FORESTAIR E-TECH+ Electric Furnace | 4 Tons - 48,000 BTU

In stock
SKU: 217903147
Provincial Subsidy (LogisVert): 5760 $ (Updated: November 26, 2025)
Model Number: FA-H48-VKCE/AH-454
AHRI: 217903147
Works with the Central Heat Pump: FA-H48-VKCE/OD-454
ENERGY STAR: Yes
ENERGY STAR (COLD CLIMATE*): Yes / Yes
# ENERGY STAR ID: 4515649
Heating Capacity (Heat Pump): -25 °C
Cooling Capacity: 48,000 BTU
Gas (Freon): R-454B
WiFi: Optional

SEER2 (Seasonal Air Conditioning Efficiency)

1 17.5 30

HSPF2 (Seasonal heating efficiency)

1 9.8 15

EER2 (Instantaneous efficiency in air conditioning)

1 11.0 20

COP at -8 °C (Heating energy efficiency)

1 2.25 3
Size: 4 Tons
Nominal Power: 48,000 BTU
Power at -8°C: 48000 BTU
Power at -15°C: 36000 BTU
Interior Dimensions (L x D x H): 22.04 x 24 x 54.53 in
Dehumidification: 9.88 pt/h
Sound Pressure Level (Indoor): 63 dB(A)

CFM (Airflow)

1 1754
External Dimensions (L x W x H): 40.55 x 14.95 x 52.52 in
Piping: 3/8 - 3/4
Sound Pressure Level (Exterior): 58.0 dB(A)
Voltage: 220 V
MCA (Minimum Circuit Ampacity): 45 A
MOP (Maximum Overcurrent Protection): 50 A
Warranty (Compressor - Parts - Labor): 10-10-0 years
Additional Warranty: Possible

A High-Performance Central Solution Designed for Quebec Winters

At AirGreen, we regularly install central systems capable of meeting the rigorous climatic demands of Greater Montreal. The FORESTAIR E-TECH+ 4-ton (48,000 BTU) electric furnace stands out as a complete, high-performance solution perfectly suited for residential and multi-dwelling properties in Montreal, Laval, Longueuil, on the North Shore, and the South Shore.

This central system, combined with a compatible heat pump, offers stable performance down to -25°C, while maintaining high energy efficiency thanks to its modern R-454B refrigerant and advanced components.


Understanding the Technology Behind the FORESTAIR E-TECH+ 48,000 BTU

A Central System Designed for Versatility

One of the most appreciated aspects by our technical teams during installations is the flexibility of this unit. The casing is designed to adapt to several configurations:

  • Standard vertical (upflow) installation
  • Possible conversion to horizontal left/right
  • Downflow or counterflow configuration

This adaptability is essential in often-restricted Montreal basements or in renovation projects on the South Shore.

According to the manufacturer's technical data, this unit uses a variable-speed ECM motor (5 speeds), allowing for precise airflow control and better thermal comfort management.


Energy Performance and Actual Capacities

Here are the key characteristics that directly influence system performance:

  • Cooling capacity: 48,000 BTU
  • Capacity range: 20,500 to 51,000 BTU
  • SEER2: 17.5
  • EER2: 11.0
  • HSPF2: 9.8
  • COP at 8°C: 3.80

In practice, this means:

  • Effective air conditioning even during peak summer heat in Montreal
  • Efficient heating in winter, reducing reliance on additional electric elements
  • Optimized energy consumption, essential for maximizing subsidies like LogisVert

Advanced Humidity Management and Indoor Comfort

One point often overlooked by homeowners is humidity control. This unit offers:

  • Dehumidification capacity of 9.88 pints/hour
  • An A-coil optimized to improve heat exchange and dehumidification

In several installations carried out in Longueuil and Laval, we have observed a significant improvement in indoor comfort, particularly in homes with finished basements or persistent humidity.


HVAC Installation: What We See in the Field

Real-World Example in Boucherville (South Shore)

In a recent project, our team replaced an inefficient old central system in a 2-story house. The main challenges were:

  • Limited mechanical space
  • Partially outdated existing ducts
  • Poor airflow on the second floor

Thanks to the FORESTAIR E-TECH+ 4 tons, combined with duct adjustments:

  • Airflow was balanced thanks to the ECM motor
  • Noise was reduced (maximum 63 dB indoors)
  • Energy consumption significantly decreased

Result: homogeneous comfort throughout the house, summer and winter.


Critical Technical Points During Installation

At AirGreen, we emphasize several essential elements:

1. Precise Sizing

A 48,000 BTU (4-ton) unit must be chosen according to:

  • The area
  • Insulation
  • Duct configuration

Incorrect sizing can lead to overconsumption or premature wear.

2. Refrigerant Piping

  • Size: 3/8 – 3/4
  • Maximum length: 45 meters (150 feet)

We systematically check these parameters to ensure optimal performance.

3. Electrical Installation

  • Voltage: 220V
  • MCA: 45A
  • Recommended breaker: 50A

A compliant installation is essential for safety and warranty.


Concrete Benefits for Homeowners in Quebec

Adapted to Harsh Winters

The heating capacity down to -25°C allows it to cover a large part of the winter season without constant reliance on supplemental heating.

Compatible with Subsidies

This model is eligible for programs like LogisVert, with a subsidy that can reach $5760, significantly reducing the initial cost.

Eco-friendly R-454B Refrigerant

Compared to older gases:

  • Reduced environmental impact
  • Better energy efficiency
  • Compliance with modern standards

Reliability and Durability: What We Observe at AirGreen

In our installations in Montreal and Laval, FORESTAIR systems stand out for:

  • Robust commercial-grade construction
  • Corrosion-resistant drain pans
  • Internal insulation that limits energy losses

These elements reduce HVAC maintenance needs and extend the system's lifespan.


Common Mistakes to Avoid with This Type of System

Underestimating the Importance of Ducts

Even the best furnace won't compensate for poorly designed ducts. We often correct:

  • Static pressure losses
  • Air leaks
  • Poor balancing

Neglecting HVAC Maintenance

Regular maintenance allows for:

  • Maintaining energy efficiency
  • Avoiding costly breakdowns
  • Ensuring optimal air quality

Installing Without Specialized Expertise

Central systems require real expertise. Our certified refrigeration technicians ensure:

  • RBQ-compliant installation
  • Optimal commissioning
  • Post-installation follow-up

Why Choose AirGreen for Your Installation

We don't just sell a product. We offer a complete solution:

  • Detailed analysis of your property
  • Precise sizing
  • Professional installation
  • Post-installation follow-up

Our teams operate throughout:

  • Montreal
  • Laval
  • Longueuil
  • North Shore
  • South Shore

Every project is handled with rigor, without compromising on quality.


Conclusion: A Powerful and Cost-Effective Central Solution

The FORESTAIR E-TECH+ 4-ton - 48,000 BTU electric furnace represents an excellent choice for homeowners looking for:

  • Heating and cooling performance
  • Long-term reliability
  • Compatibility with subsidies
  • Adaptability to complex installations

With a well-executed HVAC installation, this system offers constant comfort and lasting efficiency, even in Quebec's climatic conditions.


Contact AirGreen

To obtain a precise quote, an analysis of your current system, or personalized advice, contact our team directly. We will guide you to the most suitable solution for your property, with a transparent and professional approach.