Gree FLEXX ULTRA R32 Central Heat Pump | 4 Tonnes | Montreal, South Shore, Montérégie

• Official Brochure: FRENCH
• Official Brochure: ENGLISH

A central heat pump designed for the climatic and architectural realities of Quebec

At AirGreen Air Conditioning & Heating , we never select a central system solely based on a technical specification sheet. Every model we regularly install must have proven itself in the field , in real houses and buildings, subjected to harsh winters, humid summers, and the typical building constraints of Montreal, Laval, Longueuil, the North Shore, and the South Shore .

The Gree FLEXX ULTRA R32 Central Heat Pump – 4 tonnes is one of those systems that we consider a serious, stable and consistent solution for residential and light commercial projects where long-term reliability is non-negotiable.

This model wasn't designed to impress on paper alone. It was conceived to operate consistently , year after year, in sometimes extreme weather conditions, while offering considerable installation flexibility in existing or renovated buildings.

A heating capacity truly adapted to Quebec winters

Efficient heating down to -30°C, without compromise

One of the most important criteria when choosing a central heat pump in Quebec remains its ability to heat efficiently in very cold weather. The Gree FLEXX ULTRA R32 stands out for its thermal stability when the temperature drops sharply.

Specifically, this model offers:

• Heating capacity down to -30°C

• A sustained output of 39,500 BTU at -8°C

• A full output of 48,000 BTU at -15°C

In practice, this means the system continues to provide comfortable heating even on the coldest nights, without relying excessively on supplemental heating. For many of our clients on the South Shore and in the Montérégie region , this has resulted in a stable home temperature of 21–22°C, even during periods of intense cold.

Reduction in the use of auxiliary systems

When a central heat pump is poorly designed, it can quickly become energy-intensive by frequently activating electric heating elements. With the Gree FLEXX ULTRA R32, we observe:

• A significant reduction in the activation of auxiliary elements

• Improved thermal consistency across multiple floors

• More predictable electricity consumption during the winter

Balanced and realistic energy performance

Consistent seasonal yield

The performance values ​​of this system are not based on idealized scenarios. They correspond to what we actually measure after installation in buildings occupied year-round.

• SEER2: 18.0

• HSPF2: 10.5

• EER2: 11.7

• COP at -8 °C: 3.4

These performance levels allow for an excellent balance between comfort and operating costs, particularly in urban areas like Montreal , where heating and cooling needs are significant but variable.

Choosing R-32 refrigerant: a logical technical and environmental decision

Why R-32 is gradually becoming the standard

R-32 is now recognized as a natural evolution of refrigerants used in HVAC. Compared to older gases, it offers:

• A reduced environmental impact

• Improved energy efficiency

• Less refrigerant is needed for equivalent performance

In an evolving regulatory context, this choice allows owners to invest in a sustainable system, compatible with current and future standards.

Safety and suitable design

The Gree FLEXX ULTRA R32 incorporates safety devices adapted to this type of refrigerant, including leak detection sensors, ensuring safe use in both residential and light commercial environments.

Summer comfort: stable air conditioning and efficient humidity management

A truly uniform central air conditioning system

With a cooling capacity of 48,000 BTU and an airflow of up to 4,000 CFM , this system is particularly effective for:

• Open-plan houses

• Multi-story buildings

• Properties where certain parts are historically more difficult to cool

We are seeing a more uniform air distribution, reducing temperature differences between zones.

Dehumidification: a key factor in comfort

The dehumidification capacity of 15.01 pints per hour plays a major role in comfort during the Quebec summer. In several installations in Longueuil and on the North Shore , this performance has enabled:

• To reduce the feeling of heavy air

• To improve comfort without over-air conditioning

• To limit the risk of condensation in basements and less ventilated spaces

Installation flexibility and compatibility with existing systems

24V thermostat and simplified integration

Compatibility with a standard 24V thermostat greatly simplifies:

• Replacing old central systems

• Integration into existing conduit networks

• Coexistence with dual-energy systems or existing furnaces

This represents a concrete advantage for HVAC renovation projects, which are very common in Montreal and Laval .

Adaptation to site constraints

The Gree FLEXX ULTRA R32 allows:

• A length of piping that can reach up to 30 m

• A difference in elevation of up to 15 m between the units

These features are particularly useful in urban settings where the location of the outdoor unit is often constrained by available space, municipal regulations, or building configuration.

Concrete feedback from AirGreen projects

Single-family home – Boucherville

In a residence of over 2,800 sq ft, the client wanted to replace an old electric furnace that had become expensive to operate. After a complete thermal analysis, we recommended a Gree FLEXX ULTRA R32 4-tonne furnace , retaining the existing ductwork.

After a full winter:

• Stable heating on two floors

• No discomfort during cold spells

• Measured reduction in overall electricity consumption

Urban Plex – Montreal

In a duplex-type building, the priority was acoustic comfort and reliability. The system's controlled noise level and its ability to efficiently serve two units significantly improved occupant comfort without major structural modifications.

LogisVert subsidy: an important financial lever

The Gree FLEXX ULTRA R32 4-tonne Central Heat Pump is eligible for Hydro-Québec's LogisVert program , with a subsidy of up to $4,740 , subject to current conditions.

At AirGreen , we support our clients at every stage:

• Validation of eligibility

• Preparation of technical documents

• Support during the application process

This approach helps avoid common mistakes that delay or jeopardize obtaining the grant.

Warranty, maintenance and long-term durability

The Gree FLEXX ULTRA R32 benefits from an extended warranty on the compressor and parts , with additional options depending on product registration.

However, the actual longevity of a central system largely depends on:

• The quality of the installation

• Precise airflow adjustment

• Regular HVAC maintenance

At AirGreen, we implement maintenance procedures tailored to central systems to preserve their performance and reliability over the long term.

Why choose AirGreen for this type of project?

Installing a central heat pump of this size requires much more than just a simple connection. At AirGreen Air Conditioning & Heating , we offer:

• A thorough thermal analysis

• Proven expertise in Quebec conditions

• Transparent pricing , communicated before work begins

• Certified and insured technicians worth $5,000,000

Each installation is designed as a complete system, adapted to the building and the actual habits of the occupants.

Conclusion

The Gree FLEXX ULTRA R32 Central Heat Pump – 4 tonnes represents a robust, balanced and durable solution for homeowners who are looking for constant comfort, summer and winter, without compromising on reliability.

Are you considering a central HVAC installation in Montreal, Laval, Longueuil, on the North Shore or the South Shore?
Contact AirGreen Air Conditioning & Heating today for a detailed assessment, a clear quote and professional support, from the initial diagnosis to full commissioning.