Installation of a Fujitsu wall-mounted heat pump in Rosemont–La Petite-Patrie

An optimized HVAC installation on a flat roof in an urban environment

At AirGreen , we regularly work in Montreal buildings with flat roofs, where installing a Fujitsu wall-mounted heat pump requires specific expertise. In this project located in Rosemont–La Petite-Patrie , our team installed a complete system to provide four-season comfort to occupants, while taking into account the constraints of a dense urban environment and a gravel roof typical of Montreal plexes.

Context and needs of occupants

The building, which consisted of several apartments, had a common problem: increasingly hot summers and harsh winters leading to high electricity bills. The residents wanted a solution:

• Energetically efficient,

• Silent inside,

• Resistant to Montreal's winter conditions,

• Eligible for government grant programs.

The Fujitsu wall-mounted heat pump has established itself as a strategic choice, thanks to its stable performance down to -26°C and its Energy Star certification.

Steps and technical details of the installation

Our intervention was divided into several phases:

1. Fixing outdoor units on flat roofs

   • The Fujitsu capacitors were placed on raised supports made of treated wood and metal rails , avoiding any direct contact with the gravel.

   • This method ensures better durability and reduces the risks associated with the accumulation of rainwater or ice.

2. Routing of refrigerant pipes

   • The pipes were grouped together and routed neatly along the roof, protected by insulated covers to prevent energy loss.

   • A discreet passage was created to reach the interior units via a wall opening, while maintaining the roof's watertightness.

3. Condensate management

   • Thanks to the natural slope of the roof and a well-designed gravity installation, no lifting pump was required, thus reducing future maintenance costs.

4. Securing against climatic conditions

   • The outdoor units have been oriented to maximize air circulation and avoid backdrafts.

   • Regulatory clearances have been respected to ensure optimal operation even in the event of accumulated snow.

Challenges encountered and solutions provided

One of the major challenges of this project was the limited roof space shared by multiple HVAC systems. To avoid interference:

• We have arranged for precise alignment of capacitors.

• Each device was installed on its individual support, ensuring stability and ease of future maintenance.

• Particular attention has been paid to soundproofing, so as not to disturb the occupants or the immediate neighbors.

Results obtained

Thanks to this installation, Rosemont residents now benefit from:

• Stable thermal comfort all year round ,

• From a reduction in their energy costs ,

• From a system that meets performance and safety standards,

• An enhancement of their accommodation through the presence of modern and reliable equipment.

The discretion of the Fujitsu system, both inside and out, helps improve the quality of life without altering the aesthetics of the building.

Grants and savings

The project is eligible for several grant programs, including:

• The provincial LogisVert program,

• The federal Greener Homes initiative.

We supported residents in their efforts, enabling them to reduce the net cost of installation while increasing the profitability of their investment.

AirGreen expertise in Greater Montreal

With this installation in Rosemont–La Petite-Patrie , AirGreen once again demonstrates its ability to carry out complex projects in urban environments. Whether you live in Montreal, Laval, Longueuil, on the North Shore or the South Shore , we put our expertise at your service to ensure optimal and lasting comfort, supported by the best brands of heat pumps.