior overall customer experience, and most advanced technology in the windows and doors industry at an affordable price.

The residents of London, Ontario, are not just our customers. In fact, we believe in treating all our valued clients like our family and aims at surpassing their expectations. Together, our informed sales staff, experienced craftsmen and qualified service technicians, offers exceptional customer service before, during and after every sale. We understand that every project is unique. With this view, we strive to provide you with the finest quality and value into every window, regardless of what style you choose.

On Star offers several different styles and designs of replacement windows, as well as, patio and entrance doors to create a stunning, high-performance home. With us, you not only get the most stylish and perfect window or door but also the best installation services. Proper installation is critical to ensure that the products perform efficiently and last as long as possible. You can trust our experienced team of installers for first-rate window and door installation.

Whether you’re building a new home or remodeling the existing one, On Star windows and doors allow you to get creative without sacrificing quality or stretching your budget. All products are designed and installed to meet your specific needs, depending on architectural style and regional preference. From awing windows to casement, double-hung to single-hung, and slider to bay/bow windows, all models are crafted using the highest quality materials, resulting in products that are not only beautiful but also durable, strong and energy efficient. Moreover, with our classy entry and patio doors, you can provide your home or workspace with more refinement and natural light.