In Ontario, installed replacement windows typically range from about $400 to $4,000 per window, depending on the window style, frame material, and installation complexity. Reviewing prices by type and material, then using ENERGY STAR rebates, helps homeowners plan and reduce total costs.
Many Ontario homeowners start looking into window replacement after noticing drafts, condensation between the panes, or a heating bill that keeps climbing, especially in older homes where the original windows have been in place for 20 years or more.
With energy costs on homeowners' minds and provincial rebate programs like the Home Renovation Savings Program making energy-efficient upgrades more accessible, window replacement has become one of the more common home improvement projects across the province.
The tricky part is that pricing swings widely depending on window type, frame material, and installation complexity, so a quote that seems high for one project might be perfectly reasonable for another.
Below, we break down replacement window prices in Ontario by type, material, and installation cost, along with rebates that can reduce your total, so you can budget with a clearer picture of where your money is going.
How Much Do Replacement Windows Cost in Ontario?
Replacement windows in Ontario typically cost $400 to $4,000 or more per unit installed, depending on the window type, frame material, size, and installation complexity. Most whole-house window replacement projects run $10,000 to $30,000, and ENERGY STAR upgrades qualify homeowners for provincial rebates that lower the final cost.
Window replacement prices vary based on window style, frame material, size, and whether the windows are ENERGY STAR-certified. Let’s break down the biggest cost factors and what you can expect to pay for new windows.
Window Replacement Cost by Style
Casement windows, bay windows, slider windows, and picture windows each come with their own price range, largely driven by hardware complexity and glass area.
Here's what Ontario homeowners typically pay per window, installed:
At the top of the range are bay and bow windows, which require structural support and multi-panel installation, while fixed or picture windows cost less since they have no moving hardware.
Meanwhile, double-hung and awning windows fall in the middle, largely due to sash and hinge hardware. Clera's double-tilt and slider-tilt options offer tilt-and-turn functionality at a lower cost than imported alternatives.
Image Source: Canva
Average Window Replacement Cost by Material
When it comes to window materials, vinyl windows are usually the lowest-priced option, offering solid durability and minimal upkeep, though some homeowners find them less attractive. Wood windows provide a timeless style and strong insulation, but they cost more and require more ongoing maintenance.
Frame choice influences longevity, energy performance, and curb appeal just as much as it impacts cost. Here's a comparison of the performance and average costs to replace windows in Ontario by material:
Vinyl windows remain the most budget-friendly frame material for most Ontario homeowners, while aluminum windows and wood windows sit at the higher end due to material and finishing costs.
Explore the difference between vinyl vs. fibreglass windows and vinyl vs. wood windows in our comparison blogs.
Basement Window Replacement Cost in Ontario
Basement windows are an essential but often overlooked part of a home, particularly in Ontario, where building codes and insulation needs are strict.
Here's what to expect for basement window replacement costs in Ontario, including egress windows.
Egress windows are legally required in basement bedrooms and must have an unobstructed opening area of at least 20" x 24" with a net clearance of 5.7 square feet, which is why egress window costs in Ontario are higher than those of standard basement windows.
Replacing windows is a significant expense, yet well-made units can last 15 to 25 years (or even longer), depending on the frame material and installation quality. At the time of resale, homeowners may recover about 70% to 76% of the project cost for wood and vinyl window replacements, though results differ by region, window style, and market conditions.
Window Installation Costs in Ontario
The average cost of installing windows in Canada is factored into the prices above, but installation complexity is one of the main reasons two homeowners can pay very different amounts for the same window type.
Installation labour costs increase when:
- Old frames need to be removed or modified rather than replaced in the existing opening
- Installation is on a second storey or in a hard-to-access area of the home
- Window size is larger than standard, requiring additional structural support
The number of windows you're replacing also affects total window installation prices. A contractor pricing how many windows need replacing will typically offer a lower rate per window as that number increases.
For basement windows and egress installations specifically, labour costs run higher due to foundation work.
Check our Window FAQ page for answers to common installation questions.
Image Source: Pexels
Triple Pane Glass and Energy-Efficient Glass Packages
Energy-efficient windows cost more upfront in Ontario, and most of that difference comes down to glass packaging. Double-pane glass is the Ontario standard: two panes with a sealed, gas-filled gap that deliver solid insulation at the lower end of the price range.
Triple-pane glass adds a third pane and a second gap, resulting in meaningfully better heat transfer. Triple-pane windows are increasingly popular for energy efficiency despite the premium over double-pane windows.
