LG MULTI F MAX R32 4-Head Heat Pump | 60,000 BTU Compressor

A multi-zone HVAC solution designed for complex buildings in Greater Montreal

At AirGreen Air Conditioning & Heating , we have been installing HVAC systems for over 15 years in real-world settings: single-family homes, duplexes, multi-unit buildings, commercial properties, and mixed-use buildings in Montreal , Laval , Longueuil , and on the North and South Shores. The LG MULTI F MAX R32 4-Head Heat Pump | 60,000 BTU Compressor is one of the systems we recommend when the building configuration requires precise control of multiple zones, without compromising on performance, reliability, or durability.

This system is not intended for simple projects. It is designed to address realities we encounter daily in the field: existing buildings that are difficult to modify, different comfort needs depending on the floor, electrical constraints, significant distances between units, and high expectations for energy efficiency.

A multi-zone architecture designed for real life

Independent management of up to 4 zones (and more)

The LG MULTI F MAX R32 allows you to power 4 separate zones from a single outdoor compressor, with a maximum capacity of up to 8 indoor units depending on the configuration and accessories required. In practical terms, this means:

• Independent temperature control in each dwelling or room

• Reduced external footprint (single condenser)

• Total flexibility in the choice of indoor units (wall-mounted, console, ducted, ceiling-mounted)

For example, in projects in Longueuil and Laval , we used this type of architecture to serve:

• A commercial ground floor

• Two residential apartments upstairs

• A basement converted into an office

Each zone had its own schedules, uses and comfort expectations, without interference between them.

Real, measurable, and usable power

When we talk about a "60,000 BTU" system, the important question is: how does the capacity perform in the real world , when multiple zones require heating or cooling at the same time?

On this model, the nominal capacity is around 56,000 BTU/h in cooling mode (with a range of approximately 10,800 to 65,000 BTU/h depending on demand and conditions). In heating mode, the nominal capacity is around 64,000 BTU/h , with a maximum that can reach approximately 68,000 BTU/h under certain conditions.

For Quebec, the points of primary interest to us are the maximum heating capacities based on the outside temperature. For reference:

• Maximum heating capacity at 17°F (≈ -8°C) : 56,500 BTU/h

• Maximum heating capacity at 5°F (≈ -15°C) : 52,500 BTU/h

• Maximum heating capacity at -4°F (≈ -20°C) : 45,200 BTU/h

These figures are useful for realistically sizing a multi-zone project, especially when taking into account heat loss, occupancy and comfort habits.

Choosing R-32 refrigerant: a concrete, not theoretical, advantage

R-32 gas represents a major evolution in HVAC today:

• Reduced environmental impact compared to R-410A

• Better heat transfer

• Lower quantity of refrigerant required

• Compatibility with future standards

For homeowners in Montreal and the Montérégie region who are planning their HVAC investments over 15 to 20 years, this point is crucial. Installing an R-32 system today reduces the risk of regulatory obsolescence while optimizing energy efficiency right now.

Note: The outdoor unit's refrigerant charge is around 9.26 lb , which has a direct impact on the installation method, line lengths, and the accuracy of leak and commissioning tests.

Controlled energy performance and operating costs

To avoid common (and widespread on the web) errors, we favor indicators that are clearly stated in the technical documentation and are easy to interpret.

This model includes, in particular:

• COP air conditioning (at 95°F, nominal condition) : approximately 3.52

• Heating COP (at 47°F, nominal condition) : approximately 3.45

In practical terms, this means that under standardized test conditions, the system delivers several kW of heat (or cold) for every kW of electricity consumed. In real-world conditions, efficiency varies depending on:

• The number of simultaneously active zones

• The outside temperature

• The quality of the sizing (load distribution by zone)

• The quality of the installation (piping, drainage, wiring, configuration)

In several multi-unit buildings where we replaced old electric or oil-fired systems, owners have seen a measurable reduction in operating costs , but above all, a stability of comfort: fewer "rooms too hot" or "rooms too cold", and better control of heating and air conditioning schedules.

Installation flexibility that is rarely matched

Pipe lengths and elevation changes adapted to existing buildings

In Greater Montreal, the reality is often this: people want a single outdoor unit, but the indoor units are scattered (backyard, roof, stairwell, extension, etc.). This is precisely where this type of multi-zone platform makes sense.

The system design allows for:

• Up to 475.7 ft total piping length (equivalent)

• Up to 180.4 ft for the main section (depending on configuration)

• The maximum elevation difference between the outdoor and indoor units can be approximately 98.4 ft (depending on the scenario).

These features are essential in Montreal 's older buildings, where architectural constraints often limit installation options. In our projects, this translates into smarter routing plans, better-positioned drilling, and improved aesthetic integration, without sacrificing performance.

Operating range useful in Quebec

Another concrete point: the announced operating range.

• In air conditioning , the temperature is generally around 14°F to 118°F (≈ -10°C to 48°C)

• In heating mode , the temperature is generally around -4°F to 64°F (≈ -20°C to 18°C)

These benchmarks help to understand what the system can do stably, and what strategy to plan (e.g. peak management, zone allocation, usage advice) in a multi-zone building.

Silence and acoustic comfort

Comfort isn't just about temperature. This system provides consistent sound cues with a multi-fan outdoor unit:

• The indicated outdoor noise level is around 56 to 58 dB(A) (depending on test conditions).

In a dense urban context, particularly on the South Shore and in the central districts of Montreal , these sound levels allow for discreet integration, especially when intelligent implementation is added: clearances, anti-vibration support, orientation and management of reverberation on the walls.

Built-in Wi-Fi and smart control

The included Wi-Fi allows:

• Remote control of areas

• The precise adjustment of schedules

• Better management of energy consumption

At AirGreen, we systematically configure these functions during installation and explain to customers how to use them effectively, based on their actual habits. With a multi-zone system, this quickly becomes a financial advantage: heating "everywhere all the time" costs more than heating according to actual occupancy.

Subsidies, compliance, and peace of mind

This model is eligible for the $2,100 LogisVert grant (updated November 26, 2025), subject to proper installation. We cover:

• Validation of eligibility

• Electrical compliance (220 V, MCA ~33.3 A , MOP 40 A )

• Documents required for provincial programs

Our team ensures that every installation complies with current HVAC and electrical standards, without compromise.

Why entrust this project to AirGreen?

Installing a multi-zone heat pump of this type requires expertise. At AirGreen , we provide:

• Field expertise on complex projects

• Certified refrigeration technicians , trained on LG systems

• $5M liability insurance

• Transparent pricing , confirmed before work begins

• A structured and responsive after-sales service

Through our installations in Laval , Longueuil, and the Montérégie region , we've learned that the success of a multi-zone system depends as much on design as on execution. Poor load distribution, an incorrect choice of indoor units, or inaccurate management of pipe lengths can negatively impact overall performance. This is precisely where our experience makes a difference.

A solution truly suited to demanding residential and commercial projects

The LG MULTI F MAX R32 4-Head Heat Pump | 60000 BTU Compressor is for homeowners and managers looking for:

• A sustainable HVAC solution

• Precise management of areas

• A balance between performance, silence and flexibility

This is not a standard system. It is a long-term comfort management tool, designed for real buildings, in a real climate.

Need a precise analysis for your building?

At AirGreen Air Conditioning & Heating , we take the time to evaluate your project as a whole: building configuration, space usage, technical constraints, and energy objectives. Contact us now for a detailed quote, a multi-zone analysis, or personalized advice for your HVAC project in Montreal , Laval , Longueuil , on the North Shore , or the South Shore .

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