LG Multi F LGRED R32 Heat Pump | 3 Indoor Units - 1 Compressor 30000 BTU
The LG Multi F LGRED R32 30 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 19,900 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $2,388 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
3 rooms, one outdoor unit.
Compared with the 48 multi-zone systems of 30,000 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 4 heads and modulates from 10,248 to 33,150 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 76 % 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 48 multi-zone systems of 30,000 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 configuration designed for the residential realities of Greater Montreal
At AirGreen, we have been installing multi-zone systems for many years in very real-world contexts: single-family homes in Montreal , duplexes in Laval , new condos in Longueuil , multigenerational residences on the North Shore , and renovated properties on the South Shore . The LG Multi F LGRED R32 – 30,000 BTU heat pump with three indoor units is precisely suited to these types of projects where independent temperature control by zone is desired, without the need for multiple outdoor compressors.
This system relies on an LGRED outdoor compressor designed for cold climates, capable of powering multiple wall units while maintaining stable operation during extended heating periods. In practice, this means fewer short cycles, finer control of partial loads, and greater comfort consistency from room to room.
Why is Multi F LGRED R32 often chosen after thermal analysis?
A truly usable multi-zone approach
In many projects, we observe that needs vary significantly between spaces: bedrooms with little daytime use, open-plan areas in continuous use, and south-facing home offices. The 3-zone configuration allows for precise adjustment of airflow and heating demand according to actual occupancy, thus limiting the energy waste often seen with poorly balanced, centralized systems.
An LGRED compressor designed for refrigeration
The LGRED compressor is designed to maintain stable heating performance in cold weather , down to approximately -25°C , which corresponds to typical Quebec winter conditions. During our installations on the North Shore , particularly in areas more exposed to wind, this ability to sustain heating without quickly switching to a backup system makes a tangible difference for residents.
The R-32 refrigerant: technical and regulatory choice
The choice of R-32 is not insignificant. This gas has a lower global warming potential than older refrigerants and allows for better volumetric efficiency. In practice, this translates into lower charges, more manageable pipe diameters, and simpler compliance with current and future residential HVAC standards.
An architecture compatible with multiple indoor units
The KUMXA301A compressor accepts various combinations of LG wall units. This flexibility is essential in renovations where each room has its own dimensional constraints. For example, in Montreal East, we completed an installation combining a more compact unit in an office and two larger capacity units in open-plan living spaces, while maintaining a single, discreet outdoor unit.
Useful technical data in the context of HVAC installation
Without going into theoretical figures that are not very meaningful to the occupants, certain data are essential to understanding the relevance of the system:
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Total nominal capacity : 30,000 BTU in cooling, with heating capacity maintained in winter conditions.
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Zones : 3 active zones, with technical possibility of evolution depending on the configuration.
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Voltage : 220-230 V, common configuration in Quebec residential settings.
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MCA : approximately 23.5 A and MOP : 30 A , values compatible with the majority of existing residential electrical panels, after on-site validation.
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Outdoor noise level : around 55 dB(A) , an important point in dense urban areas like Montreal or Longueuil .
Installation scenarios encountered by AirGreen
Single-family home in Laval
In a two-story property in Laval , the Multi F LGRED R32 replaced two old, independent systems. The result: a single outdoor unit, better thermal balance between floors, and a significant reduction in outside noise perceived by neighbors.
Renovated triplex in Montreal
In a Montreal triplex, the client wanted to avoid any major structural modifications. The multi-zone system allowed for the installation of three discreet wall units, each tailored to its apartment, while respecting the space constraints in the backyard.
Residence on the South Shore with teleworking
In Boucherville , a family who intensively used a home office needed precise temperature control during the day, independent of the other rooms. Independent zone management proved particularly effective in maintaining comfort without overheating the rest of the house.
Points to consider and common mistakes to avoid
Our field experience shows that multi-zone systems require rigorous planning :
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Undersizing of zones : wanting to maximize the number of units without respecting capacity ratios can harm overall performance.
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Poorly optimized piping layout : excessive lengths or poorly managed elevation changes affect system stability.
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Poor electrical management : even if the MCA and MOP are reasonable, a panel check is essential before any HVAC installation.
At AirGreen, each project begins with a detailed analysis to avoid these pitfalls and ensure a sustainable installation.
Why entrust the installation to AirGreen
We don't just install equipment. Our approach is based on:
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a thermal analysis tailored to the building
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a precise selection of indoor units according to the actual use of the rooms,
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an installation compliant with Quebec HVAC standards ,
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Post-installation monitoring is essential for more complex multi-zone systems.
This methodology explains why many clients from Montreal , Laval , Longueuil , the North Shore and the South Shore entrust us with their multi-zone projects, both residential and multi-unit.
Conclusion
The LG Multi F LGRED R32 – 30,000 BTU heat pump is a suitable solution for buildings requiring three independent comfort zones , while also meeting Quebec's climatic requirements. When properly sized and installed, it offers an efficient combination of comfort, flexibility, and durability.
For a personalized evaluation , a detailed quote or advice on integrating this system into your property in Montreal , Laval , Longueuil , on the North Shore or the South Shore , we invite you to contact AirGreen directly.
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: 19,900 BTU/h at −8 °C, 23,000 at −15 °C.
How many heads can I connect?
Up to 4 on this outdoor unit. This product is configured for 3 heads.
How much is the LogisVert grant?
$2,388 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 3553134. 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.