Installation of a GREE Livo R32 wall-mounted heat pump in Chomedey (Laval)

A neat HVAC upgrade on a light brick facade, designed for four-season comfort and simplified maintenance

Background and objectives

In Chomedey (Laval) , we are modernizing the comfort of a single-story light brick house with a GREE Livo R32 wall-mounted heat pump . The owner was looking for a discreet system, efficient in heating in winter and cooling in summer, with a clean, durable and easy-to-maintain HVAC installation . Our intervention focuses on:

• energy performance and stability in cold weather;

• aesthetic integration on the visible facade of the side passage;

• the reliability of refrigeration connections and condensate drainage;

• minimal noise level in the neighborhood and indoors.

Why the GREE Livo R32 for this residence

The Livo R32 belongs to the recent generations with R-32 refrigerant , more efficient and with a lower GWP than older fluids. Its advantages for a Laval home:

• High-precision inverter : fine modulation, long cycles, controlled consumption;

• Four-season comfort with low temperature capacity maintenance;

• Silence in night mode and gentle interior ventilation;

• Compact size ideal for narrow side aisles and close windows;

• Compatibility with Wi-Fi options for easy control.

AirGreen Approach : We size BTU capacity based on actual heat loss (envelope, solar orientation, glazing, infiltration). The goal is never overcapacity, but a balance between comfort, efficiency, and component longevity.

Reading the site and external installation

The pale brick facade and closely spaced vertical windows require precise positioning. The single-fan outdoor unit is mounted on galvanized wall brackets , raised off the ground for:

• protect the device from water splashes and dust;

• facilitate the evacuation of frost in winter;

• reduce the transmission of vibrations to the ground and foundations.

We keep it away from openings (windows) and the roof drain to respect the suction/blowing clearances . Since the environment is a busy side passage , we add anti-vibration pads and sufficient service space on the valves and electrical housing side.

Route of connections and finishes (construction site view)

The white capping follows a vertical descent from the inner head to the condenser. This trajectory:

• shortens the equivalent length (≈ 3 to 5 m);

• limits changes in direction, therefore pressure losses ;

• unifies the aesthetics with light masonry and woodwork.

Insulated copper tubing is bent to the specified radius without crushing; the insulation is continuous to the fittings. Communication and power wiring runs in a dedicated conduit to prevent stray induction . A circuit breaker and an external circuit breaker compliant with the nameplate are installed in accordance with the current electrical code .

The holes are made to the adjusted diameter with a sheath , low-expansion foam and a membrane ensuring air/vapor barrier continuity. The external joints receive a polyurethane sealant resistant to UV and freezing/thawing.

Condensate management: gravity as a priority

The floor configuration and the slope of the passage allow for gravity drainage of condensates in air conditioning mode. We ensure:

• a constant slope without counter-slope;

• a siphon where necessary to prevent odors from rising;

• antifreeze protection at the exit point if exposed to cold.

If geometry requires it on other sites, we integrate low-noise lifting pumps with accessible tank and non-return valve. Here, gravity ensures quiet and reliable operation.

Instrumented commissioning

Commissioning follows the AirGreen procedure:

1. Nitrogen test at stabilized pressure, leak test;

2. Deep vacuum draw (microns) and ascent test ;

3. Charge opening and subcooling/superheat check;

4. Electrical checks (continuity, intensity, tightening);

5. Setting of optimal summer/winter modes, flow rates and settings ;

6. Customer training : best practices, maintenance, code reading and advanced functions.

A commissioning sheet (serial numbers, measurements, photos) is archived for warranty and, where applicable, for assistance programs .

Result: performance, silence and preserved facade

The compact outdoor unit preserves circulation in the side corridor. The blowing is free, without recirculation against the brick. Inside, the wall-mounted head delivers a uniform flow , limiting gradients between the living area and passageways. Initial measurements confirm:

• temperature stability in heating mode on cool evenings;

• effective dehumidification during summer humidity peaks;

• reduced noise levels , particularly appreciated at night.

HVAC Maintenance: Recommended Schedule

To preserve the performance of the heat pump and air quality:

• Filters : cleaning every 4 to 8 weeks in season;

• Outdoor unit : clearing of leaves and dust, visual check of capping and fixings;

• Annual AirGreen inspection : cleanliness of coils, electrical tightening, operating measurements (temperatures, intensities), verification of the load rate by indirect methods;

• Winter : Maintain free space under the unit and in front of the fan to ensure efficient defrosting.

AirGreen Tip : A clogged filter increases consumption and reduces heating capacity in cold weather. Simple, regular maintenance makes all the difference.

Technical points to remember for your project

• Sizing : The correct BTU capacity ensures long and quiet cycles;

• Equivalent length : a short, well-bent path protects compressor reliability;

• Clearances : they determine the yield in summer as well as in winter;

• Sealing of the envelope : essential to prevent infiltration and thermal bridges;

• Quality of the supports : galvanized brackets and anchors adapted to the brick for durability.

Grants and Compliance

Recent high-efficiency heat pumps using R-32 are potentially eligible for financial assistance programs when performance and installation criteria are met. We support our clients in:

• validate eligibility ;

• compile the file (detailed quote, photos, serial numbers);

• submit the request and follow up until payment.

Safety and Neighborhood

The construction site is being carried out on ladders with facade protection and corridor markings. Tests are taking place at agreed times to limit noise impact. Fasteners and silent blocks reduce vibration transmission to living areas and the immediate neighbors.

What the owner earns every day

• Immediate and measurable comfort ;

• Better controlled electricity bills compared to baseboards;

• A connectable and easy-to-control system;

• A clean facade thanks to the white capping aligned with the existing elements.

Our service coverage

Our AirGreen teams operate in Laval , Montreal , Longueuil , the North Shore and the South Shore for HVAC installation , HVAC maintenance and troubleshooting . Each project benefits from post-installation monitoring and recommended maintenance to ensure the sustainability of the investment.

Conclusion

This HVAC installation of a GREE Livo R32 in Chomedey (Laval) illustrates our method: precise load study, short and protected routing , robust brackets , matching capping , instrumented commissioning and skills transfer to the client. The result: stable comfort , tangible energy efficiency and aesthetic integration on a light brick facade - ready to face the seasons of Greater Montreal .