Installation of a Gree R-32 wall-mounted heat pump in Rosemont–La Petite-Patrie

Four-season comfort in a Rosemont plex: careful, quiet installation designed to last

Project background

In a typical Rosemont–La Petite-Patrie apartment, we installed a Gree R-32 wall-mounted heat pump to efficiently heat and cool a master bedroom overlooking the backyard. The goal: stable comfort, minimal noise, and controlled energy consumption, while respecting the interior aesthetics.

Choice of equipment

• Type : wall-mounted heat pump (mini-split) , inverter technology.

• Brand : Gree (recent R-32 range).

• Typical capacity : 9,000 to 12,000 BTU for a closed bedroom or office.

• Advantages of R-32 : better seasonal efficiency, reduced load, reduced global warming potential compared to R-410A.

• Connectivity : integrated Wi-Fi module for remote control and optimization of time slots.

Interior layout: clean, compact, strategic

The wall head is placed high above a cupboard, centered to maximize air diffusion and avoid excessively rapid returns to the probe.
Our points of attention:

• Clearances respected (ceiling and side panels) for optimal mixing and easy maintenance.

• Neat rear right drilling , with sealing ring and closed insulators on the connections.

• Condensate management : gravity with regular slope > 1%, eliminating the need for a pump and reducing noise risk.

• Acoustic treatment : anti-vibration shims and tightening control to maintain silent operation.

Route of refrigeration and electrical connections

• Estimated length : 4 to 5 m to the outdoor condenser (courtyard/balcony).

• Exterior capping : white , discreet, UV-resistant, waterproof connections for rain and snow.

• Dedicated power supply : compliant circuit breaker and cable sized according to capacity; inter-unit communication protected in the same trunking.

AirGreen installation methodology

• Brazing under nitrogen and pressure testing (≈ 450 psi) to ensure watertightness.

• High vacuum : < 500 microns with stabilization, controlled by digital vacuum gauge.

• Commissioning : flow balancing, superheat/subcooling control, condensate flow verification.

• Finishing : sealing, firestopping if necessary, and clean routing of cables.

Result for the occupant

• Immediate comfort in cooling in summer and in heating in the off-season and winter.

• Quiet in night mode thanks to the low-speed interior fan and the inverter compressor modulating the power.

• Savings : fine modulation, programming via Wi-Fi , washable filters to maintain performance.

Recommended Maintenance (and Why It Matters)

Regular HVAC maintenance preserves performance and longevity:

• Cleaning the filters and the inner head exchanger.

• Inspection of capping , connections , and condensate drainage.

• Checking the operating parameters in cold/heat mode.
  We offer maintenance plans tailored to residences in Montreal, Laval, Longueuil, North Shore and South Shore .

Technical points and best practices noted on this project

• High installation ideal for freeing up the partition and better stratifying the air.

• Single clean drilling behind the unit: no visible ducting inside.

• Gravity drain : increased reliability, zero pump noise.

• Respect clearances to avoid recycling of hot/cold air .

• Service access retained (right crankcase) for future maintenance.

Grants and eligibility (depending on models)

Several high-efficiency R-32 wall-mounted heat pumps may be eligible for Quebec programs , depending on the exact model , certified performance , and building conditions. Our team verifies eligibility , prepares files , and advises on the most cost-effective power for your home.

Why entrust your HVAC installation to AirGreen?

• Specialists in wall-mounted heat pumps in Greater Montreal .

• Careful execution : waterproofing, vacuum, finishes, and aesthetic integration.

• Complete support : capacity selection, room-by-room installation advice, maintenance, and grant support.

• Local availability : teams based in Montreal , responding quickly in Laval , Longueuil , North Shore and South Shore .

Tips for your own project

1. Choose the right power (BTU) based on the surface area, sunlight and insulation.

2. Favor R-32 for better efficiency and lower costs.

3. Take care with the location : high on a load-bearing wall or rigid partition, away from obstacles.

4. Prefer gravity drain when possible.

5. Schedule annual maintenance to maintain warranty and performance.

Need a wall-mounted heat pump installation in Montreal, Laval, Longueuil, on the North Shore or the South Shore?
At AirGreen , we design sustainable, clean and quiet HVAC systems , with clear monitoring and technical advice at every step.