Windows Replacement Cost Ontario — Free Instant Estimator
Not sure about windows replacement cost in Ontario? Most homeowners pay $400–$900 per window installed — supply and labour included. Use Alpha’s free estimator to see your exact windows replacement cost in under two minutes. No registration, no sales call.
Windows Replacement Cost by Type
The table below shows typical windows replacement cost ranges — all prices include supply and professional installation in Ontario.
| Window / Door Type | Installed Cost (CAD) | Notes |
|---|---|---|
| Fixed / Picture Window | $300 – $650 | Non-opening; lowest cost per sq ft |
| Casement Window | $450 – $900 | Side-hinged; most popular style |
| Awning Window | $400 – $800 | Top-hinged; great for basements |
| Single Slider | $380 – $750 | Easy to operate; wide openings |
| Double Slider | $420 – $820 | Both panels slide; max ventilation |
| Sliding Patio Door (2-panel) | $1,400 – $2,200 | 6 ft or 8 ft wide openings |
| Sliding Patio Door (3–4 panel) | $2,200 – $4,000 | Wide openings; multi-panel configs |
What Affects Windows Replacement Cost
- Window Style — Casements and awnings cost more than fixed or slider windows due to hardware complexity.
- Glass Package — Upgrading from Loé 272 to Loé 366 or adding i89 adds $30–$90 per window but reduces energy bills.
- Exterior Colour — White is standard. Specialty colours add $30–$80 per window.
- Installation Type — Retrofit (insert) installation costs less than full-frame replacement.
- Window Size — Larger windows cost more. Custom sizes carry a premium.
- Grilles & Add-ons — Brick mould, jamb extensions, and decorative grilles each add incrementally.
How the Windows Replacement Cost Estimator Works
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Step 01 — Enter Room Name & Dimensions
Type the room name and enter the overall window width and height in inches. These are your rough opening dimensions — not the glass size.
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Step 02 — Choose Style, Glass & Options
Select your window style (casement, slider, fixed, etc.), glass package (Loé 180 / 272 / 366 / i89), exterior colour, grille style, and installation type. Pricing updates instantly as you configure.
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Step 03 — Review Price & Add to Quote
See the itemized price per window. Add it to your quote cart. Repeat for each window or patio door in your project, then submit — no account required.
More Windows Replacement Cost Answers
Cost to Replace Basement Windows in Ontario
Replacing basement windows in Ontario typically costs $380–$750 per window installed, depending on the existing rough opening size and whether the frame needs replacement. Basement windows are most commonly casement or awning style — both provide the ventilation and egress compliance that below-grade rooms require. If the opening needs enlarging to meet Ontario Building Code egress requirements (minimum 0.35 m² unobstructed opening), the project becomes an egress window installation, which runs $2,500–$4,500 and includes concrete or block cutting, framing, a new window, and a window well.
Average Price of Triple-Glazed Windows in Toronto
Triple-glazed windows in Toronto typically cost $600–$1,200 per window installed, compared to $400–$900 for standard double-pane. For most Toronto homes, a high-performance double-pane window with Loé 366 + i89 coating achieves near triple-pane thermal efficiency (U-Factor 0.20) at a significantly lower windows replacement cost — making it the more popular choice among energy-conscious homeowners.
How Much Does a Sliding Patio Door Cost to Install in Ontario?
A vinyl sliding patio door in Ontario costs $1,400–$4,000 installed, depending on the size (6 ft vs. 8 ft wide), panel count (2, 3, or 4 panels), glass package, colour, and installation type. Standard 2-panel, 6-foot doors with Loé 272 glass run $1,400–$2,200. Wider or multi-panel configurations with premium glass and custom colours reach $3,000–$4,000.
Windows Replacement Cost — FAQ
- How much does window replacement cost in Ontario?
- Most Ontario homeowners pay between $400 and $900 per window installed, including supply and labour. A typical whole-house replacement of 8–12 windows runs $4,000–$10,000 all-in.
- What is the average cost to replace all windows in a house?
- For an average Ontario home with 8–14 windows, full window replacement typically costs $5,000–$12,000 installed. Factory-direct providers like Alpha Windows reduce this significantly by eliminating distributor markup.
- Does the window replacement price include installation?
- Yes. All prices in the Alpha estimator include supply and professional installation — labour, materials, and cleanup. Optional extras like jamb extensions, brick mould replacement, or specialty trim can be added in the estimator.
- Is window replacement worth the cost?
- Yes. New Energy Star–certified windows reduce heating and cooling costs by 15–25% annually, eliminate drafts and condensation, and increase resale value. The payback period on quality Low-E windows in Ontario is typically 8–14 years.
- How long does window replacement take?
- A single window takes 30–90 minutes to replace. A full-house project of 10–12 windows is typically completed in one day with a two-person crew.
- Do I need a permit to replace windows in Ontario?
- A permit is generally not required for a like-for-like window replacement. Enlarging an opening or installing an egress window in a basement bedroom does require a building permit.
- Can windows be replaced in winter in Ontario?
- Yes. Window replacement can be done year-round in Ontario. Professional installers minimise indoor exposure time to under 15 minutes per opening.
- Which glass package gives the best value for Ontario homes?
- Loé 272 is the best all-round value — it balances cold-weather insulation and summer heat rejection, and meets Energy Star requirements across all Canadian climate zones.