Commercial Greenhouses

Welcome to Harnois Greenhouses. We offer commercial greenhouses for custom projects, large and small, for market gardeners and horticulturists.

Designed by a team of engineers and agronomists, our crop-driven industrial greenhouses maximize light transmission, creating the optimal growing environment. We’ve been building greenhouses in Quebec for the past 65 years, so all our greenhouse structures have seen high winds and snow loads, providing growers peace of mind. Experience higher yields and profitability with our innovative greenhouse systems and designs made in Canada.

Benefits of Our Professional Greenhouse Systems

Minimalist Greenhouse Structure

The oval tubes from our commercial greenhouses provides the strongest structural integrity. This design allows for wider spacing between arches, resulting in increased light penetration.

Higher Air Volume

With a wider base and higher peak, our models provide a larger air volume. This leads to more stable temperatures in the greenhouses, ultimately resulting in higher yields.

Profitability

Growers gain peace of mind with an innovative greenhouse design that ensures higher yields and better crop quality. Combined with energy savings, this leads to increased profitability.

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Over 55 years of crafting commercial greenhouse custom projects

Our industrial greenhouses are engineered to meet the rigorous demands of commercial farmers, floriculture, and nurseries. These industrial greenhouses are constructed by Harnois, a greenhouse manufacturer located in Quebec, Canada, and they are designed to endure high wind loads and snow loads. Whether you aim to enhance your commercial farming operation, cultivate crops year-round, or extend your growing space, we offer custom commercial greenhouse projects

Freestanding Greenhouse

Gutter Connected Greenhouse

Tunnel Greenhouse

Venlo Glass Greenhouse

Commercial Greenhouse Horticulture Flowers
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Frequently Asked Questions on commercial greenhouse custom projects

We are aware that the purchase of a commercial greenhouse can raise many questions. That’s why we’ve put together a list of the questions most frequently asked by our potential customers. Whether you’re looking for information on our different models, customization options, the durability of our commercial greenhouse structures or the services we offer after installation, you’ll find clear, detailed answers here. Our aim is to provide you with all the information you need to make an informed decision and find the perfect greenhouse for your needs. If you have any further questions, please do not hesitate to contact us.

A commercial greenhouse is a structure designed for large-scale agricultural production, typically used by professional growers for the cultivation of crops, flowers, and plants. These greenhouses offer controlled environments to optimize growth and yield.

 

The most popular size depends on the grower’s specific needs. However, widths of 30 to 40 feet (9 to 12 meters) are commonly favored for balancing space efficiency and crop management.

We offer a variety of greenhouse models, including gutter-connected, multi-span, and freestanding designs, each suited for different crop types, climates, and operational needs.

Our greenhouses are known for their structural integrity, energy efficiency, and advanced climate control features. They allow for maximum light penetration, stable temperatures, and can withstand high wind and snow loads, leading to better crop quality and higher yields.

Selecting the right model depends on factors such as the type of crops you grow, climate conditions, available space, and automation requirements. Our team can help guide you in choosing the best solution for your operation.

Yes, our greenhouses can be fully customized to meet your specific needs, from dimensions and structure to climate control systems and ventilation options.

With proper maintenance, our commercial greenhouses can last 20 to 30 years or more, depending on the materials used and the environmental conditions they face.

The cost of building a greenhouse varies based on size, materials, and customization options. Contact us for a personalized quote based on your specific requirements.

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An integrated service for commercial greenhouse custom projects

Discover a full one-stop solution with our comprehensive range of commercial greenhouses. These greenhouses are designed to extend the growing season and maximize crop yield. Our team of specialists will manage your project from start to finish, providing a turnkey service that limits the number of workers on your site while ensuring your peace of mind. With our industry-leading after-sales service, you receive personalized support during and after construction, helping you capitalize on the extended growing season for optimum productivity.

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Technologies

We deliver greenhouses that are adapted to low-, mid- and high-tech . Find the one to meet your needs.
Our Technologies

Equipment

Our full range of equipment allows you to adapt your greenhouse to the type of crops produced.
Our Equipment