GREE UNIX R32 "ADD-ON" Central Heat Pump | 3T | Coil in a Box

• BROCHURE: FRENCH
• BROCHURE: ENGLISH

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

At AirGreen, we install central HVAC systems in a wide variety of settings: single-family homes, duplexes, multi-unit dwellings, multigenerational buildings, and light commercial buildings. Over time, one constant has become clear: in Quebec, a central heat pump must offer much more than just a good spec sheet. It must be reliable in real-world conditions, perform well during periods of extreme cold, be flexible in installation, and be compatible with existing systems.

The GREE UNIX R32 | 3T | Casing "ADD-ON" Central Heat Pump precisely meets these requirements. This model was designed to integrate seamlessly into HVAC replacement or upgrade projects, without requiring a complete system rebuild. It's a solution we frequently recommend in Montreal, Laval, Longueuil, and on the North and South Shores of Montreal, when the goal is to improve comfort and energy efficiency while controlling costs.

An ADD-ON approach that makes all the difference

The ADD-ON concept is central to this configuration. Unlike many central heat pumps that require complete replacement of the indoor equipment, this system allows integration with:

• an existing furnace (electric or other);

• a network of conduits already in place;

• a standard 24V thermostat;

• a box-enclosed coil designed for optimal mechanical compatibility.

In practice, this means less invasive work, fewer structural modifications, and faster installation. For many homeowners, particularly in homes built between the 1980s and 2000s, this flexibility represents a major advantage.

At AirGreen, we regularly meet customers who want to upgrade their central heating without compromising the reliability of their current system. The GREE UNIX R32 ADD-ON enables precisely this gradual transition to a more modern and efficient solution.

Heating performance: designed for harsh winters

One of the historical challenges of central heat pumps has always been their performance at very low temperatures. The UNIX R32 series was developed to address this North American reality.

This central heat pump is designed to maintain stable heating capacity down to -30°C , making it a perfect solution for winters in Montreal and surrounding areas. Thanks to its DC Inverter technology and two-stage, two-cylinder compressor , the system precisely adjusts its output to match the building's actual heating needs.

In practical terms, this translates to:

• a more stable indoor temperature;

• fewer uncomfortable fluctuations;

• a reduction in start-up cycles;

• improved energy efficiency over the entire heating season.

In several installations carried out by AirGreen on the North Shore, particularly in areas more exposed to wind and cold, this modulation capacity has proven crucial for occupant comfort.

Capacity and sizing adapted to Quebec homes

The 3-tonne (36,000 BTU) version of the GREE UNIX R32 is well-suited to the needs of many medium to large single-family homes. Sizing is something we always analyze rigorously at AirGreen, because an oversized or undersized central heat pump can negatively impact the overall performance of the system.

Here are some key details for this configuration:

• Cooling capacity : 36,000 BTU

• Rated heating output : approximately 35,000 BTU

• Power at -8°C : 22,000 BTU

• Power at -15°C : 32,000 BTU

• SEER2 : 18.0

• HSPF2 : 10.0

• EER2 : 12.5

• COP at -8 °C : up to 3.6

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

These performances not only allow for excellent comfort, but also a tangible reduction in annual electricity consumption, particularly in heating mode.

An ideal solution for HVAC renovation projects

The GREE UNIX R32 ADD-ON Central Heat Pump is particularly relevant for renovation projects. In several homes in Laval and Longueuil, we have found that a complete replacement of a central system is not always necessary or desirable.

The GCAC36F/NhA boxed coil integrates directly into the existing air distribution system. This configuration allows:

• to limit the work on the conduits;

• to reduce labor costs;

• to accelerate commissioning;

• to maintain an unchanged interior aesthetic.

This approach is often preferred by homeowners who want measurable energy improvements without undertaking major renovations.

Efficient and even central air conditioning

During the summer months, air conditioning performance is just as important. With its 36,000 BTU cooling capacity and an airflow rate suitable for central systems, the GREE UNIX R32 ensures a consistent temperature throughout the house.

Unlike some wall-mounted or hybrid solutions, central air conditioning prevents temperature differences between floors. In multi-level or open-concept homes, this is a significant advantage that our clients particularly appreciate.

Acoustic comfort and integrated safety

Noise level is an often underestimated factor when choosing a central heat pump. This model has an outdoor sound pressure level of approximately 61 dB(A) , making it suitable for dense residential environments.

Furthermore, safety is not overlooked. The indoor units are equipped with a refrigerant leak detector , a reassuring feature for families and landlords. This functionality contributes to the safe and sustainable operation of the system.

Intelligent management and control compatibility

Compatibility with standard 24 VAC thermostats greatly simplifies daily use. Occupants don't have to learn complex new control logic, while still benefiting from advanced technology in the background.

The Wi-Fi option, when added, also allows remote management of the system, which is particularly appreciated by owners who are away part of the year or by property managers.

Subsidies and return on investment

The GREE UNIX R32 3T Central Heat Pump is eligible for the LogisVert provincial grant of up to $2,640 , subject to applicable conditions. At AirGreen, we systematically assist our clients in verifying their eligibility and preparing the required documentation.

In several projects carried out on the South Shore, the return on investment proved particularly attractive thanks to:

• reducing heating costs;

• the reduction in the use of backup systems;

• the improvement of property value;

• access to financial assistance programs.

Why entrust the installation to AirGreen

A high-performance central heat pump requires rigorous installation. Sizing, air balancing, electrical configuration ( MCA 28 A, MOP 30 A ), refrigerant connection quality, and commissioning are crucial for long-term reliability.

At AirGreen, we distinguish ourselves by:

• a thorough technical analysis before each project;

• certified and experienced refrigeration technicians;

• clear and agreed-upon prices before work begins;

• Proven expertise in central HVAC installation in Montreal, Laval, Longueuil, North Shore and South Shore.

We favour solutions adapted to the actual building, and not standardised configurations that neglect the particularities of each property.

Guarantee and peace of mind

The 10-year warranty on the compressor and parts provides a solid foundation. Depending on the project and the client's objectives, additional warranty options can be considered to secure the long-term investment.

Conclusion and next steps

The GREE UNIX R32 | 3T | Casing Coil "ADD-ON" Central Heat Pump represents a complete, flexible, and high-performance solution for homeowners looking to upgrade their HVAC system without compromise. It stands out for its performance in cold climates, its compatibility with existing installations, and its excellent energy efficiency.

To obtain a personalized quote , check your eligibility for LogisVert subsidies or discuss your HVAC project with an expert, contact AirGreen Air Conditioning & Heating now.

📞 514-316-2973
📧 sales@airgreen.ca

Our team will be happy to assist you at every stage, from the initial analysis to the final installation.