Installation of a Gree Wall-Mounted Heat Pump in Rosemont–La Petite-Patrie

Four-season comfort in a Montreal apartment with heritage character

In a typical Rosemont–La Petite-Patrie home, with generous ceiling moldings and deep doorways, we installed a Gree wall-mounted heat pump to provide stable comfort for both heating and cooling. Our work is part of the everyday life of older buildings in downtown Montreal : high ceilings, plaster partitions, historic woodwork—and a strong requirement for discreet integration of HVAC equipment.

Why a Gree wall-mounted heat pump for a Montreal apartment?

In this urban context, the wall-mounted heat pump is essential: it does not require ducts, it preserves the interior architecture and it consumes little energy. The latest generation Gree units operate with R-32 refrigerant , reducing the environmental footprint while improving seasonal efficiency. The strong points that we value on a daily basis:

• Inverter modulation : the power is finely adjusted to the actual load, limiting temperature variations.

• Low temperature heating : stable performance during the frequent cold weather of Greater Montreal (XLTH ranges depending on the range).

• Silence inside and out, crucial in plexes and condominiums.

• Multi-stage filtration for improved air quality .

• R-32 compatibility : better volumetric efficiency and reduced global warming potential.

Product note: The visible indoor unit corresponds to a Gree wall-mounted R-32 range (recent family of Livo/Vireo/Clivia type depending on the capacity). We always size the equipment according to the actual thermal load of the home.

Analysis of the room and choice of location

The apartment has a high ceiling and air circulation is compartmentalized by old frames. We positioned the interior headboard at the top of the wall , close to the ceiling, in order to:

1. Promote air mixing (reduced stratification) and diffusion along the length of the room.

2. Free up useful space on the wall and preserve the woodwork.

3. Optimize gravity drainage of condensate in air conditioning mode.

The choice of this wall allows a direct wall penetration (“back-to-back” installation) to the outside, limiting the length of refrigerant lines (≈ 2–3 m) and maximizing efficiency. This configuration also reduces perceived noise and simplifies long-term HVAC maintenance .

Installation details and finishes

We always respect the recommended clearances around the interior head to guarantee access to the filtration and the deflector. During this installation:

• The fixing plate was anchored in the supporting structure (anchors suitable for masonry/plaster support).

• The holes were made with a slight outward slope for reliable gravity flow of the drain.

• The refrigerant lines (liquid and gas), communication cables , and power supply have been neatly bundled and insulated. Externally, they are covered for long-lasting protection against the elements.

• The outdoor unit (courtyard side) is mounted on anti-vibration supports , raised to stay out of the snow zone and well clear for air exchange .

The result: a clean, stable, and compliant HVAC system that blends in without compromising the character of the home.

Sizing and energy performance

Sizing a heat pump in plexes/condos in Montreal , Laval and Longueuil requires consideration of: orientation, insulation, air permeability, period windows and occupancy habits. We use a load method (gain/loss balance) to select the appropriate BTU capacity per zone. In the majority of living rooms in these apartments, the 9,000 to 12,000 BTU range covers the needs, while bedrooms often require 6,000 to 9,000 BTU depending on the configuration.

Gree R-32 ranges offer high SEER/SCOP and deep modulation, reducing on/off cycling, noise, and wear. The result: energy savings and consistent comfort .

Summer comfort and mid-season heating… and more

In summer, the wall-mounted air conditioner integrated with the heat pump effectively lowers the temperature and humidity—a key point in homes where natural ventilation may be limited. In the shoulder seasons and much of winter, the machine provides efficient heating ; depending on the range, it maintains its performance during periods of intense cold . We always provide sufficient clearance around the outdoor condenser to avoid air recycling and facilitate defrosting .

Noise, vibrations and air quality: our best practices

• Silent blocks and precise alignment to limit the transmission of vibrations.

• Fan settings and louver orientation to avoid direct drafts on living areas.

• Filtration : Customers are reminded to regularly clean or replace filters. An annual HVAC maintenance slot with our technicians allows us to check pressures, refrigerant charge, condensates, and heat exchanger cleanliness.

Aesthetic integration into a heritage setting

Rosemont/Plateau moldings and woodwork require the most discreet installation possible . We choose short runs , careful exterior capping , and minimized drilling to preserve the envelope. The white finish of the Gree head blends in with light-colored walls and is easily forgotten once in operation.

Deadlines, coordination and access

In buildings with exterior staircases and narrow streets, logistics are key. We organize:

• Quick appointment scheduling with convenient time slots.

• Coordination with the co-ownership/management when necessary.

• Protection of passage areas, dust-free drilling (local suction), and waste disposal.

Commissioning includes measurement of parameters (vacuum, tightness, intensities), programming of remote controls and clear user training for the customer.

Grants and budget advice

Several energy efficiency programs in Quebec promote the adoption of high-efficiency wall-mounted heat pumps . We support our clients in Montreal , Laval , Longueuil , the North Shore and the South Shore to identify applicable measures and compile files (detailed invoices, technical data sheets, proof of compliant installation).

HVAC Maintenance: What We Recommend

1. Filters : monthly inspection during periods of intensive use; cleaning as needed.

2. Outdoor unit : Keep the perimeter clear (leaves, snow) with 30–60 cm free on the sides and rear.

3. Drain : Check the flow at the start of summer; purge if necessary.

4. Annual inspection by AirGreen: checking connections, pressures, temperatures, cleaning exchangers, updating settings.

These simple actions ensure a longer lifespan , optimized consumption and reliable air quality.

Result for the customer

• Stable temperature in the main living area.

• Reduced operating costs compared to electric baseboard heaters.

• Silence and gentle diffusion of air, suitable for everyday life.

• Increased real estate value thanks to a recent, clean and well-integrated system.

Why AirGreen

We are a local HVAC installer , familiar with the realities of Greater Montreal : century-old plexes, recent condos, houses on the North Shore and the South Shore . Our commitments:

• Rigorous sizing and transparent recommendations.

• Certified installation and clean finishes.

• Responsive after-sales service and structured HVAC maintenance .

• Neutral advice on R-32 brands and ranges (Gree, Fujitsu, Sharp, Midea, etc.), according to your priorities of comfort, budget and efficiency.

Are you considering a wall-mounted heat pump for your apartment or complex in Rosemont , Plateau-Mont-Royal , Villeray , or elsewhere? We plan, install, and maintain systems that respect your spaces and your built heritage.