LG MULTI F MAX LGRED heat pump | 3-Heads | 42,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore and North Shore
The LG Multi F Max LGRED 42 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 49,950 BTU/h at −8 °C, heats down to −25 °C. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
3 rooms, one outdoor unit, and the most powerful in its class at −8 °C.
Compared with the 86 multi-zone systems of 42,000 BTU we sell. Figures come from the manufacturer’s data and the AHRI certification.
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 6 heads.
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 107 % of its rated capacity.
Tap a temperature: capacity, efficiency and the cost of one hour of heating.
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.
Where it ranks among same-size multi-zone systems.
Compared with the 86 multi-zone systems of 42,000 BTU we sell. 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.
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.
LG MULTI F MAX LGRED Heat Pump | 3-Heads | 42,000 BTU Compressor
At AirGreen, located in the heart of Montreal and also serving Laval, Longueuil, as well as the North and South Shores, we are proud to offer you a state-of-the-art heating and cooling solution: the LG MULTI F MAX LGRED 3-Zone Wall-Mounted Heat Pump. This innovative system is designed to provide optimal comfort in your home, thanks to its exceptional 42,000 BTU capacity and flexibility to be installed in up to six different zones.
An eco-efficient solution for your comfort
Exceptional performance and energy savings
The LG MULTI F MAX LGRED Heat Pump stands out for its remarkable energy efficiency, with a SEER of 20.5, ensuring significant savings on your energy bills. Although not Energy Star® compliant, it compensates with cutting-edge technology, including a variable speed compressor (Inverter), thus optimizing energy consumption according to the actual heating and cooling needs of your home.
Comfort tailored to every season
Thanks to its effective heating capacity down to -25°C, this system ensures your comfort even during Quebec's harsh winters. In summer, its 42,000 BTU cooling capacity keeps your home pleasantly cool, even on the hottest days.
Advanced technology for simplified management
Intelligent control and WiFi connectivity
The LG MULTI F MAX LGRED Heat Pump integrates WiFi connectivity, allowing you to control your heating and cooling system remotely via a mobile application. This feature offers unmatched flexibility and comfort of use, enabling you to adjust the temperature of your home, even when you're not there.
Innovative features for increased efficiency
- Auto operation: The system automatically adjusts operating settings to optimize comfort and energy efficiency.
- Auto restart operation: In the event of a power outage, the heat pump automatically restarts with the previous settings, sparing you from manual readjustments.
- Defrost/Deicing: This feature prevents the accumulation of frost on the outdoor unit, ensuring efficient operation even in cold weather.
- Low ambient operation: Allows efficient operation in cooling mode down to -14°F, ideal for cold climates.
Simplified installation and maintenance
Modular and flexible design
With the capability to manage up to six zones, the LG Heat Pump offers unmatched installation flexibility, perfectly adapting to your home's layout. The compact dimensions of the outdoor unit (37.41 x 15.75 x 54.34) facilitate its discreet integration outside your home.
AirGreen warranty and support
AirGreen is committed to providing exceptional customer service, with a comprehensive 10-year warranty on the compressor and parts. Furthermore, an extended warranty covering labor is available, giving you total peace of mind.
Advantageous subsidies for an economical installation
Take advantage of federal and provincial subsidies offered for the installation of eco-efficient systems in your home. With up to $5,000 in federal subsidies and $3,480 in provincial subsidies, installing your LG MULTI F MAX LGRED Heat Pump becomes even more accessible.
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: 49,950 BTU/h at −8 °C, 45,000 at −15 °C.
How many heads can I connect?
Up to 6 on this outdoor unit. This product is configured for 3 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 12 combinations, from 9+9+9 to 12 + 18 + 18 (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.
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.