# Window Replacement Markham | Toronto Quality Windows

> Window replacement and doors in Markham. Energy-efficient upgrades and rebate guidance for York Region homes. 10-year labour warranty. Free quote.

URL: https://torontoqualitywindows.ca/service-areas/markham/

![](/images/misc/installation-crew-fitting-new-windows-on-a-suburba.webp)

Serving Markham & surrounding areas

# Window & Door Replacement in Markham

Last updated: August 9, 2026

Markham's mix of established neighbourhoods and newer subdivisions concentrates demand for energy-efficiency upgrades and rebate guidance across York Region.

-   Local Markham crews
-   Free in-home quote
-   4.9 stars on Google

Get a Free Quote

[/contact/ →](/contact/)

 

(437) 524-9688

[tel:+14375249688 →](tel:+14375249688)

-   4.9 / 5
    
    150+ Google reviews
    
-   Energy Star Zone C
    
    Certified for Climate Zone 6
    
-   In-House Crews
    
    No subcontractors, WSIB insured
    
-   10-Year Labour Warranty
    
    Plus manufacturer warranties
    

\[ Problem Register \]

## Sound Familiar?

Four things bring GTA homeowners to us. Here's what's actually going on behind each of them.

### Drafty Builder-Grade Windows

Cold air rolls along the floor and the furnace runs longer every winter.

Worn weatherstripping and racked sashes stop compressing. A properly sealed Energy Star Zone C unit closes the pathway completely, which is the change most homeowners notice first.

### Foggy or Failed Glass Units

Haze and mineral staining you cannot wipe off, trapped between the panes.

The perimeter seal on the insulated glass unit has failed and the argon has escaped. If the frame is sound we swap only the glass unit, which costs a fraction of full replacement.

### Confusion Over Ratings and Rebates

U-factor, Zone C, Greener Homes, HER+, and no clear answer on real installed cost.

We state the U-factor per opening in writing, price each window individually, and explain the rebate assessment sequence before you commit rather than after.

### Inconsistent Subcontracted Installs

You meet a salesperson, then a crew you have never spoken to arrives.

Every installation is carried out by our own in-house crews. The company that measured the job is the company that installs it and warranties it for 10 years.

We diagnose first and quote second, including telling you when a repair beats a replacement.

Book a free assessment

[/contact/ →](/contact/)

\[ Markham Services \]

## Windows and Doors We Install in Markham

Markham's mix of established neighbourhoods and newer subdivisions concentrates demand for energy-efficiency upgrades and rebate guidance across York Region.

Every service below is the same specification we install everywhere else in the GTA. If you're comparing options first, our overview of 

Energy Star Zone C window and door replacement across the Greater Toronto Area

[/ →](/)

 covers the ratings, warranty and pricing approach that apply to Markham projects.

![Installer fitting a new triple-pane vinyl window into a brick opening on a Toronto home](/images/misc/installer-fitting-a-new-triple-pane-vinyl-window-i.webp)

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Most Requested

### 

Window Replacement

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Supply and in-house installation of vinyl, casement and triple-pane windows certified to Energy Star Zone C.

-   Vinyl, casement and triple-pane options
-   Energy Star Zone C / Climate Zone 6 certified
-   Retrofit and full-frame (brick-to-brick) installation

Supply & install By quote

View Windows

[/window-replacement/ →](/window-replacement/)

![European tilt-and-turn aluminium window tilted open in a bright Toronto living room](/images/misc/large-european-tilt-and-turn-aluminium-window-tilt.webp)

[/european-tilt-and-turn-windows/ →](/european-tilt-and-turn-windows/)

Premium Systems

### 

European Tilt-and-Turn Windows

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Authorized European tilt-and-turn window systems from Schuco, Reynaers and Cortizo with best-in-class thermal and security performance.

