Adapting to the climate crisis by choosing the right wall-mounted air conditioning system
In a world where the climate crisis is redefining our energy consumption habits, residential and commercial air conditioning has become a key environmental concern. At AirGreen, we understand the importance of installing wall-mounted air conditioners that are not only efficient but also eco-friendly, perfectly suited to the energy realities of Quebec and, more specifically, to our clients across Montreal, Laval, Longueuil, North Shore, and South Shore. This article will help you better understand the environmental issues tied to wall-mounted AC systems and how to make a smart and sustainable choice—without compromising on comfort.
Wall-mounted air conditioning and its environmental impact
Energy consumption: often underestimated
Wall-mounted air conditioning, though economical and easy to install, represents a significant portion of summer electricity usage—especially in urban areas like Montreal. If poorly chosen or improperly installed, it can quickly become a major source of both energy consumption and environmental strain.
The type of refrigerant used, the energy efficiency of the unit, and even the design of the installation all make a real difference. That’s why at AirGreen, we exclusively select high-efficiency models, such as those using R-32 or R-454B, both known for their low global warming potential (GWP).
Refrigerants: a critical factor to consider
Older refrigerants like R-22 and R-410A are gradually being phased out due to their heavy impact on global warming. Today, models like the FUJITSU KZAH R-32 or the Bosch BIVA IDS Premium R-454B are becoming standard at AirGreen, thanks to their strong performance and compliance with the most rigorous environmental standards.
What we install: real, responsible solutions
Installation example: FUJITSU KZAH R-32 in Longueuil
In Longueuil, we recently installed a 12,000 BTU FUJITSU KZAH R-32 wall-mounted heat pump, a perfect choice for small residential spaces. This unit combines high energy efficiency, ultra-quiet operation, and, most importantly, uses the R-32 refrigerant, which has a GWP that’s 68% lower than R-410A.
Technical challenge faced: the duplex’s brick façade limited the drain route. Our team came up with a tailored solution by installing a discreet line cover, optimizing both aesthetics and durability.
Installation example: Bosch BIVA IDS Premium R-454B in Laval
In Laval, we were called to cool a multi-story single-family home. We proposed a hybrid central solution, including an auxiliary Bosch BIVA IDS Premium R-454B wall-mounted unit, to provide optimal comfort upstairs without overloading the main system.
This unit uses R-454B, a next-generation refrigerant with a GWP 78% lower than R-410A. Beyond its technical merits, it's eligible for the LogisVert grant, which allowed the customer to reduce their investment by over $1,700.
How to choose an environmentally friendly wall-mounted AC system?
1. Check the Seasonal Energy Efficiency Ratio (SEER)
The higher the SEER, the more efficient the unit. We recommend at least 20 SEER for regions like Montreal and the North and South Shores, where heatwaves are becoming increasingly frequent. Models like the Sharp ZU1 easily meet this benchmark.
2. Choose refrigerants with low GWP
R-32 and R-454B are today’s most eco-conscious options. Avoid low-end models still using R-410A, now considered harmful to the climate.
3. Go for a custom professional installation
Even the best unit can lose up to 30% of its efficiency if poorly installed. At AirGreen, every wall-mounted HVAC installation is customized based on the size of the space, sun exposure, indoor layout, and especially the building’s insulation quality.
Why choose AirGreen for a greener installation?
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Tailored advice to help you choose a system that truly meets your needs.
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Certified and reliable brands like Fujitsu, Gree, Bosch, Sharp.
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Optimized power consumption to lower your electricity bill.
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Access to grants from Hydro-Québec, LogisVert, and Transition Énergétique Québec.
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Reduced GHG emissions over the long term through sustainable choices.
Boost your system’s efficiency: practical tips
Keep your wall-mounted AC well maintained
Regular HVAC maintenance helps preserve your system’s energy efficiency. We recommend a professional cleaning once a year, ideally in spring, to ensure top performance through summer. This includes:
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Cleaning the filters,
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Rinsing the coils,
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Checking all refrigerant connections,
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Inspecting refrigerant pressure.
Use your AC strategically
Set your unit to eco mode, maintain a stable indoor temperature, and close blinds to block direct sunlight. These simple habits extend your unit’s lifespan and reduce your carbon footprint.
AirGreen’s commitment to a greener future
We strongly believe that embracing responsible HVAC systems is essential in fighting the climate crisis. With our field expertise, technical know-how, and dedication to eco-conscious solutions, we are proud to offer service that goes beyond just air conditioning: we’re helping build a more sustainable future, one home at a time.
Conclusion: wall-mounted air conditioning can be eco-friendly—if you choose wisely
The shift to eco-friendly wall-mounted air conditioning systems isn’t just possible—it’s necessary. At AirGreen, we support you at every step: from selecting the right unit to professional installation, and with practical advice to maximize your system’s energy efficiency. Together, let’s turn your comfort into a meaningful action for the planet.