Installation of a Sharp (R-32 series) wall-mounted heat pump in Le Sud-Ouest

Four-season comfort in a modern Montreal condo

In a recent building in Southwest Montreal , our team installed a Sharp R-32 wall-mounted heat pump for a co-owner who wanted a discreet, efficient solution perfectly suited to urban living. The chosen location—a sheltered loggia overlooking the living area—required compact ductwork, aesthetic protection, and minimal daily noise levels. We designed the HVAC system with these architectural and usage requirements in mind, without compromising on heating or cooling performance.

Why Sharp R-32 for a Southwest condo?

The Sharp R-32 range combines high efficiency , reliability in cold climates and careful integration in dense residential environments. The R-32 fluid reduces the environmental footprint and improves thermal exchanges compared to R-410A, which results in lower consumption and finer modulation in mid-season.

Range highlights:

• Inverter technology ensures precise power adjustment, resulting in fewer on/off cycles and increased component longevity.

• High energy efficiency (SEER/HSPF) , favorable to Quebec subsidy programs when the configuration meets the required thresholds.

• Quiet operation of the outdoor unit, ideal for balconies and terraces close to living areas.

• Careful air treatment on the interior side (advanced filtration and comfort functions), appreciated in compact spaces.

Context and preparations: a clean and precise construction site

The condo features a ventilated metal panel facade and low-threshold exterior joinery. We plan a short, linear route for connections to:

1. Reduce refrigeration pressure losses and optimize performance.

2. Preserve the aesthetics of the facade with discreet cladding in the same shade.

3. Minimize noise pollution for occupants and neighbors.

A survey of existing openings, uprights, sealing thresholds and the electrical network is carried out in order to position the conduit outlet outside sensitive areas (joints, frames and weather shields).

Technical details of the installation

Support and positioning of the outdoor unit

• Mounting on a low wall console , stiffened and leveled, to free the floor of the loggia and maintain a guard above water flows.

• Anti-vibration pads to cut off the transmission of vibrations to the metal facing.

• Service clearances respected to ensure adequate airflow and future maintenance.

Refrigeration and aesthetic journey

• Narrow anthracite grey capping , vertical then horizontal, integrated into the lines of the facade for an almost flush finish.

• Estimated total length of approximately 2.5 to 3.5 m between outdoor unit and indoor head (depending on the layout), promoting efficiency and rapid response of the system.

• Controlled bending radius of the tubes to preserve the integrity of the insulation and avoid any fatigue points.

Condensate management and drilling

• Gravity drainage facing outwards, with a constant slope and a specific weatherstripping when passing through the wall.

• Clean drilling Ø 65–75 mm depending on the duct, sealed using a bulkhead and weatherproof compatible sealant to protect the building envelope.

Power supply and electrical protection

• Sealed disconnect box in the immediate vicinity of the unit, accessible from the balcony for any intervention.

• Dedicated circuit compliant with RBQ specifications and manufacturer requirements; continuity and polarity tests before gassing and start-up.

Commissioning and controls

• Nitrogen leak test then deep vacuum to the recommended thresholds.

• Check load and subcooling according to the ambient temperature of the day.

• Heating mode calibration and inverter modulation test to validate the power ramp and oil return.

Construction site challenges and AirGreen solutions

1. Limited space on the loggia : we chose a compact console and a capping outlet aligned with the panel joints to maintain the passage width and the visual line of the joinery.

2. Metal facing : to avoid any deformation, precise doweling in the solid rear structure, with insulating spacers limiting vibration bridges and galvanic corrosion.

3. Immediate neighborhood : blowing orientation studied to direct the air flow freely without recirculation towards the bay window, reducing the risk of frost in winter and unnecessary restarts.

Result: comfort, silence and controlled energy bills

The co-owner benefits from four-season comfort : gentle and uniform cooling in summer, stable heating in winter without temperature fluctuations, and reduced consumption thanks to continuous modulation. The loggia installation protects the unit from direct weather, extending its lifespan. The visual integration – matching capping , rigorous alignments , discreet wiring – fully respects the contemporary architecture of the building.

Possible grants and eligibilities

Depending on the capacity chosen and certified performance, the latest generation of R-32 wall-mounted heat pumps may be eligible for financial assistance in Quebec. The criteria usually relate to efficiency coefficients and heating capacity in cold weather . Our team supports the client to document compliance , prepare claims files and maximize returns. We cover all of Greater Montreal — Montreal , Laval , Longueuil , North Shore and South Shore .

Tips for using a condo

• Controlled Auto Mode : use dedicated Hot or Cold mode in intermediate periods to avoid frequent inversions.

• Stable set temperature : 21–23°C when occupied, slight reduction at night.

• Filtration : regular cleaning of interior filters to preserve air flow and energy efficiency .

• Clearance around the outdoor unit : Keep the area clear for proper heat exchange and safety.

AirGreen Preventive Maintenance

Annual HVAC maintenance includes electrical inspection , evaporator and condenser cleaning , pressure monitoring , condensate drain inspection, and comfort setting updates. This routine extends the life of the wall-mounted heat pump , maintains original performance , and secures the manufacturer's warranty.

Why entrust your project to AirGreen?

• Urban expertise : we understand the constraints of co-ownership , the limited spaces and the acoustic requirements of central districts.

• Careful finishing : coordinated cappings , waterproof drilling , robust supports and invisible wiring .

• Complete support : from capacity selection to grant assembly , including commissioning and maintenance .

Are you planning to install a wall-mounted heat pump in a condo in Montreal , Laval , Longueuil , on the North Shore or the South Shore ? Our team offers you a tailor-made, efficient and durable solution, perfectly integrated into your building.