Air Handler GREE FLEXX ULTRA R32 | 4 Tons - 48000 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)
A High-Performance and Flexible Central HVAC Solution for Quebec's Climate
At AirGreen, we regularly install central systems in homes and buildings in Montreal, Laval, Longueuil, the North Shore, and the South Shore, where climatic conditions impose very high demands. The GREE FLEXX ULTRA R32 4-ton (48000 BTU) Air Handler stands out as a particularly well-suited solution for local realities thanks to its ability to maintain stable performance down to -30°C.
This type of equipment is not limited to summer air conditioning. It is a central component of a complete HVAC system, capable of providing efficient heating in winter while ensuring constant comfort all year round.
Understanding the Role of an Air Handler in a Central HVAC System
An air handler (or central indoor unit) is responsible for distributing conditioned or heated air throughout the building via a duct network. Unlike wall-mounted heat pumps, this type of system is designed to:
- Supply multiple zones from a single system
- Offer uniform temperature distribution
- Integrate discreetly into existing installations
- Allow better humidity management
In the case of the GREE FLEXX ULTRA R32 model, the GUD48AH2/E-D(U) indoor unit is designed to work with a compatible central heat pump (GUD60W2/NHE-D(U)), thus forming a complete, high-energy-efficiency system.
Detailed Technical Characteristics of the GREE FLEXX ULTRA R32 (4 tons)
Capacities and Performance
- Cooling Capacity: 48,000 BTU
- Heating Capacity down to -15°C: 48,000 BTU
- Capacity at -8°C: 39,500 BTU
- Heating Range: up to -30°C
- Dehumidification: 15.01 pints/hour
- Airflow: up to 4000 CFM
These characteristics allow for optimal use in single-family homes, duplexes, or small residential buildings.
Energy Efficiency
- SEER2: up to 19
- HSPF2: up to 10.5
- EER2: approximately 12
- COP at -8°C: 3.4
These efficiency levels directly contribute to reducing energy costs, a crucial point for AirGreen customers looking to optimize their energy consumption.
Physical Data and Installation
- Dimensions (indoor): 24.81 x 21.25 x 52 inches
- Piping: 3/8 – 3/4
- Voltage: 220V
- MCA: 40A
- MOP: 45A
These specifications directly influence installation planning, especially in technical basements or confined spaces.
Remarkable Installation Flexibility for Complex Projects
One of the major strengths of the FLEXX ULTRA system lies in its installation flexibility, a determining factor in the projects we carry out in Greater Montreal.
According to technical documentation, this system allows for:
- A maximum piping length of 30 meters
- A height difference of up to 15 meters
- Compatibility with Dual Fuel (bi-energy) systems
- Use with standard 24 VAC thermostat
Real AirGreen Case – Installation in Laval
During a recent project in Laval, we installed a FLEXX ULTRA system in a house where the outdoor unit had to be placed at the back, far from the mechanical room. Thanks to this piping flexibility, we were able to avoid costly structural work, while adhering to performance standards.
Cold Climate Performance: A Decisive Advantage in Quebec
In the Montreal area and its surroundings, low-temperature heating capacity is essential. The FLEXX ULTRA system offers reliable performance down to -30°C, positioning it among the strongest options for Quebec winters.
Unlike some systems that quickly lose efficiency, this one maintains stable capacity, which:
- Reduces reliance on auxiliary heating
- Improves indoor comfort
- Optimizes energy savings
R-32 Refrigerant: A More Modern and Efficient Technology
The transition to R-32 represents a significant evolution in the HVAC industry. This refrigerant gas offers:
- Better energy efficiency
- Reduced environmental impact (lower GWP)
- Improved thermal performance
At AirGreen, we recommend this type of technology for customers wishing to invest in a sustainable system that complies with current standards.
Sound Level and Acoustic Comfort
- Indoor Unit: approximately 52 dB(A)
- Outdoor Unit: up to 63 dB(A)
These sound levels are particularly interesting for installations in dense urban environments like Montreal or Longueuil, where acoustic comfort is an important criterion.
Available Subsidies and Profitability
This model is eligible for Hydro-Québec’s LogisVert program, with a subsidy that can reach:
- $4740 (updated November 2025)
This significantly reduces the installation cost, improving the return on investment.
At AirGreen, we systematically assist our clients with:
- Eligibility validation
- Required documentation
- Complete submission
AirGreen Installation: Field Expertise and Technical Precision
Real Example – Longueuil (South Shore)
In a triplex in Longueuil, we replaced an inefficient old central system with a GREE FLEXX ULTRA 4-ton. The challenges included:
- A confined space for the air handler
- Existing ducts to adapt
- Complex drainage management
Result:
- Significant improvement in thermal comfort
- Reduction in energy bills
- Much more uniform air distribution
Common Mistakes to Avoid
When installing a central system:
- Undersizing BTU capacity
- Neglecting duct quality
- Incorrectly sizing the electrical supply
- Ignoring drainage constraints
At AirGreen, every project includes a complete technical analysis to avoid these errors.
Connectivity and Modern Features
- Optional WiFi (or included depending on configuration)
- Integrated A2L leak detection
- Compatible with smart systems
These features allow for better system control and more proactive maintenance.
Why Choose AirGreen for Your HVAC Installation?
We operate daily in Montreal, Laval, Longueuil, the North Shore, and the South Shore, with an approach based on:
- Detailed technical analysis before submission
- Complete price transparency
- Certified and experienced installers
- 5M$ liability insurance
Our experience with GREE FLEXX ULTRA systems allows us to optimize each installation according to the actual constraints of the building.
Conclusion: A Reliable Central Solution Adapted to Quebec
The GREE FLEXX ULTRA R32 4-ton (48000 BTU) Air Handler is a comprehensive solution for properties requiring a high-performance, flexible, and efficient central system.
Its ability to operate in cold climates, combined with excellent energy efficiency and great installation flexibility, makes it a strategic choice for discerning homeowners in Greater Montreal.
Contact AirGreen for a Personalized Quote
To obtain a detailed estimate, validate eligibility for subsidies, or schedule an installation, please contact our team directly. We will guide you through each step to ensure an HVAC solution perfectly suited to your project.