A precise interior installation, designed to maximize comfort in a typical Outremont apartment, with old moldings and built-in storage, without compromising aesthetics.
A project where precision rhymes with discretion
At AirGreen , we adapt each HVAC installation to the actual architecture of the home. Here, the major constraint is to integrate the wall-mounted head above a closet opening with folding doors, under a ceiling decorated with moldings. The client's objective: four-season comfort , minimal noise level and careful visual integration , while maintaining easy access to the filters for HVAC maintenance .
Why a Sharp wall-mounted heat pump in this context?
Sharp's new generation wall-mounted heat pumps ( R-32 refrigerant) combine inverter modulation, high seasonal efficiency and a compact size—perfect for apartments in Outremont, Plateau-Mont-Royal or Rosemont where every inch counts. In real-life use:
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they heat efficiently in mid-season and during the severe cold weather common in Greater Montreal ;
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they dehumidify in summer, a guarantee of superior perceived comfort;
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They maintain a contained interior noise level , essential in rest rooms.
Interior installation architecture
We chose a mono-split configuration (one head – one external condenser) to concentrate the power in the main living area. Inside, the installation follows four principles:
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Optimized height
The head is installed in the upper part, under the molding, at a sufficient distance from the ceiling to allow air recirculation and correct reading of the sensors. This height promotes controlled stratification and limits short cycles . -
Clear airway
Positioned above the closet, the blower directs air along the ceiling before redistributing it into the living room. Doors do not obstruct the flow: there are no obstacles in the blowing cone, therefore uniform and silent diffusion . -
Compact technical path
The refrigerant connections and the condensate drain descend through the discreet white casing visible on the left bank, then pass through the load-bearing wall to the outside. This very short route limits pressure losses, protects the COP and reduces the visual footprint. -
Accessibility and maintenance
The clear front panel allows the panel to be fully opened for filter maintenance and card inspection. The connectors are neatly grouped on the service side for quick interventions.
Technical details delivered
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Single wall-to-wall drilling with ring and seal: continuous air and water tightness.
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Gravity slope of the drain towards the outside: no pump, therefore silence and reduced maintenance.
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Continuous insulation on the connections, without gaps at the curves: no parasitic condensation in the cupboard.
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Controlled service loop : no stress points on the connections.
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Communication and power supply in accordance with manufacturer requirements, with clear identification of conductors.
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Commissioning by deep vacuum , leak test and superheat/subcooling check; basic instructions given to the customer.
Sizing: the AirGreen method
We never size "by eye." Before recommending capacity (most often 9,000, 12,000, 18,000 or 24,000 BTU), we validate:
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housing envelope (brick wall, shared wall, quality of windows);
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actual use of the rooms (occupation, internal supplies, open kitchen);
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solar exposure and gains;
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permissible noise depending on the configuration (adjoining room, office).
This calculation avoids oversizing (discomfort and premature wear) as well as undersizing (lack of heat on very cold nights).
Expected results for the client
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Stable heat in winter, fine modulation around the set point, disappearance of jolts.
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Fresh without drafts in summer thanks to sweeping and dehumidification.
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Low noise : the blower adjusts its speed, ideal for a bedroom or office.
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Savings vs pure electric heating, especially visible between December and March.
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Aesthetics : discreet cowling, no visible bleeding, respect for the moldings.
What makes the difference in an Outremont apartment
Old buildings require irregular walls , prominent moldings , and built-in storage . Our teams anticipate:
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the ceiling reserve to avoid the “glued box” effect which stifles the intake;
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free travel of the flaps for full vertical sweep;
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protection of moldings during drilling;
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reduction of structural vibrations (pads, tightening to the correct torque).
Result: an integration that respects the spirit of the place while delivering the expected performance.
Grants and Eligibility
Recent wall-mounted heat pumps , particularly those with R-32 and high winter efficiency, are likely to be eligible for energy efficiency assistance in Quebec. Our team verifies, for Montreal, Laval, Longueuil, North Shore and South Shore :
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Energy Star compliance where applicable;
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low temperature heating capacity (−25°C / −30°C depending on the series);
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the installation documentation required by the programs.
We support the client from pre-file to post-installation proof .
HVAC Maintenance: Simple and Essential
A regular maintenance plan maintains performance and extends lifespan:
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vacuuming/cleaning filters every 4 to 8 weeks;
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annual inspection of exchangers , drain and line insulation ;
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checking connections and operating values;
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Check the outside drain in the fall to prevent the drain from freezing.
We offer AirGreen packages suitable for both small and large homes.
Good practices and mistakes to avoid
To do
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leave 20–30 cm free under the ceiling to encourage air intake;
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keep the closet opening clear so that the airflow does not encounter any obstacles;
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adjust the shutters to suit the geometry of the room.
To avoid
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wedge the head under a molding that is too low (risk of recirculation of hot air);
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run the drain without sufficient slope (leaks, odors);
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ignore the manufacturer's recommended clearances .
What you can expect from AirGreen
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Thermal study and documented capacity recommendation;
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Implementation plan taking into account aesthetics and acoustics;
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Certified, clean installation , with tests and commissioning reports;
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Support for grants where the range is eligible;
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After-sales service and parts available quickly.
Are you in Montreal, Laval, Longueuil, North Shore or South Shore?
We understand the local constraints: brick facades, narrow streets, flat roofs, limited parking, condominiums with schedules to respect. Whether your project is in Outremont , Villeray , Le Sud-Ouest , Brossard , Sainte-Dorothée or Repentigny , we apply the same rigor to guarantee lasting comfort .
Express FAQ
Is hanging your head over a cupboard ideal?
Yes, if sufficient clearance and unobstructed airflow are maintained. The air flows along the ceiling and then naturally descends, improving uniformity.
Which capacity to choose?
We validate the thermal load before ordering. In this type of apartment, 9,000 or 12,000 BTUs are often sufficient, but only a study can confirm the correct value.
And the noise?
Recent Sharp series are very quiet at cruising speed. The perceived level depends mainly on the size and blower settings.
Complicated maintenance?
No. Simple actions by the user and an annual visit by our technicians maintain performance and reliability.
Conclusion
This Sharp wall-mounted heat pump installation in Outremont demonstrates our expertise: elegant integration into an architecture with moldings, short technical path , silent gravity drain and controlled commissioning. Do you want the same result in Montreal , Laval , Longueuil , on the North Shore or the South Shore ? We size, install and maintain your system with the AirGreen requirement.