LG Multi F MAX LGRED R32 Heat Pump | 7 Heads at 48,000 BTU | Montérégie

BROCHURE

A multi-zone solution designed for complex buildings in Quebec

At AirGreen, we install HVAC systems in situations where a standard wall-mounted heat pump quickly reaches its limits: large residences, multi-unit buildings, commercial spaces with several distinct thermal zones, or buildings undergoing phased renovations. The LG Multi F MAX LGRED R32 heat pump with 7 heads and a capacity of 48,000 BTU is perfectly suited to this reality.

This multi-zone system allows up to seven independent indoor units to be powered by a single outdoor unit, while maintaining precise temperature control, excellent winter heating stability, and unparalleled installation flexibility. In the Montérégie region , as well as in Montreal , Laval , Longueuil , and on the North and South Shores , we deploy this type of solution when technical requirements and the desired comfort level justify a lightweight, commercial-grade system.

Why a Multi F MAX system rather than several individual heat pumps?

In many projects, the initial reaction is to multiply the number of external units. However, this approach often leads to:

• a visual saturation of the facades or rear courtyards

• heavier electrical constraints

• a more complex acoustic management

• more dispersed maintenance

The LG Multi F MAX LGRED R32 heat pump addresses these challenges by centralizing heat production while maintaining complete independence for each indoor zone . Each wall-mounted unit, console, or ducted unit operates according to the actual needs of its space, without impacting other zones.

At AirGreen, we have installed this type of configuration in triplexes in Longueuil , intergenerational homes in Montérégie , as well as in light commercial buildings in Montreal East , where limiting the number of outdoor units was a key criterion.

Technical architecture and installation flexibility

An outdoor unit designed for the Quebec climate

The KUMXA481A outdoor unit is designed to operate efficiently in heating mode down to -25°C , a critical threshold for Quebec winters. Unlike many older multi-zone systems, this generation maintains usable capacity even during prolonged periods of cold, thus reducing the need for backup systems.

In practice, this means:

• improved thermal stability in areas far from the building

• fewer aggressive defrost cycles

• more gradual mechanical wear

R-32 refrigerant: a technical and regulatory choice

The choice of R-32 is not insignificant. This refrigerant allows for:

• a reduced total charge compared to R-410A

• better heat transfer

• a lower global warming potential

For building owners in Montérégie and on the South Shore , this represents an investment more aligned with current environmental guidelines, without compromising on actual heating, HVAC and air conditioning performance.

Advanced pipe length management

A major advantage of the Multi F MAX system lies in its high tolerance for refrigerant line lengths and elevation changes. This characteristic is crucial in:

• multi-story buildings

• renovations where the outdoor unit needs to be located far away

• buildings with centralized technical facilities

At AirGreen, we systematically integrate this data from the design phase in order to avoid common mistakes: yield losses, imbalances between zones or long-term maintenance constraints.

Indoor units: adapt each zone to its actual use

The LG Multi F MAX LGRED R32 heat pump is compatible with several LG indoor unit models, ranging from 9,000 to 18,000 BTU . This modularity allows for precise adjustment of each zone according to:

• the actual volume of the room

• his exhibition

• its use (bedroom, living room, office, shop)

In a recent project in Boucherville , for example, we combined:

• quieter units for bedrooms

• higher airflow units for common areas

• a balanced distribution avoiding any unnecessary over-dimensioning

This approach improves comfort, but also reduces annual electricity consumption.

Acoustic comfort and quality of life

An often underestimated aspect of multi-zone systems is perceived noise , both indoors and outdoors. The LGRED Multi F MAX is designed to maintain low noise levels, even when multiple zones are simultaneously requiring heating or cooling.

At AirGreen, we pay particular attention to:

• the exact location of the outdoor unit

• vibrational transmission to the structure

• the choice of supports and insulation

This rigor is essential, particularly in the dense neighborhoods of Montreal and Laval , where acoustic constraints are an integral part of the project.

LogisVert subsidy and profitability analysis

This system is eligible for the LogisVert provincial grant , with an amount of up to $4,200 , depending on the final configuration and applicable criteria. For many clients in the Montérégie region and on the South Shore , this financial assistance makes a real difference in their decision to opt for a superior multi-zone system.

At AirGreen, we systematically integrate:

• the analysis of eligibility

• Optimizing the configuration to maximize the subsidy

• administrative support

This allows the client to focus on the technical choice, without unnecessary complexity.

Common mistakes we intentionally avoid

Our field experience has taught us that multi-zone systems are particularly susceptible to design flaws. Among the most common are:

• overloading the outdoor unit with improperly sized heads

• neglecting the balancing of pipe lengths

• ignore the actual electrical constraints of the building

At AirGreen, every multi-zone heat pump project begins with a detailed analysis of the building, its uses, and its future constraints. This proactive approach explains why our installations age better and maintain their performance over time.

Why entrust this type of project to AirGreen?

Installing an LG Multi F MAX LGRED R32 heat pump | 7 heads | 48,000 BTU is not a standard installation. It is a structured HVAC project requiring:

• advanced technical expertise

• a mastery of electrical and refrigeration standards

• a long-term vision for the maintenance and evolution of the building

At AirGreen, our refrigeration technicians work daily on this type of system in Montreal , Laval , Longueuil , on the North Shore , the South Shore , and in the Montérégie region . This hands-on experience results in consistent, durable installations adapted to the realities of Quebec.

Conclusion

The LG Multi F MAX LGRED R32 heat pump with 7 heads at 48,000 BTU is an excellent choice for demanding homeowners looking for a high-performance, scalable HVAC system well-suited to Quebec's harsh winters.

For a personalized analysis, a detailed estimate, or to check your eligibility for the LogisVert grant , contact AirGreen directly. Our team will support you every step of the way, from design to installation, with the meticulous attention to detail for which we are known.