Installation of a Gree (R-32 range) wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension

A typical Montreal apartment with crown molding, a light-filled living room/office, and a clear need: consistent comfort year-round without increasing energy consumption. Here, we're installing a Gree R-32 wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension as the primary summer cooling solution and an energy-efficient backup to the existing heating system.

An impeccable interior installation designed for everyday life

Controlled positioning and blowing

The wall head is installed at the top , under the molding, to promote airflow that runs along the ceiling before gently descending. This orientation:

• avoids direct airflow onto the living area and office;

• homogenizes the temperature from floor to ceiling;

• allows easy access to filters for HVAC maintenance .

The Gree R-32 's compact size fits discreetly against the wall, without encroaching on window treatments or furniture space.

Clean drilling and short path (back-to-back)

The back-to-back configuration limits the length of refrigeration lines to only 2–3 m . We install:

• sheath and vapor barrier at the piercing to prevent any moisture migration;

• external chute matching the facade for a neat finish;

• anti-vibration loop and drop arm protecting the expanders from mechanical stress.

Noiseless condensate management

The evacuation is gravity-fed , with a continuous slope up to the authorized external discharge. This choice eliminates the maintenance and noise of a lifting pump. A siphon is provided if internal connection to prevent any return of odors.

What the Gree “R-32” brings to a Montreal home

Daily performance and comfort

The new generation Gree R-32 wall units modulate finely thanks to an inverter compressor. Result:

• long cycles at low speed, therefore silence and setpoint stability ;

• less mechanical wear and mid-season savings;

• precise blowing avoiding cold drafts in summer and the feeling of cold feet in winter.

R-32 offers better volumetric efficiency and a reduced GWP compared to R-410A: a relevant choice to reconcile performance and regulatory trajectory in Montreal, Laval, Longueuil, North Shore, South Shore .

Suitable BTU sizing

For a standard living room/office with double or triple glazing, we generally recommend 9,000 to 12,000 BTU . AirGreen sizing takes into account:

• orientation and solar gains ;

• the sealing of the envelope (recent doors/windows, weatherstripping);

• internal gains (IT equipment, occupants);

• thermal continuity with adjacent rooms.

A properly sized appliance avoids short cycles , reduces noise and improves moisture removal.

AirGreen HVAC Installation Methodology (Summary)

Preparation and safety

• Protection of passage areas, covers and cleanliness mats.

• Checking the electrical gauge , grounding and location of the external disconnection .

• Tracing of drillings avoiding studs, networks and delicate finishes.

Refrigeration lines and insulation

• UV insulated annealed tubes with respected bend radius; calibrated and lubricated flared ends.

• Torque tightened according to Gree instructions; nitrogen tested (up to 500 psi) to ensure tightness.

Vacuuming and charging

• High vacuum draw (< 500 microns stabilized), ascent control.

• Load check based on actual length and altitudes; superheat/subcooling reading.

Commissioning and adjustments

• Cooling and heating tests: blowing temperatures, air flow, noise at low/medium speeds.

• Scenario settings (sweeping, auto restart, optimized defrosting).

• Submission of a photo report and parameters to the client.

Results in the Villeray–Saint-Michel–Parc-Extension apartment

• Air conditioning : uniform fresh air without drafts, rapid reduction in humidity, increased comfort in the office area.

• Heating : in the off-season, the heat pump covers most of the needs; resistive heating remains a supplement during extreme cold.

• Acoustics : the internal head remains very discreet at reduced speed; the external unit is installed with regulatory clearances and silent blocks to cut vibrations.

• Aesthetics : aligned chute, no visible bleeding, preservation of moldings and wall finish.

HVAC Maintenance: The Key to Long-Lasting Performance

• Every 2–3 months in summer : rinse the filters and visually check the condensate drainage.

• In spring : gentle cleaning of the external exchanger, checking of the silent blocks and tightening of the screws.

• Annually : complete AirGreen maintenance (intensity measurement, insulation control, inspection of the dippers, parameter reading), with priority intervention during peak periods thanks to our HVAC maintenance contract .

Grants and administrative procedures

Depending on the performance criteria achieved by the wall-mounted heat pump and the use of the home, financial assistance may apply. Our team validates eligibility , prepares proof of installation (photos, serial numbers, parameters) and supports you to optimize the net cost of the project in Montreal, Laval, Longueuil, North Shore, South Shore .

Why AirGreen for your next project?

• Local expertise in Montreal buildings (plexes, condos, townhouses, flat roofs).

• Recent multi-brand selection : Gree , Sharp , Fujitsu , Midea in R-32 / R-454B to aim for the best efficiency within your budget.

• Transparent process : load calculation, clean HVAC installation , instrumented commissioning, then maintenance .

• Responsive after-sales service with priority parts and assistance.

Site sheet — key points

• Type : Gree wall-mounted heat pump ( R-32 range , Inverter).

• Location : Villeray–Saint-Michel–Parc-Extension (Montreal).

• Interior installation : high head under molding, indirect blowing.

• Route : back-to-back , ~ 2–3 m of isolated lines, clean outside chute.

• Condensates : gravity with controlled slope.

• Benefits : consistent comfort, low noise level, controlled consumption.

Are you hesitating between a wall-mounted air conditioner and a heat pump ? Our advisors will assess your space and propose a customized configuration, from BTU selection to commissioning . Contact AirGreen for a clear quote and long-lasting installation throughout Greater Montreal.