LG Multi F MAX LGRED R32 Heat Pump | 2 Heads + 36000 BTU | Montérégie
The LG Multi F Max LGRED R32 36 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. it delivers 29,600 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $3,552 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
2 rooms, one outdoor unit.
Compared with the 141 multi-zone systems of 36,000 BTU we sell. Every number on this page carries its source.
The parts that make a multi-zone system.
Tap a part to learn more.
Outdoor unit
One compressor for the whole house. It supplies up to 5 heads and modulates from 12,420 to 49,600 BTU/h depending on what the rooms call for (NEEP).
Base pan heater
A heater keeps the outdoor unit’s base pan free of ice below 1 °C and during defrost (NEEP).
Refrigerant lines
One pair of lines per head.
Indoor heads
One head per room, each with its own remote and temperature. The combination is chosen in the “Zones” menu.
Control
Each zone is set separately, also from your phone.
Turn rooms on and off. Watch the power being shared.
One outdoor unit supplies every head: when several rooms call at once, they share its capacity. Pick an outdoor temperature.
Tell us your rooms. We tell you if this size is enough.
Pick the number of rooms and their size. The estimate targets a −15 °C day; it is a guide, the real calculation is done room by room at your home.
The whole series at a glance: find the box that fits you.
Each box is a product: the outdoor unit’s size, and the number of heads.
At −15 °C, it still delivers 115 % of its rated capacity.
Tap a temperature: certified capacity, efficiency and the cost of one hour of heating.
It slows down, it speeds up: the certified modulation range
Light bar: from minimum to maximum capacity. Dark mark: the rated value.
At every temperature, cheaper than baseboards.
Cost of one hour at full output, for the same heat delivered. Hydro-Québec Rate D, second tier: 11.142 ¢/kWh.
The official ratings, on the same scales as before.
SEER2, HSPF2 and EER2 come from the AHRI certification. The mark shows the median of the same-size multi-zone systems we sell.
A grant you can calculate, not guess.
The capacity at −8 °C comes from Hydro-Québec’s list of October 1, 2026. $120 per 1,000 BTU/h is the rate for ENERGY STAR cold-climate heat pumps (guide v1.10).
Where it ranks among same-size multi-zone systems.
Compared with the 141 multi-zone systems of 36,000 BTU we sell, using the LogisVert list figures. Weaknesses too, said plainly.
Against three other brands in its class.
Same rated size, other manufacturers. Pick the opponent.
One multi-zone or several wall units? Both sides, honestly.
We compare both options on your floor plan during the estimate.
What to know before installing a multi-zone system.
Dimensions, wiring and lines, drawn. Then our six steps.
The outdoor unit, dimensioned
One circuit for the whole house
Published sound levels, on one scale.
We use the outdoor figure to choose where the unit goes.
What is particular about this machine.
Only facts published by ENERGY STAR, NEEP or the manufacturer.
Every number, and where it comes from.
Each line carries its source; a line with no published value is not shown.
The manufacturer’s documentation, as PDF.
Everything we have written about this system.
A multi-zone solution designed for the residential and multi-unit realities of the Montérégie region
At AirGreen Heat Pumps, Air Conditioning & Heating , we have been installing multi-zone systems for many years in a wide variety of settings: single-family homes, duplexes, triplexes, new condos, major renovations, and multi-unit buildings. The LG Multi F MAX LGRED R32 | 2 Heads + 36,000 BTU Heat Pump is one of the solutions we recommend when flexibility, winter performance, and precise comfort control are top priorities, particularly in the Montérégie region , Longueuil , the South Shore , and as far north as the South Shore .
This system is based on a simple logic: a high-performance outdoor unit capable of powering several independent indoor units, while maintaining excellent energy efficiency, even during periods of intense cold typical of the Quebec climate.
Understanding the Multi F MAX architecture: why this system stands out
The LG Multi F MAX LGRED R32 is not a typical wall-mounted heat pump. It is an advanced multi-zone system, designed to distribute heating and cooling power precisely where it is needed.
A robust and intelligent outdoor unit
The KUMXA361A outdoor unit offers a nominal capacity of 36,000 BTU , with an operating range that remains stable down to -25°C in heating mode . In practice, this means the system continues to provide reliable comfort even during the prolonged cold spells we regularly experience in Montreal , Laval , Longueuil , and the Montérégie region .
Thanks to LGRED technology combined with R-32 gas , this heat pump offers:
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Improved seasonal energy efficiency
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A reduction in the environmental burden
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Increased performance stability in extreme conditions
The electrical parameters, current management (MCA 33 A, MOP 40 A) and internal design are suitable for serious residential installations, without compromising on safety or durability.
Two zones today, up to five tomorrow
Although this configuration is shown with 2 indoor units , the system allows for up to 5 zones in total. This scalability is particularly advantageous in projects where:
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A renovation is planned in several phases
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A basement or secondary dwelling will be created at a later date.
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The owner wants to maintain room for expansion.
We have installed this type of configuration in several properties on the South Shore , where needs are evolving rapidly with family or rental projects.
