LG MULTI F MAX R32 6-Head Heat Pump | 60,000 BTU Compressor

BROCHURE

A multi-zone solution designed for demanding buildings in Quebec

At AirGreen , we have been installing multi-zone HVAC systems for many years in contexts where the needs far exceed those of a standard residence. The LG MULTI F MAX R32 6-Head Heat Pump | 60,000 BTU Compressor is specifically designed for these realities: large single-family homes, multi-unit residential buildings, offices, clinics, commercial spaces, or mixed-use buildings located in Montreal , Laval , Longueuil , on the North Shore or the South Shore .

This type of project always presents the same challenges: how to ensure consistent comfort across multiple independent zones, how to optimize energy consumption, and how to avoid the proliferation of outdoor units that complicate installation, maintenance, and the building's aesthetics. It is precisely on these points that the LG MULTI F MAX R32 system stands out.

An architecture designed for complex multi-zone systems

The foundation of this system lies in a single outdoor unit capable of supplying up to 6 active zones , with a maximum capacity of up to 8 indoor units depending on the chosen configuration. This flexibility is essential in the projects we regularly undertake in Montreal and the Montérégie region, where each floor, each dwelling, or each commercial space has different heating and cooling requirements.

Unlike makeshift solutions using multiple independent heat pumps, the LG MULTI F MAX R32 centralizes management while maintaining individual zone control . Each occupant thus benefits from their own comfort, without compromising the overall performance of the system.

Thermal performance adapted to Quebec's actual climate

Reliable heating in winter conditions

In our field experience, we know that a system's advertised capacity is only valuable if it holds up when temperatures actually drop. This type of multi-zone platform is designed to offer stable performance across a wide range of conditions, with a heating operating range down to approximately -20°C (depending on configuration and installation), which corresponds well to the realities encountered in Montreal , Laval , and the North Shore .

In multi-unit residential projects, the key isn't just "high power," but the system's ability to intelligently distribute demand between zones without creating imbalances (e.g., an overheated living room, excessively cold bedrooms, or vice versa). This is precisely where a well-designed and properly installed multi-zone system makes all the difference.

Powerful and balanced air conditioning

With a nominal capacity of around 56,000 BTU in air conditioning (and capable of going higher depending on the conditions), the system is perfectly suited to buildings with high thermal load: large glazed areas, upper floors exposed to the sun, commercial premises with heat-generating equipment.

In several projects in Longueuil and on the South Shore , this type of configuration has allowed us to correct recurring summer overheating problems without multiplying the units or unnecessarily oversizing the installations.

Energy efficiency and R-32 refrigerant

Why choosing R-32 makes a real difference

R-32 gas represents a significant advancement in HVAC today. It has a lower global warming potential than older refrigerants, while offering excellent thermodynamic efficiency. In practical terms, this translates to:

• Improved heat transmission

• More stable operating cycles

• Better controlled electricity consumption

In a context where energy costs and environmental requirements are playing an increasingly important role in homeowners' decisions, this technical choice is far from insignificant.

Truly meaningful performance indicators (COP)

Rather than displaying unrealistic figures, we favor credible and directly interpretable indicators:

• COP in air conditioning (nominal conditions): 3.52

• COP in heating mode (nominal conditions): 3.45

In simple terms: for every 1 kW of electricity consumed, the system can provide approximately 3.45 to 3.52 kW of thermal energy under these test conditions. In real-world conditions, efficiency varies depending on the outside temperature, piping length, simultaneous demand in different areas, and the quality of the installation—hence the importance of on-site execution.

Flexibility of interior units and adaptability to spaces

A wide selection of interior designs

The LG MULTI F MAX R32 allows you to combine several types of indoor units: wall-mounted, ceiling-mounted, console, or cassette, depending on the architectural constraints. Compatible models include:

• KNUAK091A, KNUAK121A

• KNUAB091A, KNUAB121A

• KNMAB151A, KNMAB241A

• NUAK181A , among others

This diversity is essential in the buildings we deal with in Montreal , where a single project can include residential housing, common areas and commercial zones.

Precise control of airflow and acoustic comfort

The indoor units offer automatic control of horizontal and vertical louvers , ensuring even air distribution. In terms of sound comfort, the objective in a multi-zone system is twofold: to maintain a quiet interior and to prevent the outdoor unit from becoming a nuisance (especially in dense urban areas).

For this type of outdoor unit, the noise level is around 56–58 dB(A), depending on the operating mode, location, and load. Proper installation (supports, clearances, vibration damping, orientation) often contributes more to acoustic comfort than the actual figure on paper.

Technical installation: what experience actually changes

Piping constraints and elevation differences

Multi-zone systems require rigorous planning. Here, the system's strength lies in its tolerance for complex configurations, with high piping limitations:

• Total (equivalent) piping length up to 475.7 ft

• Maximum length of the main line (outdoor unit to distribution) up to 180.4 ft

• Total branch length (distribution to indoor units) up to 295.3 ft

• Level difference between outdoor unit and indoor units up to 98.4 ft

• Maximum spacing between indoor units up to 49.2 ft

These figures open the door to realistic projects: duplexes/triples, multi-unit dwellings, buildings with basements and upper floors, or commercial spaces where zones are far apart. But they don't replace the golden rule: a clean HVAC design , validated and executed without shortcuts.

Power supply and protection

The system is 208–230V, 60 Hz, 1 phase , with typical protection and amperage values:

• MOP: 40 A

• MCA: 33.3 A

This data directly influences the choice of electrical protection devices, the sizing of the wiring, and coordination with the electrician. A poor assessment at this stage can lead to nuisance tripping or premature wear of components—and, most importantly, avoidable service interruptions.

Feedback from the field: what our customers observe after installation

In a multi-unit apartment building in Boucherville , this type of multi-zone configuration (one outdoor unit, multiple zones) replaced several disparate installations. The owners quickly noticed:

• Improved temperature stability between dwellings

• A reduction in service interventions (fewer separate systems to manage)

• Simplified management for annual maintenance

In another commercial project in Montreal East , centralization freed up outdoor space while improving employee comfort, particularly in areas far from the outdoor unit.

Why entrust this type of project to AirGreen?

Installing a multi-zone heat pump of this size is not simply a matter of installing equipment. It involves:

• A careful analysis of the building's actual needs

• A mastery of electrical and mechanical standards

• Precise coordination between the different trades

At AirGreen , our refrigeration technicians have the experience to handle these complex systems, whether in high-end residential , commercial , or multi-unit buildings . We offer transparent pricing , $5,000,000 liability insurance , and rigorous after-sales service.

A solution designed to last

The 10-year warranty on the compressor and parts reflects the robustness of this type of platform. Additional warranty options are also available, depending on the project type and the owner's requirements.

In a market where many solutions are offered without a real long-term vision, the LG MULTI F MAX R32 positions itself as a coherent choice for those looking for a reliable, scalable and efficient HVAC system .

Conclusion

If you're planning a project requiring a high-performance multi-zone heat pump in Montreal , Laval , Longueuil , on the North Shore or South Shore , we invite you to contact AirGreen . We'll analyze your building in detail and offer you a tailored, sustainable, and clearly explained solution.

Contact us now for a personalized quote or to discuss your project with an HVAC installation specialist.