At InterHaus, we specialize in supplying and installing high performance European windows and doors engineered to exceed Canadian energy efficiency standards. Serving Ontario and across Canada, InterHaus delivers advanced glazing systems designed for superior thermal insulation, airtightness, durability, and long-term performance in cold climates.
As an official Internorm dealer in Canada, we offer Austrian-engineered high performance tilt and turn windows, lift-slide doors, and architectural glazing systems certified for Passive House and Net Zero construction. Internorm windows are internationally recognized for their industry-leading thermal performance, triple-pane glazing, insulated multi-chamber frames, and precision-engineered hardware that ensures exceptional airtightness and security.
In addition, we proudly supply high performance all aluminum windows and doors from leading European manufacturers including Reynaers and Schüco. These systems combine sleek, modern aesthetics with structural strength, making them ideal for contemporary homes, large glass openings, and demanding architectural applications requiring maximum performance and durability.
Whether it is a new construction or renovation, we deliver sustainable, future-ready solutions that blend form and function. From the initial design consultation to expert installation, we are committed to providing personalized service and technical excellence every step of the way. With a strong focus on precision, European quality, and customer satisfaction, InterHaus is your partner in building better, more efficient home.
Supply and professional installation across Canada, the USA, and internationally, with fully custom high performance window and door, tailored to your exact specifications.
Elevate your home with industry-leading European technology and the unmatched high performance of premium triple-pane windows and doors. European windows combine exceptional functionality with their versatile tilt and turn operation, allowing for wide openings, sleek floor-to-ceiling designs, and fully customizable shapes. Unlike casement, double-hung, or sliding windows, they offer superior architectural flexibility to suit any design vision. Our products deliver unmatched security and energy efficiency, meeting the most rigorous quality standards in both Europe and North America. Crafted in state-of-the-art production facilities and backed by the industry’s most prestigious certifications, our windows and doors are built for exceptional durability and long-lasting performance.

Europe’s No. 1 window brand | 100% Made In Austria

Known for slim profile, exceptional performance, and a timeless aesthetic in architectural aluminum systems.

A world leader in premium aluminum solutions, trusted for innovation, performance, and prestige
Though you may not realise it, our work is all around you. We have completed 100s of projects throughout Ireland/ Northern Ireland, both high profile and smaller but equally important schemes… from Donegal, Derry-Londonderry and Antrim to Wexford, Waterford and Cork.
Posted on Christiane BrillantTrustindex verifies that the original source of the review is Google. Absolutely incredible windows, best out there, and Interhaus has been a pleasure to work with. They « saved » us after a bad experience with another windows company, and I just wish we had found them from the beginning. Seamless process with them, excellent communication throughout. A++ competent and efficient installers. Highly recommend if you’re looking for high quality windows and amazing customer service.Posted on Craig RaceTrustindex verifies that the original source of the review is Google. My preferred window supplier for any of our projects with ambitious sustainability or indoor comfort goals. They have been easy to work with, and responsive when I need a problem solved. Internorm products have served me well, and these are the best, most reliable suppliers I have found in eastern Canada.Posted on Anastassiya MandrichenkoTrustindex verifies that the original source of the review is Google. Absolutely thrilled with our new windows and doors from InterHaus! The quality is exceptional, and the energy efficiency has made a noticeable difference in our home! Viktoriya and Alex were professional, helpful, and made the entire process effortless. The installation was smooth, and the final result completely transformed our space. Couldn’t be happier—highly recommend!Posted on Alen BubicTrustindex verifies that the original source of the review is Google. This was a VIP experience from start to finish. Fast, friendly and effective service. It really helped that Vik is an architect, she was able to guide us through the entire process and coordinated directly with our designer. The windows are top-notch, but the service was better than the product.Posted on Bruno RachieleTrustindex verifies that the original source of the review is Google. Excellent windows and doors for noise and heating and cooling. We had to install new windows in some rooms in our old house and the difference between these ones and our old ones was obvious right away, no condensation in the winter, much quieter in summer (we had very noisy neighbours), very little heat loss so the rooms were warmer in winter and cooler in summer. We were so impressed that we installed them throughout our new house. Viktoryiya was so easy to work with, and the installation was excellent and problem free! Bruno & Evelyn
Looking for high performance European windows and doors in Canada? InterHaus Premium Windows and Doors team is here to assist homeowners, architects, builders, and developers with expert consultation, technical guidance, and project support.
We proudly serves clients throughout Ontario and across North America, delivering industry-leading high performance European windows and doors designed for superior energy efficiency, acoustic comfort, and long-term durability.
Have a question? Send us a message, and our expert team will respond promptly to help you discover how our advanced fenestration systems can enhance your home’s comfort, energy efficiency, and architectural performance.
Download the official Internorm brochure to explore one of the world’s leading manufacturers of high performance European windows and doors. Internorm is an Austrian company with over 90 years of innovation, known globally for producing advanced window and door systems designed for superior energy efficiency, thermal insulation, and architectural performance.
The Internorm brochure provides detailed information about their full range of high performance windows and doors available in Canada. Each product is engineered to meet the highest European standards, including Passive House certification, making Internorm an ideal choice for energy-efficient homes, Net Zero construction, and modern architectural projects.
Our Internorm catalogue includes comprehensive technical and design information, such as:
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