Intelligent comfort and controlled efficiency: a Zephyr wall head installed with care in a bright living room in Chomedey
The customer context and the performance objective
At AirGreen , we were called upon to modernize the comfort of a home in Chomedey (Laval) . Our client wanted a solution that was both discreet and efficient, capable of heating efficiently in the mid-seasons and cooling quickly in the summer, without noise or heavy work. We recommended a Zephyr wall-mounted heat pump – a reliable choice for residential use, particularly suitable for medium-sized living rooms.
The layout features a corner wall adjacent to a floor-to-ceiling window . Our main challenge: optimizing air diffusion in an L-shaped space, while maintaining a short refrigeration path to maximize seasonal efficiency.
Why a Zephyr wall-mounted heat pump here?
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4-season efficiency and comfort : the wall-mounted head provides precise cooling in summer and responsive heating support in autumn, with fine temperature control (digital display at 16°C visible in the center of the unit).
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Silence and discretion : sleek casing, adjustable shutter and low noise levels, ideal for a living room.
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Fast HVAC installation : a single drilling, a dedicated power supply and a controlled refrigerant path allow for a clean site, without demolition.
Keywords: wall-mounted heat pump , HVAC installation , heating , air conditioning , Laval , Greater Montreal .
Our step-by-step installation method
1) Taking measurements and choosing the location
We validate an installation at ~2.2 m from the ground , centered on the wall section, with sufficient clearance above and laterally to guarantee good air intake and simplify maintenance. The proximity of the window requires particular attention to the orientation of the shutter in order to avoid direct drafts on the seating area.
AirGreen Best Practices:
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Clearance above wall head (typically ≥ 10–15 cm).
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Avoid direct alignment of the flow on curtains or blinds.
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Position your head so that the air is blown towards the center of the room, never against a nearby obstacle.
2) Support and drilling
After installing the wall plate on solid reinforcements, we make a through-hole with a slight gravity slope to drain the condensate to the outside. This approach eliminates the need for a condensate pump in most cases and reduces maintenance.
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Wall crossing protected by exterior capping (color to match the facade when required).
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Refrigeration connection and communication cable routed neatly in the sheath.
3) Refrigeration connections, electricity and sealing
Our teams form and flare the copper tubes with precision, then carry out:
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Nitrogen leak test (pressurization);
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Deep vacuum ( ≈ 500 microns ) to ensure a dry and clean circuit;
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Check the polarity and rating of the dedicated circuit breaker , according to the manufacturer's instructions.
This sequence protects the compressor and ensures the longevity of the system.
4) Commissioning and comfort balancing
We validate the blown temperature , the room/blowing temperature difference , and calibrate the orientation of the shutters to avoid areas of air stagnation. The remote control is set to Heat/Cool/Auto mode according to the household's habits, with a recommendation for adequate setpoints and flow rates .
Results obtained in the living room
Even diffusion and rapid response
Placed at an angle near the bay, the Zephyr head blows parallel to the long wall, which promotes a Coandă effect (the air follows the ceiling before falling) and standardizes comfort. The set point dropped to 16 °C during the test demonstrates the cooling capacity ; in heating, the unit delivers a gentle and stable heat without jolts.
Aesthetics and acoustic discretion
The white casing blends in with the light paintwork. The shutters and lower skirt remain discreet when closed. Interior noise levels are contained, allowing for unobstructed conversation and TV viewing.
What you need to know before choosing your wall-mounted heat pump in Laval
Sizing (BTU): the heart of performance
Good sizing avoids short cycles and overloads :
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9,000–12,000 BTU : bedrooms, offices, small living rooms.
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18,000–24,000 BTU : Larger open areas.
We analyze insulation , orientation , solar gains and actual use . In this Chomedey installation, the L-shaped geometry and the generous window require attention to air stratification and flow distribution .
Seasonal and refrigerant yields
Recent wall-mounted ranges rely on lower GWP refrigerants and inverter compressors for better SEER/HSFP . The concrete benefit for the customer: reduced electricity consumption and 4-season temperature stability .
HVAC Maintenance: The Key to Sustainability
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Cleaning the filters (once a month in summer, once every 2 months in winter).
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Annual inspection : connections, condensate drain , tightening, condition of flares and temperature /pressure measurement.
Regular maintenance maintains performance , limits odors and prevents leaks .
Construction site challenges and AirGreen solutions
1) Corner wall near a window
Challenge: risks of drafts and stratification .
Solution: fine adjustment of the horizontal shutter and adjustment of the ventilation speeds to divert the flow from the seating area and project it towards the heart of the room.
2) Condensate management without pump
Challenge: preserve aesthetics and avoid the maintenance of an additional device.
Solution: controlled gravity slope in the drilling, careful sealing of the wall pass-through, clean exterior capping.
3) Optimal refrigeration path
Challenge: Limit length and elbows to maintain efficiency .
Solution: wall-to-wall drilling close to the head, precise bending and isolated accessories to avoid losses and vibrations .
Instructions for use for millimeter-perfect comfort
Recommended settings
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Auto mode in spring/fall to intelligently switch between heating and cooling .
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Instructions : 22–23°C in summer (economy/pleasure), 20–21°C in winter for mild comfort.
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Fins slightly upwards for cooling (air draft along the ceiling), horizontal for heating to promote convection .
Money-saving tips
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Keep interior doors ajar to balance the temperature.
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Clean the filters and clear the air intake (shelves/curtains).
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Combine the heat pump with well-managed window coverings (summer solar gain, winter heat retention).
Why AirGreen for your project in Montreal, Laval, North Shore and South Shore?
Local expertise and comprehensive support
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Home assessment : correct sizing, installation advice.
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Careful HVAC installation : testing, high vacuum , calibration and training in use.
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After-sales service : preventive and corrective maintenance, original parts.
Grants and Eligibility
Several programs (provincial/federal) encourage the adoption of energy-efficient heat pumps in Greater Montreal . We verify your eligibility and prepare the file (detailed invoices, technical photos, serial numbers) to maximize your reimbursement when applicable.
Frequently Asked Questions (selection)
Is the wall head enough for the whole house?
In a cottage or a plex , we first target the living room . For uniform comfort upstairs and in the basement, we can supplement with other interior heads ( MultiZone solution) or a mixed strategy.
How long does it take to install in Laval?
After technical validation, one day is generally sufficient for a wall unit with a short route, including testing and commissioning.
What if the exterior facade is visible from the street?
We harmonize the capping , support and management of drains in order to preserve aesthetics . Our teams respect local regulations and the manufacturer 's recommendations.
Conclusion: a transformed living space, ready for the four seasons
This Zephyr wall-mounted heat pump installation in Chomedey illustrates our requirements: stable comfort , silence , clean installation and performance preserved by a short cooling path. For your heat pump project in Montreal , Laval , on the North Shore or the South Shore , the AirGreen team will support you from the study to the maintenance , with the same attention to detail.