In several renovated condos and plexes in Ville-Marie , comfort depends not only on the outdoor unit: everything also happens in the indoor section , where the air is filtered, distributed, and heated in the depths of winter. On this project, our AirGreen team installed a Midea central system , with a ducted indoor module seamlessly integrated into the existing mechanical architecture.
The client's objective was clear: stabilize the temperature , reduce noise, improve air circulation and achieve reliable performance during the cold periods typical of Montreal — all while respecting the constraints of a narrow technical space (mechanical closet/utility corner) and an existing duct network.
Why a Midea central heat pump in the heart of Ville-Marie?
In this sector, we often find:
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housing units with existing ducts (metal plenums, main trunk, branches),
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very compact mechanical spaces,
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a higher requirement for acoustics (blowing noise, vibrations),
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an efficient heating system is needed to get through the winter without relying solely on expensive backups.
A central heat pump is particularly relevant when the dwelling is already configured for ducted distribution : it avoids multiplying wall units, a more uniform temperature is obtained, and the aesthetics remain completely intact in the rooms.
The installed system: Midea (central range) – EVOX G3
While every project is unique, choosing a model that's compatible with this type of configuration is often crucial. Here, we've selected a Midea EVOX G3 central unit, known for its "comfort + efficiency" approach in residential settings, with seamless integration into the ductwork.
Specifically, we are talking about a vertical indoor module (air management system) connected to:
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to the supply plenum (air distribution),
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at the air return (resumption),
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to the condensate drainage (drain),
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to isolated refrigerant lines ,
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to the power supply and control.
What the photo reveals about the installation (and what that implies)
The image shows a typical "Ville-Marie" configuration: a lot of equipment in a small space , with meticulous integration. Key details:
1) Integration into existing conduits
The Midea indoor unit is connected to an existing network of metal ducts , with a plenum above. In this context, our priority is to:
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Seal the joints (using suitable tapes/products) to limit losses.
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maintain a consistent static pressure (important for comfort and noise),
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check the distribution (flow rates per room) to avoid cold/hot zones.
2) Well-insulated refrigerant lines
Insulated lines (white insulation) are visible. Quality insulation is essential for:
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reduce condensation,
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limit heat loss,
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protect the pipes and improve durability.
3) Condensate management
In air conditioning mode (and sometimes in heating mode depending on conditions), the indoor unit produces water. In confined spaces, it is necessary to:
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a correct drain slope,
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protection against backflow,
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a clean finish that does not "bleed" onto surfaces.
4) Accessibility and maintenance
In a mechanical closet, the classic pitfall is accessibility: filter, service panel, drain, electrical components. At AirGreen, we plan from the installation stage to ensure future maintenance is simple :
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access to the filter without dismantling everything
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Minimum clearance for inspection
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clean routing of cables and conduits.
The constraints of the construction site (and how they are managed at AirGreen)
Narrow technical space
In an environment like this, the quality of the result depends on three things: alignment , fixings , and finish . Each element must be:
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securely fixed (vibration reduction),
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protected (insulation, sheaths, tapes),
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positioned to allow for maintenance.
Noise and vibrations
In a condo or semi-detached unit, acoustic comfort is crucial. A poorly installed central heat pump can transmit vibrations to the ductwork. Therefore, best practices should be followed:
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control of contact points,
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reduction of mechanical stresses on the connections,
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checking the operation of the fan (swing/flow).
Network tightness = comfort
Actual efficiency depends as much on the machine as on the distribution network . A leaking or poorly balanced network can give the impression that "the heat pump isn't heating," when in fact energy is being lost in mechanical cavities. Our approach: inspection, leak repair, and flow rate validation.
Desired result: stable comfort, summer and winter
With a well-integrated Midea central system:
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the air is more evenly distributed,
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Comfort is more consistent from one room to another.
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Air conditioning becomes more pleasant (fewer "hot spots").
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Winter performance is optimized thanks to a clean and airtight installation.
And above all: the client obtains a discreet solution, perfectly adapted to the reality of housing in Ville-Marie , where comfort is desired without sacrificing space or aesthetics.
Maintenance tips (to avoid preventable problems)
Even with a new installation, performance depends on maintenance. We recommend:
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Seasonal cleaning/inspection of the filter (frequency depending on dust/pets),
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Condensate drain check,
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Periodic inspection of the duct network (leaks, tapes, insulation),
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Complete professional maintenance to preserve performance, air quality and longevity.
A central system, especially in urban areas, is very useful: it's better to prevent than to correct a lack of flow or an obstruction in the middle of a heatwave.
Why entrust this type of installation to AirGreen?
Because a central heat pump isn't just about "plugging in a machine." It's a precision job:
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reading the building constraints,
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integration into the conduits,
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condensate management,
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noise reduction,
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future accessibility,
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clean finish.
At AirGreen , we install Midea central systems throughout Greater Montreal, and we adapt each project to the realities of housing: condo, duplex, single-family home, renovation, replacement, etc.
Conclusion
This Midea EVOX G3 central heat pump installation in Ville-Marie perfectly illustrates what we love to do: transform a complex technical space into a reliable, clean, and efficient system designed for the true comfort of the occupants. When the integration is done correctly—ductwork, insulation, drainage, access—the unit can perform at its best, summer and winter.