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Commercial HVAC · Greater Montréal · Updated October 14, 2026
Commercial HVAC system design and installation in Montréal
Offices, stores, restaurants, hotels, warehouses and plants: we design, install, test and maintain your heat pumps, VRF systems, ventilation and refrigeration in Montréal, Laval, Longueuil, the North Shore and the South Shore.
Our work: lifting, supports, refrigerant lines and power.
Watch for: any new load on the roof is checked by a structural engineer.
Offices
RBQ 15.10 · 15.8
What goes here: cassettes, concealed ducted units or heat-recovery VRF.
Our work: one set point per zone, central controls.
Watch for: cassettes and ducted units need a drop ceiling.
Meeting room
RBQ 15.10 · 15.8
What goes here: a dedicated unit and fresh air set to occupancy.
Our work: sizing for the number of seats, airflow balancing.
Watch for: ventilation follows the number of people, not only the temperature.
Warehouse
RBQ 15.10 · 15.8 · 16
What goes here: large-capacity heat pumps, general ventilation, dehumidification.
Our work: installation and commissioning to the plans.
Watch for: industrial building: engineer’s plans are required, even for a small building.
Store or dining room
RBQ 15.10 · 15.8
What goes here: ducted central or packaged heat pump, cassettes, consoles.
Our work: customer comfort, discreet grilles.
Watch for: a restaurant is a Group A occupancy: an engineer is required for mechanical systems.
Mechanical room
RBQ 15.8 · 16
What goes here: HRV or ERV air exchanger, electrical panel, controls.
Our work: fresh-air and exhaust connections, power.
Watch for: plan service access to the filters and core.
15.8 · 15.10 · 16Ventilation, refrigeration and electrical under one RBQ licence: 5645-9605-01.
up to 90%of eligible costs paid by Hydro-Québec on Rate G. 75% on other business rates.
24 hto receive the detailed quote after the on-site visit.
$5Mliability insurance
5 regionsMontréal, Laval, Longueuil, North Shore, South Shore
Bouchervilleshowroom, 514 316-3007
Mon. to Fri.8 a.m. to 6 p.m., Friday until 4 p.m.
01 · Why design matters
A well-designed HVAC system pays off every day: comfort, air, energy and costs.
A well-designed, properly installed commercial HVAC system sets your building’s comfort, air quality, energy efficiency and operating costs. Sized to your needs, it lasts longer and breaks down less often.
Design starts on site: building size, occupancy, insulation and Montréal’s climate.
ComfortSteady temperature in every zone, without drafts.
Air qualityFresh air and filtration matched to real occupancy.
Energy efficiencyThe right unit, at the right capacity, in the right place.
Operating costsLess energy, fewer service calls.
PerformanceTesting and balancing before handover.
Lifespan and reliabilityA system sized to the building works less hard and lasts longer.
Heat delivered for the same electricity, in winter
Electric baseboards equal 1. According to Hydro-Québec, a heat pump can reach up to 3.
Electric baseboards
1×
Heat pump
up to 3×
Source: Hydro-Québec, heat pumps for businesses. Actual gains depend on the unit, its capacity and the outdoor temperature.
02 · Our design and installation services
Four services, one point of contact, from the first visit to maintenance.
We provide complete design and installation services so your system runs at peak efficiency, then we keep it that way.
01
System design
Building analysis: size, occupancy, insulation and local climate. Then a system fitted to your needs and budget.
Load needs by zone
System and equipment selection
Duct and line layout
You get: a detailed proposal, or our data sheets for the project engineer.
02
System installation
Our refrigeration technicians integrate the system into your building: roof, ceilings, ducts, electrical panel.
Heat pumps, VRF, AC (15.10)
Ducts and ventilation (15.8)
Electrical supply (16)
You get: a clean, compliant installation and one point of contact.
03
Performance testing
After installation, we test and fine-tune until the system delivers the planned comfort and savings.
Operating tests
Set-point and airflow balancing
Controls check
You get: a commissioning report.
04
Post-installation support
Our team stays with you: preventive maintenance and service to keep the system efficient for its whole life.
Non-industrial Part 9: we design. Otherwise, the engineer signs the plans.
AirGreen or engineer
STEP 04
Quote in 24 h
Models, quantities and prices line by line, within 24 hours of the visit.
AirGreen
STEP 05
Installation
Refrigerant, ducts, ventilation and electrical: RBQ 15.8, 15.10 and 16.
AirGreen
STEP 06
Testing and commissioning
Tests, set-point and airflow adjustments, controls checked.
AirGreen
STEP 07
Handover file
Spec sheets and French invoices, ready for Hydro-Québec.
You
03 · Your project sheet
Five answers, and your project takes shape.
