LG

LG MULTI F MAX LGRED heat pump | 4-Heads | 36,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore and North Shore

In stock
SKU: LMU360HHV-9999
36,000BTU/h · 4 heads
−25 °Cheats down to
Wi-Fi includedR-410AUp to 5 heads
Areas
Talk to a technician · 514 316-2973
Outdoor unit LMU360HHVPossible indoor models LMN079HVT, LSN090HSV5, LSN120HSV5, LMN159HVT, LSN180HSV5, LMN249HVTAHRI 10443472
In short

The LG Multi F Max LGRED 36 000 multi-zone heat pump heats and cools 4 rooms with a single outdoor unit. it delivers 45,510 BTU/h at −8 °C, heats down to −25 °C. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.

01 · The verdict in 10 seconds

4 rooms, one outdoor unit, and the most powerful in its class at −8 °C.

Compared with the 141 multi-zone systems of 36,000 BTU we sell. Figures come from the manufacturer’s data and the AHRI certification.

AHRI 10443472
+45,510 BTU/h at −8 °CRank 1 (tied) of 138. Class median: 27,400 BTU/h.
+HSPF2 11.5Rank 1 (tied) of 141. Class median: 10.0.
+EER2 15.0Rank 1 (tied) of 138. Class median: 12.0.
!Good to know: indoor head from 29 dB(A)Rank 73 of 134; class median: 28 dB(A).
45,510BTU/h at −8 °C
−25 °Cstill heating
4 → 5heads, on the same unit
02 · The machine

The parts that make a multi-zone system.

Tap a part to learn more.

LMU360HHV

Outdoor unit

One compressor for the whole house. It supplies up to 5 heads.

03 · How it works

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.

04 · My plan

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.

05 · The series

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.

Outdoor2 zones3 zones4 zones5 zones6 zones
18,000BTU
2
24,000BTU
23
30,000BTU
234
36,000BTU
23Here5
42,000BTU
23456

LG Multi F Max LGRED 36 000 · 4 zones

45,510 BTU/h
at −8 °C

Up to 5 heads on this outdoor unit. Tap another box to see that size.

06 · Deep cold

At −15 °C, it still delivers 113 % of its rated capacity.

Tap a temperature: capacity, efficiency and the cost of one hour of heating.

07 · The bill

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.

08 · Efficiency

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.

SEER2 · seasonal cooling21.0
Scale 1 – 30Median: 21
Rank 71 (tied) of 141 in its class.
HSPF2 · seasonal heating11.5
Scale 1 – 15Median: 10
Rank 1 (tied) of 141 in its class.
EER2 · cooling in peak heat15.0
Scale 1 – 20Median: 12
Rank 1 (tied) of 138 in its class.
09 · Report card

Where it ranks among same-size multi-zone systems.

Compared with the 141 multi-zone systems of 36,000 BTU we sell. Weaknesses too, said plainly.

10 · Head-to-head

Against three other brands in its class.

Same rated size, other manufacturers. Pick the opponent.

11 · Multi-zone or wall units

One multi-zone or several wall units? Both sides, honestly.

This multi-zone4 wall units
On the wall1 outdoor unit4 outdoor units
Electrical1 dedicated circuitOne circuit per unit
CapacityShared between roomsReserved for each room
If the outdoor unit stopsEvery zone stopsOnly one room
ModesSame mode everywhereEach room chooses
LogisVertPer the listDepends on each model

We compare both options on your floor plan during the estimate.

12 · Installation

What to know before installing a multi-zone system.

Dimensions, wiring and lines, drawn. Then our six steps.

The outdoor unit, dimensioned

54.34 in
LMU360HHVDepth 15.75 in
37.41 in
Dimensions: product sheet (W × D × H).

One circuit for the whole house

Electrical panel
Load calculation before the quote
45 A max. breaker
MCA 31 A · 220 V
Outdoor unit
Head 1
Head 2
Head 3
Head 4
Our RBQ licence covers electrical work (subclass 16).
01Room-by-room visit and surveyWe measure each zone and note insulation and windows. The on-site estimate is free.
02Heads and line layoutOne pair of lines per head.
03Outdoor unit baseAbove the snow line, away from the neighbours’ bedroom windows.
04Exposed, finished linesLines 3/8 - 3/4 in under line covers, no work inside the walls.
05Dedicated circuit220 V, MCA 31 A, 45 A protection. The panel load calculation is done before the quote.
06Commissioning, zone by zoneEach head is tested and the controls set up.
13 · Sound

Published sound levels, on one scale.

We use the outdoor figure to choose where the unit goes.

29
38
57
28
61
20 dB(A)3040506070
29 Reference head, lowest speed38 Reference head, highest speed28 Class indoor median57 Outdoor unit61 Class outdoor median
Values in dB(A). Indoor values are those of the sheet’s reference head; each head has its own, confirmed for the chosen model. Municipal noise by-laws vary by borough.
14 · Specifications

Every number, and where it comes from.

Each line carries its source; a line with no published value is not shown.

