GREE FLEXX R32 "ADD-ON" Central Heat Pump | 3T | Cased Coil

• BROCHURE: FRENCH
• BROCHURE: ENGLISH
• DRAWINGS: FRENCH
• DRAWINGS: ENGLISH

A central heat pump designed to intelligently integrate with existing systems

The ADD-ON GREE FLEXX R32 3-ton central heat pump with cased coil was designed to address a common reality in Quebec: buildings with functional but energy-intensive central systems that are expensive to operate or have become insufficient in the face of harsh winters and increasingly hot summers. At AirGreen, we install this model specifically for clients who want to improve their comfort and reduce energy costs without completely rebuilding their HVAC system.

Whether in a single-family home in Montreal, a duplex in Laval, a triplex in Longueuil, a multi-generational residence on the North Shore, or an income property on the South Shore, this ADD-ON heat pump coherently integrates with an existing furnace, while providing modern and measurable performance.

The ADD-ON concept: simple in theory, demanding in practice

An ADD-ON heat pump does not replace the existing central system; it intelligently complements it. Specifically, the GREE FLEXX acts as the primary heating and cooling source when conditions are favorable, while allowing the existing system to take over during extreme conditions or for specific needs.

This approach offers several real advantages:

• Significant reduction in heating costs

• Less wear and tear on the existing furnace

• Progressive energy transition

• Controlled initial investment compared to a complete replacement

However, this configuration requires in-depth knowledge of airflow, static pressures, operating sequences, and control logic. It is precisely in this type of project that AirGreen distinguishes itself through its rigorous and methodical approach.

Heating performance designed for Quebec winters

Efficient heating down to -30 °C, without instability

The GREE FLEXX R32 3T is designed to maintain stable performance down to -30 °C, an essential feature in Greater Montreal where periods of intense cold can last several days or even weeks.

In our installations in Terrebonne, Blainville, Repentigny, and Saint-Hubert, we observe consistent heating capacity, without sudden indoor temperature variations or excessive cycling.

Key thermal characteristics:

• Nominal capacity: 36,000 BTU

• Output at -15 °C: 32,000 BTU

• Output at -8 °C: 22,000 BTU

• COP at -8 °C: 11.83

These values concretely translate into optimized electrical consumption, reduced demand on the auxiliary system, and more uniform thermal comfort throughout the building.

Reliable central air conditioning and humidity control

Consistent summer comfort, even during heatwaves

In cooling mode, the GREE FLEXX 3-ton central heat pump offers a capacity of 36,000 BTU, ideal for medium to large residences as well as many multi-unit buildings.

Performance indicators:

• SEER2: 16.03

• EER2: 11.02

• Dehumidification: 11.26 pints/hour

In several projects carried out in Verdun, Lasalle, and on the South Shore, this dehumidification capacity has proven crucial for improving indoor air quality, reducing the feeling of heavy air, and stabilizing perceived temperature, even during high heat combined with high humidity.

The cased coil: an often underestimated central element

The strategic role of the GCAC36F/NHA coil

The GCAC36F/NHA cased coil is much more than a simple accessory. It forms the thermal junction between the outdoor unit and the existing air distribution network.

Its concrete advantages:

• Compact size facilitating integration into confined mechanical spaces

• Copper tubes and aluminum fins with anti-corrosion coating

• Compatibility with different types of furnaces and exchangers

• Dimensions suitable for residential and multi-unit installations

In several modernization projects in Ahuntsic, Laval-Ouest, and Brossard, this coil has helped avoid major duct modifications, thus reducing installation costs and delays.

INVERTER technology: stability, quiet operation, and longevity

A truly useful variable-speed compressor

The INVERTER technology integrated into the GREE FLEXX continuously adjusts the compressor's power according to the building's actual demand. Unlike on/off systems, this fine modulation offers several concrete benefits:

• More stable indoor temperature

• Reduced consumption peaks

• Reduced mechanical wear

• Controlled noise level (61 dB(A) outdoors)

In dense urban environments like Rosemont, Villeray, or certain areas of Longueuil, this noise level is a significant advantage, both for occupants and neighbors.

R-32 refrigerant: efficiency and long-term vision

The choice of R-32 is not insignificant. This refrigerant offers:

• A lower global warming potential than previous generations

• Better overall energy efficiency

• Increased compliance with current and future environmental standards

For owners concerned about the longevity of their investment, this means fewer risks of regulatory obsolescence and better long-term value for the HVAC system.

ADD-ON installation: common mistakes we avoid

The problems we most often correct

During service calls on existing installations, we regularly encounter:

• Poorly sized systems

• Inadequate airflow

• Poor coordination between the heat pump and the furnace

• Absence of condensate pan heating

• Unsuitable defrost settings

The GREE FLEXX nevertheless integrates advanced functions:

• Smart pan heating

• Smart defrost

• Compressor preheating

• Integrated self-diagnosis

• Power failure memory recovery

At AirGreen, every installation includes precise and personalized adjustments, based on the actual building configuration, occupancy, lifestyle habits, and existing mechanical constraints.

LogisVert subsidy: a significant financial lever

This heat pump is eligible for the LogisVert provincial subsidy of $2,640 (according to current criteria).

In the majority of residential projects, this aid allows for:

• Significant reduction in the net project cost

• Faster return on investment

• Making the energy transition more accessible

We systematically guide our clients through understanding and preparing the necessary steps to avoid common administrative errors.

Warranty and long-term reliability

• Compressor warranty: 12 years

• Parts warranty: 12 years

• Labor warranty: 0 years (extension possible)

AirGreen always advises its clients on extended warranty options, particularly for central systems where long-term reliability is a major concern.

Why entrust your project to AirGreen

Choosing AirGreen is not just about buying a heat pump. It's about benefiting from:

• A complete analysis of the existing system

• Rigorous sizing

• Installation compliant with RBQ standards

• Precise adjustment of flows and pressures

• Structured and accessible after-sales service

Our installations in Montreal, Laval, Longueuil, on the North Shore, and the South Shore are based on a coherent approach: delivering a central system that is truly functional, durable, and adapted to the building's reality, not to a theoretical scenario.

A balanced, modern, and durable central solution

The ADD-ON GREE FLEXX R32 3T central heat pump with cased coil represents a particularly relevant solution for modernizing an existing HVAC system without compromising on performance, comfort, or reliability.

When correctly installed and adjusted, it transforms a traditional central system into an efficient, stable, and perfectly adapted solution for the Quebec climate.

Contact AirGreen now for a personalized evaluation, a clear quote, and an HVAC installation carried out according to the best practices in the industry.