Choosing a greenhouse manufacturer with installation and service is more than just about the structure. It’s a strategic decision that impacts the performance of your agricultural business, your peace of mind, and the longevity of your investment. At Harnois, we support market gardeners, horticulturists, and nursery operators—whether you’re running a small farm or managing a large-scale project. Our difference: a complete approach that integrates design, manufacturing, installation, service, and maintenance, adapted to Canada’s climate realities.
Why our approach is different
1. A start-to-finish commitment
We don’t just deliver structures. Harnois handles everything:
Technical planning
Permit assistance
Manufacturing
On‑site installation
After‑sales service and preventative maintenance
You benefit from a single point of contact from project start to finish.
2. Specialized agricultural greenhouses
Our structures are tailored to specific needs:
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Open-field or covered market gardener
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Custom projects for municipalities or research centers
3. Small and large projects with a greenhouse manufacturer with installation and service
From a first-time grower to an institutional project manager, Harnois adapts its solutions to your needs—without compromising on quality or service.
Our strength: seamless service continuity
| Step | Harnois’s Approach |
|---|---|
| Pre-project | Site evaluation, technical recommendations, quotation |
| Design | Engineers‑stamped plans, custom load calculations |
| Manufacturing | Locally produced structures using certified steel |
| Installation | Specialized Harnois team or trained partner installers |
| Maintenance | Regular upkeep, membrane replacement, retrofit and upgrades |
Testimonials from growers served by Harnois
Specialized agricultural greenhouses
At Harnois, we design specialized agricultural greenhouses that meet the exact requirements of Canadian growers. Whether for tunnel-based vegetable production, dual-span ornamental horticulture, or containerized nurseries, each structure is tailored to your crop type, your production mode, and regional climatic challenges.
Our greenhouses are designed to maximize natural light, simplify climate control, and deliver lasting durability—season after season. Plus:
- Resistance to snow and wind—engineered specifically for your region
- High-performance membranes—anti-condensation, diffusive, long-lasting
- Gothic arch and oval tube design—for optimal light penetration and drainage
- Available accessories—shade systems, doors, ventilation, etc.
A team dedicated to growers
As a greenhouse manufacturer with installation and service, we collaborate with:
Market gardeners (soil or organic)
Ornamental horticulturists
Specialized nurseries
New-generation farmers
Municipalities and research centers
Every project is unique, and we treat it that way.
Harnois: best greenhouse manufacturer in North America
Finding the best greenhouse manufacturer in North America means choosing more than just a structure. It requires proven expertise, durable materials, reliable technical support, and real adaptation to our climate. At Harnois, we combine in‑house engineering, personalized service, and local manufacturing to meet the needs of local growers. From small market gardens to large institutional projects, our goal is the same: to deliver a high‑performance, durable, and turnkey greenhouse from a greenhouse manufacturer with installation and service.
Ready to plan your next greenhouse?
Work with a greenhouse manufacturer with installation and service that goes well beyond delivery.
📞 Contact our team for a free, personalized evaluation
Get a quote within 48 hours.