Commercial HVAC Installation
Commercial HVAC Installation Services
We install rooftop units, commercial ventilation and ductwork across Greater Montreal — and we install only. No residential calls, no maintenance contracts, no competing priorities. One RBQ-certified team carries your project from load calculation to commissioning, so nothing is lost between the plans and the job site.
✓ RBQ licensed — 5844-3979-01
✓ 100% commercial — B2B only
✓ Free quote with on-site visit
✓ Work scheduled outside your hours
Why Nadair
Specialists, not generalists — why it matters on installation day
When design and installation are handled by separate companies, the gaps get costly: oversized equipment, rework, missed dates. One team owning both ends is what removes them.
One Point of Contact
No juggling a separate engineering firm and installer. The same team carries your project from load calculation through start-up and commissioning.
No Imposed Service Contract
We install and hand over. There is no maintenance contract bundled into the price and no after-sales service to upsell you on.
Commercial-Only Expertise
Restaurants, factories, labs, gyms, warehouses — each has its own code and equipment. We install for them every day, not residential systems on the side.
Equipment
Commercial HVAC systems we install
Equipment sized for your building, installed to the Quebec Construction Code
Rooftop Units (RTUs)
Integrated heating and cooling in one rooftop package — the standard solution for commercial buildings in Quebec. New installations, replacements and capacity upgrades, including crane positioning and curb adapters.
Ductwork Networks
Air distribution, exhaust and ventilation in commercial-grade materials — including fire-rated kitchen exhaust ducts and zoned distribution for multi-tenant buildings.
Ventilation and Make-Up Air
Exhaust systems, make-up air units (MAU) and dedicated ventilation. Essential for commercial kitchens, industrial spaces and indoor air quality.
Installation
What a Nadair installation covers, start to finish
Installation is our core trade. Every project is carried out by our own RBQ-certified team with the rigour commercial buildings demand — and a single point of contact from design through commissioning.
✓ Rooftop units (RTU) — new installations, replacements and capacity upgrades
✓ Commercial ventilation, exhaust and make-up air systems
✓ Kitchen exhaust ductwork built for NFPA 96 compliance
✓ Zoned and CRAC systems for laboratories and data rooms
✓ Permits, inspections and coordination with electrical and gas trades
Kitchen exhaust is governed by fire-safety standards. On restaurant projects the ductwork is built for NFPA 96 kitchen hood compliance, so it passes inspection.
Industries served
Commercial HVAC installation by industry
Every sector has its own code, equipment and constraints. The HVAC by industry section covers each one in detail.
Restaurants
Kitchen exhaust, make-up air and grease-rated ductwork, built to MAPAQ and NFPA 96 requirements.
Gyms and Sports Facilities
High-capacity ventilation, humidity control and locker-room exhaust — sized for peak occupancy.
Warehouses and Logistics
Industrial rooftop units and destratification for large volumes at controlled cost.
Retail
Reliable climate control that keeps customers comfortable and products protected, from boutiques to shopping centres.
Factories and Manufacturing
Process exhaust, industrial ventilation and worker safety for heat, fumes and dust.
Laboratories
Fume hoods, containment, pressure control and HEPA filtration for controlled environments.
Our process
From your call to a fully operational system
A clear process, dates met, and no surprises on the invoice
01
On-Site Assessment
A free visit to your building. We survey existing conditions, confirm your needs and identify the technical constraints before anything is priced.
02
Design and Quote
Load calculations, equipment selection and a detailed quote. Specifications, scope, timeline and pricing — all transparent, all in writing.
03
Installation
Carried out by our RBQ-certified team. Crane coordination, connections, permits and inspections, with minimal disruption to your operations.
04
Commissioning
Performance testing, system balancing and delivery of the complete documentation. Manufacturer warranties and our installation warranty included.
Service area
Commercial HVAC installation across Greater Montreal
We install for commercial, institutional and industrial buildings in Laval, the Island of Montreal, the North Shore, the South Shore and the West Island — within roughly 100 km.
From a restaurant in a dense commercial corridor to a factory on the edge of the region, the same team handles the site survey, the installation and the inspections. No subcontracting the work out to whoever is available.
Confirmed coverage includes Montreal’s boroughs, Laval, Longueuil, Brossard and Boucherville on the South Shore, and Terrebonne and Repentigny on the North Shore. See the full list on our service areas page.
FAQ
Frequently asked questions
What our commercial clients ask us most often
What is the difference between HVAC installation and HVAC service?
Installation means putting in new equipment or replacing existing units. Service means maintenance, repairs and emergency calls. We do installation only, which is why there is no maintenance contract attached to our work.
Why choose an installation-only contractor instead of a general HVAC company?
Because installation is all we do, our team stays current on commercial equipment and site conditions, and there is no conflict between selling you service and sizing your system correctly. You get one point of contact from design to commissioning.
What commercial HVAC equipment do you install?
Rooftop units (RTU), ventilation and make-up air systems, commercial ductwork including kitchen exhaust, and zoned or CRAC systems for laboratories and data rooms. Equipment arrives with manufacturer warranties, and our installation work is warranted against defects.
How long does a commercial installation take?
It depends on scope. A straightforward rooftop unit replacement can be done in one to two days; a new installation with ductwork can take a week or more, and restaurant ventilation varies with the kitchen layout. Your quote includes a detailed timeline, and work can be scheduled outside your operating hours.
Do you handle permits and inspections?
Yes. Permit applications and required inspections are part of the service. We coordinate with the municipality and make sure the work complies with the Quebec Construction Code.
How is a commercial HVAC project priced?
Price follows scope: equipment capacity, crane access, curb or structural work, the extent of ductwork, and whether the work has to happen outside your operating hours. We quote the actual building after a site visit, never over the phone from a square-foot guess.
Related
Related services and resources
Go deeper on the equipment, the industries we serve and the areas we cover.
HVAC by industry
What we install for restaurants, factories, laboratories, gyms, warehouses and retail — each to its own code and performance standard.
Service areas
The municipalities across Greater Montreal, the North Shore and the South Shore where we install commercial HVAC systems.
NFPA 96 kitchen hood compliance
Fire-safe kitchen exhaust ductwork for Montreal restaurants, installed to pass inspection the first time.
Free Quote
Let’s discuss your project
Tell us about your building and receive a detailed quote with equipment specifications, scope of work and transparent pricing. Free on-site assessment, response within 24–48 hours.
Greater Montreal and surrounding areas · RBQ licensed · 100% commercial