When a client contacts us to efficiently heat and cool a home on the North Shore , it often turns out that a single unit isn't enough to meet all the desired comfort levels (multiple floors, enclosed rooms, remote areas, varying sun exposure, etc.). In Sainte-Dorothée (Laval) , our AirGreen team recently completed a residential installation using two Zephyr wall-mounted heat pumps (dual configuration, with two outdoor units), with a very precise approach: performance, durability, aesthetics, and reliability in Quebec conditions.
The photos clearly show an installation being commissioned: pressure manifold , vacuum pump , service hoses, and above all, a perfectly aligned outdoor installation on robust wall brackets . These details speak volumes about the quality of workmanship—and the customer's peace of mind.
A simple, efficient residential HVAC solution well-suited to Laval homes
Here we have a wall-mounted heat pump (mini-split/wall unit) — a very popular technology in Montreal and Laval because it offers:
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Efficient heating during the cold seasons (and very economical in the shoulder seasons)
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Stable and quiet air conditioning in summer
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Zone-based control : each space can be managed according to needs
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Installation is less invasive than a central system (no large pipes to add)
In this project, the chosen configuration includes two Zephyr outdoor units installed side by side. In practice, this type of installation is often chosen when:
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We want two completely independent zones (e.g., ground floor + first floor),
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We want to optimize performance by zone.
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or when the internal configuration of the building is better suited to two separate circuits.
Installed brand: Zephyr
Since the brand name was provided manually, we are using it as a reference: it is indeed Zephyr equipment.
Model
The exact model is not clearly visible in the photo. We therefore deliberately remain precise without making any assumptions: Zephyr new generation wall-mounted heat pump , selected and sized according to the actual loads of the building (surface area, insulation, orientation, lifestyle, etc.).
Visible installation details: what you notice immediately (and why it's important)
Even without seeing the inside, the outside gives several very concrete clues about the rigor of the work.
1) Outdoor units on wall brackets: protection against snow and improved longevity
The two Zephyr condensers are mounted on securely anchored metal wall brackets . This is an excellent choice in Quebec because:
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we keep the unit elevated : less risk of being buried during snowstorms;
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The device is protected from accumulations of water , mud and ice on the ground;
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Maintenance is made easier (clearance, visual inspection, cleaning).
This type of installation is also ideal when landscaping needs to remain clean: flowerbeds, hedges, traffic, lawnmower, etc.
2) Alignment, clearances and airflow: performance also depends on this
The units are installed with consistent clearances for air intake and exhaust. A condenser that is too close or poorly positioned can lose efficiency and put unnecessary strain on the system.
At AirGreen, we don't just install a machine: we ensure that the air circulates properly, that future service will be possible, and that the device will not be choked by the environment.
3) External electrical disconnect switch: safety + compliance
On the right, you can see an electrical disconnect box near the units. This is essential for:
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safety during maintenance,
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compliance with standards
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and rapid intervention in case of diagnosis.
A proper installation is also a “logical” installation for the technicians who will come later.
4) Professional commissioning: vacuum, pressures, sealing
The visible manifold and vacuum pump indicate a structured commissioning process :
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Vacuuming to remove moisture and contaminants
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leak testing,
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Pressure control and stabilization.
This is one of the key differences between a quick fix and a long-lasting installation. Moisture in the lines, for example, can cause long-term problems. Therefore, we take these steps very seriously and systematically.
Why this type of Zephyr configuration is interesting for a house in Sainte-Dorothée
Saint Dorothy often combines houses with:
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several levels,
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open areas + closed rooms,
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facades exposed to the sun,
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and sometimes very different needs between day and night.
A “dual” approach (two outdoor units) typically allows:
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improved modularity ,
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improved stability and comfort ,
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and often a “gentler” operation (fewer aggressive cycles), therefore quieter and more pleasant.
In terms of usage, the customer generally benefits from:
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immediate comfort with air conditioning in the summer (better controlled humidity),
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efficient heating in autumn and spring,
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and a significant reduction in reliance on other sources of heating.
The AirGreen approach: performance, finish and peace of mind
What we particularly like about this project is that everything has been designed to be:
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visually clean (alignment, supports, organized cabling),
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easy to maintain (access, disconnect switch, clearances),
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sturdy enough for winter (raising, installation),
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reliable in the long term (full commissioning).
Beyond the Zephyr brand, it's the quality of the installation that makes the difference: a high-performance heat pump that's poorly installed loses much of its effectiveness. Conversely, a methodical installation maximizes efficiency, reduces the risk of unwanted noise, and extends the lifespan.
Conclusion: a clean, efficient Zephyr installation perfectly suited to Greater Montreal
This installation in Sainte-Dorothée (Laval) illustrates exactly the kind of residential project we carry out every week: a modern HVAC solution, designed for the real comfort of the occupants, and executed with high standards.
If you are looking for a Zephyr wall-mounted heat pump (or a multi-zone/dual-zone configuration depending on your home), our AirGreen team will assist you from A to Z: needs analysis, equipment selection, clean installation, complete commissioning and usage advice to maximize efficiency.