An Energy Transformation Underway in Montréal’s Commercial Landscape
Across many neighborhoods in Montréal, commercial buildings constructed between the 1950s and 1980s are now undergoing major overhauls in terms of HVAC. The most notable change? The growing adoption of variable refrigerant flow (VRF) air conditioning systems. At AirGreen, we support this transformation by delivering tailored, sustainable, and energy-efficient solutions that meet the specific needs of aging commercial buildings, especially in downtown Montréal, Laval, Longueuil, the North Shore, and the South Shore.
Why the VRF System Is Becoming a Strategic Choice for Commercial Buildings
A Tailor-Made Technology for Older Structures
Older commercial buildings often present architectural constraints: varying ceiling heights, partitioned spaces, load-bearing structures that can’t be altered… These make the installation of a traditional HVAC system complex or costly. VRF systems rise to the challenge with:
-
Exceptional installation flexibility, using slim ducts and compact indoor units.
-
Modular operation that allows for easy additions or removals of cooling zones without overhauling the entire system.
-
Extended piping lengths, ideal for high-rise buildings.
Unmatched Energy Efficiency to Cut Operating Costs
Variable refrigerant systems adapt their power output in real time based on the demand in each zone. This enables:
-
A major reduction in energy consumption, thanks to the Inverter compressor that avoids frequent stops and starts.
-
Better thermal comfort, with more stable temperatures and smooth, quiet starts.
-
Lower maintenance costs, since system components experience less wear and tear.
In several recent projects in Ahuntsic, Saint-Henri, and Hochelaga-Maisonneuve, commercial building owners have reported 30–40% annual energy savings after installing a VRF system.
Case Study: Modernizing a Commercial Building on Saint-Laurent Boulevard
Initial Situation
A six-story building dating from 1965, used as shared office space, had an outdated central air conditioning system—noisy and inefficient. The client was looking for a discreet, high-performing solution, and most importantly, one that was compatible with the original architecture.
Our Solution: Lennox VRF System – Varix Extreme Cold Climate, 22 Tons
We recommended and installed a 22-ton Lennox Varix Extreme Cold Climate VRF system, built with Samsung parts, specifically designed for Montréal’s harsh winter conditions.
Technical Specifications:
-
R-410A refrigerant with a lower environmental impact.
-
22 tons of capacity – ideal to cover the entire building.
-
Dual rotary Inverter compressor offering precise temperature control within 0.5°C.
-
Wall-mounted and ceiling cassette indoor units, installed according to each floor’s constraints.
-
Individual zone controls, all connected to a centralized management platform.
Installation Process
-
Total duration of work: 12 business days
-
Night work performed to avoid disrupting tenant operations.
-
Clean removal of the old system, proper waste disposal, and integration of new units without major structural modifications.
Results and Client Satisfaction
-
Noise reduced by 65% in work areas.
-
Estimated energy savings of 35% in the first year.
-
Tenants praised the stable indoor temperatures and lack of drafts.
Why More and More Businesses Choose Us for Their VRF Projects
Proven Expertise in Upgrading Older Buildings
At AirGreen, we understand the technical challenges of updating HVAC systems in buildings constructed before current efficiency standards. We:
-
Conduct full thermal audits to identify existing energy losses.
-
Design custom VRF systems, based on space usage and the building’s energy profile.
-
Work with trusted brands like Lennox, Samsung, Fujitsu, and Bosch, to guarantee durability and performance.
-
Handle all grant paperwork for LogisVert or commercial programs from Transition Énergétique Québec (TEQ) to maximize your savings.
Available Grants
Commercial buildings installing high-efficiency systems like VRF may be eligible for generous grants. For example:
-
Up to $25,000 through the LogisVert program for mixed-use buildings or office properties.
-
Additional grants depending on the installed system’s power (calculated in BTUs or tons).
Long-Term Advantages of a VRF System for Commercial Buildings
Continuous Adaptation to Space Usage
Commercial buildings constantly evolve: new rooms, tenant departures, changing usage. A VRF system can adapt without a full redesign:
-
Add new indoor units without altering the main network.
-
Reassign comfort zones based on current needs.
Increased Property Value
A building with a high-performance HVAC system becomes more valuable and attractive:
-
Better comfort for occupants.
-
Fewer complaints about noise, heat, or cold.
-
Reduced common area utility costs.
Simplified Maintenance
With our custom commercial HVAC maintenance contracts, we provide:
-
Regular preventive maintenance visits.
-
Rapid response in case of issues.
-
Extended equipment lifespan.
Conclusion: A Smart Investment for the Future of Montréal’s Real Estate Heritage
Variable refrigerant flow (VRF) air conditioning is fast becoming an essential solution for owners of older commercial buildings in Montréal and surrounding areas. It offers energy efficiency, modularity, quiet operation, and property value enhancement. At AirGreen, we bring our expertise to every project, from diagnostics to commissioning, with an unmatched standard of quality.
Managing a commercial building in Montréal, Laval, Longueuil, or on the North or South Shore? We're here to deliver a tailored, efficient solution aligned with today’s top HVAC practices.