GREE FLEXX R32 “ADD-ON” Central Heat Pump | 3T | Case Coil

• BROCHURE

A central heat pump designed for Quebec's climate and existing buildings

At AirGreen , we've been installing and maintaining central HVAC systems long enough to know that in Quebec, a system must be designed to operate in real-world conditions , not just on paper. The ADD-ON GREE FLEXX R32 – 3-tonne central heat pump with Case Coil is one of the systems we recommend when expectations are high for winter heating , integration flexibility , and long-term stability .

This model is particularly suited to homeowners in Montreal , Laval , Longueuil , and on the North and South Shores who already have a central duct system and want to improve their comfort without starting from scratch. In practice, it's a system that addresses the needs of homes built in the 80s and 90s, as well as major renovations or the replacement of outdated equipment.

Unlike many central heat pumps that quickly show their limitations in periods of extreme cold, the GREE FLEXX R32 was designed to maintain usable heating capacity down to -30°C , a threshold we consider essential for Quebec.

The ADD-ON logic: a smart and economical approach

In many of the projects we undertake, the building already has a functional electric or gas furnace , but the air conditioning system is nonexistent, inefficient, or nearing the end of its lifespan. Rather than requiring a complete replacement, the ADD-ON configuration allows for direct and seamless integration .

Why ADD-ON configuration makes a real difference

• Complete reuse of the conduit network , after validation of its condition.

• Significant reduction in construction costs , compared to a completely new central system.

• Fewer structural changes , therefore fewer unforeseen events.

• Compatibility with dual-energy or dual-fuel systems , depending on the existing configuration.

• A gradual energy transition , ideal for homeowners who are planning for the long term.

In Laval and on the South Shore , we installed this model in homes where the furnace still had several years of service life remaining. The result is simple: efficient central air conditioning in the summer , optimized heating in the winter , and a significant reduction in overall energy consumption.

Real-world performance of the GREE FLEXX R32 – 3 tonnes

Technical figures are useless if they don't translate into real-world results. That's precisely why we test, adjust, and monitor every installation after it's been commissioned.

Measured capabilities and behavior in real-world conditions

• Rated capacity : 36,000 BTU

• Stable cooling capacity , even during prolonged heat waves

• Heating maintained down to -30°C

• Power at -8°C : approximately 22,000 BTU

• Power at -15°C : approximately 32,000 BTU

• High SEER2 , optimized for extended air conditioning seasons

• HSPF2 solid , guaranteeing good heating efficiency

• A stable COP (coefficient of performance) at negative temperatures is a key element for winter comfort.

In several residences in Montreal , we have observed a marked reduction in the use of auxiliary heating, simply thanks to proper configuration and precise sizing of the system.

R-32 refrigerant: efficiency and responsibility

The choice of R-32 is not insignificant. In our recent projects, this refrigerant has become an important criterion for clients concerned about their environmental impact, without wanting to sacrifice performance.

Concrete advantages of R-32

• Reduced global warming potential compared to older refrigerants

• Better heat transfer , therefore higher efficiency

• Lower refrigerant charge , reducing potential losses

• Compatibility with current and future standards

In several installations carried out in Boucherville and Longueuil , this choice has made it possible to reconcile energy efficiency, regulatory compliance and long-term peace of mind.

Air quality, flow rate and acoustic comfort

A central system is not simply about producing heat or cold. Comfort also depends on airflow , static pressure , uniform distribution , and noise level .

What we systematically optimize

• Airflow (CFM) adapted to the actual volume of the building

• Precise balancing of the ducts to avoid cold or overheated areas

• Controlled external noise level , around 61 dB(A)

• Discreet indoor operation , even at high speeds

• Effective dehumidification , improving comfort in summer

Incorrect settings can make any equipment uncomfortable. That's why every HVAC installation performed by AirGreen includes fine-tuning after commissioning.

Concrete feedback from AirGreen projects

Single-family home in Laval

Add-on installation on an existing electric furnace. No major changes to the ductwork. The client noticed an immediate improvement in comfort and a reduction in intensive heating cycles during cold weather.

Triplex in Montreal

Replacement of an old, inefficient central heating system. Space constraints were managed thanks to the flexibility of the Case Coil . The homeowner was able to take advantage of the $2,640 LogisVert grant , while maintaining a reliable system for years to come.

These scenarios accurately represent what we encounter each week in the field.

Subsidies and technical compliance

The ADD-ON GREE FLEXX R32 3T central heat pump is eligible for current subsidy programs, including LogisVert , when installed according to the required criteria.

At AirGreen , we take care of:

• The complete technical validation

• Preparing the required documents

• Strict adherence to electrical, mechanical, and energy standards

This approach avoids the grant refusals that we regularly see with clients who have chosen non-compliant installations.

The mistakes we systematically avoid

• Unnecessary oversizing increases short cycle times

• Poor compatibility between the outdoor unit and the Case Coil

• Ignoring the actual static pressure of the ducts

• Inadequate electrical protection ( MCA/MOP incorrectly calculated)

• No adjustments after installation

These errors negatively impact the system's lifespan and comfort. Our approach is based on precise calculations , thorough inspection, and rigorous monitoring.

Why entrust your installation to AirGreen

• Certified refrigeration technicians , specializing in central systems

• Clear and transparent pricing , confirmed before work begins

• $5M liability insurance

• Practical experience in HVAC installation in Montreal, Laval, Longueuil, North Shore and South Shore

• Structured after-sales service and HVAC maintenance advice tailored to your building

We never suggest this model automatically. We only recommend it when it truly meets the project's needs.

Take action with AirGreen

If you're looking for a reliable, high-performance ADD-ON central heat pump suited to Quebec's climate , the GREE FLEXX R32 – 3T with Case Coil deserves serious consideration. Contact AirGreen for a complete assessment of your existing system, a clear estimate, and professional installation.

Call or write to us now for a detailed quote and professional support from start to finish.