Ductless Quad Zone Heat Pump Gree Multi GEN2 Compressor 42 000 BTU Montreal
The Gree Multi GEN2 42 000 multi-zone heat pump heats and cools 4 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.
4 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 four (4) zones. Gree Multi GEN2 mini split with 42 000 BTU compressor, in Greater Montreal.
AirGreen is proud to serve the Greater Montreal area as a leading HVAC service provider. We are known for selling and installing heat pumps throughout the region, including Laval, Longueuil, South Shore, and North Shore. One of the flagship products in our Multi Zone Heat Pump range is the Gree Multi Gen2 heat pump, which is equipped with a 42,000 BTU compressor and capable of handling from two to five indoor units.
Superior Performance with G10 Inverter Technology
The Gree Multi Gen2 heat pump features G10 inverter technology, which allows for significant energy savings while offering improved performance. G10 inverter technology offers ultra-low noise levels, reduced energy consumption, and precise temperature control.
- G10 Inverter Technology: Allows for optimized system performance and energy savings through low power consumption.
- Quiet Operation: Sound levels can go as low as 56 dB(A) for the outdoor unit, ensuring a calm and serene atmosphere in your home or workplace.
Multi-Zone System for a Superior Comfort Experience
This heat pump can heat or cool up to five zones with a single outdoor unit, making it an ideal HVAC solution for residential and commercial spaces of all sizes.
- High Efficiency up to 21 SEER2 / 10 HSPF2: This level of efficiency equates to substantial energy savings.
- Flexible Temperature Ranges: Offers a cooling range from -30°C to 48°C and a heating range from -30°C to 24°C to ensure comfort all year round.
User-Oriented Design and Advanced Features
The Gree Multi Gen2 heat pump offers a range of features designed to make its use easier:
- Self-diagnosis: This function allows for early detection of potential problems, making it easier to resolve them.
- Intelligent Defrost: Reduces the time and energy loss associated with defrosting by only triggering when needed.
- WiFi Capability: All indoor units are WiFi-equipped, allowing you to control the system remotely.
Certified Performance and Environmentally Friendly
The Gree Multi Gen2 heat pump is designed to deliver robust performance while being environmentally friendly.
- Energy Star® Certified: This certification attests to the system's superior energy efficiency.
- Environmentally Friendly Refrigerant: Uses R410A refrigerant which has minimal impact on the environment.
- Automatic Voltage Adaptation: This function ensures stable performance even with voltage fluctuations.
Compact Design for Seamless Integration
The "Small Foot Print" design of this model makes it suitable for various spaces. It can integrate discreetly and without disturbance into any environment, while ensuring quiet operation.
Warranty for Peace of Mind
AirGreen offers a full 10-year warranty on parts and the compressor for residential and commercial applications. This speaks to our confidence in the durability and performance of the Gree Multi Gen2 heat pump.
By choosing the Gree Multi Gen2 heat pump, you're choosing an HVAC solution that delivers top-tier performance, high energy efficiency, and long-term savings. This heat pump is the perfect marriage of technology, functionality, and design that seamlessly fits into your space. At AirGreen, we offer HVAC solutions that are not just about temperature control, but about enhancing comfort and wellbeing in all seasons.
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 + 9 000 BTU + 9 000 BTU |
| 42 000 BTU |
9 000 BTU + 9 000 BTU + 9 000 BTU + 12 000 BTU |
| 42 000 BTU |
9 000 BTU + 9 000 BTU + 9 000 BTU + 18 000 BTU |
| 42 000 BTU | 9 000 BTU + 9 000 BTU + 12 000 BTU+ 12 000 BTU |
| 42 000 BTU | 9 000 BTU + 9 000 BTU + 12 000 BTU+ 18 000 BTU |
| 42 000 BTU | 9 000 BTU + 12 000 BTU + 12 000 BTU+ 12 000 BTU |
| 42 000 BTU | 9 000 BTU + 12 000 BTU + 12 000 BTU+ 18 000 BTU |
| 42 000 BTU | 12 000 BTU + 12 000 BTU + 12 000 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: 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 4 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 8 combinations, from 9+9+9+9 to 12+12+12+12 (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.