Commercial Greenhouses, Structures and Equipment
Harnois Greenhouse designs and manufactures high-performance commercial greenhouse 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 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.
High Tunnel Structure
Ideal for Small Fruits Growers and Open-Field Farmers
- Extended growing season
- Better Yield. Better Quality
- Better Climate, Healthier Crops
- Grow More, Spend Less
Freestanding Greenhouse
Ideal for growers looking for a durable and versatile greenhouse structure.
- Designed to meet local requirements for snow, wind, and seismic loads.
- Pre-drilled structural-grade steel ensures superior strength and fast installation.
- Designed for both heated, fourseason production and use as a cold-frame structure
- Optional webbed trusses integrated into the bows
Round Can’t. Square Won’t. Oval Does.
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 greenhouse covering, minimizing stress points and extending the lifespan of your film over time.
Gutter Connected Greenhouse
Ideal 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.
Net-Zero Venlo Glass Greenhouse
An advanced climate management system that optimizes the growing environment while reducing energy consumption.
- 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
