LG Multi F MAX LGRED R32 Heat Pump | 4 Heads at 48,000 BTU | Montérégie

BROCHURE

A multi-zone solution designed for the demanding buildings of the Montérégie region

At AirGreen , we have been installing HVAC systems for many years in a wide variety of settings: single-family homes, semi-detached houses, multi-unit residential buildings, and light commercial buildings. The LG Multi F MAX LGRED R32 heat pump with 4 indoor units and a nominal capacity of 48,000 BTU is perfectly suited to this regional reality: compartmentalized buildings, varying comfort needs in different areas, outdoor space constraints, and high energy requirements.

In the Montérégie region , we often encounter projects where a single outdoor unit needs to supply multiple spaces: ground floor and upper floor, enclosed offices, commercial spaces with technical areas, or even apartments where each occupant wants independent control. This is precisely the area where this advanced multi-zone system is ideally suited.

Multi F MAX LGRED Architecture: what truly distinguishes this system

An outdoor unit designed for intensive multi-zone use

The heart of the system is the LG Multi F MAX LGRED R32 outdoor unit – model KUMXA481A – capable of powering up to 8 indoor units , including 4 simultaneously in the configuration shown here. Unlike traditional residential multi-split systems, this platform originates from the light commercial sector, with:

• a variable-speed scroll compressor designed to operate over wide load ranges

• a much more precise electronic refrigerant management (EEV) system

• a high tolerance for pipe lengths and level differences between units

These features are essential in South Shore buildings, where pipe runs are rarely simple and the outdoor unit is not always installed directly behind each indoor head.

R-32 refrigerant: technical and regulatory choice

R-32 is not a marketing ploy for AirGreen; it's a logical technical choice. This refrigerant offers:

• improved thermodynamic efficiency compared to R-410A

• a lower total load for the same capacity

• a reduced global warming potential (GWP) , in line with regulatory guidelines in Quebec

In our facilities in Montérégie , this point is particularly relevant for new or renovated buildings aiming for better overall energy performance.

Indoor units: adapt each zone to its actual use

A full range of power outputs

One of the major advantages of the LG Multi F MAX is the flexibility in choosing indoor units. Depending on the configuration selected, we can install wall-mounted units of:

• 9,000 BTU

• 12,000 BTU

• 14,300 BTU

• 18,000 BTU

This allows for precise adjustment of capacity for each room: bedroom, office, open-plan area, retail space, or meeting room. In practice, this approach avoids two common errors that we often correct in existing systems:

• Oversizing , a source of discomfort and short cycles

• Undersizing , which forces the device to operate continuously

Acoustic comfort and air diffusion

The wall units compatible with this system are designed to operate quietly , even under partial load. In residential projects in the Montérégie region , this is a key criterion, particularly for:

• bedrooms

• home offices

• care or consultation areas

Automatic control of the shutters (horizontal and vertical) allows for homogeneous air distribution, limiting localized cold or hot zones.

Heating performance: a crucial point for Quebec's climate

Reliable heating in cold weather

The LG Multi F MAX LGRED is designed to maintain stable heating capacity down to -25°C , which corresponds to the climatic realities of the Montérégie region . In our projects, this translates to:

• a primary heating system for many buildings

• a marked reduction in the use of backup systems

It is important to point out that, on this type of advanced multi-zone system, seasonal performance indicators must be interpreted correctly: the priority is capacity stability and intelligent load management , rather than isolated theoretical figures.

Real example in Montérégie

During a recent installation in a multi-unit residential building in Saint-Jean-sur-Richelieu , we replaced several independent systems with an LG Multi F MAX 48,000 BTU unit with four separate zones. Results observed after a full season:

• stable temperature in each dwelling

• Significant reduction in service calls

• better control of energy costs for the owner

HVAC Installation: Why Expertise Makes All the Difference

Piping and bypass unit management

This type of system requires advanced expertise in HVAC installation :

• compliance with maximum pipe lengths

• managing height differences between units

• correct installation of distribution units (BDUs) when required

At AirGreen, our refrigeration technicians plan each piping network before even arriving on site. This preparation significantly reduces the risk of imbalances between zones and guarantees long-lasting performance.

Common mistakes to avoid

We regularly work on poorly installed multi-zone systems. The most common problems are:

• Inadequate choice of power levels per zone

• non-optimized pipe lengths

• lack of reflection on the future evolution of the building

An improperly sized LG Multi F MAX loses many of its advantages. That's why we always insist on a complete analysis before any installation in Montérégie , the South Shore , or the North Shore .

LogisVert subsidy: an important financial lever

At the time of writing, this system is eligible for a provincial LogisVert grant of up to $4,200 , depending on the final configuration and building type. For many projects in the Montérégie region , this financial assistance makes a real difference in the decision to invest in a high-quality, multi-zone system.

We systematically support our clients in:

• eligibility verification

• the preparation of the required documents

• the technical conformity of the installation

Why choose AirGreen for this LG system?

Choosing an LG Multi F MAX LGRED R32 is an important technical decision. Choosing AirGreen to install it is just as important. Our customers trust us for:

• our field experience in multi-zone HVAC

• our ability to operate in Montérégie , Montreal , Laval , Longueuil , South Shore and North Shore

• the transparency of our recommendations and our offers

Each project is treated as a bespoke system, never as a simple standard installation.

A solution truly suited to today's buildings

The LG Multi F MAX LGRED R32 heat pump – 4 heads, 48,000 BTU – is designed for homeowners and managers looking for:

• maximum flexibility per zone

• proven reliability in cold climates

• a scalable HVAC solution, capable of adapting to future changes

In Montérégie , it is one of the most coherent systems for combining comfort, performance and control.

Contact AirGreen

For a complete analysis , a detailed quote , or a technical visit , contact AirGreen Heat Pumps, Air Conditioning & Heating . We will guide you toward the configuration best suited to your building and your energy objectives.