Why Isothermic?

Our products manufactured by skilled tradespeople and installed by certified installers undergo rigorous testing under extreme conditions to prove their efficiency and durability.

Isothermic offers energy-efficient doors and windows designed to make your home more comfortable and bring energy costs down. Did you know that you may be eligible for a government grant if you choose these solutions for your renovations?

Isothermic has been part of CAA-Quebec’s Network of Approved Suppliers for years. This stamp of approval is based on very rigorous criteria that attest to a company’s expertise, credibility, and reliability.

There’s more to Isothermic products than their reputation for excellence—they also come with a robust guarantee for your peace of mind.

When you go with Isothermic, you also get the support of our qualified team that receives continuous training to stay abreast of the latest developments in materials, components, and National Building Code of Canada standards.

Isothermic’s certification program is the only of its kind in the industry. Our certified installers have completed the latest training on the A-440 national standard (which governs installation and replacement procedures for windows and doors), as well as mandatory training on our products and our high expectations—all to provide you with the best possible service and highest-performing products available.

Our exclusive after-sales service was designed to keep you informed from the time you place your order and through every stage in the process. SAV+ covers four key project phases: getting started, project assessment, repair or replacement, and follow-up.

We could tell you about the flawless quality of our doors and windows, the professionalism of our team, the effectiveness of our service—but we’d rather let our valued customers speak for us!