In Ville-Marie, we often work in bright apartments with large windows and open-concept layouts, and a well-known reality: comfort varies rapidly depending on sunlight, floor level, and insulation. On this project, our AirGreen team installed (and commissioned) aSharp wall-mounted heat pump , a solution perfectly suited to Montreal's summer air conditioning needs and efficient heating requirements during the colder months.
What the image reveals about the project's context
This is clearly an urban residential environment: large window, clean lines, low ceilings typical of condos/apartments, and a technical access point (open hood) with a ladder for working at height. This type of configuration is common in Ville-Marie, where the objective is twofold:
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gain comfort without cluttering the space
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Install cleanly , without compromising on aesthetics or accessibility for maintenance.
Type of machine installed
This is a wall-mounted heat pump (mini-split / wall unit) . It is the most logical option in this type of dwelling unit, especially when there is no ductwork or when precise room-by-room control is desired.
Why this choice works particularly well in urban environments:
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excellent energy efficiency in air conditioning and heating mode
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Stable comfort despite rapid temperature variations (sun, cooking, occupancy)
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Silent operation, essential in condos/apartments
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Quick installation, with minimal impact on interior finishes
Make and model
The brand supplied manually is Sharp (main reference).
The exact model isn't visible in the photo, but the size and positioning are a good match for a residential installation in the Sharp ZU1 range (R-32 refrigerant) , a consistent and common choice for this type of project (12,000 to 24,000 BTU depending on the load calculation). In practice, at AirGreen, sizing is always based on the surface area, sunlight exposure, floor level, and insulation—particularly important in Ville-Marie.
Key installation details (and why they matter)
Even if a wall unit "seems simple," the result depends on precise details. Several points stand out here:
1) High positioning and clearances
The unit is installed near the ceiling , which promotes:
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better air circulation in the room
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less direct airflow at occupant level
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more stable performance (better ambient temperature reading)
We also ensure that the recommended clearances around the unit are maintained to avoid air recirculation and facilitate maintenance.
2) Access for maintenance assumed (hood open)
The photo shows the unit with the hood open: this is typical of a stage of:
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connection check
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drainage inspection
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Connection and safety checks
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level and fixing adjustments
This point is important because a well-installed system must also be easy to maintain , especially in a condo where access is sometimes more restrictive.
3) Proximity to a window: managing comfort and condensation
Installing near a window is common in Montreal. We pay attention to:
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the direction of the airflow (so as not to directly “hit” a cold area in winter)
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humidity management and dehumidification mode in summer
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condensation prevention (slope, drainage, insulation of sensitive sections)
4) Working at height and clean finish
The existing ladder indicates an installation/overhaul at height: this implies a careful approach to:
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preserve the walls and finishes
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ensure a solid fixing (structure behind the gypsum)
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reduce vibrations and resonances (golden rule in apartments)
Expected performance in Montreal: summer comfort, intelligent heating during the shoulder seasons
A properly sized Sharp wall-mounted heat pump quickly provides:
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stable air conditioning during heat waves and humid periods
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Dehumidification that actually improves comfort (and perceived air quality)
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efficient heating in autumn and spring, reducing the use of electric baseboard heaters
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a more consistent temperature, especially in open areas
In Ville-Marie, this is precisely what most customers are looking for: a solution that adapts quickly, quietly, and remains economical to use.
Common mistakes that are systematically avoided
With wall-mounted units, problems rarely originate from the unit itself, but rather from the installation. The most common errors corrected in Montreal are:
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Unit too low: discomfort and sensation of direct airflow
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Poorly designed drainage: drips, odors, dampness near the wall
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Incorrectly adjusted airflow direction: persistent hot/cold spots
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Approximate sizing: short cycles, noise, degraded efficiency
At AirGreen, we aim for an installation that goes unnoticed... except when you realize, day after day, that the house is finally comfortable.
Recommended maintenance to maintain performance
To maintain performance and extend lifespan:
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Clean the filters regularly (simple but crucial).
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Complete periodic maintenance (coil, turbine, drain, general inspection)
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checking operating parameters before summer and before winter
Clean maintenance = better performance, less odor, less noise, and better air quality.
Conclusion
This Sharp wall-mounted heat pump installation in Ville-Marie perfectly illustrates the Montreal reality: an urban space where comfort, quiet operation, and discreet integration are desired. By choosing a Sharp solution (such as the compatible ZU1 model) and adhering to the guidelines for positioning, clearance, drainage, and finishing, a reliable, clean, and pleasant result is achieved every day—summer and winter.