Commercial Greenhouses Structures Designed for Predictability
Built for Canadian & American Growers: Greenhouses That Perform Year-Round
Looking for a top-tier greenhouse in Canada or USA? Harnois Greenhouse designs and manufactures high-performance commercial greenhouses engineered for Canadian & Northern USA climates. Trusted by growers across both countries, our greenhouse structures are built for durability, energy efficiency, and scalable growth—making us a leading choice for greenhouse Canada solutions.
Commercial greenhouses structures come in a variety of designs and structures to meet the diverse needs of growers. From glass and polycarbonate greenhouses to high tunnels and gutter-connected models, Harnois structures provide optimal growing environments for a wide range of crops. Advanced climate control, irrigation systems, and energy-efficient materials enhance productivity while ensuring consistent yields. Whether for vegetable, flower, or hydroponic production, commercial greenhouses structures offer customizable solutions to maximize efficiency and profitability.
Boost your yields with Harnois, a trusted partner in top-tier commercial greenhouses structures and turnkey solutions. Engineered for today’s commercial growers, our durable structures and our greenhouse equipment team help your operation thrives and delivers a quick ROI. Looking to optimize your growing environment? Work with Harnois for tailored expertise and exceptional results. Let’s start building tomorrow’s controlled environment agriculture (CEA)—reach out today!
Whether in floriculture, produce, a garden center, an institution, or you want to transition from open-field farming, Harnois Greenhouses provides the expertise to match you with the perfect turnkey greenhouse solution. Discover our diverse range of greenhouse structures to elevate your growing operation.
Commercial Greenhouses Structures
Thoughtfully Designed, Proven ROI
At Harnois, we believe that success in greenhouse operation starts with precision. That’s why we go beyond just building structures—we engineer solutions that optimize light transmission, durability, and efficiency to maximize your return on investment.
Optimized Roof Angles
The gothic arch structure features optimized roof angles designed to maximize light penetration, enhancing plant growth and yield.
Oval graded steel tube
Wider arch spacing reduces foundations for easier installation and increased light exposure, while the edge-free design extends the poly film's lifespan and provides superior strength and optimized resistance.
Design
Engineered for simplified installation with a certified engineer-stamped structure, always designed for a brighter future.
Corrosion-Resistant Components
Nuts and bolts undergo rigorous corrosion testing with certified suppliers, while pre-galvanized steel tubes with Galvalume ensure durability and longevity.
Precision Assembly
Drilling in the neutral axis preserves structural integrity, minimizing the need for self-drilling screws and on-site drilling, while greenhouse assembly utilizes bolted connections and swedged tubes for enhanced durability.
Easy Installation
Designed for fast and easy installation, this aesthetic product ensures hassle-free setup and maintenance.
High-Performance Covering
Featuring multi-layer technology with anti-dripping properties, this high-strength 7.2 mil film allows 90-91% light transmission, ensuring longevity as the longest-lasting anti-drip solution,
Snow & Wind Resistance
Engineered and manufactured in Canada for superior snow and wind resistance, ensuring durability and stability in harsh weather conditions.
Why Harnois Is a Leading Greenhouse Manufacturer in North America
With over 60 years of expertise, Harnois is recognized as one of the top greenhouse manufacturers in Canada. Our commercial greenhouses structures are designed for Canadian growers who need structures that can withstand extreme weather, optimize crop yield, and integrate seamlessly with automation technology.
Discover how growers across Canada are using Harnois greenhouses—from Quebec to Ontario to British Columbia—to increase production and extend their growing season.
FAQ on Commercial Greenhouses Structures
Commercial greenhouses structures are large-scale growing structures designed to create optimal environmental conditions for crop production, regardless of external weather. Engineered to maximize space, light diffusion, and energy efficiency, these structures support a wide range of crops and agricultural practices—from year-round vegetable production to specialty flowers and organic farming. Unlike hobby or backyard greenhouses, commercial greenhouses are built for durability, scale, and profitability.
Commercial greenhouses serve multiple industries and growing objectives, including:
Horticulture and Floriculture: Ideal for growing flowers, ornamental plants, and nursery products.
Vegetable and Fruit Production: Allows for controlled cultivation of tomatoes, cucumbers, peppers, strawberries, and leafy greens.
Organic Farming: Offers a protected environment to meet organic certification standards.
Research and Education: Used in academic institutions for controlled experiments and teaching.
Pharmaceutical and Cannabis Production: Enables precise climate control for high-value crops requiring strict regulation.
These greenhouses can be tailored to fit both high-tech and low-tech growing models, with options for automation, climate zones, and renewable energy integration.
At Harnois, we use only high-quality components that ensure performance, longevity, and ease of maintenance:
Galvanized Steel Frames: Engineered for snow and wind loads in North American climates, with optional hot-dip galvanizing for maximum corrosion resistance.
High Light Transmission Coverings: Choose from multiwall polycarbonate or high-performance polyethylene film to enhance photosynthesis while reducing heat loss.
Ventilation Systems: Natural ridge vents, sidewall roll-ups, and mechanical fans maintain airflow and reduce humidity.
Shading and Climate Curtains: Optimize light levels and temperature to reduce energy costs and boost crop yield.
Irrigation & Fertigation Systems: Integrated solutions for precise water and nutrient delivery.
These components are customizable based on your crops, climate, and automation needs.
Choosing a Harnois commercial greenhouse brings a host of operational and financial advantages:
Year-Round Production: Extend the growing season or produce crops continuously, regardless of outdoor conditions.
Increased Yields: Controlled environments lead to healthier plants and higher productivity per square meter.
Reduced Input Costs: Optimized irrigation, energy use, and climate control lower water, fertilizer, and heating expenses.
Improved Biosecurity: Protect crops from pests, diseases, and contamination.
Faster ROI: Reliable structures and efficient systems help you reach profitability sooner.
Our greenhouses are designed to evolve with your business, offering expansion-ready structures and scalable technologies.
Harnois offers a complete range of engineered commercial greenhouse models tailored to your needs:
Vermax Glass Greenhouses: A premium solution for high-efficiency production and advanced climate control, ideal for producers aiming for Nearly Zero Energy Buildings (NZEB).
Ovaltech High Tunnel Greenhouses: Durable, economical, and modular—perfect for soft fruit production, seasonal crops, or organic farming.
Custom Engineered Greenhouses: Designed in-house to meet local codes, site-specific climate conditions, and crop requirements.
All our structures are manufactured and sourced in Canada, built with decades of experience in agricultural innovation. Our team of engineers and agronomists supports you from project design to post-installation optimization.
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