Windows Replacement
Replace your doors, windows, or sliding glass doors with interest free loans of up to $40,000 (10-year term) through the Canada Greener Homes Loan and get up to a $5,000 rebate.
Our Window Products

Casement Windows

Awning Windows

Sliding Windows

Hung Windows

Fixed Windows

Bay and Bow Windows

Tilt and Turn Windows

Custom Shaped Windows
Types of Window Installations We Offer
Brick-to-Brick
- Complete removal of the old window down to the house framing
- Optional brick mould accessories available in three sizes
- Allows for upgrades to interior trim and jamb
- Offers greater energy efficiency compared to retrofit
- Ideal for replacing damaged or poorly insulated windows
Stud-to-Stud
- Full removal of the old window down to the framing
- Exterior finished with caulking or aluminum flashing
- Delivers better energy efficiency than retrofit installations
- Ideal for replacing damaged or poorly insulated windows
Retrofit
- The window is removed and replaced
- Existing frame and interior/exterior trim remain intact
- Faster and more cost-effective than full window replacement
- Ideal when the frame is well-insulated and in good condition
- Enables glazing upgrades for better comfort and performance
Our Vinyl Window Features
- Durable extruded vinyl construction
- Fusion-welded 3-1/4” or 4-9/16” frame and sash for superior strength
- Multi-hollow chamber design to increase rigidity and insulation
- Warm-edge, non-metal Super Spacer®
- Advanced triple weatherstripping for a superior wind leakage seal
- Standard white finish, with 32 additional colour options available
Google Reviews

UV Protection With uPVC Windows
Our exterior windows are manufactured using an exclusive, 100% lead-free uPVC powder compound. These uPVC windows are designed to endure prolonged exposure to sunlight. The compound offers excellent resistance to impact and fading, ensuring that the windows do not crack, discolour, blister, or warp, while remaining entirely maintenance free.
Weather Proof Windows for Homes
Advanced triple weather stripping provides a superior seal and effective leak protection through an integrated locking system, secured at the corners, and attached to the window frame. This design ensures consistent locking at the top corner of the window, regardless of its height. Corners are typically the most vulnerable points in structural integrity and air infiltration tests.

Window Replacement in 5 Easy Steps
Window Replacement in GTA
AZTech Doors & Windows is a trusted window replacement expert – Quality, Efficiency, and Style. We specialize in window installation services across the Greater Toronto Area (GTA). As a family-owned Canadian company with over 25 years of experience, we have become a trusted name known for superior quality and personalized exterior window replacement services. We also offer made-to-order windows that provide long-lasting durability, high performance, and visual appeal.
Our full house window replacement services include the supply and installation of ENERGY STAR® windows. Designed specifically for Canadian climates. Our energy-efficient windows reduce heating and cooling costs and improve year-round comfort.
Our Recent Blogs
The Go-To Solution for Windows and Doors in New Construction and Renovations
If you are building a new home or updating an older one anywhere in Toronto or the Greater Toronto Area (GTA), you are going to need windows and doors that work for our Canadian climate, and hold long-term value.That is where vinyl windows and doors come in. They are...
Ontario Home Efficiency Rebate
Starting January 2023 Canada Greener Homes Grant partners up with Enbridge Home Efficiency Rebate Program in Ontario expanding incentives at the same time. It is now called Home Efficiency Rebate Plus (HER+) – You Can and Should Take Advantage In January 2023,...
How To Use The Windows Calculator – Cost Estimates
Let’s go through the steps when using our Windows Calculator.Step 1 – go to our Windows Calculator. You’ll see that there are a number of rows and columns on our Windows Calculator. The rows represent each window with unique parameters; the columns have fields for...