-   Authorized Schuco, Reynaers & Cortizo dealer
-   Dual-action tilt and turn operation
-   RC1-RC4 break-in resistance ratings

Supply & install By quote

View Tilt & Turn

[/european-tilt-and-turn-windows/ →](/european-tilt-and-turn-windows/)

![Foggy window with condensation trapped between the panes in a GTA home](/images/misc/foggy-window-with-visible-condensation-trapped-bet.webp)

[/window-repair-foggy-igu/ →](/window-repair-foggy-igu/)

Lower-Cost Fix

### 

Window Repair & Foggy IGU Replacement

[/window-repair-foggy-igu/ →](/window-repair-foggy-igu/)

Repair of foggy, drafty and failing windows, including insulated glass unit (IGU) replacement, before you commit to full replacement.

-   Foggy / failed IGU diagnosis
-   Sealed glass unit replacement
-   Draft and hardware repair

Supply & install By quote

View Window Repair

[/window-repair-foggy-igu/ →](/window-repair-foggy-igu/)

![New fiberglass entry door with sidelites and transom on a GTA brick home](/images/misc/new-fiberglass-entry-door-with-sidelites-and-trans.webp)

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One-Day Install

### 

Entry Doors

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Steel and fiberglass entry doors with multi-point security, decorative glass options and thermal-break sills, installed by in-house crews.

-   Steel and fiberglass slab options
-   Multi-point locking systems
-   Sidelites, transoms & decorative glass

Supply & install By quote

View Entry Doors

[/entry-doors/ →](/entry-doors/)

![Wide sliding patio door open onto the backyard deck of a GTA home](/images/misc/wide-sliding-patio-door-open-onto-a-backyard-deck-.webp)

[/patio-doors/ →](/patio-doors/)

Rear Elevation Specialists

### 

Patio Doors

[/patio-doors/ →](/patio-doors/)

Sliding, garden and premium European bifold / lift-and-slide patio door systems built for GTA winters.

-   Sliding and garden (swing) patio doors
-   Premium bifold & lift-and-slide systems
-   Low-E glazing with gas fills

Supply & install By quote

View Patio Doors

[/patio-doors/ →](/patio-doors/)

\[ Method \]

## How a Markham Project Runs

Five stages from first phone call to warranty registration. No surprises in the middle.

1.  01
    
    ### Free In-Home Measure
    
    About 45 minutes. We measure every opening at your Markham home, check frame and sill condition, and confirm whether retrofit or full-frame is right for each one.
    
2.  02
    
    ### Written Specification
    
    Itemised pricing per opening with the glazing package, U-factor and installation method stated. You can compare it line by line against any other quote.
    
3.  03
    
    ### Manufacture & Delivery
    
    Units are built to your measurements. We confirm the delivery date before booking the crew, so your home is never opened up waiting on product.
    
4.  04
    
    ### In-House Installation
    
    Our own crews remove, flash, insulate, seal and trim each opening. Most homes in the area are complete in one to three days with the site cleaned each evening.
    
5.  05
    
    ### Walkthrough & Warranty
    
    We check operation and locking on every unit with you, hand over care instructions, and register your 10-year labour warranty.
    

## Not Sure What Your Markham Home Needs?

Tell us what's happening at the window and we'll give you the honest answer, in writing, before you spend anything. No pressure, no obligation.

(437) 524-9688

[tel:+14375249688 →](tel:+14375249688)

 

Book a Free Measure

[/contact/ →](/contact/)

\[ Local Advantage \]

## Why Markham Homeowners Choose Us

-   Rebate guidance for Canada Greener Homes and Enbridge HER+
-   Retrofit, full-frame and glass-unit-only options explained honestly
-   Energy Star Zone C certified products
-   In-house crews, no subcontractors
-   10-year labour warranty

![Installer measuring a window opening inside a home in the Markham area](/images/misc/installer-measuring-a-window-opening-inside-a-live.webp)

\[ Logistics \]

## Working Across Markham

Markham jobs route off Highway 407, the 404 and Highway 7. Newer Cornell and Berczy Village streets have narrower frontages and rear laneways, so we confirm access and staging at measurement rather than on install day.

