A construction site in an urban setting where every detail counts: in an apartment with a patio door and balcony overlooking the avenue, we installed aSharp ZU1 wall-mounted heat pump. The location above the bay window , the short route of the connections and the gravity evacuation of condensates ensure stable comfort in all seasons, without encroaching on the living space.
Four-season comfort, elegant aesthetics
Customer expectations
In Verdun , the owners wanted:
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discreet cooling for the open living room-kitchen area;
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an efficient additional heater for the mid-seasons;
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a clean integration near the patio door, without obstructing the curtains or access to the balcony;
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a low noise level on the terrace side.
The Sharp ZU1 responds perfectly: inverter to modulate the power, precise blowing, and Plasmacluster air treatment on the indoor unit.
Choice of interior layout: performance and diffusion
We installed the wall head above the patio door , a good distance from the ceiling to avoid re-aspiration of air and to allow the shutters to open fully. This location:
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sweeps the living area with a homogeneous flow of air;
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limits drafts felt when sitting;
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remains accessible for filter maintenance.
The connections run vertically in a white channel specific to the partition, then cross directly to the outside. Result: reduced length , minimized pressure losses and refined aesthetics.
Condensate management: priority to gravity
The configuration allows for gravity drainage of condensate through a hole with a continuous slope towards the outside. This avoids the need for a pump (noise, maintenance) and reduces the risk of odors or frost returning near the door sill.
Outdoors: silence and durability on the balcony
Raised and anti-vibration support
On the balcony, the Sharp Eco Inverter condenser sits on a raised, mechanically secured aluminum stand . Anti-vibration pads isolate the unit from the balcony structure. The unit remains above the snow line and defrosts freely in winter—a key feature in Montreal.
Food and safety
An easily accessible external disconnect box secures service interventions. Communication and power cabling are protected in a dedicated route, with bending radii respected to preserve the integrity of the connections.
Why the Sharp ZU1 for an apartment in Verdun
Fine modulation, acoustic comfort
The inverter compressor adjusts its speed according to the thermal load. Concretely:
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stable temperature without on/off cycles;
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optimized consumption during long periods at partial load;
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contained noise levels , appreciated on the balcony side and in the living room.
Air quality and dehumidification
Plasmacluster treatment contributes to a healthier environment. In air conditioning, dehumidification remains consistent, ideal during humid periods on the Lachine Canal and the river.
Effectiveness and admissibility
In the 9,000 to 24,000 BTU range , several configurations reach the efficiency thresholds generally required by assistance programs in Quebec. We verify approval on a case-by-case basis and support the process for Montreal, Laval, Longueuil, North Shore and South Shore .
Our HVAC installation methodology
1) Sizing and preparation
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Calculation of thermal loads (orientation, glazed surfaces, infiltration).
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Checking the electrical panel and the dedicated circuit.
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Validation of interior clearances (curtains, rods, false ceilings) and exterior clearances (guardrails, circulation).
2) Drilling and sealing
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Through-hole behind the head, vapor barrier sleeve and UV-resistant seals.
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Controlled anti-condensation slope .
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Trunking finishes match the wall for a discreet look.
3) Refrigeration connections
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High density insulated copper , calibrated flares and torque tightening.
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Nitrogen leak test and deep vacuum (stable hold).
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Opening of valves and validation of superheating/subcooling according to commissioning conditions.
4) Power supply and proximity cut-off
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Connection to dedicated circuit ; controlled earthing .
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Installation of the disconnection box on the balcony, within reach of the technician, in accordance with RBQ/CE requirements.
5) Start-up and fine-tuning
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Successive cold/hot tests; setting the shutters to avoid direct blowing onto the seating area.
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Interior/exterior acoustic check.
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Occupant training: cleaning filters , eco modes, good practices during defrosting periods.
Results for housing
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Rapid cooling of the open area even on sunny afternoons.
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Efficient supplemental heating , reducing the use of the main system in autumn and spring.
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Controlled silence thanks to anti-vibration pads and rigid support.
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Simplified maintenance : accessible filters, clean chute, clearances respected.
Good AirGreen practices to remember
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Place the head above the bay window when the geometry allows it: optimal diffusion and short path.
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Use gravity to drain condensates.
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Raise and detach the condenser for snow and noise.
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Plan for service clearances : an efficient system is planned from the installation stage.
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Protect connections (sheath, collars) and avoid tight loops on the outside.
HVAC Maintenance: Maintaining Performance
An annual maintenance is recommended:
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gentle cleaning of the external exchanger ;
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dusting and washing of internal filters ;
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checking electrical connections , inspecting insulation/collars ;
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checking the condensate hose (slope, flow).
Our teams cover Montreal, Laval, Longueuil, North Shore and South Shore with HVAC maintenance packages adapted to apartments and plexes typical of Verdun and the Southwest .
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