A transformed Montreal kitchen: four-season comfort, maximum discretion, controlled consumption
Project background
In a typical Rosemont–La Petite-Patrie apartment—wood floors, a cozy kitchen, and central circulation—our clients wanted a high-performance HVAC system that would provide precise, day-to-day comfort without cluttering the space or increasing their energy bill. We offered them the Midea28 ( R-454B refrigerant, extreme cold performance down to -30°C), a wall-mounted heat pump ideal for open-plan living areas that include the kitchen and living room.
Why the Midea28 for this type of home?
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High seasonal efficiency : excellent heating and cooling performance, adapted to the climate of Greater Montreal .
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Range −30°C : stable and reliable heating even during periods of intense cold.
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Quiet : Low-noise indoor unit – a key criterion in an open kitchen.
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Modular capacities : 9,000, 12,000, 18,000, 24,000 and 33,000 BTU to precisely calibrate the power according to the volume to be treated.
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New generation refrigerant (R-454B) : reduced environmental footprint, better compliance with recent standards.
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Smart control : remote control and application to program time slots and optimize consumption.
Load study and choice of location
We first carry out a thermal assessment of the main area (kitchen + dining area + portion of the living room). Internal inputs (cooking, appliances), orientation and windows dictate an intermediate need; a configuration of 12,000 to 18,000 BTU is optimal.
For the indoor unit, we retain the high wall above the back door , allowing:
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a longitudinal air diffusion which sweeps the kitchen and living room;
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a clear air return , away from steam sources on the cooktop;
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a discreet crossing to the outside, minimizing line length and pressure losses.
The outdoor unit is installed in the backyard, on anti-vibration slabs and anti-corrosion supports, at a regulatory distance from passages and neighbors to preserve peace and quiet.
HVAC Installation Details and Finishing
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Short refrigeration path (≈ 2.5 to 3 m), thermally insulated, with careful elbows to preserve the SCOP/SEER.
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Right rear outlet with outward sloping hole for gravity drainage of condensate: no visible pump, therefore less maintenance and zero additional noise.
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Harmonized exterior capping fixed on dowels suitable for masonry; neutral silicone sealing for lasting waterproofing .
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Management of drilling above the crosspiece: respect for the lintel and dust control.
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Dedicated power supply with adequate protection according to the chosen capacity, compliance with the Quebec Electrical Code .
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Controlled vibrations : pads under the condenser, tightening of the connections to the correct torque, balancing of the air flow.
AirGreen quality procedure
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Brazing under nitrogen and weld inspection.
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Extended pressure test with dry nitrogen.
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Deep vacuum (< 500 microns) with resistance check.
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Commissioning : weighing/load adjustment according to actual length, card configuration, testing in cold/hot modes.
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Complete briefing to the customer: operating modes, filters, cleaning, eco programming, best practices.
Result: instant comfort, aesthetics respected
The indoor unit blends into the kitchen's sleek decor. The airflow is gentle and directed to avoid drafts in the cooking area. The low noise level makes conversation pleasant, even when the hood is running. In air conditioning, dehumidification stabilizes comfort without overcooling; in heating, the temperature rises quickly upon returning home.
What you need to know before installing a wall-mounted heat pump in your home
Sizing: the key to a system that “runs” at the right speed
An oversized unit cycles too often (less comfort, more wear); an undersized unit struggles in extreme cold. We always size based on the surface area, envelope, orientation, and actual use of the parts.
Refrigeration path: short, insulated, sealed
A short, well-insulated run maintains seasonal efficiency. We avoid unnecessary bends and seal all crossings to eliminate infiltration and thermal bridges.
Condensates: gravity first
When architecture allows, we favor gravity evacuation . Fewer moving parts = less risk and less maintenance. A pump is only chosen when it is really necessary.
Noise level: think about everyday life
In an open kitchen, every decibel counts. We select the blower speed, check the condenser's anti-vibration support and position the unit to avoid reflected noise .
Recommended HVAC maintenance
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Filters : rinse every 4 to 8 weeks during heavy use.
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Internal battery : gentle cleaning annually to maintain thermal exchange.
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Condenser : dusting of the fins and checking clearances (leaves, snow).
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Inspection : An annual HVAC maintenance visit extends the life of the unit and maintains performance.
Grants and programs
The Midea28 belongs to the generation of high-performance systems often eligible for energy efficiency assistance programs in Quebec. Depending on the configuration and address, incentives may apply (e.g., Hydro-Québec/municipal programs). We support our customers to document the installation (invoices, technical specifications) and optimize demand.
Common Pitfalls…and How We Avoid Them
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Placement too low or facing an obstacle: uneven diffusion → we place high and clear , above traffic.
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Uninsulated or poorly fixed line : loss of efficiency, noise → continuous insulation + tightening to torque .
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Condensate pump incorrectly : noise and unnecessary maintenance → priority to the gravity slope .
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Outdoor unit exposed to falling ice/snow: we provide slab, clearances and, if necessary, shelter/snow guard .
Tips for maximizing savings
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Use Auto/Heat mode in winter to let the algorithm modulate.
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Set a stable setpoint (e.g. 21–22°C) instead of frequent trips.
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In summer, activate dehumidification when the heat is moderate: identical comfort with fewer kWh.
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Keep interior doors ajar to encourage redistribution.
AirGreen, a local partner in Greater Montreal
Our teams work every week in Montreal , Laval , Longueuil , on the North Shore and the South Shore , for projects involving wall-mounted heat pumps , wall-mounted air conditioners , central heat pumps and interior systems (cassette, ducted, console). Each project is subject to quality monitoring and administrative support (technical documents, surveys, installation photos).
Conclusion
This Midea28 installation in Rosemont–La Petite-Patrie exemplifies our approach: careful engineering , discreet finishes, and comfort that goes unnoticed while reducing energy consumption . Are you considering an HVAC installation in an open kitchen or similar living space? We assess your home, size the right capacity, and commission a system ready for Montreal winters and summer heat waves.
Useful keywords : heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore .