FUJITSU AIRSTAGE J-7S VRF R32 | 48000 BTU - 11 Indoor Units

• BROCHURE: FRENCH
• BROCHURE: ENGLISH

A VRF HVAC architecture designed for the complex realities of Quebec

In residential, commercial and multi-unit projects in Greater Montreal, a high-performance HVAC system is never just a technical specification sheet. At AirGreen, we work daily on existing buildings, major renovations and new constructions where the constraints are very real: cramped technical rooms, long distances between zones, high acoustic requirements, narrow balconies, shared roofs and, above all, a harsh and prolonged winter climate .

The FUJITSU AIRSTAGE J-7S VRF R32 – 48,000 BTU , capable of powering up to 11 indoor units (12 maximum) , was specifically designed for this type of configuration. It is a next-generation mini-VRF that combines exceptional installation flexibility , proven thermal stability in extreme cold , and advanced energy efficiency, all while maintaining a compact form factor suitable for dense urban environments such as Montreal, Laval, and Longueuil .

This system is not intended for simplistic projects. It becomes truly meaningful when zone management, continuous heating, and precise control become central issues.

A compact outdoor unit designed for existing buildings

Smaller format, real impact on projects

With its rated capacity of 48,000 BTU (4 tons) , the AOUK048SSAN7 outdoor unit stands out for its significantly reduced size and weight compared to previous generations. In practice, this translates to:

• simpler integration on condo technical balconies ,

• possible installations under a window or under a balustrade

• a reduction in costly structural modifications,

• better acceptance by condominium associations.

In several projects carried out by AirGreen on the South Shore and the North Shore , this compactness made it possible to avoid the complete relocation of the outdoor unit, which would otherwise have considerably increased the budget.

Designed for durability

The outdoor unit incorporates a base heater , essential for maintaining system reliability during prolonged periods of freezing temperatures. The electronic components are cooled directly by the refrigerant, which improves their thermal stability and extends their lifespan, even when outdoor temperatures remain very low for several consecutive days.

A freedom of placement rarely matched in mini-VRF

Up to 120 m of total piping

The FUJITSU AIRSTAGE J-7S allows for a total piping length of up to 120 m , offering remarkable installation flexibility. This feature is particularly important in:

• multi-story buildings,

• buildings with irregular floor plans,

• projects where the internal units are dispersed over long distances.

At AirGreen, we have used this flexibility to serve 11 separate zones in mixed-use buildings, without multiplying outdoor units or compromising system balance.

Management of elevation changes and hydraulic stability

The system accommodates significant height differences , facilitating service to areas at different levels. This capability reduces design constraints and allows for optimized distribution of indoor units without compromising overall performance.

Heating performance: designed to work when it's really cold

Continuous heating down to −26 °C

Unlike many systems that reduce their capacity or shut down for safety reasons, the J-7S is designed to operate in heating mode down to -26°C . This feature is essential in exposed areas of the Montérégie , the North Shore , or East Montreal , where cold snaps are frequent.

For the occupants, this means:

• a stable indoor temperature

• less reliance on auxiliary heating,

• improved predictability of energy costs.

Maintaining capacity under real-world conditions

Even at -18°C , the system retains a large part of its nominal capacity. This consistency is particularly valued in multi-unit residential buildings, where a drop in performance quickly leads to complaints from residents and an overload of auxiliary systems.

Energy efficiency and eligibility for subsidies

The FUJITSU AIRSTAGE J-7S 48,000 BTU is known for its high seasonal efficiency in both cooling and heating. Its high SEER2, HSPF2, EER2, and COP values ​​make it a smart choice for homeowners looking to reduce their long-term energy consumption.

It is also eligible for provincial subsidies , including LogisVert , with an amount of up to $4,296 , which greatly improves the return on investment when installed as part of an eligible project.

At AirGreen, we support our clients at every stage of the grant process, from system selection to final documentation.

R-32 refrigerant: safety, compliance and environmental responsibility

The choice of R-32 meets increasingly stringent environmental and regulatory requirements. This refrigerant allows for:

• a reduced total load,

• a reduced environmental impact

• improved thermal efficiency per unit of refrigerant.

The system incorporates leak detection sensors on the ducted indoor units and can be supplemented with optional safety devices, including alarms and automatic shut-off valves. These features are particularly relevant in high-occupancy buildings.

Up to 11 indoor units adapted to each zone

True modularity, not a compromise

The J-7S is compatible with a wide range of indoor units, allowing each zone to be adapted to its actual use:

• Slim ducted units for limited ceilings,

• Compact cassettes for uniform diffusion in open spaces,

• Silent wall-mounted lights for offices and bedrooms,

• Multi-position air handling units for high-demand areas.

This modularity allows for the design of customized systems, where each space benefits from the right type of unit, without oversizing or discomfort.

AirGreen feedback: what we learned from the field

Common mistakes to avoid

• To base solely on the surface area without detailed thermal analysis.

• Underestimating the importance of zone distribution.

• Neglecting piping and elevation constraints from the design stage.

Our approach

At AirGreen, every VRF project begins with a complete needs analysis , followed by a detailed design incorporating:

• the reality of building occupancy,

• the actual heating and air conditioning costs,

• HVAC-electrical coordination (220 V, MCA 36 A, MOP 40 A),

• local regulatory requirements.

This rigor allows us to deliver stable, durable and efficient systems, even in complex projects in Montreal, Laval, Longueuil, South Shore and North Shore .

Why entrust your VRF project to AirGreen

• Experienced refrigeration technicians specializing in VRF and mini-VRF .

• Recognized expertise in residential, commercial and multi-unit housing .

• Transparent pricing and a clear final offer before work begins.

• $5 million liability insurance .

• Structured after-sales service and rigorous HVAC maintenance.

Conclusion and call to action

The FUJITSU AIRSTAGE J-7S VRF R32 – 48,000 BTU – 11 indoor units is an HVAC solution ideally suited to demanding projects in Quebec. When properly designed, installed, and commissioned, it offers a sustainable balance between comfort, energy efficiency, and cost control.

For a personalized analysis , detailed estimate , or VRF feasibility study , contact AirGreen today. Our team serves Montreal, Laval, Longueuil, the North Shore, and the South Shore , with a rigorous and transparent technical approach.