Installation of a Gree wall-mounted heat pump in Plateau-Mont-Royal

Optimizing the four-season comfort of a Montreal plex without altering its brick facade

In a typical building in the Plateau-Mont-Royal region , our team is installing a Gree wall-mounted heat pump to provide heating and air conditioning in a home with significant temperature fluctuations. The challenge is twofold: to provide a high-performance, durable HVAC system while respecting the aesthetics of a red brick facade overlooking a narrow alley.

The customer context: efficiency, silence and discretion

The owner was looking for a solution:

• Energy efficient to reduce annual bills and improve mid-season comfort;

• Quiet to remain compatible with alley life and neighboring windows;

• Discreet , with a clean passage of refrigerant connections aligned with the lines of the masonry;

• Scalable , so that a second interior head can be added if a future layout requires it.

After an estimate visit, we recommend a Gree wall-mounted inverter compressor ( Energy Star residential range), capable of excellent performance in summer and reliable heating during the frequent cold weather in Montreal, Laval, Longueuil, North Shore and South Shore .

Technical choices and site preparation

Our technicians begin with a precise reading :

• Condition of brick and mortar, location of joints for secure anchoring ;

• Optimal route of connections (refrigerants, electrical, condensate drain) with vertical capping ;

• Minimized drilling points to preserve the building envelope;

• Installation that respects the clearances around the condenser (clear suction and discharge) and the distance from the windows.

We also validate the location of the external disconnect switch and the size of the circuit dedicated to the electrical panel, in accordance with RBQ rules and the manufacturer.

Installation details: clean, solid, reversible

Supports and height.
The condenser is mounted on corrosion-resistant galvanized wall brackets . We position the unit high up : this frees up space, keeps the machine away from water and snow projections, and limits vibrations transmitted to the ground. The level setting is checked with a dynamometer for even load distribution and optimal oil flow in the circuit.

Brick-colored capping.
The connections are protected by a vertical conduit cover (capping) that follows a clear alignment between the bricks and the window frame. The chosen reddish-brown shade harmonizes with the masonry: from the alley, only a thin, orderly line is visible. Since UV rays and freeze-thaw are severe in Montreal, we favor UV-stabilized covers with stainless steel screws.

Drilling and sealing.
A slightly outwardly inclined hole accommodates the connections. Around the sleeve, we install a vapor barrier and a brick-compatible elastomeric seal to prevent any air or water infiltration. Inside, a clean cable gland prevents thermal bridges.

Refrigerant connections and vacuum drawing.
The annealed copper tubes are flared to the torque and then insulated in a closed cell along their entire length. We perform a deep vacuum (≤ 500 microns) and a strength test to ensure the absence of moisture and micro-leaks. Any additional filling is adjusted according to the actual length (approximately 3 to 5 m here), then recorded on the installation sheet.

Power supply and disconnect switch.
The dedicated line is protected by a suitable circuit breaker . The sealed disconnect switch on the front panel allows for quick isolation of the device for maintenance. The electrical routing follows the cap for a clear and safe visual reading .

Condensate management.
The drain is laid at a regular slope, protected by the capping. The drain is discharged by gravity to the outside, with a non-return valve and an outlet outside the frost zone and traffic areas. In a future multi-head configuration, a condensate pump can be added if a slope-free route is required.

Commissioning: measurements and adjustments

• Pressures and temperatures are checked in cold and hot modes;

• Inverter current and setpoints are monitored to confirm rapid achievement of the thermal load;

• The noise at 1 m and 5 m is measured: the machine remains within the recommended thresholds for dense alleys;

• Users receive a user guide : remote control instructions, filters, eco-modes, intelligent night-time temperature management.

What this means for housing

• Consistent comfort in summer and winter, with a soft and stable breeze thanks to inverter modulation;

• Reduced noise outside, appreciable near windows and neighbors;

• Significant energy savings compared to electric convectors or portable air conditioners;

• Aesthetics respected : the unit integrates into the facade, the capping remains discreet, the drillings are invisible from the inside.

Grants and Compliance

Depending on the BTU capacity chosen and the Energy Star certification of the installed unit, this type of wall-mounted heat pump may be eligible for current assistance (e.g., LogisVert programs and applicable efficiency programs). At AirGreen, we:

• check eligibility before ordering;

• provide the documents (approval numbers, detailed invoices, installation photos);

• We support the client in submitting requests in order to optimize the net cost of the project in Greater Montreal .

AirGreen Best Practices for Brick Buildings

1. Suitable anchors : expansion anchors/chemical anchors depending on the density of the brick and the condition of the mortar; controlled tightening torque.

2. Vibration decoupling : silent blocks under the sole and neoprene strips to prevent transmission to the interior joists.

3. Runoff management : position the unit outside of drip edges and away from downspouts; protect the drain outlet.

4. Aligned paths : draw axes parallel to the brick courses and woodwork for a simple finish.

5. Scalable pre-wiring : anticipate the addition of a second head by reserving a passage; this limits future work.

HVAC maintenance: simple and profitable

To maintain performance and longevity:

• Clean the internal filters every 4 to 8 weeks during the usage season;

• Have annual maintenance carried out (leakage check, evaporator/condenser cleaning, condensate test, electrical checks);

• Clear the outdoor heat exchanger (leaves, dust, frost) and maintain minimal clearance on the sides and rear;

• Monitor consumption : an unusual increase may indicate a clogged filter or obstruction.

AirGreen offers modular maintenance plans for Montreal, Laval, Longueuil, North Shore and South Shore , with seasonal reminders and intervention priorities.

Usage tips for the Plateau and dense neighborhoods

• In summer, choose a stable setting (e.g. 23-24°C) with shutters oriented to circulate the air without direct drafts.

• In winter, activate the heating mode with automatic defrosting ; avoid cutting off the power during very cold weather to allow for protection cycles.

• Respect local quiet hours : Inverter modulation already helps, but avoiding sudden power surges late at night is good neighborhood practice.

Why Gree + AirGreen works so well here

Gree's inverter platform , its compactness , and the availability of parts in Quebec make it a safe bet for Montreal plexes. For our part, we provide:

• Installation engineering tailored for masonry buildings ;

• Mastery of standards and requirements for eligibility for aid;

• Local, accessible and fast after-sales service .

Balance sheet

This installation illustrates how a well-chosen and professionally installed wall-mounted heat pump transforms the comfort of a home, without compromising on aesthetics and neighborhood peace and quiet. In the Plateau-Mont-Royal region , as elsewhere in Greater Montreal , AirGreen delivers clean, compliant HVAC installations ready for years of savings .