LG Multi F MAX LGRED R32 Heat Pump | 4 Zones + 42000 BTU | Montérégie
SEER2 (Seasonal Air Conditioning Efficiency)
HSPF2 (Seasonal heating efficiency)
EER2 (Instantaneous efficiency in air conditioning)
COP at -8 °C (Heating energy efficiency)
CFM (Airflow) (12,000 BTU***)
A multi-zone solution designed for demanding Quebec buildings
At AirGreen Heat Pumps, Air Conditioning & Heating , we have been installing HVAC systems designed to meet the climatic and architectural realities of Quebec for over 15 years. The LG Multi F MAX LGRED R32 – 4 zones, 42,000 BTU heat pump fits perfectly into this approach: a robust, precise and scalable multi-zone system, capable of providing heating and cooling in complex single-family homes, duplexes, multigenerational homes or small commercial buildings in Montérégie , Montreal , Laval , Longueuil , on the North Shore and the South Shore .
This model is based on a KUMXA421A outdoor unit, compatible with up to 6 indoor units , allowing for a customized configuration to suit the specific needs of each zone. This is precisely the kind of flexibility sought by homeowners looking to replace an energy-inefficient central system or modernize a building with limited space.
Why the Multi F MAX LGRED R32 stands out on the field
A truly independent management of the areas
Unlike traditional systems where a single setting dictates the behavior of the entire house, the LG Multi F MAX heat pump allows for independent zone control . Each indoor unit can operate according to its own schedule and temperature: bedrooms, living rooms, offices, or separate living spaces thus benefit from precise comfort without unnecessary overconsumption.
In our projects in Boucherville , Saint-Bruno-de-Montarville and Longueuil , this type of configuration has significantly reduced complaints related to temperature differences between floors, a very common problem in multi-level buildings.
Actual performance in Quebec's cold climate
The LGRED R32 outdoor unit is designed to maintain stable heating capacity down to -25°C , a key requirement for a sustainable HVAC system in Quebec. Unlike some less suitable multi-zone solutions, this system retains usable power even during periods of intense cold, thus reducing the need for supplemental electric heating.
R-32 refrigerant: efficiency and environmental responsibility
The choice of R-32 refrigerant is not insignificant. It offers:
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A lower global warming potential than older refrigerants.
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Improved thermodynamic efficiency.
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A reduced refrigerant charge for an equivalent capacity.
In a context where environmental standards are evolving rapidly, this choice ensures regulatory sustainability and added value to the building.
Key technical data that really matters on the construction site
Rather than overwhelming owners with theoretical and unrepresentative figures, we focus on the parameters that have a concrete impact during installation and daily use:
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Cooling capacity : 42,000 BTU
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Active zones : 4 (expandable up to 6 depending on the configuration)
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Voltage : 220 V
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MCA : 33 A
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MOP : 40 A
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Outdoor noise level : approximately 56 dB(A)
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Built-in Wi-Fi for remote control
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ENERGY STAR® certified , including the cold climate category
These elements directly influence electrical compatibility, the location of the outdoor unit, as well as the tranquility of the occupants — points that our refrigeration technicians systematically analyze during technical visits.
Installation flexibility: a decisive advantage in renovation
Pipe lengths and elevation changes adapted to existing buildings
The Multi F MAX LGRED allows for very long total pipe lengths and significant elevation differences between units, facilitating integration into existing buildings without major structural work. This feature is particularly valued in renovation projects in Montreal and on the South Shore , where architectural constraints are common.
We recently installed this system in a duplex in Saint-Lambert , where the distance between the outdoor unit and the last indoor unit far exceeded what conventional wall-mounted systems allow. The result: a clean installation without compromising performance.
Wide selection of indoor units
The system accepts several models of LG indoor units: wall-mounted, console, or compact ducted units. This versatility allows for adapting the aesthetic appearance and air distribution to each space, an aspect often overlooked when initially choosing a heat pump.
LogisVert subsidy and long-term profitability
The LG Multi F MAX LGRED R32 heat pump is eligible for the LogisVert provincial subsidy , with an amount of up to $3,792 depending on the building's configuration and eligibility. At AirGreen , we support our clients in Montreal , Laval , and the Montérégie region through every step:
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Validation of eligibility.
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Compliant technical documentation.
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Post-installation coordination.
Beyond the subsidy, reducing energy consumption and intelligent zone management allow for sustainable optimization of operating costs , particularly in multi-unit residential buildings.
Common mistakes avoided thanks to our field experience
Over the years, we have observed several recurring errors in multi-zone projects:
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Undersized outdoor unit.
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Poor distribution of resources between zones.
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Inadequate choice of outdoor location resulting in noise or snow accumulation.
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Pipe lengths not optimized.
Our approach is based on a comprehensive thermal analysis , precise planning of the refrigeration network, and installation that meets the manufacturer's requirements. This meticulous approach guarantees the system's long-term reliability.
Why entrust the installation to AirGreen
Choosing AirGreen means benefiting from:
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Certified refrigeration technicians with extensive experience in LG multi-zone systems.
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$5 million in liability insurance .
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Transparent pricing , validated before work begins.
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A structured and responsive after-sales service.
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With in-depth knowledge of the local realities of Montreal , Laval , Longueuil , North Shore , South Shore and Montérégie .
Each installation is conceived as a unique project, not as a simple installation of equipment.
Conclusion
The LG Multi F MAX LGRED R32 4-zone, 42,000 BTU heat pump is a complete HVAC solution for homeowners seeking performance, flexibility, and energy efficiency in demanding climates. When properly configured and installed, it will permanently improve a building's comfort while keeping costs under control.
To obtain a detailed quote , confirm your eligibility for LogisVert subsidies , or discuss your project in the Montérégie region , Montreal , Laval , Longueuil , on the North Shore or South Shore , contact AirGreen Heat Pumps, Air Conditioning & Heating directly. Our team will support you with a clear, technical, and results-oriented approach.