Passive House Windows Canada | InterHaus
Passive House windows represent the highest level of energy efficiency available in modern construction. Designed to minimize heat loss, eliminate drafts, and maximize indoor comfort, Passive House windows are essential for achieving Passive House, Net-Zero, and high-performance building standards.
At InterHaus Premium Windows & Doors, we supply and install Passive House-capable Internorm, Schuco and Reynaers window systems across Canada, including Greater Toronto Area, Muskoka area, Halton area and across whole Ontario . Engineered in Europe and optimized for cold climates, our windows deliver exceptional thermal insulation, airtightness, and long-term durability.
Whether you are building a Passive Home in Toronto, designing a Net-Zero home in Ontario, or upgrading your existing property, InterHaus provides certified Passive House window solutions tailored to Canadian conditions.
Internorm windows and doors by InterHaus offer a comprehensive range of high-performance, triple-pane window and door systems engineered to meet and exceed Passive House (Passivhaus) standards. Designed for both new construction and renovation projects, these European-engineered systems deliver exceptional thermal insulation, superior airtightness, and outstanding long-term energy efficiency. With advanced Austrian technology and extensive design flexibility, Internorm solutions provide architects, builders, and homeowners in Ontario and across Canada with premium energy-efficient windows and doors that combine modern aesthetics with industry-leading performance.
What Are Passive House Windows?
– are high-performance windows specifically engineered to meet the strict energy efficiency requirements established by the Passive House Institute (PHI) in Germany. These windows dramatically reduce heat transfer, allowing buildings to maintain stable indoor temperatures with minimal reliance on mechanical heating or cooling.
Unlike conventional double-pane or standard triple-pane windows, Passive House windows incorporate advanced technologies such as multi-chamber insulated frames, triple or quadruple glazing, warm-edge spacers, and continuous airtight sealing systems.
Passive House windows typically achieve U-values as low as 0.65 W/m²K, compared to standard North American windows, which often range from 1.2 to 2.0 W/m²K. This superior performance significantly reduces heat loss during Canadian winters while maintaining comfort year-round.
By installing Passive House windows in Canada, homeowners can reduce energy consumption, improve indoor comfort, and increase long-term property value.
Passivhaus Benefits
Why Passive House Windows Are Critical in Canada’s Climate
Canada’s harsh winters and extreme temperature fluctuations make high-performance windows essential for maintaining energy efficiency and indoor comfort. In provinces such as Ontario, where winter temperatures frequently drop below –20°C, poorly insulated windows can cause significant heat loss, drafts, and condensation.
Passive House windows are specifically designed to perform in cold climates like Canada. Their superior insulation keeps interior glass surfaces warm, preventing condensation and cold radiation. This allows homeowners to sit comfortably near windows even during extreme winter conditions.
Additionally, Internorm by InterHaus windows help reduce heating demand, allowing furnaces and heat pumps to operate more efficiently. This results in lower energy bills, improved comfort, and reduced environmental impact.
For Canadian homeowners, builders, and architects, Passive House windows are a critical component of any high-performance building envelope.
Passive House Windows vs Standard Triple Pane Windows
While many North American homes use triple-pane windows, not all triple-pane windows meet Passive House standards. Our windows are engineered with significantly stricter performance requirements.
Standard triple-pane windows typically have U-values between 0.9 and 1.4 W/m²K. In contrast, Passive House windows achieve U-values below 0.8 W/m²K, providing substantially better insulation.
Passive House windows also offer superior airtightness, improved frame insulation, and higher overall thermal performance.
For homeowners seeking the highest level of performance, our windows are the superior choice.
Passive House Windows FAQ
What qualifies as a Passive House window?
PH windows must meet strict thermal insulation and airtightness standards defined by the Passive House Institute.
Are Passive House windows worth it in Canada?
Yes. PH windows significantly reduce heating costs and improve indoor comfort, especially in cold climates like Ontario.
