A better-tempered living space, without major work or compromise on aesthetics
In this Brossard house on the South Shore , we are installing a Sharp wall-mounted heat pump ( ZU1 series, new generation refrigerant) above a decorative molding. The goal: to provide reliable heating in winter and quiet air conditioning in summer for the dining room-kitchen area, while respecting the character of the room ( cornices , decorative panels , circulation to the hallway). Our HVAC installation prioritizes discreet routes and durability: clean drilling, gravity drainage , short connections, anti-vibration and rigorous commissioning tests.
Customer context and expectations
The owner was looking for:
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A high-performance cold-weather appliance to reduce heating costs and increase comfort.
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A discreet integration that does not damage cornices or wall paneling.
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A solution eligible for grant programs available for Greater Montreal (based on performance criteria).
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Clear tips for HVAC maintenance and longevity.
Why the Sharp ZU1 for this South Shore home?
Efficiency, modulation and low noise
Sharp 's ZU1 series offers fine compressor modulation and an excellent efficiency/noise ratio: in low mode, the indoor head remains almost inaudible during meals. The vertical and horizontal sweep distributes the air throughout the living room , limiting stratification between the ground floor and the corridor.
Robust heating in Montreal's climate
Designed for extreme cold , the ZU1 maintains a useful capacity below -25 °C , which is perfectly suited to the winters of Montreal , Laval , Longueuil , North Shore and South Shore . The result: less electrical backup, a more stable temperature and superior perceived comfort.
Preserved aesthetics
The wall head aligns with the cornice : no decorative cutouts, no intrusive hoods. The exterior (not visible here) receives the unit on galvanized brackets with anti-vibration pads , away from passage areas and in accordance with the required clearances.
Installation Details: AirGreen Method
Study and positioning
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Installation height : under the cornice to free the shutter and promote airflow to the corridor.
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Centering : the head is re-centered on the partition to avoid recirculation against corner returns.
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Analysis of obstacles : table, furniture, opening to the hall; choice of a lateral air jet in fresh mode to spare the dining area.
Refrigerated and electrical route
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Estimated total length : 4 to 6 m (direct rear outlet, protected external downpipe, connection to the condenser).
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Main drilling : 3" core with 1% slope towards the outside for the gravity drain . Edge of the drilling sleeved to protect the insulation.
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Exterior capping : discreet white profile, curvature radii respected to avoid pinching the insulation.
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Power supply : 240 V on dedicated circuit with disconnect box within easy reach; identification on the electrical panel.
Fixing, sealing and anti-vibration
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Laser -mounted mounting plate , anchors adapted to the support, controlled tightening torques.
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Condenser on galvanized wall brackets , rubber buffers , minimal clearance for recirculation and defrosting .
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Waterproofing : closed-cell foam + UV sealant for wall penetration; anti-drip flaps .
Commissioning
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Vacuum draw ≤ 500 microns , vacuum resistance verified; leak test .
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Additional charge in accordance with the actual length; measurements of supply/return temperatures and intensities .
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Settings : Auto/Heat/Cool/Dehumidify modes, sweeping, comfort settings; maintenance guide provided.
Results: comfort and savings on a daily basis
Even diffusion in the living room
The vertical sweep returns warm air to the occupancy level in winter; in summer, the jet reach maintains comfort down to the aisle without direct draft on the table.
Measurable reduction in bill
The heat pump covers most of the mid-season heating and a large part of the winter peaks. Modulation avoids short cycles , therefore less wear and tear and controlled consumption .
Simplified HVAC Maintenance
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Washable filters on the front; cleaning recommended every 4 to 8 weeks during the season.
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Annual maintenance: pressure/temperature check, condensate test, coil cleaning and parameter updates if necessary.
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Around the condenser : clear snow and leaves for effective defrosting.
Grants and Compliance (Greater Montreal)
High-efficiency wall-mounted heat pumps like the Sharp ZU1 are often eligible for grant programs subject to technical criteria. Our team manages: selection of the right model , performance file , proof of HVAC installation , and support for Montreal , Laval , Longueuil , North Shore and South Shore . We aim for a complete and clear file to speed up processing.
Technical highlights of this achievement
1) Respect for the interior finish
The presence of cornices and decorative panels requires precise drilling and a perfectly level mounting plate. We avoid any contact between the lower cover and the molding to guarantee the total opening of the shutter .
2) Controlled gravity drainage
To prevent wall marks , we validate the slope and test the flow by pouring . The customer knows how to spot signs of anomaly (water noise, seepage) and has an AirGreen service channel for intervention if necessary.
3) Silence and vibrations
Wood -panelled homes can reverberate. Our anti-vibration pads , elbow radius , and controlled tightening torques reduce vibration transmission to the structure. Inside, the noise level remains compatible with meals and teleworking.
AirGreen Tips for South Shore Homes
Correct sizing (BTU)
We do not transpose “standard room” calculations. Orientation, glass surfaces, junction with the corridor, neighboring cooking appliances: everything is included in the thermal balance . We propose the right capacity (9,000 to 18,000 BTU most often for living rooms of this size), after taking measurements and completing a usage questionnaire .
Thoughtful outdoor placement
To avoid facade noise and optimize defrosting , we choose a location sheltered from the wind and respecting the clearances. In co-ownership, we validate the regulations (heights, visibility, evacuations).
Plan for maintenance from the design stage
A well-sleeved wall passage , accessible disconnection and careful capping reduce long-term risks and facilitate maintenance.
What we deliver with every project
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Technical study , sizing and recommendation (brand, series , BTU ).
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Complete and documented HVAC installation , with technical tests and photos.
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Help with preparing grant applications for Montreal , Laval , Longueuil , North Shore , South Shore .
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After-sales follow-up : maintenance, optimization of seasonal settings, usage advice.
At AirGreen , we design each wall-mounted heat pump installation to be efficient , discreet and durable , perfectly adapted to the climatic realities of Greater Montreal .
Fast Fair
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Type : Sharp ZU1 series wall-mounted heat pump .
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Location : Brossard (South Shore) .
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Highlights : four-season comfort, low noise, gravity drain , dedicated 240V circuit , anti-vibration.
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HVAC maintenance : washable filters + annual inspection recommended.
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Grants : typical eligibility based on technical criteria; AirGreen support.
A similar project?
We respond quickly in Brossard , Longueuil , throughout Montreal , Laval and on the North Shore . Tell us about your living space: we will offer you the most relevant HVAC solution and a clear quote, planned according to your availability.