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

A clean and energy-efficient integration into a Greater Montreal condo

At AirGreen , we have just installed a Goodman wall-mounted heat pump in an apartment in the Le Sud-Ouest sector of Montreal. The owner wanted stable four-season comfort, a discreet unit and a neat HVAC installation that respects the interior aesthetics. This project illustrates our way of working: precise audit, choice of equipment adapted to the actual volume, clean execution and meticulous commissioning, with complete support on HVAC maintenance and subsidies .

Client background and objectives

The main space is a living room open to a kitchen, with low ceilings, matte green painted walls, and track lighting. The needs: efficient cooling during heat spikes, supplemental heating in the mid-season, and lower energy bills compared to electric baseboard heaters. The wall-mounted Goodman meets these criteria thanks to its inverter modulation, low power consumption, and quiet operation—an asset for a condo.

Why Goodman here?

Goodman offers a reliable and affordable wall-mounted range, with 9,000 to 12,000 BTU units commonly used for rooms of 350 to 550 sq ft depending on the envelope and sunlight. We choose this family when looking for:

• excellent value for money for a residential space;

• installation flexibility (well-designed fixing template, easy service access);

• high efficiencies and fine modulation at partial load to maintain a stable temperature without over-ventilation.

Quick reading of the environment and sizing

Before any recommendation, we measure:

• Surface area and volumes (open area, ceiling height);

• Sunshine (southwest-facing bay windows);

• Sealing (recent doors/windows, weatherstripping, air infiltration);

• Uses (daytime occupation, cooking appliances, audiovisual equipment).

The load calculation leads to a range between 9,000 and 12,000 BTU . We favor reasonable sizing: too large = short cycles, less dehumidification; too small = inconsistent comfort. Here, the Goodman wall head, installed high under the ceiling , ensures uniform diffusion along the load-bearing wall, without blowing directly onto the occupants.

Our installation method: cleanliness, safety and durability

Installation of the indoor unit

• Height and clearances. We position the headboard a few centimeters from the ceiling to promote warm air intake and clear airflow. Directional louvers adjust to prevent drafts in the seating area.

• Fixing. Installation on a mounting plate with anchors adapted to the support. Laser level control for a gravity drain without stagnation.

• Finishing. The unit arrives with protective films that we remove at the end of testing. The covers are fitted to eliminate any light and reduce unwanted noise.

Refrigeration, electricity and drain path

Even though the photo mainly shows the head, our standard includes:

• Single drilling behind the unit (∅ 65 mm typ.), with waterproof sheath and continuous insulation on the copper pair;

• Discreet white capping as required on the inside; on the outside, UV sheath and stainless steel fixings;

• Gravity condensate drain with controlled slope; when the layout requires it, we offer a silent condensate pump (splash tray, alarm contact);

• Dedicated power supply for the outdoor compressor (double-pole circuit breaker, disconnect box), and shielded communication cable between units, neatly laid. We respect clearances and circuit separation for compliance.

Commissioning and quality controls

• Deep vacuum < 500 microns, resistance test, then opening of the valves;

• Current checks , superheat/subcooling depending on conditions, defrost test;

• Remote control calibration (modes, setpoint, auto speed, dehumidification);

• Usage tips : realistic instructions, Auto vs Heat/Cool mode, filter maintenance.

Visible details and best practices

On the Goodman head, we notice:

• a wide horizontal flap that directs the flow without whistling noise;

• multi-position vertical vanes to sweep the room;

• a flush hood that neatly hides the wall crossing.

These choices are not cosmetic: well-adjusted diffusion allows the setpoint to be reached with lower ventilation , therefore more silence and savings.

Result for the customer

• Immediate cooling comfort , with effective dehumidification on hot days;

• Appreciable additional heating in spring and autumn, reducing the use of baseboards;

• Lower consumption thanks to the inverter which modulates according to the actual load;

• Preserved aesthetics : discreet integration, no unnecessary visible sheathing, careful finishing.

HVAC Maintenance: Simple and Crucial

To maintain performance:

• Cleaning filters every 4 to 8 weeks during the season;

• Annual inspection by AirGreen: heat exchange, condensates, electrical tightening, parameter updates;

• Cleaning the evaporator and fan if dust accumulates (preserves efficiency and silence).

We offer maintenance plans tailored to condos and houses in Montreal , Laval , Longueuil , North Shore and South Shore .

Grants and Eligibility

High-performance wall-mounted heat pumps are generally eligible for assistance programs in Quebec. We assist our clients in verifying the eligibility of the indoor unit and outdoor compressor combination and preparing the application (detailed invoices, serial numbers, installation photos). Our team monitors evolving criteria to optimize your investment.

What we recommend before buying

1) Size, don't guess. A load calculation avoids unpleasant surprises.
2) Think about the route. Gravity drain is preferable; a reliable pump remains a good option if the route requires it.
3) Take care of the exterior. Support the condenser outside the ice fall zone, adequate height in winter, snow guards if necessary.
4) Plan for maintenance. Filtration and service access must be simple.
5) Check the power supply. Dedicated line to the compressor, compliant protections and correctly shielded communication cable.

What we see too often… and what we correct

• Drillings without slope causing droplets on the wall;

• Interrupted insulation on the suction line (condensation and cold spots);

• Loose drain that vibrates and generates noise;

• Cables not separated from 240 V (risk of interference on communication).

Our construction sites are systematically checked at the end of the work to avoid these pitfalls.

AirGreen in Greater Montreal

We install and maintain heat pumps and wall-mounted air conditioners throughout Greater Montreal : the Southwest, Plateau, Ville-Marie , as well as Laval , Longueuil , the North Shore and the South Shore . Our team combines engineering, HVAC installation and customer service to deliver high-performance systems that last.

Want controlled comfort at home?

Whether you're renovating a condo or upgrading a single-family home, we offer solutions from Goodman , Fujitsu, Gree, Midea, LG, Sharp , and other well-known brands. We recommend equipment based on your building , not the other way around. A technical visit helps determine the right capacity, the best layout, and the most cost-effective option in light of available subsidies .

Technical sheet - key points of this installation

• Type : wall-mounted heat pump (reversible wall-mounted air conditioner )

• Brand : Goodman

• Typical capacity for this type of space: 9,000–12,000 BTU

• Installation : top of wall, gravity drain with slope; rear drilling; white capping finish if required

• Elec.: Dedicated circuit for the outdoor unit; shielded communication cable

• Commissioning : vacuum, functional tests, customer instructions, maintenance advice

Result: stable comfort , silence , optimized consumption , respected aesthetics.

Next step

Contact AirGreen for a free evaluation . We cover Montreal, Laval, Longueuil, North Shore, South Shore and coordinate logistics, HVAC installation , maintenance and financial assistance optimization for you.