Each answer updates the sheet: engineer or not, systems to consider, Hydro-Québec support, who does what. Nothing is sent: copy the sheet and attach it to your request.
Q1What building?
Q2How many storeys?
Q3Building area?
Building area is the largest horizontal area above ground, measured to the outside faces of the walls.
Q4What matters to you (several choices)
Q5Rate on your Hydro-Québec bill
The rate is shown in the “Electricity cost details” section of your bill.
04 · A tailored approach
Every commercial building is unique. Pick yours.
Offices in Montréal, retail in Laval, a plant in Longueuil, a hotel on the North or South Shore: we start from your needs, expectations and constraints.
What we install
A busy office space in Montréal
Heat-recovery VRF for several tenants
Ceiling cassettes or ducted units
HRV or ERV air exchanger
Design
It depends on sizeAt most 3 storeys and 600 m²: we can design with the Part 9 solutions. Beyond that: plans signed and sealed by an engineer.
Learn more
Several tenants on one system? A heat-recovery VRF can heat one zone and cool another at the same time.
Engineer’s plans requiredIndustrial use or assembly occupancy: the law reserves system design to an engineer, whatever the size. We install to the plans.
Learn more
Humidity damages cardboard, wood and electronics: dehumidification is sized on volume and door openings.
Engineer’s plans requiredIndustrial use or assembly occupancy: the law reserves system design to an engineer, whatever the size. We install to the plans.
Learn more
Air exhausted by the hood must be replaced: dining-room ventilation is designed with the kitchen.
Every part of the job has its licence. Check them before you sign.
Pick the work in your project: we show what the law requires and what we do ourselves.
Work
What the law requires
Who does it
Heat pumps, AC, VRF
RBQ 15.10, with 15.8 for forced-air systems
AirGreen
Ducts, ventilation, HRV
RBQ 15.8 Ventilation
AirGreen
Walk-in cooler, refrigeration
RBQ 15.10 Refrigeration
AirGreen
Equipment wiring
RBQ 16 Electrical
AirGreen
Refrigerant handling
Technician’s environmental certificate H
AirGreen
Boiler, hydronic heating
RBQ 15.4 Hydronic heating
Licensed partner
Gas appliances
Gas licence and qualifications
Licensed partner
Sealed plans and specs
Engineer, member of the Ordre des ingénieurs du Québec
Project engineer
Roof load, heavy supports
Structural engineer
Project engineer
Hydro-Québec support application
You, or a mandated partner
You, with our invoices
Any licence can be checked for free in the Régie du bâtiment du Québec licence-holder register.
08 · Hydro-Québec support
How much Hydro-Québec can pay, and when.
Efficient Solutions program: support is the lowest of three amounts: the OSE tool’s calculation, the maximum percentage of your eligible costs, and $5 M.
AYour electricity rate
$
Eligible costs: new equipment, installation and start-up, before taxes.
This request comes after your file is checked, once the equipment is installed and running.
What businesses have received
Retail store
$5,715
Garage
$5,725
Fine grocery
$12,145
Restaurant
$14,945
Commercial office
$26,975
0$10,000$20,000$30,000
Supermarket
$53,795
Multi-unit building
$274,690
Office building
$542,280
0$200,000$400,000$600,000
Source: Hydro-Québec, commercial market project examples (viewed October 14, 2026). Real projects published by Hydro-Québec, calculated under the rules in force at the time.
Manufacturers are moving to A2L refrigerants such as R-32. Here are the numbers, then six common beliefs to test.
Global warming potential of refrigerants
Relative to CO₂, which equals 1.
R-410A Current ACs and heat pumps
2,088
R-22 HCFC: new installation banned in Québec
1,810
R-134a Chillers, refrigeration
1,430
R-32 A2L, new ACs and heat pumps
675
R-1234yf HFO, very low potential
4
05001,0001,5002,0002,500
Limit of 750 for new chillers since January 1, 2025.
Sources: MELCCFP, potentials of the main halocarbons; R-410A calculated from its two components (R-32 and R-125, in equal parts); SOR/2016-137, Schedule 1.1.
True or false?
« R-410A is banned in Canada for air conditioners and heat pumps. »
Not as of today. Schedule 1.1 of federal regulation SOR/2016-137 sets no limit for these units. It targets chillers, among others, limited to 750 since January 1, 2025.
« Every commercial HVAC project needs engineer’s plans. »
No. The law excludes a non-industrial building designed with the complete acceptable solutions of Part 9: at most 3 storeys and 600 m², offices, retail or housing.
« A small 400 m² warehouse doesn’t need an engineer. »
No. A building used for storage, manufacturing or repair is an industrial building: the small-building exception doesn’t apply.
