LG Multi F MAX LGRED R32 Heat Pump | 8 Heads at 48,000 BTU | Montérégie

BROCHURE

A multi-zone HVAC solution designed for complex buildings in the Montérégie region

In the residential, light commercial, and multi-unit residential sectors of Montérégie , Montreal , Laval , Longueuil , the North Shore , and the South Shore , heating and cooling needs are evolving rapidly. Buildings are more compartmentalized, uses are more varied, and expectations for comfort, control, and energy efficiency are high.
The LG Multi F MAX LGRED R32 heat pump with 8 indoor heads and a nominal capacity of 48,000 BTU precisely meets this type of reality.

At AirGreen , we install this type of system when simpler solutions reach their limits: large cottages, multi-unit residential buildings, offices spread across several zones, and commercial spaces with varying heating and cooling loads. This multi-zone system allows for room-by-room comfort adjustments while maintaining a single, high-performance outdoor unit.

Technical architecture of the LG Multi F MAX LGRED R32 system

A robust outdoor unit designed for the Quebec climate

The core of the system is the KUMXA481A outdoor unit, designed to operate efficiently across a wide temperature range, with a heating capacity down to -25°C . This makes it a viable solution for year-round use in the Montérégie region and throughout Greater Montreal.

From a technical standpoint, this unit incorporates:

• A variable speed scroll compressor ensuring precise power modulation.

• Stable heating operation even during prolonged cold spells.

• Intelligent defrost management is essential to maintain performance in winter.

• A design compatible with long pipe runs, which facilitates integration into complex existing buildings.

8 independent zones, one central system

The Multi F MAX allows you to connect up to 8 indoor units of various sizes and capacities:

• 9,000 BTU

• 12,000 BTU

• 14,300 BTU

• 18,000 BTU

This flexibility is crucial. In the same building, a living room with windows, a north-facing bedroom, and a computer room never have the same heating and cooling requirements. Thanks to this architecture, each area receives precisely the necessary capacity, without unnecessary oversizing.

Why R-32 refrigerant is a game changer

The choice of R-32 is not insignificant. This new generation refrigerant offers several concrete advantages:

• Reduced environmental impact compared to older gases.

• Better thermodynamic efficiency, therefore less energy consumed at equivalent load.

• Lower quantity of refrigerant required for the same capacity.

In our projects on the South Shore and in Montérégie , we find that R-32 systems offer increased stability and a faster response to load variations, particularly in mid-season.

Air management, acoustics and real comfort

Controlled noise levels

The outdoor unit has a noise level of approximately 56 dB(A) , which is compatible with the majority of residential and commercial environments when the installation is properly planned.
The indoor units, meanwhile, operate at very discreet levels depending on the model chosen, which is particularly appreciated in bedrooms and offices.

Precise and even air distribution

LG wall-mounted heads compatible with the Multi F MAX offer:

• An automatic vertical and horizontal scan .

• Uniform air distribution, limiting cold or overheated areas.

• Independent control by zone is essential to avoid comfort conflicts between occupants.

Multi-zone installation: what the AirGreen experience really changes

Installing an LG Multi F MAX system is not something to be done on a whim. The complexity lies not only in the equipment, but also in the design of the refrigeration network :

• Management of equivalent pipe lengths .

• Strict adherence to maximum height differences between units.

• Correct integration of the distribution boxes , which are mandatory for the system to function.

At AirGreen , every project begins with a detailed analysis:

• Accurate survey of the building.

• Calculation of charges per zone.

• Validation of piping routes and technical access points.

This approach helps to avoid common problems observed in poorly planned installations: capacity losses, short cycles, imbalances between zones or excessive noise.

Concrete examples of installations in Montérégie and the South Shore

In a multi-unit residential building in Boucherville , we installed a Multi F MAX 48,000 BTU to serve 7 residential units. Each unit had different needs depending on its orientation and occupancy.
The result:

• Significant reduction in complaints related to comfort.

• More stable energy consumption over the year.

• Simplified maintenance thanks to a single outdoor unit.

In a commercial building in Longueuil , the system made it possible to separate customer areas, offices and technical rooms, each with its own temperature guidelines.

LogisVert subsidy and energy compliance

This system is eligible for the provincial LogisVert grant , with an amount of up to $4,200 , depending on the configuration and the project.
AirGreen systematically supports its clients in:

• Validation of eligibility.

• The preparation of the required technical documents.

• Compliance with the required performance criteria.

Maintenance, durability and guarantees

The LG Multi F MAX LGRED R32 is designed to last, but like any advanced HVAC system, it requires structured maintenance :

• Annual check of compressor pressures and operation.

• Cleaning of heat exchangers and filters.

• Electrical and communication connection control.

The standard warranty covers 10 years on the compressor and parts , with the possibility of extensions depending on the project and the agreement chosen.

Why choose AirGreen for this type of system?

This type of multi-zone heat pump does not tolerate approximation or improvisation.
Choosing AirGreen means benefiting from:

• Extensive expertise in LG multi-zone systems .

• Certified installers experienced in complex configurations.

• With full coverage including $5 million liability insurance .

• With an active presence in Montreal, Laval, Longueuil, North Shore, South Shore and Montérégie .

Conclusion

The LG Multi F MAX LGRED R32 heat pump | 8 heads | 48,000 BTU represents a high-level HVAC solution for demanding buildings, where zoned comfort, winter reliability, and energy efficiency are non-negotiable.

For a personalized analysis , a detailed quote , or a technical validation of your project , contact AirGreen directly. Our team will take the time to assess your building and design an installation perfectly suited to your needs.