A well-designed installation to face Quebec winters
At AirGreen , we place the utmost importance on the durability and winter performance of every HVAC installation. This service call in Sainte-Julie , on Montreal's South Shore , perfectly illustrates how a careful, climate-adapted installation can ensure optimal performance all year round.
Our client had just renovated his garden level and wanted to install a Midea wall-mounted heat pump to benefit from economical heating and stable comfort , even in periods of extreme cold.
Site context and challenges
The outdoor unit was to be placed under a wooden deck , a semi-open space exposed to snow and frost.
This type of environment presents several technical challenges :
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Risk of snow and ice accumulation under the unit .
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Poor condensate drainage , which can freeze on the floor.
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Restricted airflow if the unit is positioned incorrectly.
To ensure the longevity of the system and avoid any obstruction, our team designed an installation on a raised wall bracket in galvanized aluminum , allowing:
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Optimal air circulation around the condenser.
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Protection against water splashes and ice .
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Enhanced mechanical stability , even during defrost cycles.
Step 1: Preparing the wall and fixing the support
Before any fixing, our technicians inspected the exterior wall structure to ensure it could support the load of the device.
We then have:
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Drilled and securely anchored the wall bracket using stainless steel expansion bolts.
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Level the base perfectly to avoid any stress on the refrigeration pipes.
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Install anti-vibration dampers to minimize noise and vibration transmitted to the building.
This type of mounting also facilitates the natural drainage of condensation while keeping the unit away from the snow-covered ground.
Step 2: Passage of pipes and connections
The wall-mounted indoor unit was installed in the living room, in a strategic location allowing even distribution of hot and cold air throughout the space.
We then have:
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Drilled a watertight hole through the foundation for the passage of the copper pipes and the condensate drain.
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Thermally insulated all refrigeration lines with high density sheathing.
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Connected and welded the lines according to Midea pressure standards, before carrying out a nitrogen test at 350 psi to ensure leak-tightness.
Step 3: Commissioning and Performance Testing
Once the connections were complete, we evacuated the system to remove any moisture and then charged it with R-410A refrigerant according to the manufacturer's exact specifications.
Performance tests showed:
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Stable and perfectly compliant pressures .
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Automatic defrosting effective even at -15°C.
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Minimal noise thanks to good insulation and rigid mounting.
The unit was then calibrated to optimize heating mode in winter and cooling mode for the warm season .
Step 4: Final result and maintenance recommendations
The customer now benefits from a discreet, efficient installation protected from the elements .
The choice of a wall mount under the terrace proved to be a wise one:
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No snow accumulation under the unit ,
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No vibration felt inside ,
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Easy access for future interviews .
Our technicians advised to:
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Check clearance under unit after each storm,
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Clean the coils at the end of winter,
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And perform annual AirGreen maintenance to maintain energy efficiency.
AirGreen Expertise: the art of intelligent installation
Each wall-mounted heat pump installation project is unique.
At AirGreen , we always analyze the site configuration to adapt the assembly , optimize air circulation and protect the system against Quebec conditions .
Our installations are built to the highest industry standards, guaranteeing performance, silence and durability .
Whether you are in Sainte-Julie , Brossard , Montreal , Laval or on the North Shore , our certified experts will assist you in the choice, installation and maintenance of your Midea, Fujitsu, Gree or Zephyr heat pump .
AirGreen is more than an installer: it's a trusted partner for your HVAC comfort, summer and winter.
Technical summary of the intervention:
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Device type: Wall-mounted heat pump (mini-split)
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Brand: Midea
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Location: Sainte-Julie (South Shore)
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Special feature: Installation under terrace with raised wall support
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Solution: Galvanized support, complete insulation, winter calibration
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Result: Stable performance, efficient drainage, snow protection