LG MULTI F MAX LGRED heat pump | 2-Heads | 18,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore and North Shore
The LG Multi F Max LGRED 18 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. it delivers 14,700 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $1,764 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
2 rooms, one outdoor unit.
Compared with the 48 multi-zone systems of 18,000 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 2 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 122 % 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.
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 18,000 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.
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 | 2-Heads | 18,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore, and North Shore
An Optimal Comfort Solution for Every Season
In a world where home comfort has become a priority, AirGreen positions itself as a key player in the installation and maintenance of high-quality heating, ventilation, and air conditioning (HVAC) systems in Montreal, Laval, Longueuil, as well as on the South Shore and North Shore. Our flagship product, the LG MULTI F MAX LGRED wall-mounted 2-zone heat pump with an 18,000 BTU compressor, stands at the core of our offerings to meet our clients' specific needs. This innovative system, designed to maximize comfort throughout the year, boasts numerous advantages and features that we are proud to highlight.
Advanced Technical Features
The LG MULTI F MAX LGRED heat pump distinguishes itself with its exceptional ability to provide efficient cooling and heating in two separate zones, making it an ideal choice for households looking for a solution adaptable to various spaces. Here are some of the features that make this heat pump a preferred choice:
- Cooling capacity of 18,000 BTU and heating capacity down to -25°C, ensuring optimal comfort in all seasons.
- Compact and aesthetic design, with exterior dimensions measuring 37.41 x 15.66 x 32.84, allowing for a discreet and harmonious integration into any type of interior.
- Included WiFi connectivity, offering remote management via smartphone for increased ease of use.
- Energy Star® certification, ensuring superior energy efficiency and savings on electricity bills.
- Federal and provincial subsidies, making the investment even more advantageous for homeowners.
User Benefits and Advantages
Opting for the LG MULTI F MAX LGRED heat pump means choosing cutting-edge technology for your comfort. Among the notable benefits:
- Optimized energy performance (21.0 SEER) for a significant reduction in energy consumption.
- Quiet operation (54.0 dB(A) for the outdoor unit), preserving the tranquility of your home environment.
- Extended warranty, offering peace of mind with 10 years of coverage for the compressor and parts, and the possibility of an additional warranty (10-10-10).
- Advanced technologies, such as automatic operation, auto restart, frost/defrost detection, variable speed compressor (Inverter), and much more, for unmatched adaptability and efficiency.
Why Choose AirGreen for Your Installation?
At AirGreen, we understand that installing a heat pump is a significant investment for your home. That's why we commit to providing exceptional service at every step of the process. Our certified technicians have the expertise necessary to ensure flawless installation and maintenance, thus maximizing the lifespan and efficiency of your system. Furthermore, our in-depth knowledge of available subsidies allows you to benefit maximally from financial aid for your project.
Conclusion
The LG MULTI F MAX LGRED wall-mounted heat pump represents the pinnacle of HVAC technology, combining energy efficiency, year-round comfort, and innovation. AirGreen is proud to offer this flagship product in Montreal, Laval, Longueuil, as well as on the South Shore and North Shore, reinforcing our commitment to improving the comfort and quality of life of our clients. Contact us today to discover how this solution can transform your home.
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: 14,700 BTU/h at −8 °C, 22,000 at −15 °C.
How many heads can I connect?
Up to 2 on this outdoor unit. This product is configured for 2 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 3 combinations, from 9 + 9 to 12 + 12 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$1,764 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 2411143. 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, 54 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.