Installation of a TOSOT Inverter wall-mounted heat pump in Villeray (Montreal)

A clean, robust HVAC system designed for our winters

At AirGreen , we install heat pumps that must perform in both winter and summer, without ever compromising the building's aesthetics. In this brick duplex in Villeray (Montreal) , our team installed a TOSOT Inverter on exterior wall brackets to serve an interior wall-mounted head. The result: a compact, quiet and easily accessible HVAC installation for HVAC maintenance , perfectly suited to the neighborhood's residential fabric.

Why TOSOT for a Montreal duplex?

TOSOT—a Gree Group brand—offers reliable inverter units, valued for their fine modulation and cold-weather performance. In a typical Montreal building (brick walls, narrow alleys, close neighborhoods), we seek a balance between:

• seasonal energy efficiency in air conditioning and heating;

• reduced noise level on the neighborhood side;

• compactness to preserve the footprint on the facade;

• accessibility for future interventions.

This unit meets these criteria while blending discreetly into the brick cladding.

Preliminary analysis: brick facade, air circulation and snow management

Before installing the machine, our technicians assess:

1. Clearances required around the condenser to prevent recirculation of hot air in summer and to facilitate defrosting in winter.

2. Installation height : raised to avoid the accumulation of snow and ice, while respecting municipal limits and accessibility for maintenance.

3. Rigidity of the support : a mechanical anchor in the brick (and not in the mortar) to guarantee structural strength.

4. Route of refrigerant connections to the interior head with discreet capping , sealed penetrations and adequate slopes for condensate drainage on the interior side.

Installation on brackets: stability and anti-vibration

The outdoor unit is mounted on galvanized wall brackets sized to the condenser load. We interpose anti-vibration mounts and protective pads (blue in the photo) which:

• limit the transmission of vibrations to the masonry;

• reduce the structure-borne noise perceptible inside;

• extend equipment life by cushioning starts/stops.

The leveling is laser-controlled. The fixings are made of stainless steel or hot-dip galvanized, with sealing suitable for period brick substrates.

Connections, sealing and vacuuming

On the refrigeration side, we:

• bend and insulate the copper tubes with UV-resistant insulation;

• add finishing covers to protect exposed sections;

• we carry out brazing under nitrogen to avoid internal oxidation;

• We perform a nitrogen pressure test , then a deep vacuum draw to best practice levels (microns), ensuring a healthy charge and compressor longevity.

These steps, invisible once the installation is complete, are nevertheless the key to stable performance and reliable heating in the heart of Montreal's winter.

Power supply: safety and compliance

The TOSOT condenser is connected to a dedicated circuit from the electrical panel, with an outdoor disconnect switch within easy reach (safety and service requirement). We use weather-resistant conduits , watertight cable glands, and code-compliant grounding. Every screw and clamp is chosen to resist corrosion, a critical requirement in a salt and freezing environment.

Settings and commissioning: the AirGreen difference

Careful commissioning immediately optimizes comfort and consumption:

• superheat/subcool check;

• calibration of indoor head ventilation speeds ;

• defrost and airflow tests;

• usage advice for the owner (recommended temperature ranges, automatic mode management, filter maintenance, clearances to be maintained around the condenser).

Result: a uniform temperature , a discreet noise level and remarkable responsiveness in mid-season.

Salient installation details

• Building : Brick duplex in Villeray (Montreal)

• Equipment : TOSOT Inverter , wall-mounted heat pump (outdoor unit on wall)

• Support : wall brackets with anti-vibration pads

• Finish : discreet exterior capping, sealed penetrations

• Objective : efficient additional heating in winter, silent air conditioning in summer

• Duration of intervention : half a day with two technicians

AirGreen Tips for a Condenser on a Brick Facade

1. Clearances : Maintain manufacturer's clearances on the sides and front; avoid closed recesses.

2. Height : provide sufficient elevation to get through the winter without snow suction.

3. Air outlets : do not direct towards a narrow pedestrian passage or a nearby window.

4. Water management : check the flow during defrosting to avoid creating ice patches.

5. HVAC maintenance : cleaning of fins, inspection of connections, annual check of tightness and operation in heating mode.

Pitfalls to avoid (field experience feedback)

• Fixings in the mortar : These will eventually come loose with freeze/thaw cycles. Always aim for sound brick.

• Undersized capping : it opens with expansion and leaves the insulation exposed to UV rays. We size it large and clip it correctly.

• Air recirculation : Condenser too close to a corner or obstacle. We maintain a clear field in front of the exchanger.

• No anti-vibration pads : vibrations transmitted to the neighbors' living room. Anti-vibration pads are a must in a dense urban environment.

Grants and Eligibility

Modern, high-efficiency heat pumps that perform well in cold weather may be eligible for assistance programs in Quebec (depending on configuration and technical specifications). When a file is eligible, we assist the owner in gathering evidence (serial numbers, photos, energy assessments) to reduce the net cost of the project.

And after installation? Our maintenance plan

AirGreen offers annual HVAC maintenance , which includes: outdoor coil washing, fan inspection, electrical check, heating and cooling performance testing, capping and insulation inspection, and personalized recommendations. Regular maintenance reduces consumption, prevents capacity loss, and extends the system's lifespan.

What the owner earns

• Instant four-season comfort ;

• Clean and safe facade thanks to the raised installation;

• Noise pollution reduced by the studs and positioning;

• Quick maintenance access without scaffolding;

• Improved resale value through careful and documented installation.

AirGreen, your local partner

We work weekly in Montreal, Laval, Longueuil, the North Shore, and the South Shore for wall-mounted , multi-zone , and central heat pump projects. Our promise: clean, compliant, and efficient installations, supported by proactive customer service and certified teams.