LG MULTI F MAX R32 7-Zone Heat Pump | 54,000 BTU Compressor

BROCHURE

A centralized HVAC solution designed for complex buildings in Quebec

In many high-end residential, multi-unit and light commercial building projects in Montreal , Laval , Longueuil , on the North Shore and the South Shore , one issue constantly arises: how to offer precise thermal comfort by zone , while avoiding the multiplication of outdoor units, electrical overload and aesthetic compromises?
At AirGreen , we encounter this problem every week in the field.

The LG MULTI F MAX R32 7-Zone Heat Pump – 54,000 BTU Compressor – was specifically designed to meet this type of need. It allows you to supply up to 7 separate zones (and even a maximum of 8 zones ) from a single outdoor unit, while maintaining independent comfort control in each space.

Why this multi-zone system is a real game-changer

One compressor, multiple controlled spaces

In an apartment building, an intergenerational home, or a commercial space with enclosed offices, heating requirements vary constantly:

• A south-facing dwelling overheats.

• Another one, on the ground floor, remains cooler.

• A computer office requires stable cooling even in winter.

The LG MULTI F MAX R32 allows each indoor unit to operate according to its own parameters, without affecting other zones. This true independence avoids the common compromises seen in poorly sized systems.

Space saving and preserved aesthetics

Reducing the number of outdoor units is a major advantage, especially in dense urban areas like Montreal or Longueuil . A single outdoor unit:

• simplifies architectural integration,

• reduces clutter on balconies, roofs or backyards,

• facilitates long-term HVAC maintenance.

In several recent projects on the South Shore , this feature has been crucial in obtaining approval from condominium associations.

Key technical specifications of the LG MULTI F MAX R32

Thermal performance adapted to the Quebec climate

This system offers a cooling capacity of 54,000 BTU and maintains reliable heating performance down to -16°C , an essential factor for the winters of Laval and the North Shore .

In real-world conditions, this means:

• stable heating during periods of moderate cold,

• a smooth transition between seasons,

• improved continuity of comfort without excessive reliance on supplementary systems.

Energy efficiency and precise control

Thanks to its advanced design:

• High SEER2 for seasonal air conditioning

• HSPF2 performs well in heating.

• COP optimized even at low temperatures.

These indicators translate concretely into controlled electricity consumption , a point often underestimated when selecting a multi-zone system.

R-32 refrigerant: a technical and environmental choice

R-32 gas offers several concrete advantages:

• better energy efficiency per load

• reduced environmental impact compared to older refrigerants,

• compatibility with current and future HVAC standards.

At our recent installations in Montérégie , this choice also facilitates long-term maintenance and regulatory compliance.

Installation flexibility: an underestimated advantage

Advanced pipe network management

The LG MULTI F MAX R32 allows:

• a total piping length of up to 475.7 feet ,

• significant differences in elevation between internal units,

• a great deal of freedom in the distribution of zones.

This flexibility is crucial in existing buildings, where mechanical pathways often need to adapt to the structure, and not the other way around.

At AirGreen, we installed this model in older buildings in East Montreal where architectural constraints made other solutions impractical. The system allowed for a clean integration, without major demolition.

Compatible with several types of indoor units

Depending on the needs of each area, it is possible to combine different models of LG indoor units:

• murals

• consoles,

• ceiling lights,

• ducted units.

This modularity allows for the optimization of comfort, aesthetics and the overall cost of the project.

Sound management: a critical point in multi-zone systems

In multi-unit housing projects, noise is one of the main sources of dissatisfaction after installation.
The LG MULTI F MAX R32 displays:

• a controlled external noise level (approximately 55 dB(A) ),

• indoor units can go down to 29 dB(A) depending on the model.

In a project completed in Boucherville , a landlord was concerned about complaints from noise-sensitive tenants. After installation, no negative feedback was reported, even during extended nighttime operation.

Power supply, protection and safety

This system operates on 220V , with:

• MCA: 34 A ,

• MOP: 40 A.

These values ​​must be strictly adhered to during installation. An incorrect electrical assessment can lead to:

• unintended triggering,

• premature wear of the compressor,

• non-compliance with standards.

At AirGreen, each project includes a complete electrical validation before installation, in coordination with partner master electricians.

Concrete cases observed in the field

6-unit apartment building – Laval

Objective: to replace six independent, noisy, and energy-intensive systems.
Solution: an LG MULTI F MAX R32 powering 6 wall units.
Result :

• Significant reduction in outside noise.

• improved comfort distribution

• Simplified HVAC maintenance for the homeowner.

Intergenerational housing – North Shore

Initial problem: opposing heating needs between the main residence and the secondary residence.
Solution: 5 independent zones on a single compressor.
Result: each space managed separately, without any conflicting settings.

Common mistakes to avoid with a multi-zone system

• Undersizing the total capacity for the sake of economy.

• Neglecting the actual distribution of charges by zone.

• Improvising the piping without respecting the maximum lengths.

• Entrusting the installation to a team without multi-zone experience.

These mistakes are costly in the long run. It is precisely to avoid them that AirGreen's field expertise makes the difference.

Why entrust this project to AirGreen?

At AirGreen , we don't just sell equipment. We:

• Let's analyze the building's structure,

• Let's validate the actual technical feasibility.

• Let's size each zone precisely.

• We ensure a compliant and durable HVAC installation.

Our experience on hundreds of projects in Montreal , Laval , Longueuil , North Shore and South Shore allows us to anticipate constraints before they become problems.

Conclusion and personalized support

The LG MULTI F MAX R32 7-Zone Heat Pump – 54,000 BTU is a coherent, high-performance, and structured solution for demanding projects where multi-zone management is not a luxury, but a necessity. Its flexibility, efficiency, and design make it a particularly relevant choice in the Quebec context.

Take the next step with AirGreen

For a detailed quote , feasibility analysis , or specific advice tailored to your building, contact AirGreen Air Conditioning & Heating directly. Our team will support you from the initial assessment through to after-sales service, with a clear, transparent, and professional approach.