LG MULTI F MAX R32 8-Zone Heat Pump | 54,000 BTU Compressor

BROCHURE

A multi-zone solution designed for complex buildings in Quebec

At AirGreen, we have been installing multi-zone HVAC systems for many years in a wide variety of settings: high-end single-family homes, duplexes and triplexes, multi-unit residential buildings, professional offices, and light commercial buildings in Montreal , Laval , Longueuil , and on the North and South Shores . The LG MULTI F MAX R32 8-Zone heat pump – 54,000 BTU – is specifically designed for these projects where a traditional central system cannot meet architectural, zoning, or energy efficiency requirements.

This model is based on a clear principle: a single powerful outdoor unit capable of powering up to eight independent indoor units , each with its own temperature control, airflow, and specific function. This approach eliminates the usual compromises associated with centralized systems while maintaining rigorous energy management.

Why the multi-zone concept is particularly relevant in Quebec

In our climate, heating and cooling needs vary greatly from room to room: a south-facing office in Boucherville , a two-story apartment in Laval , or even a renovated older building in Montreal never have uniform heat loads. The LG MULTI F MAX allows you to:

• to precisely adapt the power to each zone,

• to reduce unnecessary cycles,

• to optimize actual electricity consumption,

• to improve occupant comfort without oversizing.

We observe in the field that this type of system significantly reduces complaints related to temperature differences between rooms, particularly in multi-unit dwellings where each occupant has different expectations.

Key technical specifications of the 54,000 BTU compressor

The system is based on the LG KUMXB541A outdoor unit, equipped with a variable speed scroll compressor , known for its stability and longevity under partial load as well as full demand.

Among the most relevant technical data for a serious HVAC installation project:

• Cooling capacity : 54,000 BTU

• Heating capacity down to -16°C , with continued useful power output in winter conditions.

• R-32 refrigerant , more thermally efficient and with a reduced environmental impact

• High SEER2 , leading to lower operating costs over time

• MCA: 34 A / MOP: 40 A , facilitating electrical integration in many existing buildings

• Controlled outdoor noise level (55 dB(A)) , a crucial point in dense urban environments

These parameters allow for reliable integration in both residential and commercial settings, without compromising on electrical or acoustic compliance.

Complete flexibility in the choice of indoor units

One of the major advantages of the LG MULTI F MAX system lies in the diversity of compatible indoor units. At AirGreen, we configure each project to your specifications by combining, according to your needs:

• compact wall units for bedrooms and offices,

• Discreet ducted units for common areas

• consoles or ceiling lights in spaces with architectural constraints.

This freedom of configuration is essential in existing buildings in Longueuil or on the North Shore , where ceilings, load-bearing walls and air circulation often limit standard solutions.

Advanced airflow management and acoustic comfort

Each indoor unit operates independently, with:

• automatic control of vertical and horizontal shutters ,

• dynamic adaptation of airflow,

• indoor noise levels as low as 29 dB(A) depending on the model.

In the projects we undertake, particularly in multi-unit residential buildings in Montreal , this operational silence is a determining factor in long-term satisfaction.

Refrigeration system design and pipe lengths: a real asset in renovation

Unlike many more limited multi-zone systems, the LG MULTI F MAX allows for very generous pipe lengths:

• up to 475 ft in total equivalent length ,

• significant differences in elevation between indoor and outdoor units,

• precise management of the refrigerant charge.

This flexibility is particularly useful in multi-story buildings or conversion projects (e.g., a former commercial building converted into housing on the South Shore ). At AirGreen, we integrate these parameters from the design phase to avoid any long-term performance loss.

AirGreen Case Study: A Real-World Example in Multi-Dwelling Buildings

In a recent project in Laval , we installed an LG MULTI F MAX 8-zone system in a renovated six-unit apartment building. The challenges were numerous: limited exterior access, high acoustic requirements, and varying occupancy profiles. After commissioning:

• The measured energy consumption was lower than initial estimates.

• Each dwelling benefits from independent thermal control.

• no negative feedback related to noise or system stability after a full season.

This type of result illustrates why we prefer this model for complex projects.

Subsidies and energy efficiency

The LG MULTI F MAX R32 heat pump is eligible for certain provincial subsidies , including the LogisVert program, depending on the chosen configuration. At AirGreen, we systematically support our clients in Montreal , Laval , Longueuil , the North Shore , and the South Shore with:

• validation of eligibility,

• the preparation of the required documents,

• Optimizing the choice of units to maximize financial assistance.

This step is often overlooked elsewhere, even though it can represent a significant financial lever.

HVAC Installation: Why Expertise Makes All the Difference

A multi-zone system of this scale allows for no approximations. At AirGreen, every installation is carried out by certified refrigeration technicians , with:

• precise calculation of thermal loads,

• Strict adherence to LG requirements

• pressure tests, vacuuming and documented commissioning

• Post-installation support and real follow-up.

It is this rigor that guarantees the durability of the system and the stability of performance, year after year.

Who is the LG MULTI F MAX 8-Zones really aimed at?

This model is particularly suitable for:

• owners of multi-unit dwellings ,

• high-end homes with multiple comfort zones,

• professional offices and clinics,

• lightweight commercial projects requiring flexibility and efficiency.

It provides a credible alternative to cumbersome centralized systems, while offering much finer control.

Why entrust your project to AirGreen

Choosing AirGreen means ensuring:

• recognized local HVAC expertise ,

• clear and agreed-upon pricing before work begins,

• of an installation that meets the strictest standards,

• of an accessible and structured after-sales service.

We never propose a multi-zone system without a clear technical justification. Each project is thoroughly analyzed to guarantee a consistent, sustainable, and cost-effective result.

Conclusion

The LG MULTI F MAX R32 8-Zone heat pump – 54,000 BTU – represents a robust, flexible solution perfectly suited to the realities of Quebec buildings. When properly designed and installed, it offers a level of comfort and efficiency that is hard to beat.

To obtain a detailed quote , discuss your project, or validate the technical feasibility of your installation in Montreal , Laval , Longueuil , on the North Shore or South Shore , we invite you to contact AirGreen directly. Our team will be pleased to assist you with professionalism and transparency.