Performance
Cooling capacity (size)36,000 BTU · 3 tonsSheet
SEER2 (seasonal cooling efficiency)21.0AHRI
EER2 (instant cooling efficiency)15.0AHRI
HSPF2 (seasonal heating efficiency, region IV)11.5AHRI
Dehumidification2.3 pints/hSheet
Heating
Capacity at −8 °C45,510 BTU/hSheet
Capacity at −15 °C41,000 BTU/hSheet
Heats down to−25 °CSheet
Zones and heads
Zones on this product4 Zones (Quad Zone)Sheet
Maximum zones5 ZonesSheet
Possible indoor modelsLMN079HVT, LSN090HSV5, LSN120HSV5, LMN159HVT, LSN180HSV5, LMN249HVTSheet
Combinations offered7 · 9+9+9+9 … 12+12+12+12Sheet
Indoor dimensions (W × D × H)32.94 × 7.44 × 12.13 inSheet
Vertical louversManualSheet
Horizontal louversAutoSheet
Airflow (reference head)282 CFMSheet
Indoor sound (reference head)29 – 38 dB(A)Sheet
Installation
Outdoor unit (W × D × H)37.41 x 15.75 x 54.34 inSheet
Line sizes3/8 - 3/4 inSheet
Outdoor sound57 dB(A)Sheet
Electrical
Voltage220 VSheet
MCA (minimum circuit ampacity)31 ASheet
MOP (maximum overcurrent protection)45 ASheet
RefrigerantR-410ASheet
Wi-FiIncludedSheet
Certifications and warranty
AHRI10443472AHRI
Warranty (compressor · parts · labour)10 yrs · 10 yrs · 0 yrsSheet
AirGreen extended warrantyPossibleSheet
15 · Official brochures

The manufacturer’s documentation, as PDF.

16 · Description

Everything we have written about this system.

LG MULTI F MAX LGRED Heat Pump | 4-Heads | 36,000 BTU Compressor | Montréal, Laval, Longueuil, South Shore, and North Shore

A revolution in home comfort

The innovation in the HVAC (Heating, Ventilation, and Air Conditioning) sector has reached a new level with the introduction of the wall-mounted 4-zone LG MULTI F MAX LGRED heat pump. Designed to offer a highly efficient heating and cooling solution, this technology represents the top choice for residents of Montréal, Laval, Longueuil, as well as the South Shore and North Shore.

Technical features and benefits

Exceptional performance and versatility

  • Cooling and Heating Capacity: With an impressive capacity of 36,000 BTU for cooling and an efficiency for heating even at -25°C, this heat pump ensures optimal comfort all year round.
  • Comfort Zones: Capable of handling up to 4 zones simultaneously, with the possibility to extend to 5 zones, it perfectly adapts to the specific needs of each space in your home.

Cutting-edge technology and energy saving

  • The system uses a variable speed compressor (Inverter), significantly reducing energy consumption while maintaining a constant temperature.
  • Despite not having the Energy Star® label, its SEER efficiency rating of 21.0 makes it an eco-efficient choice, reducing energy costs in the long term.

Design and installation

Design and dimensions

  • The exterior dimensions (37.41 x 15.75 x 54.34) are designed for discreet and aesthetic integration into your home environment.
  • The exterior serial number (LMU360HHV) and interior serial numbers (LMN079HVT, LSN090HSV5, etc.) ensure traceability and ease of maintenance.

Professional installation by AirGreen

  • Our team of experts in Montréal and surrounding areas ensures meticulous installation according to the strictest standards, guaranteeing the proper functioning and longevity of your heat pump.

Innovative features

  • Auto operation and Auto restart for automatic management and restarting after a power outage.
  • Defrost/Deicing for optimal operation even in the harshest winter conditions.
  • Low ambient operation allows for efficient cooling down to -14°F, ideal for hot summers.
  • Self diagnosis and Soft start minimize the risk of damage and extend the unit's lifespan.

Financial advantages and subsidies

Subsidies and savings

  • Benefit from federal subsidies of up to $5,000 and provincial subsidies of $3,360, making this investment even more attractive.
  • The extended warranty (10-10-10) offers exceptional peace of mind, covering compressor, parts, and labor.

Why choose the LG MULTI F MAX LGRED Heat Pump at AirGreen?

Our commitment to quality, customer service, and technical expertise positions us as the preferred choice for your HVAC needs in Montréal and beyond. Choosing AirGreen, you not only benefit from cutting-edge technology but also professional support from selection to the installation of your 4-zone wall-mounted heat pump.

Conclusion

The LG MULTI F MAX LGRED heat pump embodies the forefront of home comfort solutions. Combining performance, energy efficiency, and technological innovations, it represents a wise investment to improve your quality of life at home. With AirGreen, your installation is in the hands of experts dedicated to your satisfaction.

17 · Questions

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: 45,510 BTU/h at −8 °C, 41,000 at −15 °C.

How many heads can I connect?

Up to 5 on this outdoor unit. This product is configured for 4 heads.

Can I mix head sizes?

Yes. The “Zones” menu offers 7 combinations, from 9+9+9+9 to 12+12+12+12 (in thousands of BTU). Each head is sized for its room.

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, 57 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; labour is not included by the manufacturer. AirGreen extended warranty: possible.

AirGreen

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.

RBQ 5645-9605-01Ventilation 15.8, refrigeration 15.10, electrical 16
We handle the circuitOur licence covers the electrical work
Beware of scamsHydro-Québec does no phone or door-to-door solicitation for LogisVert
Sources checked on October 1, 2026.Costs: Hydro-Québec Rate D, 11.142 ¢/kWh (second tier, since 1 April 2026). Amounts shown are estimates; only the responsible bodies confirm the grant awarded.