Installation of a Zephyr wall-mounted heat pump on a condo balcony in Ville-Marie (Montreal)
In Ville-Marie, AirGreen installed a Zephyr wall-mounted heat pump on a condo balcony, with a raised support and seamless integration. A compact and efficient solution for optimal comfort year-round in a dense urban environment.
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The job on one screen
The article, chapter by chapter
In condominium buildings in the Ville-Marie district, the installation of an HVAC system must meet several specific constraints: limited outdoor space, condominium requirements, noise reduction, safety, and visual integration. For this project, we completed the full installation of a Zephyr wall-mounted heat pump on a concrete balcony , a very common configuration in downtown Montreal.
Urban setting: year-round comfort without compromise
The photo perfectly illustrates a high-rise urban condo environment: a balcony with a metal railing, a concrete structure, closely spaced neighboring buildings, and direct visibility into other residential units. In this type of context, every technical decision counts.
The client's objective was clear:
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to benefit from effective cooling in summer ,
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to obtain reliable supplemental heating during the cold seasons,
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to respect the rules of the condominium,
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to maintain a functional and safe balcony.
The chosen solution: a Zephyr wall-mounted heat pump , with an outdoor unit installed on a dedicated raised support .
Machine type: wall-mounted heat pump (mini-split)
This is a residential wall-mounted heat pump , also called a mini-split , consisting of:
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an indoor wall unit (not visible in the photo),
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a compact Zephyr outdoor unit , installed on the balcony.
This type of system is particularly well-suited to capacitors because it:
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requires no network of conduits ,
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offers precise temperature control ,
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operates silently and modulatingly ,
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allows for flexible installation, even in confined spaces.
Brand: Zephyr (main project reference)
The installed brand is Zephyr , used as the primary reference for the entire project. Zephyr wall-mounted heat pumps are often chosen in urban environments for their compact size , reliability , and ability to deliver good energy efficiency when properly sized and installed.
Model: Zephyr wall-mounted heat pump – recent generation
The exact model number is not legible in the photo. We therefore present this installation as a recent generation Zephyr wall-mounted heat pump , selected in a capacity suitable for a condo (generally between 9,000 and 18,000 BTU depending on the area, orientation and insulation).
At AirGreen, we always prioritize precise sizing , because a good choice of capacity is just as important as the brand itself.
Prominent installation details visible in the photo
1) Installation on an elevated metal support
The outdoor unit is installed on an aluminum/galvanized steel bracket , placed directly on the concrete slab of the balcony. This choice offers several advantages:
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protection against water, snow and ice,
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reduction of vibrations transmitted to the structure,
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improved equipment longevity,
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ease of maintenance and inspection.
2) Compliance with clearances and ventilation
Despite the limited space on the balcony, the Zephyr unit is positioned to ensure:
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adequate air circulation ,
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a safe clearance from the guardrail,
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stable performance, even during periods of high demand.
3) Clean and discreet connection transitions
Note the well-positioned wall outlet for the refrigerant and electrical lines , minimizing the visual impact both inside and out. In a condominium, this type of finish is essential to meet aesthetic standards and property management requirements.
4) Installation designed for noise in dense environments
In the city centre, noise is a real issue. Positioning, supports and fixing points are chosen to minimize vibrations and noise levels , both for the customer and for immediate neighbours.
Why a Zephyr wall-mounted heat pump is ideal for a condo in Ville-Marie
In a densely populated area like Ville-Marie, a wall-mounted heat pump offers several key advantages:
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quick and even comfort
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efficient operation during summer heatwaves,
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A welcome supplementary heating source during autumn, spring, and a good part of winter.
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Energy consumption is better controlled than with electric baseboard heaters alone.
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compact solution that respects the constraints of co-ownership.
The AirGreen approach for condo installations
Every condominium project requires a rigorous approach. For this type of installation, we pay particular attention to:
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compliance with condo regulations ,
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the mechanical stability of the outdoor unit,
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noise and vibration management,
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the visual cleanliness of the final result,
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durability in Montreal winter conditions.
The result is a discreet, reliable system that is perfectly integrated into the urban environment.
The end result: comfort, discretion, and peace of mind
This Zephyr wall-mounted heat pump installation in Ville-Marie demonstrates that it is entirely possible to significantly improve the comfort of a condo, even with a small balcony. Thanks to proper planning and careful installation, the client now benefits from a high-performance, quiet, and durable system.
At AirGreen, we adapt each installation to the realities of the building and the neighborhood, to offer a truly tailor-made solution.
The job tools
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
How the job unfolds
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
What we check on a job like this one
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
The right pages, at the right time
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).