What is the U-value of Passive House windows?
PH windows typically achieve U-values between 0.64 and 0.80 W/m²K.
Do Passive House windows reduce condensation?
Yes. Their superior insulation keeps interior glass surfaces warmer, preventing condensation.
Passive House Window Systems available at InterHaus
At InterHaus is a Passive House window supplier offerings systems such as Internorm, Schüco, and Reynaers, engineered to meet the strict thermal and airtightness requirements of Passive House construction in Canada.
These European systems are independently tested and certified to deliver exceptional performance in cold climates such as Ontario and across Canada.
Ideal Applications
Passive House certified windows are recommended for:
- Passive House certified homes
- Net Zero homes
- High-performance custom homes
- Multi-unit residential buildings
- Luxury residential construction
- Cold and cool climate construction in Canada
Particularly valuable in Ontario’s climate, where heating and cooling costs is high.
Why Choose InterHaus for Passive House Windows
InterHaus Premium Windows & Doors is a trusted supplier of European Passive House window systems in Canada.
We offer:
- Passive House Institute certified window systems
- Austrian-engineered Internorm windows
- Local warehousing in Ontario
- Technical support and consultation
- Installation guidance and supervision
- Support for architects and builders
- Service throughout Ontario and Canada
- Architectural background of our product specialists
Our experience allows us to provide solutions tailored to Canadian climate and construction practices.
Internorm KF 410 – PHI Certified uPVC-Aluminum
The Internorm KF 410 window system designed specifically for ultra-low energy buildings.
This system combines a thermally insulated uPVC core with durable aluminum exterior cladding, delivering outstanding thermal performance and long-term durability.
Key performance features:
- U-values as low as 0.62 W/m²K (depending on configuration)
- Multi-chamber insulated uPVC profile
- Triple continuous compression gaskets for superior airtightness
- Triple-pane glazing with argon or krypton gas fill
- Excellent condensation resistance in cold climates
The KF 410 is one of the most proven PH window systems available in Canada and is widely used in Passivehaus and Net-Zero construction.
Schüco AWS 90.SI+ – PHI Certified All Aluminum
The Schüco AWS 90.SI+ is a thermally optimized aluminum window system certified for PH applications when configured appropriately.
Unlike conventional aluminum windows, the AWS 90.SI+ incorporates advanced thermal breaks and insulated profile chambers to achieve Passive House performance.
Key performance features:
- Passive House Institute certified configurations available
- Uw values reaching Passive House standards
- Advanced thermally broken aluminum frame
- Exceptional structural strength for large architectural openings
- Ideal for modern and luxury architectural design
This system is particularly well suited for high-end residential and commercial Passivhaus projects requiring slim aluminum profiles and maximum durability.
Reynaers MasterLine 10 – PHI Certified All Aluminum
The Reynaers MasterLine 10 is a next-generation aluminum window system designed specifically to meet PH performance standards.
This system combines architectural flexibility with advanced insulation technology, making it ideal for modern Passive House construction.
Key performance features:
- Passive House certified configurations available
- Uw values suitable for Passive House climate zones
- Advanced thermal insulation technology
- High structural stability for large glazing areas
- Slim aluminum profiles for contemporary architecture
MasterLine 10 provides the aesthetic advantages of aluminum while maintaining the thermal performance required for Passivhaus buildings in Canada.
Building a Passive house home? Get a Quote within 72h:
If you are planning a PH, Net-Zero or high-performance home in Canada, InterHaus Premium Windows & Doors can help you select the ideal Passivhaus window system for your project.
Contact InterHaus today to learn more about Internorm PH windows available in Ontario and across Canada.
We service with supply and install the following areas:
Toronto
Oakville
Milton
Mississauga
Burlington
Hamilton
GTA
Halton
Niagara-on-the-Lake
Muskoka
Kingston
Ottawa
Ontario
and Canada-wide
