Installation of a Gree wall-mounted heat pump in an indoor parking lot in Griffintown (Le Sud-Ouest)

A discreet, protected and efficient AirGreen solution for a condominium building

In a residential building in Griffintown , we installed a Gree wall-mounted heat pump (R-32 generation) with the outdoor unit suspended from the parking ceiling . This configuration meets the specific constraints of downtown condominiums: lack of backyard space, aesthetic requirements for facades, and risks related to snow, vandalism, and snow removal. The result: a robust, quiet, and easy-to-maintain HVAC system , perfectly suited to urban living.

Why install the outdoor unit in the parking lot?

In Greater Montreal, many condominium associations require that condensers be located outside walkways and facades . Indoor parking then becomes the preferred location when ventilation and clearances are compliant. This approach offers several advantages:

• Protection against bad weather (snow, ice, road salt, wind-borne debris).

• Reduction of noise pollution perceived on the facade thanks to the concrete structure and anti-vibration supports .

• Increased security against shocks and vandalism.

• Easy access for maintenance and annual inspection.

Installed equipment: Gree, R-32, performance and energy efficiency

The new-generation Gree range with R-32 refrigerant combines high seasonal efficiency with a low environmental footprint. Paired with a wall-mounted indoor unit in the condo, this heat pump provides year-round heating and cooling , with stable operation during Montreal's prolonged cold spells . The inverter motor precisely adjusts power to maintain comfort while limiting consumption.

Model: The unit belongs to the Gree R-32 wall-mounted family (recent series). When the exact model number is required for warranty or grant applications, we document it in the AirGreen customer file with photos of the plates and serial numbers.

A technical achievement designed for longevity

We opted for a concrete ceiling suspension using threaded rods and a profile frame, equipped with dimensioned anti-vibration pads . This structure:

• Mechanically separates the unit to limit the transmission of vibrations to the slabs.

• Maintains adequate peripheral clearances for air intake and discharge.

• Place the condenser above car hoods , away from shocks and splashes.

On the connection side, we have achieved:

• A clean route for refrigerant connections along the ceiling, insulated with Armaflex and protected in a metal conduit where the environment requires it.

• A dedicated power supply with accessible service switch and flexible conduit approved for parking environments.

• A retention/defrosting pan with discharge to the floor drain to collect water from winter defrost cycles; a gravity slope and, if necessary, a controlled heating cable protect against freezing.

• A nitrogen leak test , deep vacuum and careful control of superheating/subcooling before commissioning.

Special features of a downtown condominium installation

Working in co-ownership requires close coordination :

• Approval by the union and compliance with building regulations (size, location, maximum noise level, aesthetics).

• Planned intervention windows to avoid blocking vehicle access; our teams respond quickly and leave the site spotless.

• Temporary signage and fall protection during drilling/ceiling.

• Fire compliance : passage of connections in fire-resistant openings filled and sealed with certified products, labeling of circuits.

Performance, comfort and silence every day

After commissioning, the Gree wall-mounted heat pump delivers:

• Comfortable heating from mid-season and efficient additional heating in the middle of winter, limiting the use of electric baseboards.

• Uniform air conditioning in summer , with appreciable dehumidification during humid periods.

• A contained noise level thanks to dual treatment: inverter technology + anti-vibration suspension .

To optimize comfort, we recommended:

• Precise positioning of the interior head in the living area to avoid direct air currents.

• Programming temperatures and regular cleaning of filters .

• AirGreen Annual HVAC Maintenance : Pressure check, amperage measurement, fastener inspection, defrost drain check and coil cleaning .

Grants and Eligibility

High-efficiency R-32 wall-mounted heat pumps are generally eligible for assistance depending on their power , certification (e.g., Energy Star Cold Climate ), and installation location . We support our customers in Montreal, Laval, Longueuil, the North Shore, and the South Shore for:

• Check the eligibility of models and powers.

• Provide supporting documents (detailed invoices, installation photos, serial numbers).

• Submit the complete file within the required deadlines.

Good practices and pitfalls to avoid in indoor parking

• Always provide a dedicated drain for defrost water (floor drain or trench) to prevent ice formation .

• Strictly respect the clearances around the condenser and the direction of the air flow so as not to disturb the detectors or fire shutters.

• Correctly size the anti-vibration mounts : a suspension that is too rigid or too flexible can amplify structural noise.

• Label the circuit breaker and service switch; ensure grounding and overcurrent protection.

• Periodic inspections : tightening of nuts on threaded rods, checking for corrosion and condition of sheaths.

Typical timeframe and schedule for an AirGreen project in an urban environment

1. Technical visit : taking measurements in the condo and parking lot, validating passageways.

2. Detailed quote : choice of BTU power based on volumes and insulation, options (smart thermostat, heating cables, retention tank).

3. Union approval : layout sketches provided as required.

4. Installation : A typical day for a single-zone wall unit ; coordination with property management for access and signage.

5. Commissioning & training : explanation of maintenance, correct settings and warranty points.

6. Grant file : administrative support until the aid is received.

AirGreen, your HVAC ally in downtown Montreal

Our team operates throughout Montreal , as well as in Laval, Longueuil, the North Shore, and the South Shore . We understand the constraints of dense neighborhoods like Griffintown , Le Sud-Ouest , and Ville-Marie —whether it's installing Gree wall-mounted heat pumps , multi-zone systems, or central solutions for larger units. Each project is documented , tested , and guaranteed to provide lasting comfort and real savings .