A precise installation on a brick facade with reinforced brackets , blue anti-vibration pads , accessible electrical disconnect and short refrigeration path : this project in a joint ownership in Chomedey highlights the AirGreen method to combine comfort, efficiency and discretion in a suburban environment.
Client background and objectives
In a red brick residential building overlooking a quiet road, the owner wanted a reversible HVAC system to provide stable cooling in the summer and reliable heating during the mid-seasons, without encroaching on the balcony space. The priorities:
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limit vibrations transmitted to the masonry;
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maintain proper clearances for air intake and exhaust;
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have an external disconnect for maintenance safety;
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reduce link lengths to improve efficiency.
We recommended a GREE R-32 wall-mounted heat pump (recent range), equipped with an inverter compressor and a quiet outdoor fan — a configuration perfectly suited to plexes and condominiums in Greater Montreal .
Why a GREE R-32 for this project in Laval?
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R-32 refrigerant : lower charge, optimized heat transfer and better seasonal efficiency .
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Inverter : fine modulation, stable temperature and controlled consumption, even at partial load.
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Compact exterior design for high installation on the facade without obstructing balcony traffic.
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Low noise levels , essential for cohabitation on landings and railings.
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Compatibility with assistance programs when capacity and performance class meet the criteria in effect in Quebec.
Implementation engineering: precision, durability and aesthetics
Support and anchors
The condenser is mounted on sturdy galvanized brackets , mechanically anchored to the brick using expansion rods and large washers. Between the unit and the brackets, we integrate blue anti-vibration pads that reduce vibration transmission and limit reverberation on the facade. The high ground clearance protects the equipment from projections and snow and facilitates the flow of defrost water in winter.
Short and protected refrigerated path
The side cover of the unit neatly accommodates the insulated copper lines and the communication cable ; the path is as short as possible (≈ 2 to 3 m) to the indoor unit, which:
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reduces pressure losses ;
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simplifies maintenance ;
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improves the inverter compressor's response to setpoint variations.
The rollover is controlled in the visible areas, with curvature radii respected on the service loops to preserve the integrity of the flares.
Power supply and safety
In the immediate vicinity of the device, an external metal disconnect allows for rapid isolation during interventions. The circuit is dedicated from the panel, with a gauge compliant with the manufacturer and verified grounding . Cable glands protect the cable entries against abrasion and moisture.
Management of clearances and neighborhood
The air outlet is oriented to avoid recirculation against the downspout and to maintain a clear passage in front of the fan grille. The installation set back from the guardrail keeps the passageways on the balcony clear.
AirGreen HVAC Installation Process
Drilling and sealing
The drilling is carried out with a controlled slope towards the outside for the gravity management of summer condensates . The penetrations are sealed with butyl tape and neutral silicone , then capped for a clean and durable finish against freeze/thaw cycles.
Refrigeration connections
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Flaring carried out with a calibrated tool , light lubrication, torque meter for flare nuts.
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Continuous insulation of lines with anti-radiation strips at corner areas.
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Nitrogen pressurization test and soapy water check of the connection points.
Vacuuming, charging and tuning
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Deep vacuum < 500 microns, stabilization and ascent test to confirm leak tightness.
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Factory load opening , adjustment if necessary according to actual length.
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Checking the parameters in cold mode then in hot mode (ΔT, pressures, superheating and subcooling).
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One-off acoustic monitoring at the balcony and property boundary: values consistent with residential uses.
Results: comfort, savings and discretion on a daily basis
4-season comfort
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Summer: Indoor wall-mounted air conditioner with variable speed, regular airflow without unpleasant drafts.
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Mid-season and mild winter: efficient heat pump that reduces the need for electric baseboard heaters , for tangible savings .
Controlled consumption
The inverter compressor , combined with the short line length , reduces short cycles and improves efficiency . The customer benefits from setpoint stability and an optimized electricity bill.
Aesthetics and tranquility
The high installation frees up the guardrail, the careful cladding conceals the connections and the pads limit the transmission of vibrations to the building - a guarantee of peace and quiet for the neighborhood.
HVAC Maintenance: Maintaining Performance and Longevity
Recommended maintenance plan
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Cleaning the external exchanger and dusting the fins;
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Washing and disinfection of the internal exchanger, filters vacuumed/replaced;
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Control of electrical tightening , line insulation and gravity flow ;
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Checking seasonal operating parameters , updating the remote control (eco modes, timers).
Best practices for the client
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Keep 50–70 cm free in front of the fan front;
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Avoid storing objects on the balcony in the discharge axis;
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In winter: clear snow around the vents and check the defrosting flow ;
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Program stable instructions adapted to occupancy to limit over-modulation.
Sizing: Selecting the Right Capacity (BTU)
For each project, we analyze surface area , insulation , orientation , infiltrations and internal contributions in order to recommend the ideal capacity (e.g. 9,000 , 12,000 , 18,000 or 24,000 BTU depending on the GREE R-32 range available: Livo , Clivia , Charmo , etc.). Correct sizing:
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maintains high SEER/HSPF ;
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avoids short cycles ;
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extends the life of the compressor.
Grants and administrative support
High-efficiency R-32 wall-mounted heat pumps may be eligible for assistance programs depending on capacity and performance class. Our team supports customers in Montreal , Laval , Longueuil , North Shore and South Shore :
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verification of criteria (efficiency class, cold weather performance);
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preparation of documents and photo evidence ;
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tips for maximizing eligibility when selecting range and capacity.
Technical details that make the AirGreen difference
Masonry and sustainability
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Drillings carried out without weakening the joints; meticulous sealing to prevent infiltration;
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Anti-corrosion screws and support washers to distribute the load on the brackets ;
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Route the connections away from the downspout to avoid repeated thermal shocks.
Acoustics and vibrations
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Elastomer pads under each support point;
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Torque tightening to avoid vibration harmonics;
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Control of resonances linked to the balcony railing.
What the owner gains with AirGreen
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An HVAC installation designed for the real constraints of balconies and brick facades ;
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Rigorous commissioning (deep vacuum, tests, calibrations);
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Personalized maintenance follow -up and usage advice;
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Grant support throughout Greater Montreal .
In short
In Chomedey (Laval) , this GREE R-32 wall-mounted heat pump mounted on brackets with dedicated disconnect and short path offers 4-season comfort , controlled consumption and integration specific to co-ownership requirements - the signature of a well-designed AirGreen installation.
Keywords: heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore .