In this Rosemont–La Petite-Patrie apartment, comfort was adequate in the summer, but very inconsistent the rest of the year: an overheated home office in the afternoon, cooler rooms in the morning, and a noisy old window air conditioner that interfered with Teams calls. Our client wanted to switch to a quiet, year-round efficient solution that blended seamlessly into the decor.
We recommended and installed aSharp wall-mounted heat pump , a recent residential model operating on R-32 refrigerant, with a capacity of approximately 12,000 BTU – ideal for an open-plan office-living room like those often found in Rosemont.
Project context
The project takes place in a typical apartment/office in the area:
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light-colored walls, standard ceiling height;
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workspace set up on a wall with calendar, documents and storage;
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proximity to a window with a horizontal blind, which creates significant heat gains in the afternoon;
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door nearby, which imposes clearance constraints for the wall unit.
The client's objective was twofold:
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Cool efficiently in summer without noise or unpleasant drafts in front of the office.
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To ensure efficient supplemental heating in winter , especially during periods of extreme cold in Montreal, in order to relieve the electric baseboard heaters and reduce energy costs.
Choosing a Sharp wall-mounted heat pump
We directed the project towards a new generation Sharp wall-mounted heat pump , equivalent to the Sharp ZU1 series:
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Inverter technology to continuously adapt the power to the actual need.
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R-32 refrigerant, more efficient and with a lower environmental impact than R-410A.
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Efficient heating mode even at very low outside temperatures, perfectly suited to Montreal winters.
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Very low noise level, ideal for a home office or a room where online meetings are held.
Sharp is a brand we appreciate for:
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the reliability of its components ;
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temperature stability , without large variations between cycles;
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comfort functions (Silent mode, automatic restart, intelligent defrosting).
Interior installation details
The indoor unit was installed high on the wall , just above the door, with optimal clearance to the central area. This positioning offers several advantages:
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Uniform air distribution : the main airflow spreads over the desk and seating area, preventing a cold draft from directly hitting the seated person.
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Space saving : no furniture had to be moved; the wall remains free for calendars, charts and work documents.
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Clean aesthetics : the Sharp unit, with its understated design, blends naturally into the room; the covers and channels are painted and aligned to remain discreet.
From a technical standpoint, we have:
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installed a perfectly leveled mounting bracket to ensure proper drainage of condensate;
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a controlled slope was planned for the drain , avoiding any risk of backflow or dripping onto the wall;
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optimized the passage of refrigerant lines (copper, communication, power supply) to minimize penetrations and preserve the insulation of the exterior wall;
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checked the tightness of all fittings with pressure test and prolonged vacuum before opening the refrigerant valves.
Details of the outdoor installation (overview)
Even though the photo provided only shows the indoor unit, installing a Sharp wall-mounted heat pump in Rosemont always involves careful work on the exterior:
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positioning of the compressor on anti-vibration supports or concrete base, above the snow level;
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use of external cable trays to protect copper pipes, cables and condensation drain;
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management of regulatory clearances in relation to windows, air inlets and property lines;
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fan orientation to limit noise towards neighbors and optimize air intake.
We pay particular attention to winter protection : sufficient clearance for snow accumulation, good drainage of defrost water and simplified access for maintenance.
Comfort and performance in all seasons
Thanks to this Sharp wall-mounted heat pump:
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In summer , the room stays cool, even during heat waves. The dehumidification function improves comfort, which is especially appreciated in a workspace.
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During the off-season , the heating mode allows you to maintain a stable temperature without having to start the entire heating system of the home.
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In winter , the heat pump takes over a large part of the heating needs down to very low temperatures, thus reducing the use of more expensive electric baseboard heaters.
The customer benefits from better control of their energy consumption while gaining in acoustic comfort: gone is the noise of the old window air conditioner, replaced by the discreet murmur of the Sharp fan.
Benefits for the Rosemont–La Petite-Patrie customer
After commissioning and initial adjustments, the main gains observed are:
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Consistent thermal comfort in the work and living area.
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Quiet operation , crucial for calls and virtual meetings.
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Reduced electricity bills , thanks to the high efficiency of the Sharp heat pump.
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Adding a high-performance heat pump increases the value of the property , as it is highly sought after in the Montreal market.
We took the time to show the client:
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how to use the operating modes (Auto, Heating, Air Conditioning, Dehumidification);
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how to program schedules to adapt the temperature to working periods;
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How to clean the pre-filter and recognize the main display codes.
Why entrust your Sharp heat pump project to AirGreen?
At AirGreen, we regularly install Sharp wall-mounted heat pumps in apartments, condos, and houses throughout Greater Montreal. Our approach:
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Detailed analysis of needs (surface area, orientation, use of rooms).
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Selecting the right model (BTU capacity, noise level, heating performance).
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Careful installation respecting electrical standards, safety and HVAC best practices.
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After-sales service available for annual maintenance, warranty and support at all times.
Whether you are in Rosemont–La Petite-Patrie, Plateau, Villeray, Laval or on the South Shore, we offer complete solutions for your Sharp wall-mounted heat pump projects and other heating/air conditioning systems.
If you wish to replace a window air conditioner, improve your electric heating or simply make your home office more comfortable, our team will be happy to assist you from choosing the unit to the first start-up.