Double Zone Heat Pump Gree Multi GEN2 Compressor 18,000 BTU Montreal
The Gree Multi GEN2 18 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. it delivers 15,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $1,800 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. 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 2 heads and modulates from 7,000 to 16,400 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 75 % 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 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.
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.
Installation and distribution of a Multi Zone heat pump with two (2) zones. Gree Multi GEN2 mini split with 18 000 BTU compressor, in Greater Montreal.
Experience unprecedented comfort, control, and energy efficiency with the Gree Multi Gen2, an 18,000 BTU Double Zone Heat Pump that perfectly integrates with your indoor environment. Designed for residential and commercial use, the Multi Gen2 provides reliable, high-performance heating and cooling for multiple zones, bringing comfort to every corner of your space.
The Pinnacle of Efficiency
Gree Multi Gen2 utilizes the advanced G10 inverter technology, providing unmatched energy efficiency with a high SEER rating of up to 21 SEER2 and a 10 HSPF2, reducing your energy consumption significantly. Additionally, the inverter technology enhances system performance and ensures precise temperature control for unparalleled comfort.
- G10 Inverter Technology: The advanced G10 Inverter technology allows the Multi Gen2 to adjust power usage in real time, allowing for energy conservation and cost savings.
- High Efficiency: With a SEER rating of up to 21 SEER2 and a 10 HSPF2, you can rest assured that the Multi Gen2 is one of the most energy-efficient heat pumps in the market.
Silent Yet Powerful
Don't let the size fool you. Despite its small "Foot Print" design, the Gree Multi Gen2 operates at low noise levels down to 53 dB(A) on the outdoor unit, performing discreetly without disturbing your peace. Experience powerful cooling or heating that goes unnoticed.
- Quiet Operation: With sound levels down to 53 dB(A) on the outdoor unit, the Gree Multi Gen2 operates at ultra-quiet sound levels.
- Small “Foot Print” Design: Despite its powerful performance, the Multi Gen2 boasts a compact and unobtrusive design that integrates seamlessly into your space.
Intelligent Functionality
The Gree Multi Gen2 is designed to offer not just comfort but also intelligent functionality. It self-diagnoses to keep performance optimal, intelligently defrosts only when needed, and even adjusts to voltage fluctuations, ensuring stable operation. All indoor units are WiFi-capable, offering convenient remote control.
- Self-diagnosis: The heat pump self-diagnoses to ensure optimal performance, minimizing maintenance costs.
- Intelligent Defrost: The intelligent defrost feature reduces energy loss and defrost time by only defrosting when needed, instead of by a set timer.
- Automatic Voltage Adaptation: The heat pump adjusts to voltage fluctuations, ensuring stable and efficient operation even during electrical inconsistencies.
- WiFi Capable Indoor Units: The indoor units are WiFi capable, allowing for remote control of your comfort settings.
Unparalleled Versatility
Capable of heating and cooling up to 5 zones with just one outdoor unit, the Multi Gen2 offers unprecedented flexibility. It comes with 5 unique indoor unit options to select from, catering to diverse requirements. It also has an extensive cooling range of -30°C - 48°C and a heating range of -30°C - 24°C, ensuring comfort in any weather.
- Multiple Zone Coverage: With the capability to heat and cool up to 5 zones with one outdoor unit, the Multi Gen2 is perfect for larger homes or commercial spaces.
- Broad Temperature Range: With a cooling range of -30°C - 48°C and a heating range of -30°C - 24°C, the Multi Gen2 ensures your comfort in any weather.
- 5 Indoor Unit Options: Choose from 5 unique indoor unit options to match your specific requirements and preferences.
Specifications
Here are some specific details for your reference:
- System Type: HEAT PUMP
- Number of Zones: 2
- Refrigerant Type: R410A
- Sound Pressure Level: 53 dB(A)
- Package Dimension (W x H x D): 34 3/8 × 24 7/16 × 15 11/16 inches
- Additional Charge: 0.2 oz/ft Port B (in)
- Pipe Length to furthest Indoor Unit: 66 ft
- WiFi
- Energy Star
- Comes with a 10-year parts and 10-year compressor warranty.
- 10-year labor warranty available as an option.
Warranty and Support
The Gree Multi Gen2 comes with a 10-Year Parts and 10-Year Compressor limited warranty for both residential and commercial use, offering you peace of mind. Trust in our commitment to your satisfaction.
Rediscover comfort with the Gree Multi Gen2 Heat Pump, where technology and convenience come together to deliver a remarkable heating and cooling experience.
This series is eligible for numerous provincial subsidies, such as “Efficient Heat Pumps”, “Chauffez Vert” or “RénoClimat”, and federal, such as “Greener Homes”.
| Compressor Power |
Heads Power (Zones/Inside Units) |
| 18 000 BTU | 9 000 BTU + 9 000 BTU |
| 18 000 BTU | 9 000 BTU + 12 000 BTU |
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: 15,000 BTU/h at −8 °C, 13,600 at −15 °C and 10,200 at −30 °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 2 combinations, from 9 + 9 to 9 + 12 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$1,800 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 2414872. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −30 °C. At −30 °C, it still delivers 10,200 BTU/h with a COP of 1.51.
Is it noisy?
Indoors, the reference head goes down to 26 dB(A). Outdoors, 53 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: available.
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.