Installation of a Gree residential series wall-mounted heat pump in Ahuntsic-Cartierville

A high-mounted headboard for precise comfort and impeccable aesthetics in a Montreal bedroom

At AirGreen , we design HVAC systems that respect the architecture of Montreal homes while maximizing energy efficiency. In this project in Ahuntsic-Cartierville , we installed a Gree wall-mounted heat pump in a bright bedroom. The interior head is installed flush with the ceiling, on the window side , to optimize hot air intake in summer, improve stratification in winter, and keep the walls clear for furnishings.

Housing context and performance objectives

The owner wishes to:

• Replace an energy-consuming portable air conditioner with a four-season solution that can heat efficiently at low temperatures.

• Preserve the aesthetics of the room (light walls, exposed curtain rod) and limit visible work.

• Reduce your year-round electricity bill without compromising nighttime operating silence .

After evaluating the heat load, the 9,000 to 12,000 BTU range is preferred for this room and the adjoining area, with the possibility of later expansion to a MultiZone configuration if the client wishes to cover other rooms.

Why a Gree mural for Ahuntsic-Cartierville?

The Gree wall-mounted heat pump is a must-have here for several reasons:

• DC inverter : fine power modulation, better seasonal factor and reduced cycling.

• Low temperature heating : maintains capacity during the typical Montreal cold, ensuring winter comfort.

• Low noise level : ideal for a bedroom, even at medium or low speed.

• Reliable electronics and common parts available in Greater Montreal, simplifying maintenance.

The installed model belongs to Gree's residential series (compact indoor unit with discreet display on the front), perfectly suited to bedrooms and offices.

Positioning of the inner head: precision to the millimeter

The choice of the high area, near the ceiling , is not insignificant:

• It promotes a homogeneous air mixture : the blown air runs along the ceiling, travels through the room and descends naturally, avoiding cold areas.

• It frees up the passage area around the window and preserves the rod and curtains.

• It limits visual clutter: the head remains discreet, aligned with the cornice, with minimal interior capping and the same color as the wall.

The horizontal louvers are set to push air toward the back of the room, while the vertical louvers distribute the flow without blowing directly onto the bed. This setting prevents drafts felt at night and maximizes the comfort temperature .

Refrigeration path and condensate evacuation

The piercing is made on the back of the head with a slight outward slope to:

• Maintain a reliable (without pump) and quiet gravity drain .

• Reduce the total length of continuously insulated copper refrigeration connections, a guarantee of efficiency and durability.

• Allow for a clean, waterproof, UV-treated exterior cover for resistance to sunlight.

We ensure continuous insulation throughout to prevent condensation during humid weather. The collars, tapes, and foams used are HVAC- specified and rated for Quebec temperatures.

Outdoor unit: clearances, noise and winter maintenance

The Gree outdoor unit is installed on the courtyard side, on anti-vibration wall brackets with calibrated silent blocks. This choice:

• Provides sufficient ground clearance for snow and defrost water.

• Keeps vibrations away from the lightweight structure of the balcony.

• Facilitates maintenance (fin washing, seasonal inspection).

The recommended clearances around the intake and exhaust panels are respected in order to preserve the air flow and avoid the recycling of hot air in heating mode. The orientation limits the noise impact on neighbors; the nominal noise level remains low thanks to the inverter and fine adjustments during commissioning.

Key steps in AirGreen installation

1. Technical survey : load measurement, connection routes, identification of the electrical panel and drilling areas.

2. Tracing and plate : reinforced fixing in the structure, leveling control and anticipation of the drain slope.

3. Clean core drilling with a sleeve, waterproof sealant and adequate weatherstripping to reduce air infiltration.

4. Connections : brazed/welded annealed copper, high-density insulation, anti-UV tape, shielded communication cable according to the Gree series.

5. External mounting : galvanized brackets, dowels suitable for the support, grounding.

6. Deep vacuum : vacuum pump and digital gauges, extended leak test; charge added if length exceeds factory charge.

7. Powering up and setting up : checking intensities, supply/return temperatures , adjusting shutters and speeds for night-time comfort.

8. Delivery to the customer : instructions for use and maintenance, annual HVAC maintenance schedule.

Challenges encountered and solutions implemented

• Proximity to the window : so that the curtain does not disrupt the airflow, the head is moved forward a few millimeters and the shutters are set to blow above the rod.

• Smooth painted siding : to avoid marks around the capping, we use a flush capping and a discreet fixing which allows for clean disassembly during future painting work.

• Night silence : “Quiet/Night” mode is programmed with a progressive temperature setting to avoid perceptible restarts.

Results measured after commissioning

• Delta T in cooling greater than 10°C between return and blowing at medium speed, attesting to the good performance of the exchanger.

• Stable comfort at bedtime and at the end of the night, without air currents directed towards the sleeping area.

• Controlled consumption thanks to prolonged operation at low speed and maintaining realistic setpoints (23–24°C in summer / 21°C in winter).

Recommended HVAC maintenance

To maintain performance and longevity:

• Clean the Gree head filters every 4 to 8 weeks during use.

• Keep the outdoor unit clear (leaves, snow, objects) and monitor drainage during freeze/thaw periods.

• Schedule annual maintenance : electrical inspection, leak test, cleaning of exchangers, checking of superheat/subcooling parameters.

• After a storm or micro-outage, turn off/restore the power at the circuit breaker and restart after a few minutes if necessary.

Grants and Eligibility

Efficient wall-mounted heat pumps may be eligible for certain financial assistance when the criteria (low temperature performance, Energy Star certification, high SEER/HSPF) are met. Our team supports customers in Ahuntsic-Cartierville , Laval , Longueuil , North Shore and South Shore to validate eligibility, prepare photos/serial numbers and submit applications on time.

AirGreen Tips for a Perfectly Tempered Room

• Right capacity : Oversizing increases cycling and decreases comfort; we size according to the room envelope and orientation.

• Smart guidelines : aim for 21°C in winter and 23–24°C in summer at night; avoid too tight a gap that puts unnecessary strain on the inverter.

• Shutter management : orient slightly towards the ceiling to extend the range and avoid direct blast .

• Air quality : take advantage of the dehumidification mode during humid periods, and open the windows occasionally for additional ventilation.

Why entrust your installation to AirGreen?

We understand the constraints of Montreal housing : varied load-bearing walls, sometimes restricted access, demanding co-ownerships, and harsh climates. Our commitment:

• On-site studies , clear and quantified recommendations.

• Rigorous execution in accordance with Quebec electrical and refrigeration standards.

• Structured after-sales service and HVAC maintenance to guarantee the durability of your heat pump .

Are you in Montreal , Laval , Longueuil , on the North Shore or the South Shore ? Our teams bring the same technical standards and the same integration finesse to clean, efficient installations, ready for Quebec winters.