LG Multi F MAX LGRED R32 Heat Pump | 3 Heads at 48,000 BTU | Montérégie

A multi-zone HVAC solution designed for residential and multi-unit dwellings in the Montérégie region

At AirGreen, we have been installing multi-zone HVAC systems for many years in a wide variety of settings: single-family homes, duplexes, triplexes, apartment buildings, professional offices, and light commercial spaces. The LG Multi F MAX LGRED R32 – 48,000 BTU heat pump with 3 heads is one of the solutions we recommend when needs are complex, areas are large, and expectations are high for comfort, reliability, and zone control.

This system is based on an LG KUMXA481A outdoor unit, capable of powering up to 8 indoor units while maintaining excellent thermal stability, even in Quebec winter conditions. In the Montérégie region, where seasonal temperature variations are significant, this capacity is not theoretical: it translates into concrete and measurable performance in the field.

A Multi F architecture designed for the true flexibility of buildings

Unlike simple wall-mounted systems, LG Multi F MAX technology enables intelligent distribution of heating and cooling to multiple independent zones. Each equipped room has its own control, without compromising overall power or system stability.

In the projects we undertake in Longueuil, Brossard, Saint-Hubert, Chambly, Saint-Jean-sur-Richelieu, and throughout the South Shore , this flexibility is crucial. It allows, for example:

• to intensely heat a ground floor with many windows while maintaining a moderate temperature upstairs;

• to offer individualized comfort in intergenerational housing;

• to distribute the heat load without multiplying the number of visible or noisy outdoor units.

The KUMXA481A outdoor unit accepts a significant total piping length, with significant elevation differences between units, which facilitates integration into existing or renovated buildings, even when the configuration is restrictive.

Actual heating and air conditioning performance

In practice, this system is appreciated for its consistency. The nominal cooling capacity reaches 48,000 BTU , while the heating performance remains stable down to -25°C , a threshold perfectly suited to the winters of the Montérégie region.

During our installations, we pay particular attention to:

• a gradual temperature increase, without sudden jolts;

• efficient defrosting management, limiting unnecessary cycles;

• stable energy efficiency, even when multiple zones simultaneously demand power.

The variable-speed scroll compressor, combined with advanced electronic management of R-32 refrigerant flow, optimizes energy consumption without compromising comfort. Even at -8°C , significant power output remains available, preventing the need for premature use of supplementary heating sources.

Choosing R-32 refrigerant: a technical and environmental advantage

The R-32 gas used in this LG heat pump offers several tangible advantages for our customers:

• lower global warming potential than previous generations;

• best thermal efficiency per unit load;

• lower refrigerant volumes for the same capacity.

In a context where environmental standards are evolving rapidly in Quebec, this choice ensures better sustainability of the installation and increased compatibility with future HVAC installation requirements.

The indoor units: comfort, silence and precise control

The 3-head configuration can be achieved with several compatible LG wall-mounted models, ranging from 9,000 to 18,000 BTU , depending on the needs of each room. In AirGreen projects, we always select the combination after a rigorous thermal analysis.

These units are distinguished by:

• a very low noise level , particularly appreciated in bedrooms and home offices;

• automatic control of horizontal and vertical flaps, ensuring homogeneous air distribution;

• efficient filtration, including washable micro-dust filters.

Wi-Fi is included , allowing remote management via the LG app, an advantage often sought by multi-unit owners or property managers.

Installation in the Montérégie region: what we do differently at AirGreen

Installing a multi-zone heat pump of this size is not something to be taken lightly. At AirGreen, every project begins with a detailed assessment:

• calculation of thermal loads room by room;

• validation of piping routes and structural constraints;

• electrical panel analysis (220 V, MCA 34 A , MOP 40 A ).

Over the years, we've learned that most problems with multi-zone systems stem not from the equipment itself, but from inadequate design or installation. That's why our certified refrigeration technicians pay close attention to network balancing, pipe insulation, and complete system commissioning.

LogisVert subsidy: an important financial lever

This heat pump is eligible for the LogisVert provincial subsidy , with an amount of up to $4,200 , depending on the configuration and location. For our clients on the South Shore and in the Montérégie region , we handle all the administrative procedures to simplify the process and ensure compliance.

Real-life example: a triplex in Longueuil

We recently installed an LG Multi F MAX 48,000 BTU in a triplex in Longueuil. The owner wanted to replace three old, independent systems with a centralized, more discreet, and more efficient solution. The result:

• a single outdoor unit on the ground, well integrated;

• three perfectly balanced zones;

• a significant reduction in electricity consumption from the first winter onwards.

This type of feedback from the field confirms the relevance of this system when the project is well designed and executed.

Guarantee and peace of mind

The LG Multi F MAX heat pump is covered by a 10-year warranty on the compressor and parts . Labor is covered for 6 years, straight from the distributor, and extended warranty options are available as needed. At AirGreen, our support doesn't end with installation: HVAC maintenance , diagnostics, and after-sales service are integral parts of our approach.

Why choose AirGreen for this system?

• recognized expertise in multi-zone HVAC installation in Montreal, Laval, Longueuil, North Shore and South Shore;

• experienced and certified refrigeration technicians;

• transparent pricing, no surprises;

• $5M liability insurance;

• Comprehensive support, from design to maintenance.

Contact AirGreen

If you're considering installing an LG Multi F MAX LGRED R32 – 48,000 BTU heat pump in the Montérégie region or elsewhere on the South Shore , our team is available for a detailed assessment and a personalized quote. Contact us today to discuss your project and get a solution truly tailored to your building.

Warranty: 10 years on the compressor, 10 years on parts and 6 years on labor, straight from the distributor.