Discreet, efficient and well-designed four-season comfort in a Montreal condo
Result: stable comfort, minimal noise and energy savings all year round
Context and objectives of the project
At AirGreen , we are working today in an apartment in Rosemont–La Petite-Patrie to modernize the thermal comfort with a Sharp wall-mounted heat pump from the ZU1 range ( R-32 refrigerant ). The objective: to efficiently air-condition the living area in summer, provide efficient heating support at low temperatures in winter, reduce the energy bill and maintain an almost imperceptible noise level.
Why the Sharp ZU1 range for this type of home
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Low GWP R-32 technology : better seasonal efficiency and reduced refrigerant charge compared to R-410A.
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Cold weather performance (optimized heating mode): ideal for Greater Montreal .
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Quiet operation : wall-mounted indoor unit with very low noise level, perfect for living rooms or home offices.
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Simple control : IR wall remote control with Auto, Dehumidification, Heating and Fan modes.
Sizing: For an average sized open area, the range is available from 12,000 to 18,000 BTU . We always size based on a load calculation (orientation, insulation, air infiltration), in order to avoid over/undersizing.
Interior head location: optimized airflow
We position the head in the upper part , above the passage leading to the adjacent room. This location:
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Frees up the circulation area and promotes longitudinal airflow towards the living area.
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Avoids direct blowing onto seated occupants.
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Provides easy access for HVAC maintenance (filters, fins, condensate tray).
Refrigeration and finishing
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Single hole on the right side of the unit for the exit of the refrigerant lines and the condensate drain .
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White capping matching the wall for discreet and clean integration of the harness (refrigerants + signal).
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Drain with gravity slope towards the outside: reliability and zero pump noise .
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Soldered connections, leak test , deep vacuum and commissioning according to our AirGreen procedures.
Power supply and protections
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Dedicated power supply by circuit breaker according to the intensities of the chosen range.
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Signal wiring between the indoor unit and the outdoor condenser placed on brackets or slab (depending on the facade).
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Checking the direction of rotation of the compressor, tightening to the torque, and final check of the load currents.
Installation process (1 typical day)
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Surface protection and site preparation.
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Wall bracket anchored to studs; plumb check.
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Drilling and installation of the capping .
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Passage of lines (CVAC class insulated copper), drain and communication cable .
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Nitrogen brazing , pressure testing, vacuum , valve opening.
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Functional tests : heating, air conditioning, dehumidification; subcooling/superheating measurement .
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Finishing and customer briefing (use, filters, eco-actions).
What the customer gains immediately
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Uniform comfort without annoying drafts thanks to automatic sweeping .
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Minimal noise : ideal for teleworking and sleeping.
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Energy savings : the heat pump transfers heat instead of producing it, reducing consumption compared to electric convectors.
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Healthier air : washable filtration and quick maintenance.
AirGreen Recommended HVAC Maintenance
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Monthly cleaning of filters during heavy use season.
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Annual inspection : operating pressure, electrical tightening, cleaning of the evaporator and condensate tray.
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Clearing the outside condenser (leaves, snow) to preserve heat exchange and performance in cold weather .
Grants and Eligibility
High-efficiency R-32 wall-mounted heat pumps may be eligible for programs in effect in Quebec, subject to conditions (model, winter performance, installation by an RBQ contractor). We assist our clients in Montreal, Laval, Longueuil, the North Shore and the South Shore in verifying eligibility and preparing supporting documents.
Why entrust your HVAC installation to AirGreen?
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Local expertise : daily installations throughout Greater Montreal .
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Rigorous methodology : load calculation, instrumented commissioning, quality protocols.
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After-sales service : proactive monitoring, maintenance reminders, rapid diagnostics in season.
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Transparency : detailed quotes, clear advice, tailored recommendations (wall-mounted, multi-zone, central as needed).
What if your project is different?
House in Laval with several floors? Condo in Longueuil with facade restrictions? Plex on the North Shore with closed rooms? We also offer MultiZone heat pumps , ceiling cassettes , floor-ceiling consoles or central R-32 / R-454B systems (Midea EVOX, Gree Flexx, etc.), always according to the architecture and your priorities (silence, aesthetics, budget, subsidies).
AirGreen — Heat Pumps, Air Conditioning & Heating
Montreal • Laval • Longueuil • North Shore • South Shore
Careful, durable HVAC installations designed for our climate.