Ductless Double Zone Heat Pump Gree Multi GEN2 Compressor 42 000 BTU Montreal
The Gree Multi GEN2 42 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. it delivers 35,600 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $1,780 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
2 rooms, one outdoor unit.
Compared with the 86 multi-zone systems of 42,000 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 5 heads and modulates from 8,870 to 38,200 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 77 % 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. $50 per 1,000 BTU/h is the rate for ENERGY STAR heat pumps (guide v1.10).
Where it ranks among same-size multi-zone systems.
Compared with the 86 multi-zone systems of 42,000 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 42 000 BTU compressor, in Greater Montreal.
Welcome to AirGreen, a leading HVAC company based in Montréal. We are specialists in the sale and installation of heat pumps throughout Greater Montréal, Laval, Longueuil, South Shore, and North Shore. One of our most sought-after products in the Multi-Zone Heat Pumps section is the "Gree Multi Gen2" equipped with a 42,000 BTU compressor. This advanced heat pump can power two to five indoor units, making it an efficient choice for both residential and commercial setups.
Advanced G10 Inverter Technology
The "Gree Multi Gen2" comes with G10 inverter technology, a feature designed to provide enhanced system performance and energy saving. It offers lower power consumption, ultra-low frequency/low noise, and precise temperature control.
- G10 Inverter Technology: This unique feature ensures low power consumption and ultra-precise temperature control.
- High Efficiency: The unit offers efficiency up to 21 SEER2 / 10 HSPF2, making it an Energy Star-certified model that will reduce your energy costs.
- Multi-Zone Cooling and Heating: With a capability to heat and cool up to 5 zones with a single outdoor unit, the "Gree Multi Gen2" is a versatile solution for your HVAC needs.
Superior Design for Seamless Integration
The "Gree Multi Gen2" boasts a small “footprint” design that integrates seamlessly and discreetly into your space while offering ultra-quiet operation.
- Quiet Operation: With sound levels down to 56 dB(A) for the outdoor unit, this system operates unobtrusively in your home or workplace.
- Intelligent Defrost: The heat pump features an intelligent defrost function which reduces energy loss and defrost time by only defrosting when necessary, instead of operating on a set timer.
Convenient Smart Features
The "Gree Multi Gen2" comes equipped with several advanced features that add convenience and improve performance:
- Self-Diagnosis: The unit can diagnose its performance and detect any issues, ensuring optimal functioning and reducing maintenance time and costs.
- WiFi Capability: All indoor units are WiFi capable, allowing for convenient control and adjustment of settings through a connected device.
- Automatic Voltage Adaptation: This feature ensures the unit operates efficiently even under voltage fluctuations.
Suitable for Residential and Commercial Spaces
The "Gree Multi Gen2" heat pump is an ideal solution for both residential and commercial spaces. With a cooling range of -30°C to 48°C and a heating range of -30°C to 24°C, this unit guarantees year-round comfort regardless of the weather conditions.
- Versatile Indoor Unit Options: This system offers five unique indoor unit options to choose from, providing a flexible solution tailored to your specific needs.
- Residential and Commercial Warranty: The "Gree Multi Gen2" is backed by a comprehensive 10-year warranty for both parts and compressor, covering residential and commercial use.
With the "Gree Multi Gen2", AirGreen is proud to bring you a product that fits together for comfort, efficiency, and quality. Whether you're seeking an HVAC solution for your home or business, the "Gree Multi Gen2" with its advanced features and robust design is a standout choice. Choose AirGreen, and experience the difference of a top-quality heat pump today!
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) |
| 42 000 BTU |
9 000 BTU + 9 000 BTU |
| 42 000 BTU |
9 000 BTU + 12 000 BTU |
| 42 000 BTU |
9 000 BTU + 18 000 BTU |
| 42 000 BTU | 9 000 BTU + 24 000 BTU |
| 42 000 BTU |
12 000 BTU + 12 000 BTU |
| 42 000 BTU |
12 000 BTU + 18 000 BTU |
| 42 000 BTU | 12 000 BTU + 24 000 BTU |
| 42 000 BTU |
18 000 BTU + 18 000 BTU |
| 42 000 BTU | 18 000 BTU + 24 000 BTU |
| 42 000 BTU | 24 000 BTU + 24 000 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: 35,600 BTU/h at −8 °C, 32,400 at −15 °C and 24,500 at −30 °C.
How many heads can I connect?
Up to 5 on this outdoor unit. This product is configured for 2 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 10 combinations, from 9 + 9 to 24 + 24 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$1,780 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, ID 2414875.
Down to what temperature does it heat?
Down to −30 °C. At −30 °C, it still delivers 24,500 BTU/h with a COP of 1.5.
Is it noisy?
Indoors, the reference head goes down to 26 dB(A). Outdoors, 63 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.