Installation of a Senville wall-mounted heat pump in Le Sud-Ouest

A wall-mounted condenser designed for Montreal winters: clearances respected, vibrations controlled, aesthetics preserved

Background and objectives

In a brick plex in Southwest Montreal , the owner wanted to modernize his four-season comfort without encroaching on the ground floor space of the low garden. The apartment is in a semi-basement with low windows and a metal balcony above. Our priorities: protect the equipment from snow and runoff water, maintain a clean facade, reduce noise pollution for neighbors and facilitate HVAC maintenance .

We have chosen a Senville wall-mounted heat pump (capacity adapted to the load of the living areas), known for its quiet operation and stable diffusion in air conditioning and off-season heating.

Choice of exterior positioning

• Wall bracket mounting : The unit is attached to the brick, above the snow line and out of reach of gravel. This height maintains sufficient clearance under the unit for frost drainage in defrost mode.

• Front clearance : the unit is located between the basement windows and the balcony , with the recommended clearances at the rear, above and in front to ensure air supply and avoid recirculation.

• Vibration management : silent blocks on the brackets, torque tightening, rubber washers and level control to prevent buzzing transmitted to the masonry.

Technical course and protections

• Sheathed refrigerant lines run along the right side in a brown/terracotta-tinted service duct that matches the brickwork. The service loops are designed to absorb expansion.

• Outdoor junction box within easy reach, waterproof mounting and UV sheath for the cable.

• Condensates : protected descent on gravity slope with low outlet against splashing on river stone bed; retaining collars and anti-air rise siphon.

• Drilling : clean core drilling with sealing jacket and vapor barrier to prevent infiltration and thermal bridges.

• Defrosting & drainage : area under the appliance clear of any obstacles; mineral bed to drain water and limit projection onto the facade.

Inside: simple and efficient diffusion

The wall-mounted fan head is positioned to sweep the main living area without blowing directly onto the occupants, with unobstructed air intake. Line lengths have been optimized to limit pressure losses and protect compressor reliability.

AirGreen Method: Key Steps

1. Thermal assessment (surface area, insulation, orientation, internal contributions) and choice of BTU capacity.

2. Layout plan : templates, checking clearances near the balcony and windows, shortest route.

3. Brazing under nitrogen , deep vacuum , leak testing and pressurization.

4. Commissioning : control of intensities, insufflation temperatures, defrost cycle and speed settings.

5. Finishing touches : adjusted capping, seals, water management under the unit, cleaning and delivery of usage recommendations.

Results obtained

• Immediate comfort with air conditioning: rapid drop in humidity and uniform temperature in rooms.

• Stable mid-season heating , ideal in spring and fall to reduce the use of electric baseboard heaters.

• Controlled noise level : thanks to silent blocks and fine speed adjustment.

• Neat facade : discreet cable ducts, tidy wiring, no footprint.

Good usage practices

• In summer, aim for a set point of 23–24°C for an excellent comfort/energy ratio.

• Prefer continuous operation at low speed rather than short cycles.

• Clean the inner head filters every 4 to 6 weeks.

• Clear the space in front of the condenser (foliage, objects, snow) by 60 to 100 cm .

Recommended preventive maintenance

An annual HVAC maintenance includes:

• washing the condenser and evaporator,

• checking the condensate flow and the siphon,

• checking the electrical connections and the screws of the brackets,

• reading of operating pressures/temperatures and updating of fan parameters.
  This maintenance maintains seasonal efficiency and extends compressor life.

Notable technical points on this project

• Brick masonry : compatible seals, suitable anchors and reinforcement plates at the brackets.

• Basement windows under the appliance: pay attention to the release of hot air in winter to avoid it being re-entered through the openings; controlled orientation.

• Nearby glass balcony : check the airflow to avoid recirculation against the guardrail; the device is centered on the facade with lateral clearance.

• Water management : stone bed and natural slope to drain rain and defrosting, limiting splashes on the baseboard.

Grants and support

Depending on the configuration and performance of the chosen system, assistance programs may apply. Our team supports homeowners in Montreal, Laval, Longueuil, the North Shore, and the South Shore : supporting documents, technical data sheets, proof of installation, and energy optimization advice.

Mistakes to avoid in similar contexts

• Fixing the device too low: risk of burial under snow and stagnant frost .

• Neglecting silent blocks : vibration transmission to the masonry and acoustic discomfort.

• Undersize the condensate slope: backflow and traces on the facade.

• Forgetting the nearby isolating box : non-compliance and longer interventions.

• Install too close to a full balcony or a perpendicular wall: air recirculation and reduced performance.

Why AirGreen for your project in the Southwest (and throughout Greater Montreal)

• Expertise in urban contexts : narrow courtyards, balconies, low windows, neighborhood rules.

• Neat finishes : aligned chutes, clean seals, controlled aesthetics.

• Complete service : study, installation, HVAC maintenance , rapid troubleshooting and usage advice.

• Full coverage: Montreal , Laval , Longueuil , North Shore , South Shore .

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