Established Unionville and Markham Village properties usually have more room to work. Most whole-home projects finish in one to two days, with larger homes running to three.

\[ Housing Stock \]

## Markham Housing Stock We Know Well

**1990s–2000s subdivision homes** in Milliken Mills and Berczy Village mostly need glass-unit replacement or retrofit inserts, since original frames are typically still square.

**Cornell's newer laneway-access homes** have tall, narrow openings and tight staging. Installs are quick but require planned access.

**Unionville and Markham Village heritage-adjacent properties** are more varied. Wood-framed openings here often justify full-frame brick-to-brick work to correct decades of sill deterioration.

![Residential street of brick detached homes typical of Markham](/images/misc/typical-greater-toronto-area-residential-street-of.webp)

\[ Neighbourhoods \]

## Areas We Cover in Markham

-   Unionville
-   Thornhill
-   Milliken Mills
-   Cornell
-   Markham Village
-   Berczy Village

\[ Local Landmarks \]

## Landmarks Near Our Markham Service Area

-   Main Street Unionville
-   Markham Civic Centre
-   Pacific Mall
-   Toogood Pond Park

Get Directions

[https://www.google.com/maps/dir/?api=1&destination=43.8564,-79.3377 →](https://www.google.com/maps/dir/?api=1&destination=43.8564,-79.3377)

\[ Client Record \]

## What Markham Customers Say

Rated 4.9 out of 5 across 150+ reviews.

> "They quoted three options instead of pushing the most expensive one. We went with retrofit units and the house is much warmer."

Wei C.Unionville

> "New patio door and four windows at the back. Clean install, sealed properly, and finished in a day."

Laura B.Berczy Village

\[ Coverage \]

## Serving Markham and Surrounds

\[ Markham FAQ \]

## Markham Questions, Answered

### Which Markham neighbourhoods do you serve?

Unionville, Thornhill, Milliken Mills, Cornell, Markham Village, Berczy Village and the surrounding York Region areas.

### Do you help with the Canada Greener Homes Grant?

We explain eligibility and the required pre- and post-retrofit energy assessments, and we make sure the products we quote are Energy Star Zone C certified so they qualify.

### How much does window replacement cost in Markham?

$600–$1,200 per vinyl window installed, with triple-pane upgrades adding roughly $900–$1,800 per opening. Whole-home projects generally run $8,000–$18,000.

### Can you work on homes with rear laneway access?

Yes. Cornell-style laneway homes need access confirmed in advance, which we do at the measurement visit so install day runs without surprises.

### How long will the work take?

One to two days for most Markham homes. Larger properties with more openings run to three.

### Still have a question?

Ask us during your free in-home measurement, or get in touch and we'll answer it straight.

Get a Free Quote

[/contact/ →](/contact/)

\[ Nearby Coverage \]

## We Also Serve Areas Near Markham

ScarboroughCity of Toronto

[/service-areas/scarborough/ →](/service-areas/scarborough/)

North YorkCity of Toronto

[/service-areas/north-york/ →](/service-areas/north-york/)

Richmond HillYork Region

[/service-areas/richmond-hill/ →](/service-areas/richmond-hill/)

View all service areas

[/service-areas/ →](/service-areas/)

![](/images/misc/installation-crew-finishing-a-row-of-new-windows-o.webp)

Serving Markham and the wider GTA

## Need Windows or Doors in Markham?

Free in-home quote across Markham. Itemised pricing per opening and a 10-year labour warranty on every installation.

Get a Free Quote

[/contact/ →](/contact/)

 

(437) 524-9688

[tel:+14375249688 →](tel:+14375249688)

-   10-year labour warranty
-   In-house crews, never subcontractors
-   Energy Star Zone C certified