Low-E coatings push the value further: this microscopic metallic layer reflects heat back into your home in winter and blocks it out in summer, without noticeably dimming the natural light you get.
Before you decide, ask whether Low-E coatings and gas fills are standard or an upgrade. That detail affects your energy bills and your eligibility for ENERGY STAR certification and provincial rebates.
Energy-efficient windows in Ontario typically cost more upfront, but that extra cost is offset over time through lower energy bills and current rebate programs.
Other Factors That Impact Window Replacement Costs
Beyond window type, material, and glass package, a few other factors shape your final price: window size, installation difficulty, and energy efficiency.
Size
Larger windows cost more due to increased material and installation labour. Homeowners often widen window openings in dining rooms and living spaces to let in more natural light, but larger windows require more glass and structural support.
Consider your desired window size and the total number of windows when budgeting.
Installation Difficulty
The complexity of the window installation process affects the average cost of replacement windows. Your home's specific features will determine the final cost of the window installation.
Energy Efficiency
Energy-efficient windows incorporate special coatings and features, like Low-E coatings and triple-pane glass, that reduce heat gain in summer and heat loss in winter.
ENERGY STAR certification is one of the most reliable ways to verify a window’s energy-efficiency performance. Certified windows must meet defined, climate-zone-specific requirements for factors such as U-factor, solar heat gain, and air leakage, as determined by independently certified ratings.
Ontario Window Rebates for Homeowners
As of January 28, 2025, Ontario homeowners can benefit from the Home Renovation Savings Program, a new Ontario Government incentive to encourage energy-efficiency upgrades for homeowners renovating their homes. These window rebates are designed to make energy efficiency upgrades more affordable for homeowners across the province. This program offers:
- $600 for a home energy assessment
- $100 per ENERGY STAR-certified window and door
- Up to 30% back on eligible energy-efficient upgrades
Additionally, the Canada Greener Homes Affordability Program provides support to low- to median-income households, aiming to reduce energy bills through energy-efficient home improvements.
For more details on eligibility, visit our Window FAQ page.
Image Source: Gemini 2026
Tips to Save on Replacement Window Costs
A window replacement project can be a major investment, but there are several smart strategies that Ontario homeowners can use to keep replacement window costs manageable without compromising on quality. These are some practical ways to save:
- Bundle replacements: Replacing multiple windows, or windows and doors together, reduces installation labour costs per unit
- Choose standard sizes: Custom windows cost more; standard window size options offer better value
- Pick a simpler window style: Fewer moving parts lower both material and installation costs
- Opt for energy-efficient models: Leads to long-term energy savings and Ontario rebates
- Schedule off-season: Winter and fall offer competitive window installation pricing
FAQs About Window Replacement in Ontario
Key Takeaways
- Replacement window prices in Ontario range from $300 to $10,000 per window installed, depending on type and material
- Bay and bow windows are the most expensive window types, while fixed and picture windows tend to cost less
- Vinyl windows are the most affordable material option, while wood and aluminum windows cost more per window
- Triple pane windows and Low-E coatings raise upfront cost but can lower long-term energy bills
- Basement window replacement cost in Ontario runs higher for egress windows due to code-required opening sizes
- Ontario rebates, including $100 per ENERGY STAR window, can reduce the total cost of your project
Get a New Windows Estimate Today
Now that you have a good understanding of replacement window prices in Ontario, Clera Windows + Doors is ready to be your reliable ally throughout the entire window replacement process. With over 45 years of serving Ontarians, you can expect exceptional customer service from a family-run business that treats every homeowner like family.
With Clera, there’s no middleman, from manufacturing on Canadian soil to expert installations backed by a lifetime warranty. Our local installers are easy to reach if you ever need service after your windows and doors are installed, and our team can help you choose energy-efficient windows that qualify for Ontario government rebate programs, further boosting your savings.
Contact Clera Windows + Doors today for a free window installation quote, and let us guide you toward the perfect windows for your home.
Adam Kwasnicki
With over 16 years at Clera Windows and Doors, Adam brings a wealth of experience in home improvement, sales, and project management. Prior to becoming VP, he personally sold and managed more than $20 million in window and door replacement projects, building on a career that also spans residential and commercial painting, home renovations, real estate, and solar energy. Known for his consultative, no-pressure approach, Adam helps homeowners navigate product options, government incentives, and competitive quotes to find the best balance of design, performance, and budget. At Clera, he also mentors sales consultants, supports marketing initiatives, and assists with customer care and escalations. Outside of work, he has shared his passion for meditation as a teacher in recreation centres and gyms, and continues to volunteer his time to support others in personal growth.
