An exemplary installation above a garage: performance, cleanliness and service access
At AirGreen , we design each HVAC installation as a coherent whole where mechanics, architecture and daily use align. In this project carried out in Chomedey (Laval) , our team installed a Gree wall-mounted heat pump – Livo R32 range . The outdoor condenser , fixed above the garage door on sturdy wall brackets , perfectly illustrates our approach: securing the equipment against snow and splashes, optimizing air circulation and facilitating maintenance, while respecting the aesthetics of the brick facade.
Residential context and client objectives
The townhouse has a paved driveway leading to a double garage . The owners wanted:
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efficient cooling for the upper floor exposed to the sun;
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additional heating modulating electricity consumption in the off-season and in moderately cold weather;
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an outdoor location that does not interfere with parking or daily traffic;
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a clean installation with durable equipment and clear access for service.
Why the Gree Livo R32 range for Chomedey
The Gree Livo R32 belongs to the new generation of wall-mounted heat pumps :
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R-32 refrigerant with lower GWP than R-410A;
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inverter technology for fine modulation of power, better thermal stability and lower consumption ;
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controlled acoustics on the condenser and evaporator side;
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characteristics favorable to eligibility for current financial aid programs , depending on the chosen capacity and current requirements.
For a residential area of Laval , where the facades are close together and the garage entrances are heavily used, the Livo R32 stands out for its compact size , its silence and its reliability in cold climates .
Condenser installation: raise, clear, preserve
We chose to install it on galvanized brackets above the garage lintel. This configuration provides several concrete advantages:
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Winter protection : the unit remains out of the snowpack and protected from road salt deposits.
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Service access : the equipment is accessible by ladder without obstructing the garage opening.
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Safety and traffic : nothing on the ground, no obstacles for cars, bicycles or garbage cans.
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Airflow : Rear and side clearance in accordance with the manufacturer's recommendations for optimal airflow .
The base of the support receives anti-vibration pads , limiting transmission to the masonry. The discharge plane is slightly inclined to promote the flow of water from defrosting cycles.
Drilling, refrigeration lines and finishing
The refrigeration path is short and straight, with a clean hole in the brick and then the garage wall. We implement:
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freeze/thaw compatible outer sleeve and sealant;
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high density insulation on the lines, UV-resistant rigid cover up to the entrance;
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drip loop to prevent any water infiltration;
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stainless steel anchors for a long-lasting hold.
A reduced path (typically 3 to 6 m depending on the position of the interior head) reduces pressure losses and improves the seasonal efficiency of the wall-mounted heat pump .
Electrical connection and compliance
In the immediate vicinity of the condenser, we install the code-required proximity switch , visible on the facade. The wiring is mechanically protected over the entire exposed section. The rating and protection at the panel are sized according to the Gree nameplate and the actual circuit length. All ground connections and crimps are verified by measurement and traction.
Condensate management on the interior side
The interior wall head drains condensate by gravity with a continuous slope towards the outside, the most reliable and quiet solution. The passage through the temperate volume of the garage limits the risk of freezing ; if necessary, we insulate the exposed section. This approach eliminates the use of a sump pump, reduces maintenance and eliminates a potential source of noise.
AirGreen Commissioning Methodology
Our standard procedures guarantee performance from the first start:
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Torque-controlled flares with calibrated edges.
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High pressure nitrogen test to validate the tightness of the entire circuit.
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Deep vacuum (≤ 500 microns) with stabilization and vacuum resistance test.
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Opening the valves and adjusting the load if necessary depending on the length.
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Functional checks : intensity, overheating/subcooling, supply/return temperatures, inverter modulation.
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User configuration : flow rates, shutter orientation, night mode, simple locks.
Noise, neighborhood and vibrations
The Gree Livo R32 's raised installation and low-frequency modulation limit the noise level felt on the driveway and inside the garage. The silent blocks on the support and the respect of the clearances prevent air recirculation, a common source of whistling and loss of efficiency.
Aesthetics and durability of the brick facade
On a red brick facade, visual harmony counts. We:
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align the bracket to the brick beds for a clean reading;
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seal each anchor in the sound masonry ;
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let's take care of the waterproofing to avoid infiltration into the garage;
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provide, where relevant, anti-corrosion protection on cuts and fixings.
These choices guarantee a discreet and lasting ensemble.
Usage gains: comfort and savings
The wall-mounted heat pump ensures rapid cooling of rooms overlooking the driveway and very stable additional heating . Thanks to the inverter , the machine works for a long time at low power , which:
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reduces consumption ;
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limits on/off cycles;
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increases the life of components;
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maintains comfortable humidity in summer.
Grants and administrative support
The combination of R-32 , inverter and good seasonal performance makes the Gree Livo R32 eligible for financial assistance programs when the criteria are met. Our team supports owners in Montreal, Laval, Longueuil, North Shore and South Shore to validate eligibility (BTU capacity, operating temperatures, efficiencies), gather parts and maximize assistance .
HVAC Maintenance: Maintaining Performance
Regular maintenance extends performance and reliability:
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bi-monthly cleaning of the interior head filters during peak season;
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gentle rinsing of the external battery in spring;
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annual AirGreen inspection : pressures, intensities, defrosting, electrical tightening, condition of covers and support;
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permanent clearance of at least 60 cm in front of and on the sides of the condenser (snow, bins, ladders).
Pitfalls to avoid (feedback)
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Condenser too low : exposure to snow, increased noise and risk of corrosion.
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Lines without hood : UV, shocks and frost bites weaken the insulation.
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Drilling without sleeve : possible infiltration towards the garage.
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Insufficient clearances : air recirculation, frost and reduced efficiency.
Our raised layout, short travel and hooded finish meet these challenges precisely.
Result: a clean, accessible and efficient installation
The Gree – Livo R32 condenser, installed above the garage on brackets , remains protected from shocks and snow , while providing quick service access . The owners benefit from four-season comfort , controlled consumption and a neat facade. It is a typical AirGreen achievement: efficient , discreet and sustainable for the daily lives of Chomedey families.
Why choose AirGreen for your wall-mounted heat pump in Laval and Greater Montreal?
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Mastery of local buildings : integrated garages, brick facades, narrow streets.
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Recent equipment (R-32 / R-454B) , quiet and efficient in cold climates.
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Rigorous commissioning procedures and clear guarantees .
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Grant support for Montreal, Laval, Longueuil, North Shore, South Shore .
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HVAC maintenance service that maintains long-term performance.