LG MULTI F MAX R32 6-Head Heat Pump | 60,000 BTU Compressor
The LG Multi F Max R32 60 000 multi-zone heat pump heats and cools 6 rooms with a single outdoor unit. it delivers 42,000 BTU/h at −8 °C, heats down to −16 °C and qualifies for a $2,100 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
6 rooms, one outdoor unit.
Compared with the 19 multi-zone systems of 60,000 BTU we sell. Every number on this page carries its source.
The parts that make a multi-zone system.
Tap a part to learn more.
Outdoor unit
One compressor for the whole house. It supplies up to 8 heads and modulates from 12,420 to 56,500 BTU/h depending on what the rooms call for (NEEP).
Base pan heater
A heater keeps the outdoor unit’s base pan free of ice below 1 °C and during defrost (NEEP).
Refrigerant lines
One pair of lines per head.
Indoor heads
One head per room, each with its own remote and temperature. The combination is chosen in the “Zones” menu.
Control
Each zone is set separately, also from your phone.
Turn rooms on and off. Watch the power being shared.
One outdoor unit supplies every head: when several rooms call at once, they share its capacity. Pick an outdoor temperature.
Tell us your rooms. We tell you if this size is enough.
Pick the number of rooms and their size. The estimate targets a −15 °C day; it is a guide, the real calculation is done room by room at your home.
The whole series at a glance: find the box that fits you.
Each box is a product: the outdoor unit’s size, and the number of heads.
At −15 °C, it still delivers 76 % of its rated capacity.
Tap a temperature: certified capacity, efficiency and the cost of one hour of heating.
It slows down, it speeds up: the certified modulation range
Light bar: from minimum to maximum capacity. Dark mark: the rated value.
At every temperature, cheaper than baseboards.
Cost of one hour at full output, for the same heat delivered. Hydro-Québec Rate D, second tier: 11.142 ¢/kWh.
The official ratings, on the same scales as before.
SEER2, HSPF2 and EER2 come from the AHRI certification. The mark shows the median of the same-size multi-zone systems we sell.
A grant you can calculate, not guess.
The capacity at −8 °C comes from Hydro-Québec’s list of October 1, 2026. $50 per 1,000 BTU/h is the rate for ENERGY STAR heat pumps (guide v1.10).
Where it ranks among same-size multi-zone systems.
Compared with the 19 multi-zone systems of 60,000 BTU we sell, using the LogisVert list figures. Weaknesses too, said plainly.
One multi-zone or several wall units? Both sides, honestly.
We compare both options on your floor plan during the estimate.
What to know before installing a multi-zone system.
Dimensions, wiring and lines, drawn. Then our six steps.
The outdoor unit, dimensioned
One circuit for the whole house
Published sound levels, on one scale.
We use the outdoor figure to choose where the unit goes.
What is particular about this machine.
Only facts published by ENERGY STAR, NEEP or the manufacturer.
Every number, and where it comes from.
Each line carries its source; a line with no published value is not shown.
The manufacturer’s documentation, as PDF.
Everything we have written about this system.
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:
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Improved heat transmission
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More stable operating cycles
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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:
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COP in air conditioning (nominal conditions): 3.52
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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:
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KNUAK091A, KNUAK121A
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KNUAB091A, KNUAB121A
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KNMAB151A, KNMAB241A
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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:
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Total (equivalent) piping length up to 475.7 ft
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Maximum length of the main line (outdoor unit to distribution) up to 180.4 ft
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Total branch length (distribution to indoor units) up to 295.3 ft
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Level difference between outdoor unit and indoor units up to 98.4 ft
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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:
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MOP: 40 A
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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:
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Improved temperature stability between dwellings
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A reduction in service interventions (fewer separate systems to manage)
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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:
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A careful analysis of the building's actual needs
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A mastery of electrical and mechanical standards
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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, with 6 years on labor straight from the distributor, 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.
Warranty: 10 years on the compressor, 10 years on parts and 6 years on labor, straight from the distributor.
What people ask us about multi-zone systems.
Can I heat one room and cool another at the same time?
No. On a multi-zone system like this one, every head works in the same mode, heating or cooling. Each room still keeps its own set temperature.
What happens when every room calls for heat?
They share the outdoor unit’s capacity: 42,000 BTU/h at −8 °C, 46,000 at −15 °C.
How many heads can I connect?
Up to 8 on this outdoor unit. This product is configured for 6 heads.
How much is the LogisVert grant?
$2,100 according to Hydro-Québec’s list of October 1, 2026. The grant never exceeds 100 % of the cost before taxes; apply within 9 months of installation.
Is it ENERGY STAR certified?
Yes, ID 3621277. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −16 °C.
Is it noisy?
Indoors, the reference head goes down to 29 dB(A). Outdoors, 58 dB(A): we place the unit away from bedroom windows.
Why a multi-zone instead of several wall units?
One outdoor unit on the wall and one circuit. In return, the rooms share the capacity, and if the outdoor unit stops, every zone stops.
What does the warranty cover?
Our sheet lists 10 years on the compressor and 10 years on parts. AirGreen extended warranty: possible.
A multi-zone system is planned room by room. At your home.
We measure every room, draw the line route and choose the right head for each zone. The on-site estimate is free and the quote arrives within 24 h.