LG MULTI F MAX R32 3-Head Heat Pump | 60,000 BTU Compressor

BROCHURE

A high-end, multi-zone solution designed for the realities of Quebec

At AirGreen , we have been installing HVAC systems for years in a wide variety of settings: single-family homes in Montreal, duplexes in Laval, multi-unit buildings in Longueuil, new residences on the North Shore , and more complex projects on the South Shore . Over time, some systems have clearly distinguished themselves through their flexibility, stability, and ability to meet the real needs of homeowners.
The LG MULTI F MAX R32 3-Head Heat Pump with 60,000 BTU compressor is one of those solutions we recommend when needs exceed a simple single-zone system.

This multi-zone model allows you to power up to three indoor units from a single outdoor unit, while offering a maximum capacity of up to 8 zones depending on the configuration. It is a particularly suitable choice for multi-story buildings, large residential areas, multigenerational homes, or certain rental properties where each zone needs to be controlled independently.

Why is the MULTI F MAX R32 different from other multi-zone systems?

Real and usable power, even for heating

With a rated output of 60,000 BTU , this system isn't just designed to impress on paper. In practice, we observe remarkable stability in heating capacity, even when temperatures drop.
The heat pump maintains excellent performance down to -16°C , with a measured output of approximately 42,000 BTU at -8°C and 46,000 BTU at -15°C , which is essential for the climate of Montreal , the Montérégie region and the more exposed areas of the North Shore .

In several recent projects, particularly in renovated duplexes in Laval, this consistency has made it possible to significantly reduce the use of supplementary electric systems, which directly translates into savings on energy bills.

Truly intelligent multi-zone management

Unlike some more basic multi-zone systems, the LG MULTI F MAX manages capacity distribution dynamically. Each indoor unit receives the necessary power according to actual demand, without penalizing other zones.
In practical terms, this means:

• A bedroom that requires little heating does not affect the comfort of the living room.

• A sunny floor does not conflict with a cooler basement.

• Each zone retains precise and independent control .

This operating logic is particularly appreciated in open-plan houses combined with closed spaces, a scenario we encounter very frequently in Longueuil and on the South Shore .

Choosing R-32 refrigerant: efficiency and environmental compliance

Switching to R-32 refrigerant is not insignificant. This refrigerant offers:

• improved energy efficiency ,

• a lower global warming potential than R-410A

• compatibility with current and future environmental standards.

In practice, this means a more efficient system, simpler to maintain in the long term, and better positioned to meet future regulations. For our clients concerned about the sustainability of their investment, this is a crucial point.

Energy performance and key technical data

The LG MULTI F MAX R32 heat pump displays solid performance indicators in both air conditioning and heating:

• Cooling capacity : 60,000 BTU

• SEER2 : very high for a multi-zone system of this capacity

• HSPF2 : Optimized for seasonal heating

• COP at -8 °C : 12.013

• ENERGY STAR® : Yes

• AHRI Number : 215402343

• Voltage : 220 V

• MCA : 34 A

• MOP : 40 A

This technical data corresponds to what we actually observe in the field during commissioning and post-installation monitoring.

A wide range of compatible indoor units

Another major advantage of this system is the flexibility in choosing indoor units . Depending on the building's configuration, we can combine:

• compact wall-mounted units,

• low consoles,

• More powerful units for large rooms,

• Discreet models for bedrooms or offices.

Compatible models include: KNUAK091A, KNUAK121A, KNUAK181A, KNMAB071A, KNUAB091A, KNUAB121A, KNMAB151A, KNUAB181A, KNMAB241A .
This diversity allows us to adapt each installation to the reality of the building, rather than forcing a standardized solution.

Dimensions, noise and integration into the building

Outdoor unit

• External dimensions : 37.41 x 15.66 x 54.34 in

• Outdoor noise level : 58 dB(A)

Despite its power, the outdoor unit remains relatively discreet for its category. When installed in dense urban environments, particularly in Montreal, this aspect is crucial to respecting the neighborhood and municipal regulations.

Indoor units

• Typical dimensions : 32.94 x 7.56 x 12.13 in

• Interior noise level : as low as 29 dB(A) depending on the model

In several residences where silence is a priority (bedrooms, home offices), this low noise level makes a real difference on a daily basis.

Installation: what our experience has taught us

Installing a multi-zone system of this scale is not something that can be done on a whim. At AirGreen , we've learned that success depends on several key factors:

• Precise calculation of thermal loads per zone

• Rigorous management of pipe lengths

• Strict adherence to maximum elevation differences

• Appropriate selection of distribution units (DDUs)

• Methodical commissioning with complete verification of pressures and flow rates

In a recent project in Boucherville, poor initial planning (before our intervention) would have resulted in a significant loss of performance. By revising the sizing and layout of the units, we corrected the problem even before final commissioning.

LogisVert subsidy and long-term value

This model is eligible for the LogisVert provincial grant , with an amount of up to $2,100 depending on eligibility and project configuration (updated: November 26, 2025).
Beyond the immediate financial assistance, it is above all the reduction in operating costs over several years that makes this system attractive for owners in the long term.

Guarantee and peace of mind

• Compressor warranty : 10 years

• Parts warranty : 10 years

• Labor warranty : 0 years (extended warranty available)

At AirGreen, we always support our clients in registering guarantees and offer additional protection options when the context warrants it.

Why choose AirGreen for this type of multi-zone system?

Installing an LG MULTI F MAX R32 multi-zone heat pump is not just about installing equipment:

• It's about designing a complete HVAC solution .

• anticipate the actual uses of the building,

• to provide a structured and responsive after-sales service.

Our certified refrigeration technicians , our $5 million liability insurance , our transparent pricing and our hands-on experience in hundreds of projects in Montreal , Laval , Longueuil , North Shore and South Shore make all the difference.

Conclusion

The LG MULTI F MAX R32 3-Head Heat Pump | 60,000 BTU Compressor is for homeowners looking for a serious, high-performance, and durable multi-zone solution without compromising on comfort or energy efficiency.

Take action with AirGreen

Contact us today for a personalized analysis , a detailed quote , and an HVAC installation tailored to your building. Our team will be happy to guide you toward the configuration that best meets your specific needs.