LG Multi F LGRED R32 Heat Pump | 2 Indoor Units - 1 Compressor 18000 BTU
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 the residential realities of Quebec
At AirGreen , we have been installing multi-zone systems for many years in a wide variety of settings: duplexes in Montreal , single-family homes in Laval , new condos in Longueuil , multigenerational properties on the North Shore , and renovated residences on the South Shore . The LG Multi F LGRED R32 dual-zone 18,000 BTU heat pump is one of the configurations we recommend when a single outdoor compressor needs to supply two separate spaces with different heating requirements, while maintaining a clean, efficient, and durable installation.
This type of system addresses a common problem: how to heat and cool two rooms without increasing the number of outdoor units, compromising the building's aesthetics, or unnecessarily oversizing the equipment. LG's Multi F provides a practical solution to these constraints, particularly in dense urban environments.
Understanding the logic of a Multi F system with two indoor units
A multi-zone system operates on a simple principle: a single outdoor compressor powers two independent indoor units . Each unit has its own control, sensors, and power modulation. In the case of the LG Multi F LGRED R32 , the total nominal capacity of 18,000 BTU is intelligently distributed according to the actual demand of each zone.
In practical terms, this means:
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A north-facing bedroom may require heating while a sunnier living room remains stable.
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A room used full-time can receive more power than a secondary space.
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Power consumption adjusts continuously, without abrupt cycles.
During our installations in Montreal and Laval , this type of configuration is often chosen for homes where you want to air condition a living room and a bedroom, or a ground floor and an office, without multiplying the equipment visible outside.
Choosing R-32 refrigerant: efficiency and environmental compliance
R-32 gas represents a major advancement in residential HVAC . Compared to older refrigerants, it offers:
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A reduced global warming potential , in line with current regulatory guidelines.
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Improved heat transfer capacity, which enhances actual heating and cooling efficiency.
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A lower refrigerant charge for equivalent performance.
In our projects on the South Shore and in Montérégie , this criterion is increasingly important for clients who want to invest in a sustainable solution, compatible with future standards, and eligible for the LogisVert provincial subsidy programs when applicable.
Performance in winter heating: a priority at AirGreen
In Quebec, heating capacity in cold weather is never an afterthought. The LG Multi F LGRED R32 heat pump is designed to maintain stable heat output even in very low temperatures, making it a relevant choice as a primary or supplementary heating system.
On site, our refrigeration technicians observe:
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A gradual temperature increase, without excessive drying of the air.
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Appreciable thermal stability in remote rooms.
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A significant reduction in the use of electric baseboard heaters.
In several installations carried out in Longueuil and on the North Shore , this type of system has made it possible to significantly reduce the annual energy bill, while improving perceived comfort, particularly in rooms that were previously difficult to heat.
Flexibility of indoor units: a real advantage in renovation
One of the strengths of the LG Multi F lies in its compatibility with several models of indoor units . This flexibility is particularly useful in renovation projects, where architectural constraints vary from room to room.
At AirGreen , we adapt the choice of units according to:
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The actual area of each zone.
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Ceiling height.
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Orientation and sunlight.
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The desired sound level.
In a condo in Montreal East , for example, we installed a more compact and very quiet unit in one bedroom, and a higher airflow unit in the main living area. This customized approach is at the heart of our HVAC installation method.
Noise levels and acoustic comfort
Comfort isn't just about temperature. Noise level is a crucial factor, especially in urban living. Indoor units compatible with this system are designed to operate at low sound pressure levels, making them suitable for bedrooms, home offices, and relaxation areas.
During our interventions in Laval and Boucherville , several clients mentioned to us that the discreet operation of the system had a direct impact on sleep quality and concentration at work.
HVAC installation: the importance of sizing and installation
A poorly sized or installed multi-zone system quickly loses its advantages. At AirGreen , every project begins with a precise analysis:
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Calculation of thermal load per zone.
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Verification of the length of the refrigeration lines.
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Power supply validation (220 V, MCA, MOP).
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Choosing the optimal location for the outdoor compressor.
During rework carried out by other contractors, we observed that the most frequent errors concerned power distribution between zones and de-icing management in winter. Our approach aims to avoid these problems from the project design stage.
HVAC maintenance and long-term durability
A well-maintained LG Multi F LGRED R32 system retains its performance for many years. We recommend:
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An annual HVAC service including filter cleaning, pressure checks and electrical inspection.
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Periodic monitoring of condensate drainage.
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A check of heating efficiency before the winter season.
In our customer follow-ups in Montreal and on the South Shore , regular maintenance helps to maintain stable operation and significantly reduce the risk of breakdowns during peak periods.
Why entrust this project to AirGreen?
Choosing AirGreen means benefiting from:
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With proven field expertise in LG multi-zone systems.
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Certified refrigeration technicians accustomed to the climatic realities of Quebec.
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A transparent approach, with recommendations tailored to each building.
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Clear support for LogisVert subsidies , when applicable.
We never offer a standardized system without taking into account the specific characteristics of the home. Each installation is designed to be coherent, durable, and truly useful on a daily basis.
A coherent investment for two very distinct areas
The LG Multi F LGRED R32 heat pump – 2 indoor units, 1 compressor, 18,000 BTU – represents a balanced solution for homeowners who want to optimize their comfort without adding to their outdoor infrastructure. In residential settings in Montreal , Laval , Longueuil , the North Shore , and the South Shore , this type of configuration offers a smart compromise between performance, quiet operation, and energy efficiency.
Take action with AirGreen
To obtain a detailed quote , confirm the compatibility of this system with your home, or discuss your HVAC installation project, contact AirGreen directly. Our team will take the time to analyze your situation and offer you a truly tailored solution.