Careful integration above a patio door for seamless comfort in a Montreal condo
At AirGreen , we support co-owners and occupants of Rosemont–La Petite-Patrie who want to modernize their comfort while optimizing their energy consumption. This project highlights the installation of a Daikin wall-mounted heat pump installed at the top of the wall, just above a patio door opening onto a tree-lined balcony. The objective: to provide efficient supplemental heating in winter and quiet air conditioning in summer , without encroaching on the floor space, while respecting the constraints of urban housing.
Context, objectives and sizing
The owner was looking for a solution:
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compact and discreet , not obstructing traffic or furniture;
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effective at low temperatures , to reduce the use of electric baseboards;
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quiet , compatible with the neighborhood and open-plan living.
After a survey and load calculation (glazed surfaces, orientation, infiltration, ceiling height), we validated a capacity of around 9,000 to 12,000 BTU/h for the main living area. The Inverter modulation specific to Daikin wall units allows the power to be finely adjusted to actual demand, guaranteeing thermal stability and savings.
Technical details and best practices applied
Inner head positioning
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Height : the device is placed at the top, centered above the patio door, in order to increase the blowing range and avoid obstacles.
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Clearances : we ensure sufficient clearance from the ceiling and side returns to prevent air recirculation and facilitate maintenance.
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Diffusion : The louver is set to sweep the living area without creating a direct draft on the occupants. In this type of configuration, a slight downward tilt improves mixing and reduces convection traces on the ceiling.
Route of the connections and crossing
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Wall feed-through in the immediate vicinity of the unit, on the door hinge side, to reduce the length of unnecessary piping.
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Protection : The insulated refrigeration lines, communication cable, and power supply are externally capped to protect them from UV rays and water. The bending radii are respected to preserve the integrity of the flares and insulation.
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Waterproofing : installation of a bulkhead and a facade-compatible sealant, in order to ensure air/water tightness and the energy performance of the accommodation.
Condensate management
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Preferred gravity drain , with a continuous slope towards the outside. When the configuration requires it (long length or reverse slope), we offer a silent micro-condensate pump , with safety cutouts. Here, the elevation of the head above the door naturally facilitates drainage.
Power supply and safety
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Dedicated circuit sized according to the appliance nameplate.
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External disconnect box placed within visual range of the condenser, waterproof whip and clear identification on the panel.
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Torque tightening of terminal blocks, protected routing and continuity/insulation test.
Refrigeration commissioning
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Nitrogen pressure test , then deep vacuum until stabilization, in order to eliminate humidity and residual air.
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Control of intensities , temperature differences and Inverter parameters in cooling/heating modes.
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Noise and vibration checks at different power levels to ensure acoustic discretion.
Site features and solutions
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Patio doors and balconies : this context requires free swing of the leaf and attention to the stratification near the bay window. We adjust the instructions and the direction of the blowing to limit cold spots.
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Interior finish : discreet trim and aligned passage, in order to maintain the aesthetics of the wall and the flatness around the frames.
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Simplified maintenance : front access to washable filters , regular cleaning advice and reminder of the importance of clearance around the device.
Why Daikin in a Rosemont condo?
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Extended modulation : The inverter compressor expands the operating range and limits on/off cycles.
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High seasonal efficiencies (SEER/HSPF) depending on the series, useful for eligibility of subsidy programs when the reference is approved.
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Reliability in cold climates : defrost management and capacity maintenance in negative temperatures (depending on model).
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Careful acoustics : optimized fans and internal enclosures limiting vibrations.
Result: perceived comfort and savings in use
The living area now benefits from consistent comfort : gradual temperature rise in winter, regular cooling in summer and better controlled humidity . Modulation reduces consumption and perceived noise, particularly during quiet evenings on the balcony.
Daily usage tips
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Maintain a stable setpoint and play on the 1°C gap rather than large jumps.
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Keep the filters clean (rinse every 4 to 8 weeks, depending on dust and animals).
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Leave the shutters blowing horizontally to distribute the air; lower them slightly in very cold weather to counteract stratification near the patio door.
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Clear service access for annual maintenance.
HVAC Maintenance by AirGreen
We offer maintenance visits including: cleaning of exchangers, drain check, electrical check, pressure/temperature reading, parameter updates and personalized advice. A maintained device retains its performance and lifespan .
Grants and Eligibility
Several programs are available in Greater Montreal depending on the exact reference (certifications, low temperature performance): we support our clients in Montreal, Laval, Longueuil, North Shore and South Shore in verifying criteria, preparing documents and compliant detailed invoicing.
Common pitfalls avoided by our team
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Insufficient ceiling clearance leading to recirculation and dust deposits above the unit: we adjust the position and settings of the shutters to limit ceiling marking.
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Drain counter-slope : we check the useful slope and, if necessary, install a micro-pump with a safety shut-off device.
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Too tight bending radius of the connections: we follow the recommendations to avoid micro-leaks and whistling.
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Leaky holes : we use bulkheads and sealants adapted to differential movements between masonry and joinery.
Why AirGreen in Rosemont–La Petite-Patrie
Our team is familiar with the typical constraints of Montreal plexes and condos : shared walls, narrow balconies, limited ductwork, and demanding co-ownerships. We guarantee:
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clear planning (quotes, appointments, advice on capacity selection);
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clean and compliant execution (electricity, refrigeration, finishing);
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long-term support (HVAC maintenance, usage advice, seasonal support).
Conclusion
This Daikin wall-mounted heat pump installation in Rosemont–La Petite-Patrie illustrates our approach: rigorous thermal analysis , respectful integration of the interior architecture, protected connection paths and meticulous commissioning . The result is measurable comfort, energy savings and a solution ready for Montreal winters as well as the hot summers of the metropolis. We operate with the same high standards in Montreal, Laval, Longueuil, on the North Shore and the South Shore .