Consumer Choice Award
Barrie 7-Time Winner
Independently verified credentials, reader polls, and customer satisfaction honors across Ontario.
Limited Time Offer
Up
to25%Off
Windows & Doors
FREE Colour Upgrade*
orFREE Triple Glass Upgrade*
* Some conditions apply. Offer ends December 31, 2026.
Windows That Last
Enjoy year-round comfort and real savings with our expert window replacement service in Ontario. We install high-quality energy-efficient windows in Ontario that improve insulation, block UV rays, and help balance your home’s temperature all year long. With modern designs and energy-saving features, our replacements bring down heating and cooling costs, without sacrificing style.
Real Stories, Real Satisfaction
See how our installers replace old windows with energy-efficient ones, and what a new window changes in a home.
Window installs built for beauty and performance, raising comfort and home value.
How replacing old windows and doors lowers energy bills.
Stylish, energy-efficient replacement windows and why quality matters.
A new window performs only as well as the opening it goes into. This is how our installers handle replacement and installation in Ontario.
Most window projects in Ontario are replacements. We start with an in-home assessment: every opening is measured, the frames and sills are checked for rot or water damage, and we recommend insert replacement, which keeps a sound existing frame, or full-frame replacement, which takes the opening back to the studs so it can be inspected, insulated and re-flashed.
On installation day the old sash and frame come out, the new window is set level, plumb and square on shims, and the gap around it is filled with low-expansion foam. Outside, the perimeter is sealed and finished with aluminum capping or trim; inside, it is trimmed and caulked so there are no drafts at the edges. The old windows leave with us.
Window installation covers new openings, additions, basement egress windows and new builds in Ontario. A new opening needs a properly framed rough opening, a sloped sill pan and self-adhered flashing membrane lapped in the right order, so any water that gets behind the siding or brick is sent back out.
Where a basement bedroom needs an egress window we size it to the Ontario Building Code, and we confirm before work starts whether cutting or enlarging the opening needs a permit.
Every project starts with a free in-home estimate. Book a Free Estimate
Drag the slider to see old, drafty windows replaced with energy-efficient ones. Planning window replacement in Ontario? Start with a free in-home estimate.


Brampton, ON


Mississauga, ON






Brampton, ON


Windows Built to Last
Knowing when to schedule a window replacement service can save you from costly damage and improve your home’s efficiency. Here are the most common signs Ontario homeowners should look for before booking a residential window replacement.

Engineered with multi-chambered, fusion-welded frames, vinyl windows provide superior thermal insulation, UV resistance, and low maintenance. Available in multiple styles, they’re ideal for residential window replacement projects.
Read more about our vinyl windows.
Our energy-efficient windows feature advanced Low-E coatings, triple-glazed units, and airtight seals. They exceed ENERGY STAR® standards, offering outstanding U-values and Solar Heat Gain Coefficients for long-term utility savings.
Read more about our energy-efficient windows.
Windows, Your Way
We offer high-performance window replacement solutions built for every home. Whether it’s glass, screens, or full units, Panorama Windows & Doors helps improve your comfort, energy efficiency, and resale value.
Built for Ontario
From classic to modern, we offer versatile replacement windows built for Ontario homes. Each style enhances energy efficiency, airflow, and curb appeal. Some of our most popular window styles include:
Ideal for basements and bathrooms, our awning windows feature top hinges for ventilation even during rain. These Low-E, triple-pane IGU units with insulated vinyl frames are a smart choice for residential window replacement projects seeking durability and airflow.
Explore Awning WindowsLooking for more light without airflow? Our fixed picture windows are perfect. Designed with energy-efficient glazing and Low-E glass, they offer great views and thermal protection, ideal for home window replacement where airflow isn’t a priority.
Explore Picture WindowsSlider windows glide horizontally using dual brass rollers and Insta-Lok locking. They’re great for tight spaces, offering smooth operation and energy efficiency with triple-seal weatherstripping and argon gas-filled chambers.
Explore Slider WindowsBest suited for wide openings, end vent sliders feature a fixed centre with sliding panels on either side. With full screens and double-pane Low-E glass, they’re popular in newer homes for their ventilation and modern look.
Explore End Vent Slider WindowsBoth sashes in our double hung windows tilt inward for easy cleaning. Great for bedrooms, they come with a spiral sash balance system, Low-E glass, and optional full screens. Multi-chambered vinyl frames increase insulation and sound dampening.
Explore Double Hung WindowsSingle hung windows are a budget-friendly option for home window replacement. The lower sash opens vertically while the upper remains fixed. Each unit features a half screen, argon gas fill, and insulated vinyl frame for dependable performance.
Explore Single Hung WindowsOur fixed casement windows don’t open but offer wide, panoramic views. Designed with high-efficiency IGUs, Low-E coatings, and insulated vinyl profiles, they pair perfectly with operable casements or sliders to complete any room.
Explore Fixed Casement WindowsCasement windows open outward via side hinges for max ventilation and a tight seal. With multi-point locks, triple-pane Low-E glass, and air-tight compression seals, they’re ideal for main floors and energy-conscious homeowners.
Explore Casement WindowsOur bow windows add charm and dimension to any room. With multiple operable and fixed units arranged in a curve, they enhance curb appeal and natural light, ideal for replacement windows in large living areas or front-facing rooms.
Get a Free Bow Window ConsultationTriple pane windows offer excellent insulation with three layers of Low-E glass and dual argon or krypton gas fills. They excel in Ontario’s climate, reducing energy loss, condensation, and exterior noise, perfect for cold winters and busy streets.
Explore Triple Pane WindowsLow E-windows use spectrally selective coatings that reflect infrared heat while allowing visible light. Combined with argon gas and thermal spacers, they reduce solar heat gain and improve insulation, important for windows replacement Ontario.
Explore Low E-WindowsSave up to 25% on replacement windows and doors, plus choose a free colour or triple glass upgrade.*
Free in-home consultation · No obligation
* Some conditions apply. Offer valid on eligible products and ends December 31, 2026.

