GREE FLEXX R32 “ADD-ON” Central Heat Pump | 4T | Case Coil

• BROCHURE

A central heat pump designed for Quebec buildings, not for theoretical conditions.

At AirGreen, we've been installing central heat pumps in the Greater Montreal area for years, and one thing keeps coming up: a system can boast excellent technical specifications while being poorly suited to Quebec's actual climate . The GREE FLEXX R32 "ADD-ON" Central Heat Pump | 4 Ton | Case Coil is an exception to this rule. It was designed from the ground up to meet the challenges we encounter in the field: intense cold, existing buildings, phased renovations, electrical constraints, and imperfect ductwork.

This ADD-ON model is currently one of the most versatile we install in Montreal, Laval, Longueuil, on the North Shore and the South Shore , precisely because it allows you to upgrade a core system without starting from scratch. It integrates seamlessly with existing infrastructure while delivering performance comparable to a modern core system.

A design truly adapted to harsh winters

Reliable heating down to -30°C

The ability to heat down to -30°C is not just a marketing claim. In practice, this means that the GREE FLEXX R32 4T continues to produce usable heat when many other central heat pumps reach their limits.

In our recent installations on the North Shore , particularly in areas exposed to wind and rapid temperature fluctuations, this system has demonstrated remarkable stability. Even during prolonged periods below -15°C, the heat pump maintains consistent performance, significantly reducing the need for costly backup systems.

A relevant solution for reducing dependence on traditional energy sources

Many customers contact us with a clear objective: to reduce their consumption of heating oil, gas, or direct electricity . The GREE FLEXX R32 allows precisely this transition, in a gradual and controlled manner.

Thanks to its central operation and dual-fuel capability, it can work in conjunction with an existing furnace, automatically taking over when conditions are optimal. This enables smarter energy management, tailored to tariffs and the building's actual needs.

48,000 BTU: a strategic format for supermarkets

A capacity designed for residential and multi-unit buildings

With its 48,000 BTU (4 tonnes) capacity , this central heat pump is particularly well-suited for:

• Large single-family homes

• Duplex, triplex and quadruplex

• Multi-unit residential buildings

• Light commercial buildings

In Longueuil , we recently installed this model in a triplex where the owners were looking to standardize comfort across all units while maintaining centralized control. The result was immediate: more consistent temperatures, improved air quality, and a significant reduction in complaints related to temperature variations between floors.

Optimized air distribution

With an airflow of up to 1,500 CFM , the GREE FLEXX R32 ensures efficient distribution throughout the entire ductwork. When properly calibrated—which we at AirGreen always do—it eliminates excessively hot or cold spots, a common problem in poorly balanced central systems.

Inverter technology: stability, efficiency and durability

Integrated inverter technology plays a central role in everyday comfort. Unlike traditional systems that operate in abrupt cycles, the GREE FLEXX continuously adjusts its power according to actual demand.

This translates concretely into:

• A stable indoor temperature , without sudden variations

• Better controlled energy consumption

• A reduction in wear and tear on mechanical components

• A more discreet operation , appreciated both indoors and outdoors

Several Montreal customers have mentioned to us, after a few weeks of use, a noticeable improvement in acoustic comfort compared to their old central system.

Key technical data – GREE FLEXX R32 4 Tonnes

Here are the parameters we systematically analyze before each installation:

• Rated power : 48,000 BTU

• Heating capacity down to : -30 °C

• Power at -8°C : 35,200 BTU

• Power at -15°C : 48,000 BTU

• Refrigerant : R-32 , with a lower environmental impact

• SEER2 : 17.0

• HSPF2 : 9.5

• EER2 : 11.5

• COP at -8 °C : 1.8

• Outdoor noise level : approximately 62 dB(A)

• Voltage : 220V

• MCA : 40 A

• MOP : 45 A

These values ​​only become truly meaningful when combined with rigorous installation and precise adjustment of system parameters.

The ADD-ON format: valuable flexibility in renovation

An ideal solution for existing buildings

The ADD-ON format is particularly relevant when:

• The conduits are already in place

• An existing furnace is still functional

• Mechanical space is limited

• The project aims for a gradual energy transition

In Laval , we recently installed a GREE FLEXX R32 4T in a home where the owner wanted to keep their electric furnace as a backup. This approach significantly reduced initial costs while immediately improving the overall efficiency of the system.

Intelligent and scalable integration

Unlike some rigid systems, this model allows for future developments: adding more advanced controls, optimizing the duct network or adjusting the operating mode according to the customer's lifestyle.

AirGreen Case Study – South Shore

On the South Shore , in a residence in Boucherville, we replaced an old energy-intensive central system with a GREE FLEXX R32 ADD-ON 4T .

Our intervention included:

• A complete analysis of thermal loads

• The verification and adjustment of existing ducts

• Precise balancing of airflow

• Detailed programming of the 24 VAC thermostat

After installation, the customer noticed an immediate reduction in their electricity consumption and a significant improvement in comfort, particularly in rooms far from the central core.

Common mistakes to avoid with a central heat pump

Even excellent equipment can produce poor results if it's installed incorrectly. Some of the mistakes we regularly correct include:

• Incorrect system sizing

• Poorly managed static pressure

• An unbalanced network of conduits

• Inadequate thermostat programming

At AirGreen, every project begins with a thorough technical analysis. This step is essential to ensure the GREE FLEXX R32 delivers the performance for which it was designed.

Why entrust this type of installation to AirGreen?

Installing a central heat pump is not simply a matter of installing an outdoor unit and an indoor unit. Our approach is based on:

• Extensive field expertise in central HVAC

• Qualified and experienced refrigeration technicians

• A structured and documented methodology

• $5,000,000 liability insurance

• A thorough knowledge of applicable standards and regulations

We operate daily in Montreal, Laval, Longueuil, on the North Shore and the South Shore , with a consistency and rigor that makes all the difference in the long term.

Guarantee and peace of mind

The GREE FLEXX R32 | 4T | Case Coil "ADD-ON" Central Heat Pump comes with an extended warranty on the compressor and parts, with additional options available depending on the project. An installation by AirGreen includes complete commissioning, precise adjustments, and clear documentation, ensuring long-term reliability.

A coherent and sustainable central solution for Quebec

This central heat pump is for homeowners who are looking for:

• Consistent comfort all year round

• A measurable reduction in energy costs

• A flexible and scalable solution

• A system truly adapted to the Quebec climate

Contact AirGreen

For a detailed quote , an analysis of your existing system, or technical advice tailored to your building, contact AirGreen . Our team will support you with a clear, structured, and professional approach for all your heating, air conditioning, and ventilation needs.