About Us

Building intelligence, a human approach.

OPNEX is a Quebec-based company specializing in automatic building control, offering intelligent HVAC system management solutions. Through in-depth technical expertise and a collaborative approach, we transform building performance while simplifying their operation.

We primarily serve the commercial, institutional, multi-residential, and industrial sectors in the province of Quebec. Our name—derived from the terms Optimization and Nexus—reflects our mission: connecting cutting-edge technologies to your performance, sustainability, and comfort goals.
Our Mission

To provide building automation solutions that help:

  • Increase energy efficiency,
  • Reduce carbon footprint,
  • Ensure optimal occupant comfort,
  • And promote proactive and sustainable management of real estate assets.

We aim to raise industry standards through technological innovation, operational excellence and outstanding customer service.

Our team

OPNEX is led by two engineering partners: François Guillemette , Sales Director, and Louis-Nicolas Brassard , Operations Director. Together, they have over 30 years of experience in building mechanics, automation, and the management of large-scale technical projects. Their leadership is strengthened by active involvement in the professional ecosystem, particularly within ASHRAE. Our team also relies on a network of trusted partners, such as ABB, Belimo, Greystone, and Cristal Controls, to design and deliver reliable, scalable, and seamlessly integrated systems.

Our Values
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Expertise

We showcase our expertise through the quality of our designs, the precision of our installations and the relevance of our interventions, even in the most complex environments.

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Innovation

We combine creativity with cutting-edge technologies to design solutions that are efficient, scalable and adapted to the market’s evolving needs.

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Integrity

Every decision and every action is guided by transparency, honesty and respect for our commitments.

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Collaboration

We believe the best projects are built through close partnerships with our clients, suppliers and collaborators. Together, we strive for excellence.

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Well-Being

Because a fulfilled team is the driving force behind our success, we foster a healthy, stimulating work environment that supports both personal and professional growth.

Are you looking for a trusted partner?