Windows Built to Last
Built for Canadian weather, our replacement windows combine precision engineering and advanced materials to deliver high-quality energy savings, comfort, and value. Here are the stand-out features of our windows:

Every room in your home has unique needs. Our custom-fit replacement windows deliver the right balance of light, privacy, ventilation, and energy efficiency.
Empowering Your Home with Energy Wisdom
Our high-performance windows are built for Canadian weather, keeping your Ontario home warm in winter and cool in summer. With triple-pane glass, Low-E coatings, and argon gas, you’ll enjoy comfort, savings, and lasting value all year round.
Up to
25%
Of a home's total heat loss occurs through its windows
Windows with
3panes
Of glass are the most energy efficient models on the market
Energy Usage
60%
Of energy used in an average Canadian home
Low-e coated windows can reflect up to
96%
Of heat and light engergy
Using argon gas can improve insulation by approximately
30%
Of heat and light engergy
Low-e coated windows can stop
84%
Of uv penetration
The Panorama Difference
We offer top-quality window replacement service backed by expertise, reliable products, and local trust. This is why homeowners choose us for windows replacement Ontario.
As one of the best window replacement providers in Ontario, we’ve earned industry recognition for our dedication to quality, efficiency, and exceptional customer service. From residential window replacement to custom installs, we bring award-winning results every time.
Since 2015, we’ve handled every type of installation, from energy upgrades to full-house window replacement. Our experience sets us apart from other window replacement companies in Ontario.
Our trained installers follow CSA-approved methods and energy efficiency standards. Whether it’s window and screen replacement or full-frame installs, trust our team to deliver flawless, professional window replacement service.
We’re a highly rated window replacement company with hundreds of positive reviews and referrals. Search any window replacement Ontario reviews, and you’ll find local homeowners praising our honest work, reliable timelines, and clean installs.
We install replacement windows with Low-E coatings, triple-pane options, argon gas fills, and insulated frames to help Ontario homeowners lower energy bills and boost performance, key for long-lasting home window replacement.
Upgrading with a trusted window replacement company should be simple. That’s why we offer flexible financing and no-interest plans, making home window replacement affordable without compromising quality or timeline.
Every residential window replacement we install is backed by a robust warranty on both product and labour. As a reputable window replacement company, we’re here long after the job’s done, ready to support you whenever needed.
Transparency is key. Our team provides detailed written estimates that include material, labour, and any disposal fees. Unlike some window replacement companies, there are no hidden charges, just honest service.
We don’t leave until you’re happy. From in-home consultation to final inspection, our goal is total satisfaction. That’s why so many Ontario families say we’re their go-to for < a href="/projects/">windows replacement projects done right.
Invest in Your Ontario Home
Choosing modern replacement windows is one of the best upgrades you can make. Here are the top reasons you should never hesitate to invest in new windows:
We believe in honest, upfront pricing. Below are typical price ranges for our most popular window and door styles.
| Window Type | Avg. Price Min | Avg.Price Max |
|---|---|---|
| Bay/Bow | $1,800 | $6,600 |
| Casement | $600 | $1,520 |
| Awning window | $600 | $1,615 |
| Sliding window | $600 | $2,090 |
| Single hung window | $600 | $2,090 |
| Double Hung Window | $600 | $2,090 |
| Picture Window | $600 | $2,850 |
| Egress Window | $700 | $945 |
Besides Ontario, our crews handle window replacement in these Ontario cities, with a free in-home estimate in each one.
We replace every one of these window styles in Ontario and across Ontario. Compare them all on our window styles for Ontario homes page, or read about window installation in Ontario.
Top-hinged windows with triple-pane Low-E glass and full-perimeter seals.
Crank-out windows with multi-point locks and fusion-welded vinyl frames.
Classic two-sash windows with tilt-in sashes for easy cleaning.
A wide centre view with sliding vents at each end.
ENERGY STAR® Zone 3 certified glass and frames that cut heat loss.
Non-opening casement-style units with argon-filled Low-E glass.
Coated glass with warm-edge spacers for year-round comfort.
Large fixed panes for open views and natural light.
A budget-friendly style with a fixed top sash and a sliding bottom sash.
Side-to-side sliding windows for wide openings.
Two sliding sashes for cross-ventilation.
One fixed and one sliding sash, with tilt-in cleaning.
Three panes of glass for top insulation and sound control.
Low-maintenance multi-chambered vinyl frames with Low-E glass.
Look for a company that measures and installs with its own crews, gives a written quote, explains the manufacturer and labour warranties, and has reviews you can read. Panorama Windows & Doors has served Ontario homes since 2015 and has more than 1,000 reviews on Google, HomeStars and other platforms. Our guide on choosing a window replacement company in Ontario lists the questions to ask.
Yes. Window replacement swaps an old window for a new one in the same opening; window installation covers new openings, larger openings and basement egress windows. Both come with a free in-home estimate.