FORESTAIR MZ R454B 3-Zone Wall-Mounted Heat Pump | Ext: 27000 BTU
SEER2 (Seasonal Air Conditioning Efficiency)
HSPF2 (Seasonal heating efficiency)
EER2 (Instantaneous efficiency in air conditioning)
COP at -8 °C (Heating energy efficiency)
CFM (Airflow) (12,000 BTU***)
A high-performance multi-zone HVAC solution designed for Quebec's climate
At AirGreen, we regularly install multi-zone systems in homes and multiplexes in Montreal, Laval, Longueuil, on the North Shore, and the South Shore. The FORESTAIR MZ R454B (27,000 BTU) wall-mounted heat pump stands out as a solution particularly well-suited to local realities: extreme temperatures, the need for precise zoning, and the pursuit of energy efficiency.
This model is not limited to air conditioning a single space—it intelligently manages three independent zones with a single outdoor unit, while maintaining stable performance down to -25 °C.
Why choose a triple-zone heat pump like the FORESTAIR MZ?
A concrete answer to the needs of Quebec properties
In practice, a large part of the projects we carry out at AirGreen concern:
- Houses with multiple floors
- Duplexes or triplexes with distinct needs per room
- Extensions or renovations without central ducts
In these cases, a multi-zone wall-mounted heat pump offers a key advantage: controlling the temperature room by room, without compromise.
Real-life AirGreen installation example
In Boucherville (South Shore), we recently installed this FORESTAIR model in a renovated bungalow:
- Living room + kitchen (12,000 BTU)
- Master bedroom (9,000 BTU)
- Finished basement (9,000 BTU)
Result:
- Noticeable reduction in on/off cycles
- Uniform comfort in all zones
- Optimized energy consumption thanks to the DC inverter
Detailed technical specifications of the FORESTAIR MZ 27,000 BTU
Performance and energy efficiency
- Cooling capacity: 27,000 BTU
- Effective heating capacity down to -25 °C
- Power at -8 °C: 22,400 BTU
- Power at -15 °C: 19,800 BTU
- SEER2: 24.0
- HSPF2: 10.5
- COP: 3.50
These data are confirmed in the official technical documentation, which also highlights the stability of performance even in severe winter conditions.
Technology and design
- High-efficiency DC Inverter compressor
- Intelligent defrosting
- Quiet operation (62 dB outdoor)
- WiFi included for remote control
- ENERGY STAR® compatible (including cold climate)
Exceptional operating range
- Cooling: -15 °C to 55 °C
- Heating: -25 °C to 30 °C
This point is essential for customers in Montreal and Laval, where temperature variations are significant.
The new R-454B refrigerant: a strategic choice
The FORESTAIR MZ uses R-454B gas, a significant evolution in the HVAC field.
Concrete advantages
- Reduced environmental impact (lower GWP)
- Improved thermal efficiency
- Compliance with future environmental standards
At AirGreen, we strongly recommend systems using this type of refrigerant, as they ensure long-term sustainability for homeowners.
HVAC installation: what you really need to know
Essential technical data for installation
According to the technical sheet:
- Voltage: 208-230V / 1 phase / 60 Hz
- MCA: 18A
- Circuit breaker: 30A
- Maximum elevation: 10 m (33 feet)
What we see in the field
A common mistake among less experienced installers is improperly balancing line lengths between zones. This can lead to:
- Loss of efficiency
- Increased noise
- Poor heating performance
At AirGreen, we systematically optimize:
- The positioning of indoor units
- The routing of refrigerant lines
- Electrical sizing
Flexibility of indoor combinations
This system allows for several configurations:
- 9 + 9 + 9
- 9 + 12 + 12
- 12 + 12 + 12
- 9 + 9 + 18
This provides great flexibility to adapt the system to the realities of each property.
Concrete case in Laval
In a duplex in Laval, we combined:
- 18,000 BTU on the ground floor
- 9,000 BTU in each bedroom upstairs
This allowed for:
- Better management of thermal loads
- A reduction in the annual energy bill
Noise level and daily comfort
- Indoor: 30 to 46 dB(A)
- Outdoor: 62 dB(A)
In residential neighborhoods in Longueuil or Montreal, this noise level is particularly appreciated.
We have already replaced older noisy systems with this model, with immediate customer feedback:
"You can barely hear anything anymore, even at night."
Dimensions and aesthetic integration
- Outdoor unit: 38.5 x 16.63 x 31.63 inches
- Compact and discreet design
On the North Shore, several customers want to preserve the exterior aesthetics of their homes. This model integrates easily:
- On a wall mount
- On a ground slab
- Behind landscaping
Subsidies and profitability
- LogisVert subsidy: $2,688
This amount may vary according to installation criteria but remains a significant lever for reducing the initial cost.
Return on investment
In several projects carried out by AirGreen:
- Annual savings: 25 to 40%
- Payback period: 4 to 7 years
What we have learned about this model
After several installations, here are the key points:
Strengths
- Very good actual heating performance
- Stable multi-zone performance
- Flexible installation
Points to watch out for
- Requires precise installation
- Essential zone optimization
- Importance of proper initial sizing
Why choose AirGreen for your HVAC installation
At AirGreen, we make a difference through:
- Concrete field expertise in HVAC in Montreal, Laval, Longueuil
- Optimized, not standardized, installation
- Total price transparency
- Experienced refrigeration technicians
- Insurance coverage of $5,000,000
Each project is designed to maximize:
- Comfort
- Energy efficiency
- System durability
Conclusion: a reliable multi-zone heat pump adapted to Quebec
The FORESTAIR MZ R454B 27,000 BTU 3-zone wall-mounted heat pump represents an excellent choice for:
- Multi-room houses
- Duplexes/triplexes
- Ductless renovation projects
It combines performance, flexibility, and energy efficiency, while being perfectly suited to Quebec's climatic conditions.
Get a personalized quote with AirGreen
Are you considering installing a multi-zone heat pump in Montreal, Laval, Longueuil, North Shore, or South Shore?
Contact AirGreen today for:
- A free evaluation
- A customized configuration
- A clear and detailed estimate
Our team supports you from system selection to complete installation.