FUJITSU AIRSTAGE J-7S Mini-VRF R32 | 36000 BTU - 7 Heads

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An advanced HVAC approach for multi-zone buildings in Quebec

In Quebec's climate, heating, ventilation, and air conditioning requirements are significantly higher than in many other regions. Long winters, periods of intense cold, rapid temperature fluctuations, and the diverse building stock present very real technical challenges. The FUJITSU AIRSTAGE J-7S Mini-VRF R32 | 36000 BTU - 7 Heads was specifically designed to meet these requirements, without compromising performance, reliability, or installation flexibility.

At AirGreen , we install this Mini-VRF system in projects where traditional solutions quickly reach their limits: multigenerational homes, renovated duplexes, apartment buildings, professional offices, clinics, local businesses, and mixed-use buildings. In these environments, the ability to manage several zones independently while maintaining stable performance down to -26°C becomes a determining factor, particularly in Montreal , Laval , Longueuil , on the North Shore , the South Shore , and in the Montérégie region .

The Mini-VRF logic explained simply, but concretely

A Mini-VRF system differs fundamentally from a simple wall-mounted multi-zone system. It relies on intelligent refrigerant flow management, capable of continuously modulating the power sent to each indoor unit according to the actual needs of each zone.

What this changes in a real building

• Each room or zone operates autonomously, without interfering with the others.

• Comfort is more stable, even when some areas are heating while others are maintaining their temperature.

• The number of start and stop cycles is reduced, which decreases mechanical wear.

• Electricity consumption is better distributed and more predictable.

In several multi-unit residential buildings in Montreal North and Saint-Hubert , AirGreen observed a marked improvement in thermal stability compared to conventional multi-zone systems, particularly on days of extreme cold combined with sustained wind.

A power output of 36,000 BTU that is actually usable in winter

The technical specifications never tell the whole story. What really matters is the system's ability to maintain its performance when the outside temperature drops drastically.

Essential operating data

• Nominal cooling capacity : 36,000 BTU

• Guaranteed operation in heating mode down to -26°C

• Available power at -8°C : approximately 26,200 BTU

• Available power at -15°C : approximately 36,400 BTU

• R-32 refrigerant , more efficient and with a lower environmental impact

In practice, this means that the system continues to provide reliable heating even during the critical periods of January and February, when many less suitable equipment starts to lose efficiency or requires costly supplemental heating.

Energy efficiency and reduced operating costs

The FUJITSU AIRSTAGE J-7S also stands out for its high energy efficiency. Its SEER2 , HSPF2 , EER2 ratings and low-temperature COP reflect its ability to produce more heat or cooling for every kilowatt consumed.

For homeowners in Laval and on the South Shore , this translates concretely into:

• a more stable electricity bill in winter,

• improved predictability of annual costs,

• added value when reselling or renting the building.

The system is eligible for the LogisVert grant , with an amount of up to $3,144 , subject to project compliance. At AirGreen, we integrate this reality from the design phase to maximize eligibility without last-minute adjustments.

Installation flexibility that is rarely matched

One of the major advantages of the Mini-VRF J-7S lies in its piping and elevation capabilities, often crucial in renovation projects.

• Very high total pipe length possible , ideal for multi-story buildings

• Significant height difference between indoor and outdoor units

• Compact exterior design , allowing installation under a window, on a balcony, or in a confined space

In several projects carried out by AirGreen in downtown Montreal , this compactness made it possible to avoid major structural work, reducing both costs and delays.

A wide range of indoor units for customized comfort

The FUJITSU AIRSTAGE J-7S allows you to combine different types of indoor units within the same system, offering a level of design freedom rarely achieved.

Configurations commonly used by AirGreen

• Wall units for bedrooms, private offices and small rooms

• Slim ducted units for open spaces requiring discreet integration

• Compact cassettes in commercial suspended ceilings

• Air handling units for distribution via existing ducts

In a renovated residential building in Outremont , AirGreen used a combination of ducted units for common areas and wall units in the apartments, while maintaining a clean interior aesthetic.

Safety, compliance and long-term reliability

The use of R-32 is accompanied by integrated safety measures designed to limit risks in the event of a leak, particularly in multi-zone environments.

• Reduced total refrigerant charge

• Integrated detection sensors on some units

• Automatic circuit shutdown options in case of an anomaly

These features are particularly relevant for residential and commercial buildings, where compliance and peace of mind for occupants are essential.

Common errors observed in Mini-VRF projects

With field experience, AirGreen finds that poor performance is rarely due to the equipment itself.

• Approximate sizing of the areas

• Poor choice of indoor units

• Lack of precise calculation of thermal loads

• HVAC installation performed without specific experience Mini-VRF

A Mini-VRF project requires a rigorous approach, both in design and execution.

The AirGreen approach: expertise, methodology and transparency

Choosing AirGreen means benefiting from comprehensive support:

• Detailed analysis of the building's actual needs

• HVAC design optimized according to usage and occupancy

• Installation by experienced refrigeration technicians

• Clear, detailed quotes with no surprises

• Structured and accessible after-sales service

We operate daily in Montreal , Laval , Longueuil , on the North Shore and the South Shore , with in-depth knowledge of local and regulatory realities.

Conclusion

The FUJITSU AIRSTAGE J-7S Mini-VRF R32 | 36000 BTU - 7 Heads stands out as a high-performance HVAC solution for demanding multi-zone projects. Its ability to maintain high performance in extreme cold, its installation flexibility, and its energy efficiency make it a strategic choice for residential and commercial buildings in Quebec.

To obtain a personalized quote , a complete technical analysis , or to discuss the best possible configuration for your project in Montreal , Laval , Longueuil , on the North Shore or South Shore , contact AirGreen directly. Our team is ready to transform your HVAC project into a sustainable, reliable solution perfectly suited to your needs.