Four-season comfort, perfectly integrated into the aesthetics of a Montreal apartment
At AirGreen , we have just installed an LG wall-mounted heat pump (R-32 refrigerant) in a bright apartment in the Rosemont–La Petite-Patrie neighborhood. The client's goal is clear: to obtain reliable heating in winter , gentle air conditioning in summer , and even air distribution in the living area without distorting the character of the unit—corner moldings, picture rails, and doorways typical of Rosemont buildings. Our team designs a careful HVAC installation , designed for visual discretion , acoustic performance , and durability .
Why an LG R-32 wall-mounted heat pump in Rosemont?
Rosemont's residential buildings combine load-bearing masonry walls, high-ceilinged rooms, and central hallways. In this context, a wall-mounted heat pump with inverter technology is ideal:
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fine modulation of power to maintain a stable temperature ;
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optimized electricity consumption thanks to the variable speed compressor;
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R-32 refrigerant , with lower GWP than R-410A;
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low temperature heating modes and intelligent defrosting , essential for the Montreal climate.
We have chosen an LG indoor unit from the R-32 range , known for its quiet operation , wide blowing and multi-layer filtration which improves indoor air quality - a real plus in a home overlooking a busy street.
An interior installation that respects the architecture and finishes
In the main room, the wall head is positioned high on the wall , under the cornice, so as to free up lines of vision , not to encroach on the curtain rods and to sweep the living area (living room + dining room) with a long-range flow of air. Our precautions:
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Mounting plate anchored to the frame with suitable metal dowels, to eliminate any vibration.
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Perfect squareness and compliance with the recommended ceiling clearance , in order to optimize air recirculation and reduce noise.
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Crossing passage behind the device: we cleanly cored the exterior wall with a waterproof sheath, controlled drainage slope to ensure gravity flow of condensate (no pump required).
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Protection of moldings and picture rails : temporary masking, precise cutting of acrylic joints, finishing touches for a clean finish.
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Blowing management : orientation of the shutters to avoid direct air currents towards the sofa area and the dining area, while ensuring minimal stratification in the passage area.
Result: the LG head integrates without visual conflict with the decorative elements, and its discreet indicator light remains visible for feedback, without creating an annoying halo in the evening.
The refrigeration connection: invisible, insulated, durable
We place great importance on the quality of the refrigeration circuit —it's the backbone of a high-performance HVAC system . On this project:
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Calibrated deoxidized copper , silver brazed, high density continuous insulation with sealed junctions.
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Constant slope condensate line , anti-vibration sleeve at the drilling and weatherstripping cap on the outside.
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Communication cabling kept away from stray signals and protected in the external capping .
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Nitrogen leak test (pressure test) followed by deep vacuum drawing to the recommended threshold, with controlled stabilization; we document the vacuum values for customer file traceability.
This level of rigor makes it possible to achieve real efficiencies close to nominal performances and to extend the life of the compressor.
Power supply: safety and compliance
The device is connected by a dedicated circuit sized according to the machine's current, appropriate circuit breaker and external load break circuit breaker near the unit. The connections comply with current standards ( RBQ/CSA ), grounding is verified, and the identification of the conductors is affixed in the box. We then test the start-up sequences , the heating mode , the air conditioning mode , and the recovery after defrost , to deliver a safe and stable system.
Air diffusion: range, comfort and silence
The room features an arched opening to the hallway. We calibrate the horizontal sweep to push tempered air toward this opening, which naturally redistributes heat in winter and coolness in summer.
Our settings:
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Daily auto-priority speed to lower noise levels and monitor load.
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Temporary “Jet” mode during significant deviations (weekend returns, heatwave) in order to quickly reach the set point.
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Set temperature adapted to household habits: we recommend 21°C-22°C in winter, 23°C-24°C in summer, with the Eco function activated at night.
Thanks to the Inverter electronics , the equipment avoids jolts ; the feeling of comfort remains continuous , and the perceived noise blends into the ambient background.
Maintenance and longevity: the right AirGreen actions
A wall-mounted heat pump maintains its performance provided it receives regular HVAC maintenance . We provide the owner with a simple maintenance plan:
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Clean the filters every 4 to 6 weeks (more frequently if there are animals or dust).
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Visual inspection of the head (lights, flow) at each change of season.
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Annual professional maintenance : electrical check, leak test, drainage test, battery disinfection and probe calibration.
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After episodes of icing and extreme cold: clear the outdoor unit , check for frost and observe the defrost cycles.
This routine protects air quality, maintains performance and preserves the warranty .
Grants and savings: what a Rosemont household can expect
High-efficiency wall-mounted heat pumps using R-32 are, according to their performance data sheets and certifications, eligible for various assistance programs that may apply in Greater Montreal (Montreal, Laval , Longueuil , North Shore , South Shore ). We support our customers in:
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the eligibility assessment (power, seasonal efficiency, heating range in extreme cold);
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preparation of documents (proof of installation, serial numbers, photos);
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the submission of applications on time.
At the same time, we quantify the operating savings : compared to electric convectors alone, the heat pump reduces the useful energy per kWh consumed thanks to the higher COP , especially during the off-seasons. The key: lower bills and a reduced carbon footprint .
What we solved in this Rosemont accommodation
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Aesthetic constraints : period moldings and cornices preserved; the head is centered and aligned to visually disappear.
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Airflow management : no direct airflow onto the sofa area or dining area, immediate perceived comfort .
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Condensate drainage : validated gravity slope, no lifting pump , therefore reduced maintenance and increased reliability.
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Noise level : selection of a silent night mode and vibration dampers on the turntable.
AirGreen Tips for Similar Montreal Apartments
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Choose the power based on the actual volume : the ceiling height and the contiguity of the rooms are decisive (not just the surface area).
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Optimize the location : aim for a through-flow that benefits adjacent rooms via openings, rather than an isolated corner.
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Preserve gravity drainage from the design stage: fewer moving parts, less noise, more reliable.
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Take care of the acoustics : the rigidity of the fixing and the distance from the ceiling drops avoid the “sound box effect”.
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Plan maintenance as soon as you get the keys: an annual visit maintains performance and extends the life of the device.
AirGreen support: from the quote to the first winter breeze
We don't just install. We size , document and train . At the end of the work, we provide the customer with:
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the commissioning report (pressure/vacuum values, functional tests);
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the maintenance sheet and recommended settings ;
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the necessary evidence for possible subsidies .
Our after-sales service remains available for any questions, and we offer scheduled maintenance visits to help you get through Montreal winters without worry.
Conclusion: a discreet, efficient and durable installation
This HVAC installation in Rosemont–La Petite-Patrie illustrates what we stand for at AirGreen: architectural integration , technical precision and measurable comfort on a daily basis. With its LG (R-32) wall-mounted heat pump , the apartment now benefits from efficient heating in very cold weather and gentle air conditioning in heat waves , all in exemplary silence and with controlled consumption .