FUJITSU AIRSTAGE J-7S VRF R32 | 48000 BTU - 12 Indoor Units

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A Mini-VRF architecture designed for demanding buildings in Quebec

At AirGreen Heat Pumps, Air Conditioning & Heating , we have been designing and installing advanced HVAC systems for over fifteen years in Montreal , Laval , Longueuil , and on the North and South Shores . The FUJITSU AIRSTAGE J-7S VRF R32 – 48,000 BTU is ideal for projects where a traditional heat pump quickly reaches its limits: multi-unit residential buildings, commercial buildings, professional offices, clinics, private schools, or high-end residences with numerous independent zones.

This Mini-VRF system was designed to address three very specific realities of the Quebec market:

• prolonged winters with very low temperatures ,

• complex existing buildings requiring modernization

• and increasing pressure on energy efficiency and subsidies .

The FUJITSU AIRSTAGE J-7S: a compact, yet extremely sophisticated VRF

Unlike conventional multi-head systems, the J-7S relies on full VRF (Variable Refrigerant Volume) logic. This means that the refrigerant flow adapts in real time to the precise needs of each zone, rather than operating in fixed cycles.

Essential technical data

• Rated cooling capacity : 48,000 BTU

• Guaranteed heating capacity down to -26°C

• Refrigerant gas : R-32 , with low environmental impact

• ENERGY STAR® certification (standard and cold climate)

• Number of zones : up to 12 indoor units

• Noise level of the outdoor unit : approximately 60 dB(A)

• Power supply : 220 V

• Electrical protection : MCA 36 A / MOP 40 A

In a real-world context, this translates into remarkable thermal stability , even when some areas require intensive heating while others are partially or totally unoccupied.

Heating at -26°C: a performance that changes energy planning

Winter heating is often the weak point of HVAC systems poorly adapted to Quebec's climate. The FUJITSU AIRSTAGE J-7S was designed to offer true continuity of service , even during periods of extreme cold.

Why this performance is reliable in the field

• Integrated base heating to prevent capacity loss

• Advanced compressor thermal management

• Refrigerant-cooled electronic components ensure increased stability

• Maintains high capacity at -15°C and -26°C , limiting the need for electrical backup

In several installations carried out by AirGreen in Montreal North , Laval-des-Rapides and Brossard , this system has made it possible to drastically reduce the use of auxiliary heating , even during prolonged cold spells.

Decisive installation flexibility for both renovation and new construction

Pipe length and design freedom

The J-7S allows for a total piping length of up to 120 meters , opening the door to previously complex or expensive configurations:

• outdoor units located far from occupied areas,

• high-rise buildings,

• Existing mechanical premises that are difficult to relocate

• projects to convert old hot water or forced air systems.

In several older buildings in Longueuil and Plateau-Mont-Royal , this feature has made it possible to avoid major structural work.

Reduced external footprint

The outdoor unit is more compact and lighter than previous generations, which makes it easier to:

• technical balcony installation,

• concealment behind architectural screens,

• integration under a window or on a restricted roof.

These details often make all the difference in dense Montreal neighborhoods.

A wide selection of indoor units for room-by-room customization

The FUJITSU AIRSTAGE J-7S stands out for its compatibility with a wide variety of indoor units, allowing for a truly customized approach.

Types of units available

• Slim ducted (ARUL)
  Extremely low height, ideal for low ceilings, corridors and discreet technical spaces.

• Compact cassette (AUUA)
  Format compatible with standard ceilings, perfect for offices, shops and meeting rooms.

• Mural (ASUA)
  Very quiet operation, suitable for residential spaces and enclosed offices.

• Multi-position air handling unit (ARUX)
  High static pressure for more complex duct networks.

In a recent project on the North Shore , AirGreen combined ducted units for common areas and wall units for private offices, while maintaining efficient centralized management.

R-32 refrigerant safety: a proactive approach

The switch to R-32 involves specific safety requirements. Fujitsu has integrated concrete solutions that reassure both property owners and managers:

• Leak detection sensors integrated into ducted units

• Reduced refrigerant charge , limiting the risks

• Advanced safety options : audible and visual alarms, automatic shut-off valves with backup power supply

These devices facilitate the integration of the system into multi-unit residential buildings and commercial buildings subject to strict standards.

Energy efficiency, operation and subsidies

Beyond the theoretical figures, the J-7S stands out for its real-world efficiency . VRF modulation allows for:

• to avoid unnecessary cycles,

• to maintain a stable temperature,

• to reduce wear on components,

• to optimize annual energy consumption.

This model is eligible for provincial grant programs , including LogisVert , which significantly improves the return on investment when installed correctly.

In several projects monitored by AirGreen in Laval and on the South Shore , savings were observable from the first full season of use.

Common errors observed on Mini-VRF systems

Our field experience leads us to reiterate some common mistakes:

• poor planning of the zones

• choice of indoor units poorly suited to actual use,

• undersized ducts or piping,

• lack of long-term vision for future expansions.

A VRF system performs well only when it is well designed, well installed and well balanced .

Why AirGreen is the right partner for a Fujitsu VRF project

At AirGreen , every VRF installation is based on a rigorous methodology:

• detailed thermal analysis

• Optimized mechanical design,

• Installation by certified refrigeration technicians .

• strict compliance with electrical and environmental standards

• Support after installation and structured HVAC maintenance .

Our in-depth knowledge of the realities of Montreal , Laval , Longueuil , the North Shore and the South Shore guarantees tailored, sustainable and cost-effective solutions.

Conclusion

The FUJITSU AIRSTAGE J-7S VRF R32 – 48,000 BTU is an ideal solution for demanding projects requiring winter performance , installation flexibility , and advanced multi-zone management . When properly designed and installed, it provides consistent comfort, efficient operation, and peace of mind.

For a personalized analysis , a detailed quote , or information on installation and available subsidies, contact AirGreen Heat Pumps, Air Conditioning & Heating . Our team will support you at every stage of your HVAC project.