Ottawa Window Replacement

New Windows That Actually Stop the Drafts. Guaranteed.

NAFS-22 certified windows, full-frame installation, and a 1-Year Installation Guarantee on every project. Serving Ottawa homeowners from Kanata to Orleans.

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Bright Ottawa living room with new energy-efficient casement windows installed

Quick Answer

Window replacement in Ottawa starts from $600 per window installed for standard vinyl styles. Most casement and awning windows run $800 to $1,300 or more once glass package and configuration are factored in. Custom shapes, triple-pane glass, and premium hardware run higher. A full-home project of around 10 windows typically starts around $8,000, with most Ottawa homes landing between $10,000 and $18,000. Clearline uses full-frame installation with NAFS-22 and Energy Star certified Stage Windows, backed by a 1-Year Installation Guarantee.

What Makes These Windows Different

We install Stage Windows, a Canadian manufacturer whose products are built and certified for climates like Ottawa's. Here is what that means for your home.

NAFS-22 Certified

Canada's current performance standard for windows and doors, covering how they handle wind pressure, air infiltration, and water penetration. Stage Windows exceed it. Most budget brands do not meet it.

Energy Star Certified

According to Natural Resources Canada, replacing windows with Energy Star certified products saves Ottawa homeowners an average of 45% on energy costs. Every window we install qualifies.

Slim Profile, More Glass

Thicker vinyl walls mean the frame can stay narrow without sacrificing strength. In the same wall opening, a slim-profile Stage window gives you measurably more glass area than traditional bulky frames.

Low-E Glass and Argon Gas, Standard

Every window includes Low-E coating, a microscopic layer that reflects heat back inside in winter and blocks solar gain in summer. Argon gas fills the space between the panes, conducting 34% less heat than air.

These are not upgrades. They come standard on every window we install. Triple-pane glass adds a third chamber and cuts heat loss through the glass by up to 40%, worth it for older homes or large window areas.

Low-E coating standard
Argon gas fill standard
Triple-pane available
Cross-section cutaway of a Stage vinyl window corner showing multi-chamber PVC frame profile, double-pane insulating glass unit with Low-E coating, argon gas fill space between panes, and warm-edge spacer bar

Window Styles for Ottawa Homes

Every style is available in double or triple-pane glass. All include full-frame installation and a 1-Year Installation Guarantee.

Ottawa Favourite Ottawa's most popular style

Casement Windows

The crank-operated sash swings outward and presses firmly against the frame when locked. That tight seal is why casement windows outperform sliders in Ottawa winters. No gaps. No drafts. The same principle as a refrigerator door.

  • Compression seal closes out cold air completely
  • Full ventilation control, open as wide as you want
  • Multi-point Roto hardware standard
  • Available in single or combination configurations
White vinyl casement window with crank handle, sash swung open outward showing multi-point lock hardware and slim profile frame
Ventilation even in the rain

Awning Windows

Hinged at the top, opens outward from the bottom. You can leave an awning window open during light rain without water getting in. A practical advantage during Ottawa's unpredictable spring and fall weather.

  • Stays open in light rain for fresh air year-round
  • Compression seal performs well in cold weather
  • Stainless steel hinges included as standard
  • Slim profile available in the STG450 series
White vinyl awning window propped open at the bottom showing top-hinge mechanism and energy-efficient double-pane glass
Maximum light, maximum efficiency

Fixed & Picture Windows

No moving parts means the largest possible glass area and the best thermal performance of any window type. Often paired with casements on either side so you get the view without giving up ventilation.

  • Most glass area in the opening, more natural light
  • No mechanical parts to wear out or fail
  • Highest energy efficiency of any window style
  • Available in any size, standard or custom
White vinyl fixed picture window with slim frame profile and large unobstructed glass area, ideal for maximizing natural light
Classic look, easy cleaning

Single Hung Windows

The bottom sash slides up and tilts inward for cleaning from inside. The top sash is fixed. A classic profile that complements traditional Ottawa brick homes while meeting modern energy performance standards.

  • Bottom sash tilts inward for easy interior cleaning
  • Traditional profile suits older Ottawa homes
  • Cost-effective entry into hung window styling
  • Available in Prima and STG450 series
White vinyl single hung window with bottom sash tilted inward at cleaning position showing tilt latch mechanism
Both sashes open and tilt

Double Hung Windows

Both the top and bottom sash open independently and tilt inward for cleaning from inside. Useful for homes where ventilation from the top of the window matters, and where upper floor cleaning from inside is a priority.

