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

Precise comfort and careful finishing in a Rosemont apartment

At AirGreen , we work every day in homes across Greater Montreal to provide reliable, cost-effective, and sustainable HVAC heating and cooling solutions. In this Rosemont–La Petite-Patrie apartment, our mission is to install a Haxxair wall-mounted heat pump and carefully integrate it into a clean-lined interior. The client's goal is twofold: to achieve a stable temperature in both winter and summer, and to maintain a discreet aesthetic with a smooth white ceiling.

The context: a living space that requires precision

The Haxxair indoor unit is positioned high on the wall, close to the ceiling. The illuminated display on the front shows the setpoint (here 28°C at the time of testing), which is useful for checking the mode and operating status at a glance. The living room has simple surfaces; therefore, a compact, quiet indoor head was required, capable of finely directing the airflow to avoid direct currents into the living area.

Equipment selection and sizing

• Device type : reversible wall-mounted heat pump (mini-split), ideal for apartments and plexes in the area.

• Brand : Haxxair – known for its quiet units and easy-to-use electronics.

• Capacity : selected according to the volume of the living room, the insulation and the orientation of the windows (common range 9,000 to 18,000 BTU/h for this type of space).

• Efficiency : high seasonal air conditioning performance and good heating efficiency at low temperatures, with inverter modulation to limit on/off cycles and optimize kWh consumption.

• Comfort : dehumidification mode useful in mid-season, automatic restart after failure and timer.

Our sizing method is based on a precise survey (measurement, losses, air infiltration, solar gains) in order to avoid an oversized unit that blows too hard, or an undersized one that struggles to keep up during cold peaks.

Refrigeration path and condensate evacuation

In this project, we favored a short route : a single hole behind the interior head to reach the exterior, then refrigeration and electrical connections guided in a white capping matching the facade. This configuration reduces pressure losses, simplifies subsequent service and improves aesthetics.
Condensate drainage is by gravity : the head being installed high, we create the necessary slope so that the water flows naturally towards the outside without a lifting pump , minimizing the risk of noise and maintenance.

Integration, sound levels and air settings

The orientation of the shutter (horizontal and vertical sweep) is set to evenly mix the volume of the living room without direct blowing on the sofa. In night mode , the Haxxair unit reduces the brightness of the display and adopts a softer regulation law: an advantage for rest. The result is a very contained noise level at the first ventilation level , comparable to a whisper, a guarantee of comfort in everyday life.

Key Steps to AirGreen HVAC Installation

1. Protection and preparation : tarpaulins, caulking the hole, checking ceiling clearances and center distances.

2. Fixing : Wall plate anchored level, laser controlled to ensure perfect alignment with the ceiling.

3. Drilling : controlled angle drill with outward slope ; insertion of an insulated bulkhead.

4. Connections : compliant flares, torques on the dynamometer, vacuum drawing until stable pressure, then release of the fluid and leak test.

5. Power supply : dedicated circuit with standard circuit breaker, clearly marked on the electrical panel.

6. Finishing touches : capping and clean joints, contours redone, complete functional test (hot/cold, defrosting, condensates).

7. Customer provided with : usage tips, HVAC maintenance , service schedule and support contact information.

HVAC maintenance: actions that extend lifespan

• Filters : Dust every 4 to 6 weeks during periods of heavy use. A clean filter improves airflow and efficiency.

• Heat exchanger : gentle cleaning of the fins to preserve performance and avoid odors.

• Condensates : check the slope and drainage at the start of each summer.

• Outdoor unit : 30 to 45 cm clearance all around, snow removal in winter and visual inspection of supports/brackets.

• Annual service : professional AirGreen inspection including pressure measurement, intensity control, parameter updates and deep cleaning.

Comfort and savings tips

• Stable setting : in a Montreal home, aiming for 22–23°C in heating mode and 24–25°C in cooling mode limits overconsumption.

• Open doors : for the heat pump to serve as a central wall-mounted air conditioner for the home, maintain air circulation between rooms.

• Curtains/Blinds : Managing solar gain in summer reduces the air conditioning load.

• Timer : Programming night or absence lowering improves the actual HSPF over the season.

Indoor air quality: an often underestimated benefit

The Haxxair unit's filtration captures dust and allergens. During heating periods, the uniform blown air reduces stratification (warm ceiling, cold floor) and contributes to higher perceived comfort with the same consumption. For sensitive occupants, we offer optional reinforced filter media and a replacement schedule.

Finishes and aesthetics: the AirGreen signature

The final result blends in with the apartment's white ceilings: invisible screws, flush capping , and linear alignment. Blower tests confirm the absence of unwanted vibrations. The exterior support (brackets or slab, depending on the facade) is chosen to maintain air circulation and facilitate snow removal. The openings are sealed to prevent any air or moisture infiltration, a critical point in Montreal's climate.

Measurable results and peace of mind for the client

Once commissioned, the temperature reduction time in summer is short; in winter, the setpoint increase is smooth thanks to the inverter. The electricity bill is stabilized compared to convectors or portable air conditioning, and the reduced noise level allows continuous use, even during power demands.

Grants and Eligibility

Quebec's energy efficiency programs are evolving regularly. Many high-performance wall-mounted heat pump models may be eligible if they meet the requirements (specific certifications and performance). We support our clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore to verify the criteria of the Haxxair model installed, gather the necessary evidence (certification numbers, photos, detailed invoices), and submit the application on time.

Pitfalls to avoid and good practices

• Undersize the device: it will run at full speed, make noise and wear out prematurely.

• Unnecessarily long refrigeration path : loss of capacity and risk of insufficient oiling. We favor lengths < 3 m when the configuration allows.

• Lack of drain slope : a common cause of internal leaks. The slope is checked with a spirit level.

• Exterior support not clear : Snow and ice can hinder airflow. We choose a suitable height and a solid anchor.

• Neglected maintenance : a clogged filter is enough to increase consumption and reduce comfort.

Why AirGreen?

• Local expertise in buildings and plexes in Rosemont–La Petite-Patrie , Plateau, Villeray, Saint-Léonard, etc.

• Certified team : standardized procedures (torque meter torques, deep vacuum, leak tests).

• Complete service : HVAC installation , HVAC maintenance , rapid troubleshooting and administrative support for subsidies.

• Transparency : detailed quote (lengths, accessories, supports), realistic schedule, post-installation monitoring.

In short, this Haxxair heat pump provides an elegant and measured response to the needs of an apartment in Rosemont–La Petite-Patrie : 4-season comfort, energy efficiency and impeccable integration. For a similar project in Montreal , Laval , Longueuil , on the North Shore or the South Shore , our team advises, sizes and installs with the same demanding results.