Commercial Greenhouses, Structures & Equipment
Harnois Greenhouses designs and manufactures engineered commercial greenhouses built specifically for Canadian and Northern U.S. climates. Trusted by growers across both countries, our engineered greenhouse structures are built for durability, energy efficiency, and scalable growth; making us a leading choice for greenhouse solutions.
Commercial greenhouse structures come in a variety of designs and structures to meet the diverse needs of growers. Advanced climate control, irrigation systems, and energy-efficient materials enhance productivity while ensuring consistent yields. Whether for vegetable, flower, or hydroponic production, commercial greenhouse structures offer customizable solutions to maximize efficiency and profitability.
Commercial Greenhouse Models
High Tunnel Structure
Ideal commercial greenhouse structure for small fruits growers (strawberries, raspberries, blackberries and blueberries) and open-field farmers
- Extended growing season
- Better Yield. Better Quality
- Better Climate, Healthier Crops
- Grow More, Spend Less
Freestanding Greenhouse
Ideal commercial greenhouse structurefor growers looking for a durable and versatile commercial greenhouse structure.
- Designed to meet local snow-load greenhouse design requirements, as well as wind and seismic loads.
- Pre-drilled structural-grade steel ensures superior strength and fast installation.
- The Ovaltech can be used as a four-seasons greenhouse or as a cold-frame structure
- Optional webbed trusses integrated into the bows
Why Oval Tube Greenhouse Structures Outperform Traditional Designs
exclusive
oval tube
The strength of Harnois’ engineering relies on close collaboration between its engineers and an experienced team of horticultural experts. Together, they create specific solutions for each project, balancing the requirements of the projected crop, the site’s climate constraints, and the grower’s financial expectations.
At Harnois, our exclusive oval tube framing isn’t just stronger; it’s also more durable. Stronger by design, oval tubes allow for fewer arches, less steel, and faster installation; saving you time, labor, and materials.
The result? A high-performing structure that delivers real-world ROI from day one.
Stronger by Design
Oval tubes offer superior load resistance with less steel, resulting in increased strength, reduced material usage, and enhanced efficiency.
More Space, More Stability
The wider and taller profile increases internal air volume, helping maintain more stable temperatures for your crops.
Gothic Arch = Peak Light Performance
The optimized roof angle, combined with high-performance polyethylene, delivers up to 90–91% light transmission. The steep slope also helps shed snow efficiently and minimize condensation, protecting both your structure and your plants.
Fewer Arches, Brighter Greenhouse
A stronger tube allows you to space arches farther apart, providing more open growing space and fewer shaded areas.
Longer Cover Lifespan
The smooth, continuous shape of our oval tubing reduces wear on the commercial greenhouse structure covering, minimizing stress points and extending the lifespan of your film over time.
Gutter Connected Greenhouse
Ideal commercial greenhouse structure for growers looking for a structure that maximizes growing space and profitability while optimizing natural light and air circulation, perfect for multi-variety production.
- Optimized airflow, higher under-gutter clearance (up to 20′), and gothic peak design
- Designed to meet local requirements for snow, wind, and seismic loads.
- Singlepiece oval steel arches maximize natural light and minimize shadowing.
- Optimized interior space for maximum crop capacity and continuous, year-round production.
Venlo Glass Greenhouse
A Venlo glass commercial greenhouse structure designed and manufactured in Canada for year-round, energy-efficient production and precise climate control.
- Passive design strategies and ground-breaking energy technologies to reduce consumption and maximize efficiency.
- Proprietary structure
- A revolutionary circular water treatment system that enables zero wastewater
- Its advanced energy storage system achieves a peak coefficient of performance (COP) of up to 7.5
