On this project carried out in the heart of Montreal's Old Port , our AirGreen team installed Sharp wall-mounted heat pumps on the exterior, with condensers positioned on the roof of a typical residential building in the area: flat gravel roofs, views of the city centre, heritage masonry buildings and characteristic urban density.
This configuration requires special expertise: respecting the building structure, managing vibrations on a flat roof, electrical compliance, safety at height and optimizing airflow around the units.
A Sharp wall-mounted heat pump installation – consistent model: Sharp ZU1
Based on the brand name provided manually ( Sharp ) and the appearance of the condensers visible in the photo, we identified a configuration perfectly compatible with the Sharp ZU1 R-32 range, a series known for:
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its high energy efficiency,
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its reliable performance in Quebec's climate,
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its discreet operation,
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Its compact design is ideal for flat roofs and confined spaces in urban environments.
These are clearly wall-mounted heat pumps (mini-split) with independent condensers, placed on raised supports to ensure optimal ventilation and avoid any direct contact with the gravel on the roof.
Building context: a flat roof typical of the Old Port
The image depicts an iconic environment:
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roofs of historic brick buildings,
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modern downtown structures in the background,
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private terraces, low parapets,
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High urban density but sufficient space for a professional installation.
This type of architecture requires a robust, secure and weatherproof installation, while ensuring adequate performance even during episodes of strong winds coming from the river.
Technical details of the rooftop installation
We opted for a raised configuration with anti-vibration metal supports . This choice is motivated by several needs:
1. Protection against gravel and runoff
The condensers are placed on metal rails, themselves raised by blocks designed to distribute the load without damaging the roof membrane.
2. Reduction of vibration transmission
In urban environments, especially in older buildings, minimizing structural resonance is crucial. Anti-vibration pads have been installed to ensure quiet operation.
3. Spacing between units
We observed several condensers side by side, including a Sharp ECO Inverter . We respected the manufacturer's recommended distances to ensure:
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adequate air circulation,
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effective defrosting in winter,
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simple and safe maintenance.
4. Management of refrigeration and electrical lines
The pipes are routed inside via a clean and watertight path, passing through a technical exit near the parapet.
The electrical boxes and protective devices are positioned on the adjacent metal structure to ensure easy access for maintenance.
5. Winter Resilience
Rooftop installations must support:
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snow, ice, strong winds,
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extreme temperature variations,
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frequent defrosting cycles.
The Sharp ZU1 series is designed to offer stable performance down to approximately −25 °C , ensuring efficient heating throughout the winter.
A Sharp solution ideal for the Old Port
For a residential building in the Old Port, a Sharp ZU1 wall-mounted heat pump offers several concrete advantages:
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Compact and efficient : perfect for limited rooftop spaces.
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Inverter technology : intelligent power modulation, reducing electricity consumption.
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Silent : a major advantage in an area where the proximity of housing requires discretion.
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Reliable : proven performance in both cooling in summer and heating in winter.
For the occupants, the result is four-season comfort , lower energy costs and an outdoor installation that does not encroach on the interior living space.
The AirGreen approach: precision, safety and respect for Montreal buildings
Installing a heat pump on a rooftop in the Old Port requires superior technical expertise. Our AirGreen team handles:
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Structural and logistical assessment to ensure the safety of the building and its occupants.
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Selecting the right Sharp model based on actual needs and the layout of the premises.
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Careful implementation : raised supports, vibration management, clean routing of pipes.
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Complete tests at the end of installation : vacuuming, pressures, consumption, defrosting, noise.
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Post-installation monitoring to ensure optimal performance throughout the year.
Each AirGreen installation aims to offer lasting comfort, intelligent aesthetics and optimal energy performance.
Are you looking for a Sharp installation in the Old Port or elsewhere in Montreal?
Whether you are in the Old Port , Ville-Marie, the Plateau, Rosemont, Verdun, Outremont, or elsewhere in Greater Montreal, we will expertly and transparently assist you in selecting and installing the Sharp heat pump best suited to your home or condo.
Request a free quote to discover how we can improve your comfort while reducing your energy costs.