Replacing your windows is one of the most effective ways to improve comfort, reduce energy costs, and increase the long-term value of your home. At NTI Windows & Doors, we specialize in professional window replacement for homeowners across Hamilton and Burlington, with a focus on proper installation, energy efficiency, and long-term performance — not shortcuts.
We install Canadian-made vinyl windows designed for Ontario’s climate, paired with a meticulous, installation-first approach that ensures airtight performance, durability, and peace of mind.
Why Homeowners in Hamilton Replace Their Windows
• Rising heating and cooling costs
• Persistent drafts and cold spots near windows
• Condensation or moisture between glass panes
• Outside noise entering the home
• Aging or poorly installed windows from previous renovations
• Improving energy efficiency before selling or renovating
Energy-Efficient Window Options Built for Ontario Homes
We supply and install high-performance vinyl windows designed specifically for Ontario’s climate. Our window options include double and triple-pane glass, low-E coatings, argon gas fills, and advanced spacer systems that help reduce heat loss and improve comfort year-round.
Installation Comes First — Always
Even the highest-quality window will underperform if it is installed incorrectly. At NTI Windows & Doors, we follow an installation-first approach on every project to ensure long-term performance, energy efficiency, and durability.
Our installation process includes proper removal of existing windows, careful preparation of the opening, air sealing and insulation around the frame, precise leveling, and clean interior and exterior finishing. This attention to detail is what allows your new windows to perform as intended for years to come.
Window Replacement Cost in Hamilton
The cost of window replacement in Hamilton depends on several factors, including the number of windows being replaced, window size and configuration, glass options, and the installation requirements of your home.
Because every home is different, we provide clear and transparent pricing following a free in-home assessment. Our quotes are straightforward, easy to understand, and include professional installation — with no hidden fees or surprises.
Warranty & Long-Term Support
We stand behind our work with strong warranty coverage on both product and installation. Our windows are backed by long-term manufacturer warranties, and our workmanship is supported should you ever need assistance after installation.
As a local company, we remain available long after the project is complete. If you have questions, concerns, or require service in the future, you will be dealing directly with our team — not a call centre.
Book a Free Window Replacement Estimate
If you are considering window replacement in Hamilton or Burlington, we invite you to schedule a free, no-obligation in-home consultation. We will assess your existing windows, explain your options clearly, and help you make an informed decision — without pressure.
Our goal is to provide homeowners with honest guidance, quality products, and professional installation from start to finish.