Installation d’une Gree (gamme R-32) thermopompe murale à Rosemont–La Petite-Patrie
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Installation of a Gree (R-32 range) wall-mounted heat pump in Rosemont–La Petite-Patrie

A wall-mounted headboard perfectly integrated above a closet for four-season, discreet and efficient comfort

At AirGreen , we recently installed a Gree wall-mounted heat pump in a home in the Rosemont–La Petite-Patrie sector of Montreal . The client wanted a compact, quiet, and well-designed HVAC solution for a multifunctional room open to the outdoors. We positioned the indoor head above a built-in closet , just below the ceiling, to optimize diffusion and preserve the room's aesthetics.


Why the Gree wall-mounted solution (R-32) is essential here

The Gree R-32 range perfectly meets the needs of a Montreal apartment: high seasonal efficiencies , DC inverter modulation, reliable heating in cold weather and precise air conditioning in the summer. The R-32 refrigerant reduces the environmental footprint and improves efficiency. Without confining the project to a specific commercial reference, we selected a model from the R-32 range offering:

  • quiet operation suitable for bedrooms and living rooms;

  • an extended modulation range to stabilize the temperature;

  • accessible filters for easy HVAC maintenance ;

  • compatibility with good installation practices in the Montreal climate (defrosting, condensate management, rapid temperature fluctuations).


Reading the piece and implementation strategy

The room combines storage , a rest area and direct access to the outside through a glass door. This context requires:

  1. Unobstructed airflow : The niche above the closet creates a natural lintel. We kept 15 to 20 cm of free space under the ceiling and on either side of the headboard to prevent any hot/cold recirculation.

  2. No direct jet on the occupants: the orientation of the shutters favors a horizontal sweep in air conditioning mode and a flow slightly directed downwards in heating mode for uniform comfort.

  3. A short connection route : proximity to a wall leading to the outside, limiting the refrigeration length, therefore better COP and fewer losses.


Installation steps: precision and clean finishes

1) Locating and fixing the plate
We install the wall plate with a laser, ensuring alignment with the ceiling plane and centering on the niche. The bracket is screwed into the solid wall structure, with appropriate anchors to eliminate any vibration.

2) Drilling and crossing
A controlled slope through-hole was made on the right side of the head, allowing the passage of refrigeration lines, the communication cable and the drain . The hole is sheathed and sealed for airtightness, preventing infiltration and thermal bridges.

3) Refrigeration connections
After controlled flaring and tightening torques with a dynamometer, we proceed to draw a deep vacuum to the required micron threshold. A nitrogen test confirms the seal before releasing the fluid.

4) Condensate management
Gravity drainage is preferred: constant slope, clean water test, and passage protection to prevent any moisture marks in the closet. No condensate pump is required—so no additional noise or maintenance.

5) Food and compliance
The dedicated electrical circuit is validated with an adequate circuit breaker and disconnection box outside near the condenser (standardized intervention for Montreal, Laval, Longueuil, North Shore, South Shore ). Cables in UV-resistant sheath.

6) Commissioning
Reading of service parameters, calibration of shutters, control of blowing temperature , verification of defrosting and perceived static pressure . The customer receives instructions for use and basic settings.


Notable integration details

  • High position under the ceiling: the head uses natural stratification to recover warm air in winter and push it back into the volume.

  • Niche above the cupboard : we took care to maintain a sufficient air passage , avoiding any installation that was too recessed which would limit suction.

  • Close exterior access : the connection cover (white) remains minimal and discreet; the total length of the lines is reduced , which improves energy efficiency and responsiveness in mid-season.

  • Noise control : anti-vibration pads on the back of the head, controlled tightening torque to prevent any whistling related to flares.


Results obtained

From the moment it is switched on, the room gains thermal stability . In heating , fine modulation prevents sudden cycles. In air conditioning , the blower adjusts its speed to maintain a pleasant humidity level without drafts. The infrared control memorizes preferences; a Wi-Fi module can be added to automate the settings according to schedules.


Usage tips for this type of configuration

  • Heating : let the heat pump modulate instead of playing with large setpoint differences; comfort and costs are optimized.

  • Air conditioning : favor a wide horizontal sweep ; in case of direct sunlight through the door, lower the shutters slightly to break up the hot spot .

  • Filters : Wash every 4 to 8 weeks during periods of heavy use; clean media improves flow and reduces consumption.

  • Annual maintenance : deep cleaning of the evaporator and outdoor condenser, drain check, pressure and leak testing — a major lever for durability .


AirGreen Best Practices for Montreal Interiors

  1. Avoid complete embedding : always maintain clearances around the suction.

  2. Prioritize a short route for refrigerated connections: every meter gained means more performance and faster ascent time .

  3. Take care of the drilling : sheath + sealant = controlled sealing and acoustics .

  4. Plan maintenance from the design stage: installation height allowing the front panel to be opened and the filters to be washed without heavy dismantling.

  5. Protect furniture : direct the blowing so as not to aim directly at the bed, sofa or workstation .


Grants and Eligibility

Several wall-mounted heat pumps in the Gree R-32 range have efficiencies that can meet the criteria for assistance programs in Quebec. Eligibility depends on the exact model , certified operating temperature and seasonal indicators . We support our customers in verifying models , providing documents and submitting quotes when conditions are met.


What this installation says about our approach

  • Analysis of the location , no generic solution: the installation above the cupboard is only chosen because it guarantees clearance and maintenance .

  • Technical rigor : from vacuum drawing to shutter adjustment, each step aims for lasting performance .

  • Aesthetics and comfort : discreet capping , no audible condensate pump, low noise level .

  • Local service : rapid intervention and follow-up for Montreal , Laval , Longueuil , North Shore and South Shore .


HVAC Maintenance: Recommended Annual Checklist

  • Cleaning the filters and inspecting the evaporator (brushing + suitable product).

  • Low pressure washing of the outdoor condenser ; checking the propeller and the grille .

  • Gravity drain test (water pouring, flow control).

  • Electrical check (terminals, disconnection , earth continuity).

  • Reading of service parameters and adjustment if necessary.


Conclusion

This HVAC installation in Rosemont–La Petite-Patrie illustrates a clean, rational and sustainable integration of a Gree wall-mounted heat pump (R-32) in a Montreal interior. Positioned high , well -cleared and close to the outside , the head delivers stable comfort in all seasons, while preserving the aesthetics of the room. With AirGreen , each project benefits from precise sizing , careful execution and clear support on use and maintenance—assets that translate into energy savings and system longevity for homes in Greater Montreal .

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