« Hydro-Québec must approve the project before the work. »
Not for the simplified offer: you apply once the equipment is installed and running. The custom offer does require approval before you start.
« In Québec, you need a certificate to handle refrigerant. »
The environmental qualification certificate for halocarbons (H) is mandatory for any work that handles halocarbons.
« An AHRI-certified split heat pump is enough for Hydro-Québec support. »
Not since March 31, 2026: in Efficient Solutions, split heat pumps must be ENERGY STAR certified.
Answer to see the explanation.
10 · Why choose AirGreen
Your contractor choice shows in comfort, bills and breakdowns.
Here is what sets us apart, in facts you can check.
Expertise and experience
RBQ licence 5645-9605-01: 15.8, 15.10 and 16
Professional refrigeration technicians for installation and service
Heat pumps, VRF, PTACs, ventilation and refrigeration
Customer-focused approach
Free on-site estimate
Detailed quote within 24 hours
One point of contact, from first call to maintenance
Eco-friendly solutions
Heat pumps up to 3 times more efficient than baseboards (Hydro-Québec)
Lower-potential refrigerants when there’s a choice
Heat recovery from exhaust air
Where we work
Montréal, Laval, Longueuil, the North Shore and the South Shore. Before installing an outdoor unit, check your city’s rules:
No question matches. Try “engineer” or “gas”, or call us at 514 316-2973.
Québec’s Engineers Act reserves a building’s mechanical, thermal and electrical systems to engineers. Exception: a non-industrial building designed with the complete acceptable solutions of Part 9 of the code (at most 3 storeys and 600 m² of building area). Restaurants, schools, halls, care facilities and industrial buildings are always covered. Our project sheet gives a first answer; your engineer or municipality confirms it.
Yes, for buildings where the law allows it: system choice, equipment selection, duct and line layout. For the others, we install from the plans and specs signed and sealed by the project engineer, and we provide the spec sheets.
A building analysis (size, occupancy levels, insulation, local climate), load needs by zone, choice of systems and equipment, then a proposal that fits your needs and budget.
Wall and multi-zone heat pumps, cassettes, ducted units, central and packaged heat pumps, VRF systems, PTACs, HRV and ERV air exchangers, dehumidifiers and commercial refrigeration.
Operating tests, set-point and airflow balancing, and a controls check, until the system delivers the planned comfort and savings. You receive a commissioning report.
Yes. Our team provides preventive maintenance and service to keep the system efficient for its whole life. See our commercial preventive maintenance page.
No. Our RBQ subclasses are 15.8 Ventilation, 15.10 Refrigeration and 16 Electrical. Gas connections and hydronic heating (15.4) go to a partner who holds the required licences.
Yes for air conditioners and heat pumps: the federal regulation sets no limit for them as of today. New chillers are limited to a global warming potential of 750 since January 1, 2025.
Up to 90% of eligible costs on Rate G or Flex G (Small Business stream), up to 75% on other business rates, with a cap of $5M per project. The exact amount comes from Hydro-Québec’s OSE tool, and only Hydro-Québec confirms it.
You, or a partner you mandate. Our invoices show the model, quantity, price, installation address and tax numbers, in French, as the program requires.
The detailed quote leaves our office within 24 hours of the on-site visit, which is free.
Montréal, Laval, Longueuil, the North Shore and the South Shore. Our office is at 4951 Sainte-Catherine Street East, Montréal, and our showroom at 1370 Joliot-Curie Street, Unit 712, Boucherville.
With AirGreen
Experience the AirGreen difference: we come see your building, for free.
Bring your plans, a Hydro-Québec bill and your questions. The visit is free and the quote goes out within 24 hours.
$5M insuranceLiability coverage from start to finish.
ShowroomBoucherville, 514 316-3007. Come see the units.
Sources checked October 14, 2026. Engineers Act, CQLR c. I-9, ss. 2, 3, 3.1 and 24 (LégisQuébec, current to August 12, 2026); Ordre des ingénieurs du Québec, decision aid for buildings (2022); Québec Construction Code, Chapter I, Building (NBC 2020 as amended for Québec), scope of Part 9; Ozone-depleting Substances and Halocarbon Alternatives Regulations (SOR/2016-137), Schedule 1.1 (current to September 21, 2026); MELCCFP, halocarbons and warming potentials; Québec.ca, environmental qualification certificate for halocarbons (H); Régie du bâtiment du Québec, heating, ventilation and refrigeration subclasses; Hydro-Québec, efficient equipment for businesses, heat pumps for businesses, project examples and Efficient Solutions participation guides (March 2026). Amounts shown are estimates; only Hydro-Québec confirms the support granted. This page provides general information: whether an engineer is needed is confirmed by a professional or your municipality.
