Installation of a Goodman wall-mounted heat pump in Rosemont–La Petite-Patrie

A bracket installation under the awning, designed for comfort, durability and peace of mind for the neighborhood

Urban context and client objectives

In Rosemont–La Petite-Patrie , the typical architecture of brick plexes with wooden balconies and narrow streets requires specific choices for an HVAC installation . The owner wanted a compact solution, reliable in summer and off-season, without encroaching on the terrace's circulation space or disturbing the neighbors. We selected a Goodman wall-mounted heat pump with an outdoor condenser mounted on brackets at a sufficient height. The indoor head serves the main living area, with a short refrigeration path to maximize efficiency.

Why a Goodman wall-mounted heat pump for a Montreal plex?

The Goodman wall-mounted range meets the essential needs of an urban apartment: inverter modulation, high seasonal efficiency, discreet operation and availability of spare parts on the local market. The interest of a heat pump in this context:

• Efficient air conditioning in summer and efficient additional heating in spring and fall;

• Reduced consumption compared to window units and electric space heaters;

• Acoustic comfort : low exterior noise level, appreciated in backyards and condominiums.

At AirGreen, we size the BTU capacity based on a load calculation (surface area, insulation, glazing, orientation), in order to avoid oversizing which causes short cycles, temperature fluctuations and premature wear.

Installation under a canopy: clearance, silence and protection

The outdoor unit is installed under the balcony structure . This choice offers natural protection against bad weather while requiring rigorous management of clearances and vibrations :

• Galvanized wall brackets , anchored to the brick, with anti-vibration pads and precise leveling.

• Installation height above the snow cover and risks of water accumulation.

• Free front clearance to prevent recirculation of hot air under the awning; the blowing axis is oriented to limit resonances on the joists.

• Clear service passage for maintenance: no obstruction to filters, fans or fittings.

This configuration frees up the balcony floor and preserves circulation towards the French window.

Refrigerated and electrical route: short, clean, sealed

The refrigeration and power supply connections are designed to be as short as possible (approximately 3 to 6 m in most cases), which improves the efficiency and reliability of the compressor.

• Drilling the brick with sleeve , vapor barrier and masonry-compatible sealing to maintain watertightness.

• Discreet UV exterior cover protects insulation and cables.

• Nitrogen brazing to prevent internal oxidation.

• Pressure test with high pressure nitrogen, then high vacuum to 500 microns with stabilization.

• External disconnector installed within easy reach to secure any intervention, with circuit breaker dedicated to the panel.

Condensate management: priority to gravity, safety as a backup

The internal head is positioned to allow gravity drainage to a protected disposal point. If the housing configuration does not allow for the minimum slope, we integrate a compact lifting pump , non-return valve and alarm contact . On the outside, the discharge port is oriented to prevent splashing onto the brick and freezing in winter.

Key steps in AirGreen installation

1. Technical survey : wall thickness, condition of the brick, clearances under the canopy, distances to openings.

2. Installation of the interior head : free blowing, natural recovery, optimization of air mixing.

3. Installation of brackets : mechanical anchors suitable for masonry, load and alignment check.

4. Goodman condenser mounting , anti-vibration clearance control and positioning for maintenance access.

5. Wall crossing and installation of refrigeration connections under discreet cover.

6. Brazing under nitrogen, leak test , high vacuum , opening of valves.

7. Electrical connection with disconnector, current and earthing tests.

8. Commissioning : supply/return temperature measurements, pressures and setpoint adjustments.

9. Customer training : filters, modes, maintenance, winter defrosting period.

10. Photo file kept for co-ownership and guarantees.

Challenges of mounting under a balcony and solutions provided

• Risk of air recirculation under the awning: we increase the frontal clearance and direct the blowing so that the hot air can escape freely.

• Vibration transmission to the floor : anti-vibration pads, torque tightening, rigidity control of the brackets.

• Access for maintenance : lateral clearance respected and disconnector accessible without dismantling the structure.

• Masonry protection : apron, compatible seals and control of condensate runoff.

Results for housing

• Constant thermal comfort in summer with better controlled humidity than with a portable air conditioner.

• Lower operating costs thanks to inverter modulation and short refrigeration path.

• Silence perceived in the courtyard thanks to vibration decoupling and good airflow orientation.

• Simplified maintenance : easily accessible filters, clear condenser, removable cover.

HVAC Maintenance: The Routine That Lasts

To maintain the performance of the heat pump :

• Clean the filters every 4 to 8 weeks during use.

• Annual inspection : exchangers, fans, insulation, load, pressures, electrical tightening.

• Check the drain (gravity or pump) and the siphon ; clean to avoid odors and overflows.

• Checking the clearances under the balcony and the absence of objects obstructing the facade.

We offer HVAC maintenance plans adapted to plexes in Montreal , but also in Laval , Longueuil , North Shore and South Shore .

Grants, compliance and best practices

Depending on the configuration and performance values ​​of the chosen device, a wall-mounted heat pump may be eligible for certain assistance programs in Quebec . We support our customers in:

• verify eligibility and gather required documentation ;

• ensure proper installation (electricity, clearances, condensate drainage);

• carry out a documented commissioning .

AirGreen best practices to remember:

• Calculate BTU power from a heat balance, never by eye.

• Respect the clearances under the awning to avoid air recirculation and frost.

• Insulate and protect connections under UV cover; avoid excessively tight beams.

• Install an accessible disconnect switch and dedicated circuit breaker wiring.

• Place the unit above snow and away from traffic for the safety of occupants.

Why entrust your project to AirGreen?

We master the constraints of Rosemont–La Petite-Patrie plexes: brick masonry, balcony structures, alley access. Our added value:

• Accurate sizing and independent advice on brand and capacity;

• Careful execution (nitrogen brazing, high vacuum, complete testing);

• Clear documentation for co-ownerships and guarantees;

• Local after-sales service covering Montreal , Laval , Longueuil , North Shore and South Shore .

This Goodman HVAC installation on wall brackets , protected by the awning and optimized for maintenance, provides immediate and lasting comfort, in harmony with the typical architecture of Montreal plexes.