Four-season comfort in a Rosemont condo: a clean, fast HVAC installation designed for the Montreal climate
The customer context
In a bright condo in Rosemont–La Petite-Patrie , our client was looking for a quiet, efficient, and reliableheating and cooling solution to replace an old window fan and reduce reliance on electric baseboard heaters. The priorities: stable comfort in the open living room-kitchen area, measurable energy savings, and impeccable aesthetics inside and out.
The technical choice: Gree Vireo R32 12,000 BTU
Here we recommend a Gree Vireo R32 12,000 BTU, perfectly sized for an open area of 35–50 m² typical of Montreal condos. This R-32 range meets current requirements for efficiency and environmental impact, while offering:
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seasonal efficiency up to ≈ 20 SEER2 in cooling;
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an HSPF2 around 9–10 for heating;
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a useful heating capacity down to -25°C , ideal for our winters;
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a low noise level, very popular in condos .
Desired result: immediate comfort in summer and in the off-season, lower electricity bills in winter, and almost imperceptible operation.
Our AirGreen method: precision, cleanliness, performance
Visit and load calculations
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Quick thermal assessment (orientation, glass surfaces, sealing, occupants, cooking appliances).
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Validation of refrigerant connection lengths and gravity drainage to avoid the addition of a condensate pump.
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Checking the dedicated electrical circuit and the location of the external circuit breaker.
Inner head positioning
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The wall head is installed at the correct height for optimal scanning of the open area.
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Clearances respected for maintenance and air circulation; the diffusion covers the kitchen and living room without direct air currents on the seating area.
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Single hole (≈ 65 mm) behind the unit for invisible connections inside and a clean exit to the outside.
Refrigeration path and condensate evacuation
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Insulated copper refrigeration lines installed with particular care on the bending radii, brazing under nitrogen and nitrogen leak testing .
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Gravity drainage with continuous outward slope, which eliminates the risk of pump noise and simplifies HVAC maintenance .
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Exterior capping matching the facade, UV-resistant, for a durable and discreet finish.
Outdoor unit and anti-vibration
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Condenser fixed on sturdy wall brackets (galvanized steel), anti-vibration wedges to protect the masonry and reduce noise transmission.
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Clearances provided for winter defrosting and air circulation.
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Accessible external circuit breaker ; wiring to current standards.
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Minimum level above the snow to avoid accumulation and ensure good water drainage during defrosting.
Commissioning and quality controls
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Deep vacuum (≤ 500 microns) with extended draw, purge and stabilization.
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Opening of pre-charged R-32 fluid, superheat/subcooling control .
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Complete test in cold and heat, measurement of intensity and delta T.
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Setting auto scan , eco mode and timers.
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HVAC user guide and maintenance tips provided to the customer.
Why this Gree Vireo R32 is a good match for Rosemont
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Local climate : the ability to heat down to –25°C covers the majority of cold temperatures encountered on the Island of Montreal and the North Shore .
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Efficiency : R-32 and high efficiencies reduce operating costs, especially compared to baseboards.
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Silence : low sound pressure is suitable for adjoining buildings and condominiums.
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Aesthetics : simple interior unit; discreet exterior capping , in accordance with the requirements of co-ownership associations.
Salient installation details (construction site side)
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Total length of links optimized (≈ 5–7 m in this case) to preserve efficiency.
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Direct wall-to-wall crossing , without excessive bends, to limit pressure losses.
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100% gravity-based condensate management with continuous slope, avoiding additional maintenance.
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Careful finishing of the holes (sleeve, sealant, vapor barrier) for a lasting seal.
Instructions for use and maintenance (to maintain performance)
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Filter : vacuum monthly during periods of heavy use; quickly wash with warm water then dry thoroughly.
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Exchanger : Plan for professional cleaning of the coils every 18–24 months (suitable R-32 detergent).
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Outdoor unit : Clear leaves, snow and ice; check that nothing is obstructing the rear.
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Modes : favor Auto mode in summer and Heat stable in winter; avoid frequent hot/cold switching.
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Temperature : Aim for a constant setting (22–23°C) to maximize COP and comfort.
Grants and incentives
High-efficiency R-32 wall-mounted heat pumps are generally eligible for certain assistance programs in Quebec. Depending on the period and your municipality ( Montreal, Laval, Longueuil, North Shore, South Shore ), Hydro-Québec or municipal incentives may apply. We always verify eligibility and prepare, if necessary, the documents for your file.
What the customer actually gains
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4-season comfort : uniform cooling in summer and gentle warmth in winter.
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Savings : significant reduction in consumption linked to baseboards.
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Quiet : Minimal noise, perfect for teleworking and movie nights.
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Value : Improved appeal of the condo on the rental and resale market.
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Peace of mind : clean installation, manufacturer's warranty and local AirGreen service .
Key steps of a typical project with AirGreen
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Technical evaluation and detailed offer (dimensions, BTU, yields, installation scenarios).
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Planning with your availability and that of the condominium association if necessary.
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One-day installation for a standard wall-mounted air conditioner/heat pump head.
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Instrumented commissioning and user training.
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Follow-up : maintenance reminder, filters, service availability in 24–72 hours depending on the season.
Best practices to remember (and pitfalls to avoid)
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Sizing : Aim for the correct BTU output; oversizing reduces efficiency in mid-season.
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Drain : always use gravity ; a pump is a last resort.
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External support : provide the height suitable for snow/frost episodes.
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Electricity : Dedicated circuit compliant; avoid extension cords or shared outlets.
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HVAC Maintenance : A clean filter is worth kilowatts saved and a longer lifespan.
Why AirGreen
As a field HVAC installer, we combine practical engineering , attention to detail and local after-sales service . With every project, our promise is simple: an efficient , aesthetic and durable solution, ready for Montreal winters as well as heat waves.
Are you in Montreal , Laval , Longueuil , on the North Shore or the South Shore ?
Our team covers the entire Greater Montreal area. Whether you're looking for a wall-mounted heat pump , a multi-zone system , a central heat pump , or HVAC maintenance , we size and install with the same high standards.
Project summary sheet
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Type : wall-mounted heat pump (heating + air conditioning function)
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Brand / Range : Gree Vireo R32
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Capacity : 12,000 BTU (open concept condo)
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Installation : single drilling, gravity drain , discreet exterior capping, anti-vibration wall brackets
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Advantages : high efficiency, useful heating at –25°C , very low noise
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HVAC maintenance : monthly filter, professional check every 18–24 months
Ready for uncompromising comfort?
Contact us for a quick quote. At AirGreen , we take care of the selection , HVAC installation , and monitoring . Your comfort is guaranteed, season after season.
Useful keywords : heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore , Gree Vireo R32 , Rosemont–La Petite-Patrie .