An optimized technical installation on a commercial building
At AirGreen , we regularly encounter challenging installation situations. In Saint-Laurent, on the flat roof of a commercial building, we recently installed a Midea wall-mounted heat pump . The project presented specific challenges: managing refrigerant lines over a long distance, positioning on an elevated support, and commissioning with a vacuum pump and manifold to ensure optimal energy efficiency.
Choosing a Midea wall-mounted heat pump
Midea appliances are renowned for their balance of energy efficiency and reliability in cold climates. The model chosen here is a wall-mounted mini-split unit, with a capacity of 12,000 BTUs , perfectly suited to the surface area served. This type of equipment is particularly interesting for office buildings or small businesses that want to reduce their operating costs while improving indoor comfort.
The particularities of the installation
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Raised roof support : the outdoor unit rests on anti-vibration pads fixed to treated beams, in order to avoid any direct contact with the roof membrane.
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Insulated piping : The refrigeration lines have been carefully insulated and secured, ensuring better energy efficiency and protection against climatic variations.
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Professional commissioning : Use of a vacuum pump and digital manifold to ensure complete evacuation of air and moisture before refrigerant charging.
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Safety and compliance : compliance with current electrical standards with properly sized and protected wiring, essential for the durability and safety of the installation.
Challenges and solutions provided
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Roof exposed to the elements : we have installed strong supports and provided sufficient clearance for snow and rainwater.
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Length of refrigerant lines : to avoid performance losses, we have adjusted the diameter and length of the pipes according to the manufacturer's recommendations.
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Condensate drainage optimization : a lifting pump was added to ensure reliable flow to the planned pipes, thus avoiding any accumulation of water on the roof.
Benefits for the customer
Installing this Midea wall-mounted heat pump in Saint-Laurent brings immediate benefits:
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Reduced heating and cooling costs thanks to a high coefficient of performance.
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Eligibility for energy subsidies offered in Greater Montreal, particularly for Energy Star certified heat pumps.
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Stable comfort in all seasons, with performance maintained even at low outside temperatures.
Why choose AirGreen for your HVAC projects in Montreal and on the North Shore
Each AirGreen installation is custom-designed, whether it's a condo in Montreal, a house in Laval, or a commercial building on the South Shore. Our RBQ-certified technicians ensure:
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Complete and guaranteed commissioning ,
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A follow-up for HVAC maintenance,
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Support in grant applications.
Conclusion
This installation demonstrates that even in complex environments such as a commercial flat roof, it is possible to install a reliable and efficient wall-mounted heat pump . At AirGreen, we combine technical expertise and compliance with standards to ensure lasting results for customers in Montreal, Laval, Longueuil, the North Shore and the South Shore.