Leading Commercial Greenhouse Solutions
Harnois builds high tunnels & commercial greenhouse solutions, creating unique growing environments that provide professional growers with greater predictability.
Our commitment
Redefining the standards of​ CEA
At Harnois Greenhouses, sustainability lies at the heart of every commercial greenhouse solutions we create. We design greenhouses and develop technologies that address today’s needs while preparing for tomorrow’s challenges. Our solutions minimize environmental impact while maximizing productivity, combining innovative technology with durable materials for long-lasting performance.
- 60 years of industry experience
- A true turnkey solution: Form design to completion
- Spearheading Greenhouse Innovation in North America
- In-house team of Engineers and Agronomists
Our commercial greenhouse solutions provide a sustainable path forward, from energy-efficient designs to materials that optimize natural light and conserve resources. In partnership with growers who share our vision, we are helping to build a resilient agricultural sector, one greenhouse at a time.
Our mission is to enhance predictability, efficiency, and sustainability in agriculture, paving the way for a more resilient future.
Solutions & Services
Leading Commercial Greenhouses
Greenhouse Design & Manufacturing
- High Tunnel Greenhouses
- Freestanding Greenhouses
- Gutter-connected Greenhouses
- Glass Greenhouses
Greenhouse Equipment
Greenhouse Equipment
Greenhouse Installation
Greenhouse Installation
Explore Recent Projects
From supporting commercial growers to celebrating agribusiness on a global scale, we’re proud to share some of our turnkey greenhouse projects with you.
Consult our experts
Every grower’s success begins with the proper greenhouse structure and support. Whether expanding your greenhouse, optimizing your production, or starting a new project, we’re here to help you create the perfect environment for your crops to thrive. Reach out to us today—your success is our priority.