A narrow entrance, busy passageways all day long and the need for constant comfort: in this house in Chomedey (Laval) , we integrated a Gree Pular R32 wall-mounted heat pump to efficiently cool in the summer and provide precise additional heat in the spring and fall—without encroaching on space or the family routine.
Careful integration into a lively entrance hall
The hall leads to the ground floor and the exterior access. Coats, bags, and accessories occupy the walls; the door opens often. Our challenge: position the interior head above the door , at the optimal height, to free up the passage, avoid shocks, and maintain uniform air distribution to the corridor and adjacent rooms. The choice of a compact unit, with a rounded and silent casing, is essential to preserve the serenity of the premises.
Customer expectations
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Immediate freshness when returning home in hot weather.
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Gentle heating support in the morning and evening to limit use of the main system.
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Silence and sobriety : the equipment must neither obstruct traffic nor produce noise pollution.
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Simple and quick HVAC maintenance , without complex disassembly.
Why the Gree Pular R32 for this project?
The Gree Pular R32 is one of the new generations of wall-mounted heat pumps that run on R-32 , a more efficient refrigerant, which allows for better specific capacity and high seasonal efficiencies . In this configuration, we size a 12,000 BTU unit (based on the calculated load), perfect for an open ground floor with a central hall.
Advantages of the Pular R32:
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Wide modulation inverter : avoids short cycles, maintains comfortable humidity, reduces consumption.
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Low noise level : installation in a hall requires discreet operation, especially at night.
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Accessible filters and easy-to-open front panel for home maintenance.
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Mid-season extreme cold compatibility and Energy Star performance on several capacities, facilitating access to assistance programs when applicable in Greater Montreal , Laval , Longueuil , North Shore and South Shore (verified on a case-by-case basis).
Steps to a controlled HVAC installation
Study and tracing
First of all, we perform a load calculation and a wall survey. The position above the door offers:
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a jet of air that runs along the ceiling then diffuses towards the living room and the kitchen;
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a very short distance to the exterior wall (1.5 to 3 m), which limits pressure losses and optimizes the responsiveness of the system;
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mechanical protection against shoulder or object impacts, which are common in a hall.
Drilling and refrigeration route
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Through-hole sloping outwards for gravity drainage of condensate (no pump required here).
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Discreet white capping in the upper corner: it protects the insulation and refrigeration connections against UV rays and guarantees a clean finish.
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Bending radius respected at the start of the head and when passing through the wall: the brazing and fittings remain reliable in the long term.
Condensate management
In a hall, any leak would be immediately embarrassing. We provide:
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a constant slope and an anti-odor siphon ;
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a protected exterior exit , away from paths, avoiding marks on the facade;
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a flow test with clear water before closing the hoods.
Electricity and safety
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Dedicated circuit from the electrical panel, rating and circuit breaker suitable for the Gree Pular R32 nameplate.
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External disconnection installed near the condenser for safe interventions.
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Torque tightening , grounding continuity and systematic insulation checks.
Vacuuming and start-up
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Nitrogen test with detection solution on all junctions.
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Deep vacuum (< 500 microns) then rise test to eliminate humidity and non-condensables.
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Supervised start-up : measurement of intensity, supply/return temperatures, superheating and subcooling .
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Comfort settings : orientation of the shutters to avoid direct airflow on people entering through the door, memorization of the favorite setting and self-modulating mode.
Technical points and constructive choices that make the difference
External and acoustic support
The outdoor unit, installed on a sheltered side façade, rests on anti-vibration supports and complies with the required clearances . The orientation limits air recirculation in winter (defrosting phase) and keeps noise away from bedroom windows. In urban areas like Laval center, these details guarantee peaceful coexistence with the neighborhood.
Reduced length, increased efficiency
With a short refrigeration run , the factory charge is often sufficient; this avoids overloads and preserves the COP/SEER . The lower pressure losses also allow for a faster increase in comfort when returning home.
Safety of use in a hall
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High installation : no conflict with coat hooks, ladders or strollers.
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Rounded body of the Pular: reduces the risk of snagging when passing.
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Locking hoods and cables secured: no protruding parts flush with the doorframe.
Result: measurable comfort on a daily basis
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Consistent freshness in summer, without aggressive drafts when the door is opened.
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Mid-season heat that significantly reduces the operating hours of the main system.
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Quiet : the indoor fan operates at very low speed most of the time; the anti-vibration outdoor unit remains discreet on the facade.
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Simplified HVAC maintenance : accessible washable filters and quick annual check of the refrigeration circuit.
Usage tips to maximize performance and savings
Recommended settings
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Stable setpoint (e.g. 23°C in summer / 21°C in the off-season): the inverter modulates better and consumes less.
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Use Dry mode during very humid periods: increased sensation of freshness without overcooling.
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Program an auto speed during the day and a minimum speed at night to keep the hall quiet.
Preventive maintenance
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Clean filters every 4 to 8 weeks depending on usage.
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Annual inspection : gentle washing of the condenser, checking of tightening, verification of external insulation and condensate flow.
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Hygiene : light disinfection of the condensate tray and odor control at the air intake.
Mistakes to avoid
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Block the recovery with coats or objects hanging too high: leave free space around the head.
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Break the slope of the condensates by adding decoration or a shelf: maintain the gravity slope.
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Undersize the unit: A 9,000 BTU in an open ground floor would saturate. We always size by calculation.
Deadlines and coordination
This type of HVAC installation is completed in one day :
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Morning: protection of areas, drilling, installation of the plate, refrigeration/electrical routing.
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Afternoon: brazing, leak testing, vacuum , start-up, adjustments, customer training.
Since the intervention area (hall) is strategic, we plan access to reduce interruptions to family comings and goings.
Grants and administrative support
Many R-32 wall-mounted heat pumps meet the Energy Star and cold weather performance criteria required by certain programs. Eligibility depends on the exact model and home conditions. We verify each file for Laval , Montreal , Longueuil , the North Shore and the South Shore , and provide the necessary supporting documents (technical data sheet, proof of installation, serial numbers).
Why AirGreen for your project in Laval and Greater Montreal?
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Specialists in constrained spaces : entrances, corridors, mezzanines, staircases—demanding layouts that we make comfortable and durable.
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Exemplary finishes : clean capping , UV-protected insulation, accessible disconnection , waterproof seals.
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Serious after-sales service : HVAC maintenance contracts to maintain seasonal performance and extend lifespan.
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Objective advice : BTU and range selection based on load calculation, no costly oversizing.
Summary sheet — Installation in Chomedey (Laval)
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Type : Gree Pular R32 wall-mounted heat pump , capacity 12,000 BTU (depending on load).
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Interior layout : head above the entrance door, diffusion towards main circulation.
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Route : short connections (≈ 1.5–3 m) to side facade; gravity condensates .
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Electrical : Dedicated circuit, disconnect box near condenser, grounding verified.
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Benefits : four-season comfort, silence in transit areas, easy maintenance and savings in the off-season.
Are you planning a similar HVAC installation in Laval , Montreal , Longueuil , on the North Shore or on the South Shore ? We will come for a technical visit, validate the capacity, the layout and the eligibility for aid, then carry out a clean and durable installation adapted to your home.