Four-season comfort in an urban NDG living room: a compact, elegant installation ready for Montreal winters
Client context and objectives
At AirGreen , we are working on a renovated apartment in Côte-des-Neiges–Notre-Dame-de-Grâce . The owner wanted a discreet HVAC solution to cool the living room in the summer and support the heating in the off-season, without major renovations or wasted space. Priorities: silence , efficiency , aesthetics , and reliability in extreme cold.
We offer a wall-mounted Elios Moovair heat pump (R-32 range) , 12,000 BTU configuration - sized after a simplified load calculation (surface area, orientation, insulation, internal inputs). This capacity typically covers 400 to 600 sq. ft. in an open living area, with a comfortable margin for peaks.
Why the Moovair (R-32) range meets the need
-
R-32 refrigerant : better seasonal efficiency than R-410A and reduced charge for the same power.
-
Seasonal efficiency : Competitive SEER/SCOP, ideal for reducing annual consumption.
-
Operation in cold weather : maintaining useful capacity around −25°C , essential for Montreal , Laval , Longueuil , North Shore and South Shore .
-
Acoustics : very low interior noise level, suitable for open living spaces and terraced apartments.
-
Design : minimalist facade integrated into the decor; compact size above the wall elements.
Key words : heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore .
Installation process — clean, fast, controlled
Preparation and tracing
We validate the location at height (~2.20 m) for optimal air diffusion above the furniture and away from heat sources. The installation template is fixed with a laser; we identify the shortest cross to the outside and the route of the connections.
Drilling and passing lines
-
Wall crossing to the required diameter with controlled negative angle.
-
Installation of insulated refrigerant connections, communication cable, and power supply.
-
Discreet white capping near the outlet for a neat finish and easy maintenance.
Condensate management: compact and quiet pump
Since gravity drainage is not possible (horizontal path imposed by the architecture), we install a condensate pump under the interior head. Advantages:
-
No visible gutters and no additional drilling in the baseboard;
-
Safety (level sensor with safety stop);
-
Easy maintenance (accessible hatch).
Connection, vacuuming and commissioning
-
Calibrated flares and tightening torques respected;
-
Deep vacuum with micronmeter until stable;
-
Leak check and R-32 refrigerant charge according to actual length;
-
Settings: blowing mode, sweeping , and set temperature;
-
Measurements of blowing temperature, intensity, and delta T under load.
Aesthetic result and thermal comfort
The wall head integrates into the decor (frames, wall light). The wiring is contained; the condensate box remains compact and harmonized. In use:
-
Responsive and homogeneous cooling of the living room in summer;
-
Efficient additional heating in autumn and spring;
-
Low noise level , ideal for teleworking and home cinema.
Sizing tips for similar spaces
-
9,000 BTU : Well-insulated bedrooms/offices up to 350 sq. ft.
-
12,000 BTU : Living rooms 400–600 sq ft, open plan.
-
18,000 BTU and up : large open areas, high ceilings or multiple doors.
A load calculation by our advisors remains the reference to avoid over-sizing (short cycles, discomfort) or under-sizing (noise, wear).
Technical points to remember about this pose
-
Controlled working height , clearances respected for air intake and maintenance.
-
Short link length (better efficiency).
-
Discreet path via capping and ceiling; no visual impact.
-
Condensate pump with high level cut-off to prevent any risk of flow.
-
Dedicated power supply and compliant protections.
HVAC Maintenance: The Key to Performance
To maintain performance and longevity:
-
Filters : clean every 4 to 8 weeks during the season.
-
Evaporator battery : gentle dusting; avoid corrosive products.
-
Condensate pump : check the tank and float at the start of summer.
-
Outdoor unit (if accessible): minimum clearance of 30 cm, cleaning of the fins.
-
Annual AirGreen inspection : pressure/consumption check, condensate test, electrical check.
Regular HVAC maintenance reduces consumption by up to 10–15% and extends equipment life.
Energy subsidies and savings
Depending on the Energy Star configuration and performance at −25°C , a wall-mounted heat pump like the Moovair (R-32) may be eligible for assistance in effect in Quebec (municipal/provincial programs). We support our customers in:
-
Check eligibility;
-
Prepare evidence (model, serial numbers, photos);
-
Optimize the usage strategy (stable setpoint, automatic ventilation, seasonal programming).
Common Mistakes to Avoid (and How We Prevent Them)
-
Installation too low → air recirculation and discomfort: we respect the manufacturer's clearances.
-
Improvised gravity drain without slope → risk of infiltration: here, pump sized and tested.
-
Connections too long → loss of capacity: layout designed for compactness .
-
Absence of controlled vacuum → humidity in the circuit: we aim for a deep vacuum measured with a micron meter.
What the customer actually gains
-
Immediate summer/winter comfort in the living area.
-
Lower bills compared to traditional air conditioning and electric baseboard heaters.
-
Real estate value : modern, aesthetic, and sought-after equipment in NDG.
-
Peace of mind : guaranteed AirGreen installation and local after-sales service.
What if your project is different?
We cover Montreal , Laval , Longueuil , North Shore and South Shore for various needs: apartments, plexes, houses, offices. Depending on the configuration, we also offer multi-zone , ceiling cassettes , or central systems (R-32/R-454B) when relevant.
Technical sheet — NDG installation (summary)
-
Type : single-zone wall-mounted heat pump
-
Brand : Elios Moovair (R-32)
-
Installed capacity : 12,000 BTU
-
Condensate management : compact pump under the head
-
Finish : minimalist white capping , ceiling path
-
Installation height : ~2.20 m
-
Commissioning : deep vacuum, leak tests, delta T measurements
Your project with AirGreen
We combine thermal diagnostics , grant advice , high-quality HVAC installation and maintenance for lasting comfort. Let's talk about your space: a technical visit is enough to validate the BTU capacity , the routing of the lines , and the safest drainage strategy .