Background, objectives and promise of comfort
In Villeray–Saint-Michel–Parc-Extension, a homeowner wanted to air-condition a living room exposed to afternoon sun and benefit from reliable heating support in spring and fall. Our mission: to propose a new-generation Gree R-32 heat pump , sized for the housing envelope, and to create a discreet, quiet, and easy-to-maintain interior HVAC system with a short refrigeration path to the outside.
Why a Gree R-32 in this urban context?
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Optimized seasonal performance thanks to R-32 (A2L) refrigerant: reduced loads and excellent efficiency for heat waves as well as cool nights.
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Fine modulation of the compressor and ventilation: stable temperature, very low noise level — an asset in Montreal 's quiet plexes and alleys.
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Easy maintenance : clear access to filters and covers, which simplifies annual HVAC maintenance .
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Discreet design : white fairing with soft lines, perfectly consistent with pale gray wall paint and sheer curtains.
Study of the part and installation of the interior head
We position the head above the window , on the right side near the corner of the wall. This placement has several advantages:
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Optimal airflow : the airflow follows the long wall and descends to the center of the room; the cold fallout does not directly hit the sofa or the office area.
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Direct through-wall access : the refrigeration connections and the condensate drain exit on the right side to the outside, limiting the length (approximately 2 to 4 m depending on the thickness of the masonry) and maximizing efficiency.
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Visual discretion : when at rest, the shutter remains flush; the unit fits into the framework of the woodwork and window dressings.
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Conflict prevention : we maintain adequate clearance with the blind rod and chain to avoid any obstruction of the vanes.
Height and orientation adjustments
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Installation height : close to the ceiling to promote stratification and the suction of hot air in air conditioning mode.
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Orientation of the shutters : slight inclination towards the center of the room in summer; in mid-season, more horizontal sweep for even additional heating .
Drilling, crossing and interior finishing
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Single drilling Ø 65–75 mm with controlled slope towards the outside: this allows gravity evacuation of condensates, without a lifting pump (less maintenance, zero additional noise).
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Vapor barrier sleeve and peripheral sealing inside the wall to prevent air infiltration and interstitial condensation.
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Minimal internal chute : the head is placed at the ideal height, which avoids visible drops; the aesthetics of the part are preserved.
Refrigeration connections, testing and vacuuming
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Refrigeration copper cut and flared on site; tightening torques respected according to Gree specifications.
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Nitrogen leak test (stabilized pressure) then deep vacuum drawing down to micron threshold to completely dry the circuit.
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Continuous insulation of cold lines with high density sheathing, anti-UV tape and clean ties on the back of the head to avoid any internal dew point.
Electrical connections and compliance
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Dedicated power supply from the outdoor condenser (mini-split standard) with disconnect box installed outside, UV-resistant sheathed cable and verified earthing.
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Separation of routes with other services (sockets, telecoms) visible under the window to eliminate interference and respect safety.
Condensate management and trace prevention
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Gravity drain with straight outlet and continuous slope; discreet external jet cutter to prevent splashing on the brick and rebounding on the sill.
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Recommendations to the customer: in summer, keep the drain path free of dust or cobwebs to maintain a smooth flow.
Commissioning and functional checks
At startup, we proceed to:
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reading evaporation/condensation pressures and temperatures,
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subcooling and superheat control,
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the measurement of the blowing delta and the noise perceived in the room,
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validation of the dehumidification mode for heavy days,
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remote control configuration (time programming, night).
Observed result: a rapid drop in interior temperature and remarkable stability without unpleasant air currents, even near net curtains.
Salient installation details observed on site
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Gree wall-mounted fan in a compact format, installed above a window : the ideal choice for freeing up useful walls and propelling air into the heart of the room.
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Short route of connections to the outside, single drilling and gravity drain - the most reliable and quiet configuration.
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Aesthetic integration : white tint of the unit matching the ceiling and soft contrast on the gray wall; no visible cable duct inside.
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Montreal plex atmosphere : bright room on local street; the layout respects neighborhood constraints (quiet, easy service).
Benefits for the occupant
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Immediate comfort in summer with a consistent temperature in the living area, without overcooling near the window.
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Economical supplemental heating in spring and fall to relieve electric baseboards.
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Quiet operation : ideal for teleworking, children's naps and evenings with the windows open.
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Controlled operating costs thanks to the variable speed compressor and more efficient R-32 refrigerant .
HVAC Use and Maintenance Tips
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Filters : rinse or vacuum every 4 to 8 weeks during use.
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Annual maintenance by our technicians: gentle washing of the external exchanger, electrical tests, checking of refrigeration parameters and drain slope.
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Modes : use Auto Fan in air conditioning to limit temperature variations; use Drying mode on humid days.
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Winter : if the condenser is on brackets, maintain snow clearance; never obstruct the air outlet.
Potential Grants and Eligibility
Recent Gree R-32 wall-mounted heat pumps offer performance that can meet the criteria of certain assistance programs in Quebec, depending on the low-temperature heating capacity and certifications of the chosen model. Our team assists customers to verify eligibility and prepare applications in Montreal , Laval , Longueuil , on the North Shore and the South Shore .
Our AirGreen method in Villeray, Rosemont, Le Plateau and surrounding areas
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Accurate sizing (BTUs adapted to surface and orientation).
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Minimal route of connections to preserve efficiency and longevity.
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Clean finishes and visual integration that respects the interior architecture.
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Responsive local service : visits, installation and HVAC maintenance provided by specialized teams in Greater Montreal.
Are you planning a similar HVAC installation in a Villeray plex or a condo in Ahuntsic, Outremont, or Ville-Marie? We recommend recent Gree R-32 heat pumps to combine comfort, discretion, and savings, with impeccable technical execution from the first drilling to commissioning.