  • Both sashes open independently for ventilation control
  • Both sashes tilt inward, no ladder needed for cleaning
  • Balanced lift system holds sashes open on their own
  • Available in Prima and STG450 series
White vinyl double hung window with lower sash tilted fully inward showing tilt-wash cleaning position and balanced sash system
Practical for limited exterior space

Single Slider Windows

One sash slides horizontally while the other is fixed. No outward swing means sliders work well alongside a deck, above a counter, or in a basement egress opening. The sliding sash lifts out completely for cleaning.

  • No outward swing needed outside the wall
  • Sliding sash lifts out for easy interior cleaning
  • Good value for secondary bedrooms and basements
  • Smooth operation on brass rollers
White vinyl single slider window with one sash open to center showing horizontal slide track and lift-out sash mechanism
Ventilation from both sides

Double Slider Windows

Both sashes slide horizontally toward the center. You can open either side independently or both simultaneously for maximum cross-ventilation. Both sashes lift out from the inside for cleaning without tools.

  • Both sashes slide open independently
  • Maximum cross-ventilation in wide openings
  • Both sashes lift out for easy interior cleaning
  • Good option for wide basement and utility openings
White vinyl double slider window with both sashes slid to center showing full double-slide mechanism and wide opening capability

Why We Only Do Full-Frame Installation

Two ways to replace a window. Only one of them holds up in Ottawa.

✗ Retrofit Installation

New window inserts inside the existing frame. Faster and cheaper upfront, but old insulation stays, drafts often persist, and glass viewing area shrinks. Most Ottawa homes reveal the problem within a winter.

✓ Full-Frame Installation

Everything removed to the stud. Old insulation replaced. New window sealed from scratch. The only method we trust enough to back with our 1-Year Installation Guarantee, and the only one that permanently eliminates perimeter drafts.

✓ 1-Year Installation Guarantee
✓ Vetted and Insured Installers
✓ Stage Manufacturer Warranty

Window Replacement Cost in Ottawa

Transparent starting ranges so you can plan before we visit. Exact pricing in your free consultation.

Sliders & Hung

From $600

per window, fully installed

Single and double slider, single and double hung. Price increases with glass package, size, and colour.

Most Popular

Casement & Awning

From $800

per window, fully installed

Ottawa's recommended style for primary living spaces. Compression seal, multi-point hardware standard.

Whole Home

From $8,000

around 10 windows

Most Ottawa homes land between $10,000 and $18,000. Depends on style, count, glass package, and scope.

Bay, bow, and custom shapes are quoted after your free in-home measurement. No obligation.

Window Replacement FAQ, Ottawa

How long does a window project take from start to finish? ▼
The in-home consultation and quote take about an hour. Windows are custom-fabricated after you approve the quote, which typically takes 6 to 10 weeks. Once your windows arrive, most whole-home installations take one full day. We install one opening at a time so your home stays sealed throughout.
Can windows be replaced in Ottawa winters? ▼
Yes. We install one window at a time, never leaving an opening exposed. The new window goes in before the next one comes out. In cold weather we use temporary insulation on any opening not immediately ready. Most homeowners notice no temperature change through the day.
What is the difference between double-pane and triple-pane windows? ▼
Double-pane windows have two glass layers with one sealed gas space between them. Triple-pane adds a third layer and a second gas space, cutting heat loss through the glass by up to 40% and nearly eliminating cold-surface condensation. Triple-pane costs approximately 15 to 25% more. We recommend it for older homes, large window areas, or anyone planning to stay long-term.
How do I know if I need full-frame replacement or just a retrofit? ▼
If your frames are soft, visibly damaged, or letting in drafts around the perimeter, retrofit is not the right solution, it inserts a new window inside a failing frame. Full-frame replacement strips everything to the stud and addresses the problem at the source. If you are not sure, we will tell you honestly during the free consultation.
What warranty comes with new windows? ▼
Every installation comes with our 1-Year Installation Guarantee. Stage Windows carry a separate manufacturer warranty: lifetime on vinyl frames, 20 years on insulating glass, and 15 years on hardware. Both warranties transfer to the next owner at no charge.

Ready for New Windows in Ottawa?

Free in-home consultation, transparent pricing, 48-hour response. No pressure, no obligation.