FORESTAIR MZ R454B 2-Zone Wall-Mounted Heat Pump | Outdoor: 36000 BTU

In stock
SKU: FA-M36-D4TL-O-454--2
Provincial Subsidy (LogisVert): 3288 $ (Updated: November 26, 2025)
Model Number (External): FA-M36-D4TL-O-454
AHRI: 217512363
ENERGY STAR®: Yes
ENERGY STAR® (Cold Climate): Yes / Yes
# ENERGY STAR ID: 4529625
Heating Capacity: -25 °C
Cooling Capacity: 36,000 BTU
Gas (Freon): R-454B
WiFi: Included

SEER2 (Seasonal Air Conditioning Efficiency)

1 22.5 30

HSPF2 (Seasonal heating efficiency)

1 10.0 15

EER2 (Instantaneous efficiency in air conditioning)

1 11.1 20

COP at -8 °C (Heating energy efficiency)

1 2.0 3
Nominal Power: 36,000 BTU
Power at -8°C: 27400 BTU
Power at -15°C: 26000 BTU
Interior Dimensions (L x D x H): 36.25 x 12 x 7.63 in ***
Vertical flap control (Air direction): Auto ***
Horizontal flap control (Air direction): Auto ***
Sound Pressure Level (Indoor): 30 / 46 dB(A) ***(depending on the model chosen)***
Possible Model Number (Interior): FA-H09-D24TL-I-454, FA-H12-D24TL-I-454, FA-H18-D24TL-I-454, and FA-H24-D24TL-I-454

CFM (Airflow) (12,000 BTU***)

1 500 700
External Dimensions (L x W x H): 42.25 x 18.38 x 33.63 in
Zones: 2 Zones (Dual Zone)
Maximum Zones: 4 Zones (Quad Zone)
Sound Pressure Level (Exterior): 65.0 dB(A)
Voltage: 220 V
MCA (Minimum Circuit Ampacity): 22 A
MOP (Maximum Overcurrent Protection): 35 A
Warranty (Compressor - Parts - Labor): 10-10-0 years
Additional Warranty: Possible

A high-performance multi-zone solution designed for Quebec's climate

At AirGreen, we regularly install multi-zone systems in residences in Montreal, Laval, Longueuil, on the North Shore, and the South Shore, and this FORESTAIR MZ R454B 36,000 BTU wall-mounted heat pump clearly stands out in its category. Designed to offer stable performance even during harsh winters, it combines energy efficiency, installation flexibility, and modern technology.

This model directly addresses several frequent concerns of our customers:

  • Efficient heating down to -25°C
  • Powering multiple rooms with a single outdoor unit
  • Reducing energy consumption without compromising comfort
  • Benefiting from a solution eligible for LogisVert grants ($3,288)

Understanding the real power of a 36,000 BTU multi-zone heat pump

Capacity and performance in real conditions

The FORESTAIR MZ R454B 36,000 BTU offers high nominal power, but what really matters is its performance in Quebec winter conditions.

  • Heating capacity at -8°C: 27,400 BTU
  • Capacity at -15°C: 26,000 BTU
  • Guaranteed operation down to -25°C
  • DC Inverter technology to continuously adjust power

Impressive energy efficiency

  • SEER2: 22.5
  • HSPF2: 10.0
  • COP: 3.5

In concrete terms, this means that for every dollar of electricity consumed, you get much more useful heat compared to traditional systems.


Multi-zone configuration: essential flexibility

Up to 2 zones (expandable to 4)

This system is designed for:

  • 2 standard zones
  • Up to 4 maximum zones

This allows for air conditioning or heating:

  • A duplex
  • A condo with several bedrooms
  • A multi-story house with distinct zones

Possible combinations of indoor units

Compatible models include:

  • 9,000 BTU
  • 12,000 BTU
  • 18,000 BTU
  • 24,000 BTU

At AirGreen, we always adapt the combination according to:

  • The actual surface area
  • The building's insulation
  • Sun exposure
  • The specific needs of the occupants

R-454B refrigerant: a transition to more ecological systems

Why this gas is important

The FORESTAIR MZ uses R-454B, a new generation refrigerant:

  • Reduced environmental impact (lower GWP)
  • Compliance with future standards
  • Better thermal efficiency

In a context where standards are rapidly evolving in Canada, choosing a system already aligned with new requirements is a strategic advantage.


HVAC installation: what our teams observe in the field

Real-life example in Longueuil

We recently installed this model in a house in Longueuil:

Initial situation:

  • Inefficient electric heating
  • Poor heat distribution between floors

Solution:

  • Installation of a FORESTAIR 36,000 BTU multi-zone heat pump
  • 2 wall-mounted units (12,000 + 18,000 BTU)

Result:

  • Uniform temperature throughout the house
  • Significant reduction in energy costs
  • Remarkable silence indoors (30-46 dB)

Essential technical details to know

Electrical data

  • Voltage: 220V
  • MCA: 22A
  • Max Breaker (MOP): 35A

Piping and installation

  • Liquid line: 1/4 inch
  • Gas line: 3/8 inch
  • Maximum total length: 80 m (263 feet)
  • Length per zone: 30 m (98 feet)

These characteristics offer great installation flexibility, particularly in existing homes where architectural constraints are frequent.

Dimensions and noise

  • Outdoor dimensions: 42.25 x 18.38 x 33.63 inches
  • Outdoor sound level: 65 dB(A)

What we learned with this model (AirGreen field feedback)

Observed strengths

  • Relatively quick installation compared to other multi-zone systems
  • Very good performance stability in winter
  • Simple WiFi interface for users
  • Few service calls after installation

Mistakes to avoid

  • Undersizing indoor units
  • Neglecting the location of the outdoor unit (sound and performance impact)
  • Not planning drainage correctly

At AirGreen, we always insist on a complete thermal analysis before installation.


Grants and return on investment

LogisVert grant

  • Amount: $3,288
  • Applicable for this ENERGY STAR® (cold climate) certified model

Real financial impact

In several projects in Laval and Montreal, our clients observe:

  • 30 to 50% reduction in heating costs
  • Return on investment between 3 and 6 years

Why choose AirGreen for your HVAC installation

Real field expertise

We don't just sell systems. We:

  • Daily install multi-zone heat pumps
  • Solve complex renovation cases
  • Optimize each installation for the local climate

Concrete advantages

  • Transparent prices (no surprises)
  • Certified and experienced technicians
  • 5M$ liability insurance
  • Personalized advice tailored to your home

Conclusion: a reliable and strategic multi-zone heat pump

The FORESTAIR MZ R454B 36,000 BTU 2-zone wall-mounted heat pump represents a solid solution for homeowners looking to:

  • Maximize their comfort
  • Reduce their energy costs
  • Adapt their system to multiple zones
  • Comply with new environmental standards

At AirGreen, we recommend this model for residential projects requiring a flexible, high-performance, and sustainable solution.


Take action with AirGreen

Are you considering an HVAC installation in Montreal, Laval, Longueuil, on the North Shore, or the South Shore?

Contact us today for:

  • A detailed quote
  • A personalized analysis of your property
  • Expert advice tailored to your situation