A typical Montreal apartment with crown molding, a light-filled living room/office, and a clear need: consistent comfort year-round without increasing energy consumption. Here, we're installing a Gree R-32 wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension as the primary summer cooling solution and an energy-efficient backup to the existing heating system.
An impeccable interior installation designed for everyday life
Controlled positioning and blowing
The wall head is installed at the top , under the molding, to promote airflow that runs along the ceiling before gently descending. This orientation:
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avoids direct airflow onto the living area and office;
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homogenizes the temperature from floor to ceiling;
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allows easy access to filters for HVAC maintenance .
The Gree R-32 's compact size fits discreetly against the wall, without encroaching on window treatments or furniture space.
Clean drilling and short path (back-to-back)
The back-to-back configuration limits the length of refrigeration lines to only 2–3 m . We install:
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sheath and vapor barrier at the piercing to prevent any moisture migration;
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external chute matching the facade for a neat finish;
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anti-vibration loop and drop arm protecting the expanders from mechanical stress.
Noiseless condensate management
The evacuation is gravity-fed , with a continuous slope up to the authorized external discharge. This choice eliminates the maintenance and noise of a lifting pump. A siphon is provided if internal connection to prevent any return of odors.
What the Gree “R-32” brings to a Montreal home
Daily performance and comfort
The new generation Gree R-32 wall units modulate finely thanks to an inverter compressor. Result:
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long cycles at low speed, therefore silence and setpoint stability ;
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less mechanical wear and mid-season savings;
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precise blowing avoiding cold drafts in summer and the feeling of cold feet in winter.
R-32 offers better volumetric efficiency and a reduced GWP compared to R-410A: a relevant choice to reconcile performance and regulatory trajectory in Montreal, Laval, Longueuil, North Shore, South Shore .
Suitable BTU sizing
For a standard living room/office with double or triple glazing, we generally recommend 9,000 to 12,000 BTU . AirGreen sizing takes into account:
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orientation and solar gains ;
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the sealing of the envelope (recent doors/windows, weatherstripping);
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internal gains (IT equipment, occupants);
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thermal continuity with adjacent rooms.
A properly sized appliance avoids short cycles , reduces noise and improves moisture removal.
AirGreen HVAC Installation Methodology (Summary)
Preparation and safety
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Protection of passage areas, covers and cleanliness mats.
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Checking the electrical gauge , grounding and location of the external disconnection .
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Tracing of drillings avoiding studs, networks and delicate finishes.
Refrigeration lines and insulation
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UV insulated annealed tubes with respected bend radius; calibrated and lubricated flared ends.
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Torque tightened according to Gree instructions; nitrogen tested (up to 500 psi) to ensure tightness.
Vacuuming and charging
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High vacuum draw (< 500 microns stabilized), ascent control.
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Load check based on actual length and altitudes; superheat/subcooling reading.
Commissioning and adjustments
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Cooling and heating tests: blowing temperatures, air flow, noise at low/medium speeds.
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Scenario settings (sweeping, auto restart, optimized defrosting).
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Submission of a photo report and parameters to the client.
Results in the Villeray–Saint-Michel–Parc-Extension apartment
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Air conditioning : uniform fresh air without drafts, rapid reduction in humidity, increased comfort in the office area.
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Heating : in the off-season, the heat pump covers most of the needs; resistive heating remains a supplement during extreme cold.
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Acoustics : the internal head remains very discreet at reduced speed; the external unit is installed with regulatory clearances and silent blocks to cut vibrations.
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Aesthetics : aligned chute, no visible bleeding, preservation of moldings and wall finish.
HVAC Maintenance: The Key to Long-Lasting Performance
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Every 2–3 months in summer : rinse the filters and visually check the condensate drainage.
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In spring : gentle cleaning of the external exchanger, checking of the silent blocks and tightening of the screws.
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Annually : complete AirGreen maintenance (intensity measurement, insulation control, inspection of the dippers, parameter reading), with priority intervention during peak periods thanks to our HVAC maintenance contract .
Grants and administrative procedures
Depending on the performance criteria achieved by the wall-mounted heat pump and the use of the home, financial assistance may apply. Our team validates eligibility , prepares proof of installation (photos, serial numbers, parameters) and supports you to optimize the net cost of the project in Montreal, Laval, Longueuil, North Shore, South Shore .
Why AirGreen for your next project?
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Local expertise in Montreal buildings (plexes, condos, townhouses, flat roofs).
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Recent multi-brand selection : Gree , Sharp , Fujitsu , Midea in R-32 / R-454B to aim for the best efficiency within your budget.
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Transparent process : load calculation, clean HVAC installation , instrumented commissioning, then maintenance .
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Responsive after-sales service with priority parts and assistance.
Site sheet — key points
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Type : Gree wall-mounted heat pump ( R-32 range , Inverter).
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Location : Villeray–Saint-Michel–Parc-Extension (Montreal).
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Interior installation : high head under molding, indirect blowing.
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Route : back-to-back , ~ 2–3 m of isolated lines, clean outside chute.
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Condensates : gravity with controlled slope.
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Benefits : consistent comfort, low noise level, controlled consumption.
Are you hesitating between a wall-mounted air conditioner and a heat pump ? Our advisors will assess your space and propose a customized configuration, from BTU selection to commissioning . Contact AirGreen for a clear quote and long-lasting installation throughout Greater Montreal.