Étude de cas : pourquoi une entreprise de Longueuil a remplacé toutes ses unités murales par des consoles de plancher ?
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Case Study: Why a Longueuil Business Replaced All Its Wall Units with Floor Consoles

A Strategic Shift to Floor Consoles: Enhanced Comfort and Optimized Efficiency in a Commercial Building in Longueuil

In this detailed case study, we explore a complex project carried out by AirGreen for a company located in Longueuil, on the South Shore of Montreal. The client had been operating for years with a system made up of traditional wall-mounted units, which had become inadequate in meeting their new expectations regarding thermal comfort, maintenance accessibility, energy performance, and interior aesthetics.

After a thorough analysis, we recommended the complete replacement of all wall units with high-performance floor-mounted consoles. This solution significantly improved comfort while ensuring better air distribution throughout the workspace.


Why switch from wall units to floor consoles?

A matter of accessibility and thermal comfort

The client occupied a two-level building with large windows and an open-concept layout, where heat tended to accumulate in the upper zones. The wall units, installed high up, were no longer effectively meeting their needs. The airflow struggled to reach work zones at floor level, resulting in cold spots in winter and poorly managed heat in the summer.

Floor consoles, installed at occupant level, allow for a more even distribution of warm or cool air, while also making routine maintenance much easier.


Solutions proposed by AirGreen

A personalized evaluation of the building

At AirGreen, we began with a complete thermal analysis of the premises and an inspection of the condition of the existing equipment. We identified:

  • Poor energy efficiency of the wall units,

  • Maintenance difficulties due to installation height,

  • Premature wear on several components,

  • General discomfort among employees.

Choosing Fujitsu KWL floor consoles – the optimal solution

We selected several Fujitsu KWL R-32 floor-mounted consoles, known for their reliability, quiet operation, and their ability to adapt to professional environments.

Key technical specifications:

  • BTU per unit: 12,000 to 18,000 depending on the zone,

  • Energy efficiency rating: A++ for both heating and cooling modes,

  • Refrigerant: R-32, more eco-friendly and efficient,

  • Compact design: ideal for offices and commercial spaces.

Each unit was perfectly integrated with the building layout, without interfering with foot traffic or room aesthetics.


Installation process in Longueuil

Planning and coordination with the business operations

We needed to carry out the installation without disrupting office activities. Our teams scheduled the work over two consecutive weekends, with meticulous preparation and close coordination with the building manager.

Key project phases

  1. Safe removal of old wall-mounted units,

  2. Adaptation of existing piping and recalibration of refrigerant lines,

  3. Installation of the new floor-mounted consoles with mounting along exterior walls for optimal airflow,

  4. Programming of smart thermostats for each zone,

  5. Comprehensive system testing and performance checks.


Results achieved

Immediate thermal comfort

Within the first hours of activating the new system, employees reported a noticeable increase in comfort, particularly thanks to stable ambient temperatures and virtually silent operation.

Easier maintenance

The building manager appreciated the ease of maintenance: filters are accessible without a ladder, and the consoles can be cleaned more frequently, reducing long-term maintenance costs.

Energy savings

Three months after the installation, the initial energy consumption data revealed an 18% reduction in the building’s energy bill compared to the previous year, thanks to the R-32 refrigerant’s efficiency and the system’s intelligent control.


Why this installation showcases AirGreen’s expertise

At AirGreen, we don’t just install HVAC systems – we optimize work environments and improve our clients’ daily lives. This Longueuil project is a perfect example: a well-thought-out, carefully executed installation that combines modern technology, installation precision, and measurable results.

We succeeded in:

  • Adapting our schedule to the client’s needs,

  • Proposing a custom-tailored solution,

  • Delivering a clean, on-time job,

  • Providing a durable, easy-to-maintain, high-performing system.


Common mistakes to avoid when modernizing an HVAC system

  • Replacing one unit with another without rethinking the whole system: It’s essential to assess overall efficiency.

  • Neglecting unit placement: Poor positioning reduces performance.

  • Ignoring occupant comfort: Too often, decisions are driven by price rather than real needs.

  • Overlooking future maintenance: A unit that’s hard to service quickly becomes a problem.


Our commitment on the South Shore

This Longueuil project illustrates our commitment to our clients on the South Shore. Whether in Longueuil, Brossard, Saint-Hubert, or Saint-Lambert, we apply our expertise to enhance every building, office, or residence.

We take pride in delivering turnkey projects with long-lasting, tangible results.


Thinking about upgrading your HVAC system in Longueuil or elsewhere?

At AirGreen, we put our expertise at your service. For a tailored installation, a full diagnostic, or a side-by-side system comparison, contact us today. Our experts are ready to answer all your questions.