Indoor units: targeted comfort, precise control
One of the major advantages of a multi-zone system lies in the independent management of each space . Compatible indoor units (including the KNUAK , KNUAB and KNMAB series) allow the power, airflow and airflow direction to be adapted according to the actual use of each room.
A comfort that is noticeable on a daily basis
In the residences we have equipped in Boucherville , Saint-Hubert and Saint-Lambert , the occupants quickly notice:
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A more stable temperature
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Fewer abrupt variations between rooms
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A reduction in overheated or underheated areas
The internal noise level , which can go down to around 29 dB(A) depending on the model chosen, makes these units perfectly suited for bedrooms, home offices and open living spaces.
Air direction and diffusion quality
Automatic motorized louvers , both horizontal and vertical, ensure even air distribution. This limits direct drafts, an often overlooked but essential point for real comfort, especially during prolonged heating.
Energy efficiency: beyond the numbers, real savings
The seasonal efficiency values announced for this system are high, but at AirGreen , we always insist on the concrete interpretation of this data.
What this means for a homeowner in Montérégie
In real-world projects that we have followed over several heating seasons:
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Electricity consumption is more stable
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Demand peaks are better controlled.
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Comfort is maintained without frequent recourse to supplementary sources
The high COP at -8°C indicates the system's ability to produce more heat per kilowatt consumed, even when the outside temperature drops. This is a key factor for homeowners concerned about their long-term operating costs.
HVAC installation: a determining factor often underestimated
A system like the LG Multi F MAX LGRED R32 doesn't tolerate approximations. The quality of the HVAC installation directly influences the performance, reliability, and lifespan of the equipment.
Refrigeration network management
Adherence to maximum pipe lengths, permitted elevation differences, and refrigerant distribution is essential. In multi-story buildings or multi-unit dwellings, we pay particular attention to:
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The location of the outdoor unit
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The routing of the main and secondary pipes
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Reducing pressure losses
These elements are crucial to ensuring that each indoor unit receives the intended capacity, without imbalance.
An approach tailored to each building
Every installation we carry out in Montreal , Laval , Longueuil , or on the South Shore begins with a precise analysis of heating and cooling needs, building configuration, and occupancy patterns. This approach allows us to fully exploit the potential of an advanced multi-zone system.
Concrete scenarios encountered by AirGreen
Intergenerational home in Longueuil
In a residence comprising a main dwelling and an intergenerational space, the LG Multi F MAX enabled:
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Independent control of the two areas
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A reduction in comfort conflicts between occupants
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Simplified HVAC maintenance
Renovated duplex in Montérégie
For a renovated older duplex, choosing a multi-zone system avoided the installation of multiple outdoor units, improving both aesthetics and municipal compliance.
LogisVert subsidy and energy compliance
This model is eligible for the LogisVert provincial subsidy , with an amount of up to $3,552 depending on the applicable conditions. We systematically support our clients in:
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Validation of eligibility
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Preparing the required documents
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Compliance with technical requirements
Why entrust your project to AirGreen
Choosing AirGreen means benefiting from:
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With recognized expertise in multi-zone HVAC installation
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Transparent pricing , confirmed before work begins
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Certified refrigeration technicians experienced with advanced LG systems
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$5 million in liability insurance
Our field experience allows us to anticipate real constraints and avoid costly mistakes that we see too often on poorly planned multi-zone installations.
Conclusion
The LG Multi F MAX LGRED R32 | 2 Heads + 36,000 BTU Heat Pump represents a high-level solution for homeowners in Montérégie , Montreal , Laval , Longueuil , the North Shore and the South Shore who are looking for a reliable, scalable system perfectly suited to the Quebec climate.
For a detailed quote , a personalized analysis , or advice on integrating this system into your property, contact AirGreen Heat Pumps, Air Conditioning & Heating directly. Our team will be happy to assist you at every stage of your HVAC project.
Warranty: 10 years on the compressor, 10 years on parts and 6 years on labor, straight from the distributor.
What people ask us about multi-zone systems.
Can I heat one room and cool another at the same time?
No. On a multi-zone system like this one, every head works in the same mode, heating or cooling. Each room still keeps its own set temperature.
What happens when every room calls for heat?
They share the outdoor unit’s capacity: 29,600 BTU/h at −8 °C, 41,500 at −15 °C.
How many heads can I connect?
Up to 5 on this outdoor unit. This product is configured for 2 heads.
How much is the LogisVert grant?
$3,552 according to Hydro-Québec’s list of October 1, 2026. The grant never exceeds 100 % of the cost before taxes; apply within 9 months of installation.
Is it ENERGY STAR certified?
Yes, cold climate, ID 3621279. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −25 °C.
Is it noisy?
Indoors, the reference head goes down to 29 dB(A). Outdoors, 55 dB(A): we place the unit away from bedroom windows.
Why a multi-zone instead of several wall units?
One outdoor unit on the wall and one circuit. In return, the rooms share the capacity, and if the outdoor unit stops, every zone stops.
What does the warranty cover?
Our sheet lists 10 years on the compressor and 10 years on parts. AirGreen extended warranty: possible.
A multi-zone system is planned room by room. At your home.
We measure every room, draw the line route and choose the right head for each zone. The on-site estimate is free and the quote arrives within 24 h.