FUJITSU AIRSTAGE J-7S VRF R32 | 48000 BTU - 8 Indoor Units

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A multi-zone HVAC approach designed for the realities of Quebec buildings

At AirGreen , we see the same problem every year in residential and commercial buildings in Greater Montreal: a poorly designed HVAC system leads to significant temperature fluctuations, uncontrolled energy consumption, and persistent occupant dissatisfaction. The FUJITSU AIRSTAGE J-7S VRF R32 | 48,000 BTU - 8 Indoor Units was specifically designed to address these real-world challenges, with zone-based control , proven thermal stability in cold climates , and unparalleled installation flexibility.

This Mini-VRF system is suitable for multi-unit residential buildings , offices , shops , and high-end residential projects in Montreal , Laval , Longueuil , and on the North and South Shores. It allows up to 8 indoor units to be connected to a single outdoor unit, while maintaining precise and independent control for each zone.

A system designed to function when the climate puts pressure on

Reliable heating down to -26°C, without compromise

In our northern climate, an HVAC system's ability to maintain its performance in extreme cold is crucial. The FUJITSU AIRSTAGE J-7S is designed to provide stable heating down to -26°C , without forced shutdowns or sudden drops in efficiency. In real-world conditions, this feature makes all the difference.

In several installations carried out by AirGreen in rental buildings in Laval and on the North Shore , this system replaced equipment that quickly lost its effectiveness as soon as the temperature dropped below -15°C. The observed result is consistent: a more uniform indoor temperature, fewer complaints from occupants, and a significant reduction in the use of supplemental electric heaters.

A concrete response to complex buildings

The J-7S Mini-VRF is particularly well-suited for buildings with significant architectural constraints: narrow buildings in Montreal , major renovations in Longueuil , or new multi-story constructions on the South Shore . Thanks to a total piping length of up to 120 meters and a high tolerance for elevation differences, it is possible to efficiently serve remote areas or areas spread across multiple levels.

For our teams, this means fewer technical compromises, a cleaner installation and better integration of the HVAC system into the existing building.

VRF technology for real comfort

The VRF (Variable Refrigerant Flow) principle allows for continuous adjustment of the refrigerant flow sent to each indoor unit. Unlike traditional on/off systems, the AIRSTAGE J-7S modulates its power in real time according to the actual needs of each zone.

In practice, this translates to:

• a more stable temperature in each room;

• a reduction in on/off cycles;

• improved component longevity;

• energy consumption better distributed over the season.

For property managers in Montreal and Laval , this type of regulation represents a direct advantage, both in terms of comfort and operating costs.

Energy efficiency and cost control

The FUJITSU AIRSTAGE J-7S VRF R32 boasts high efficiency levels in both heating and cooling. Its SEER2 , HSPF2 , and COP ratings at -8°C demonstrate its ability to maintain excellent performance even under demanding outdoor conditions.

On an office project we completed in Montreal East , replacing an old centralized HVAC system with a properly sized J-7S Mini-VRF resulted in a measured decrease in annual energy consumption, while also improving occupant comfort in previously problematic areas.

These performances also facilitate access to grant programs, including LogisVert , an element that we systematically integrate into our project analyses.

Choosing R-32 refrigerant: efficiency and responsibility

The R-32 used by the AIRSTAGE J-7S offers an excellent balance between energy efficiency and reduced environmental impact. Its lower refrigerant charge, combined with an optimized system design, contributes to improved safety in multi-zone buildings and easier compliance with regulatory requirements.

In several multi-unit housing projects on the South Shore , this point facilitated the validation of plans and reduced the adjustments required during construction.

A wide range of indoor units for complete customization

One of the great advantages of the FUJITSU AIRSTAGE J-7S lies in the diversity of compatible indoor units , allowing the system to be adapted to the actual uses of each space:

• Slim ducted system : discreet integration into ceilings, ideal for projects where aesthetics are a priority.

• Compact cassette : a balanced solution for offices and shops, with even air distribution.

• Wall mounting : an efficient and simple option for individual homes or enclosed offices.

• Multi-position air handling unit : perfect for common areas, entrance halls or large spaces.

At AirGreen , we regularly combine several types of units within the same project in order to optimize comfort, without unnecessarily oversizing certain areas.

Security, reliability and continuity of service

The J-7S incorporates advanced safety features, including leak detection sensors and automatic refrigerant shut-off options. These features are particularly valued in commercial and multi-residential buildings where service continuity and risk management are critical.

In terms of HVAC maintenance , the system's modular design allows for targeted interventions. Maintenance on an indoor unit can be performed without affecting the entire building, a major advantage for managers in Longueuil and on the North Shore .

Feedback and lessons learned from the field

As we installed the FUJITSU AIRSTAGE J-7S , certain realities became clear:

• Precise sizing , based on actual loads, is essential;

• Rigorous piping planning simplifies installation and limits subsequent adjustments;

• Proper user training significantly reduces avoidable service calls.

These elements are an integral part of the AirGreen methodology, going far beyond the simple installation of the system.

Why AirGreen Makes a Difference

Choosing AirGreen means working with a team that understands both Quebec's climatic constraints and the technical complexity of Fujitsu VRF systems . We guarantee:

• a complete and honest analysis of the building's needs;

• rigorous management of applicable subsidies;

• an installation that complies with best practices;

• a structured and responsive after-sales service.

Each project is treated as a long-term investment, with a clear objective: to offer a sustainable, high-performing and economically sound HVAC solution.

Conclusion

The FUJITSU AIRSTAGE J-7S VRF R32 | 48000 BTU - 8 Indoor Units is an ideal solution for buildings requiring zone control , reliable performance in cold climates , and flexible installation . When properly designed and installed, it becomes a true driver of comfort and energy efficiency.

For a detailed quote , technical analysis , or to discuss the installation of this system in Montreal , Laval , Longueuil , on the North Shore or South Shore , contact AirGreen directly. Our team will support you at every stage of your HVAC project.