GREE UNIX R410A "ADD-ON" Central Heat Pump | 2T - Cased coil

• BROCHURE FR
• BROCHURE IN

A pragmatic, centralized approach to modernizing heating and air conditioning in Quebec

At AirGreen, we have been installing and optimizing central HVAC systems for many years in single-family homes, apartment buildings, and residential buildings throughout Montreal , Laval , Longueuil , and on the North and South Shores . The GREE UNIX R410A 2-ton “ADD-ON” central heat pump with coil and casing perfectly addresses a reality we observe daily: many buildings already have a functional ductwork system, sometimes coupled with a furnace that is still in good condition, but require a modern, reliable, and consistent heating and cooling solution.

This model from the UNIX series isn't designed as a "universal" heat pump to be installed anywhere, but rather as a thoughtfully designed central add-on system, engineered to integrate seamlessly with existing systems. This is precisely what makes it a strategic choice in many replacement or energy renovation projects, where the goal is to improve comfort without overhauling the entire HVAC system.

A central heat pump designed for the real Quebec climate, not a theoretical one.

High-performance heating down to -30°C: a non-negotiable requirement

In Quebec, a central heat pump must first be evaluated on its ability to maintain comfort during periods of prolonged cold. The GREE UNIX series was developed to operate stably and reliably at outdoor temperatures as low as -30°C , a threshold that reflects the climatic realities of many winters in Greater Montreal.

In our installations in Laval, on the North Shore, and in certain windier areas, this capacity translates into continuous heating without a sudden drop in performance. For the 2-tonne version (24,000 BTU) , the available power remains significant even in challenging conditions.

• Approximately 19,600 BTU at -8°C

• Approximately 21,600 BTU at -15°C

These values ​​allow the heat pump to cover a large portion of heating needs before the backup system is called upon. For homeowners, this translates to increased use of electricity rather than more expensive or polluting heating sources, where the configuration allows.

A concrete response to the historical limitations of central heat pumps

For a long time, central heat pumps suffered from a mixed reputation in cold climates. In practice, we saw poorly designed systems quickly lose efficiency, leading to overconsumption and significant dissatisfaction. The UNIX series breaks away from this pattern thanks to a design focused on:

• A variable speed compressor

• Intelligent defrosting management

• A wide operating range for heating and air conditioning

These elements, combined with rigorous installation, allow for stable performance without sudden temperature variations inside the building.

The ADD-ON concept: essential flexibility in the field

Integration with existing coil and casing

One of the major advantages of the GREE UNIX ADD-ON central heat pump is its ability to integrate with an existing system. In many homes in Montreal and Longueuil, homeowners have a relatively new central furnace but have never had central air conditioning or wish to reduce their reliance on the primary heating system.

Adding a coil WITH a casing then allows:

• To preserve the existing network of conduits

• To limit invasive work

• To reduce labor costs

• To speed up installation times

At AirGreen, this type of project is common, especially in houses with finished basements where access to ducts is restricted.

Compatible with standard 24V thermostats

The UNIX system operates with standard 24V communication , making it compatible with most central thermostats on the market. This avoids unnecessary replacements and simplifies operation for occupants.

In several projects completed on the South Shore, we were able to retain existing programmable thermostats, while significantly improving the overall performance of the HVAC system.

Key technical data – 2-tonne configuration (24,000 BTU)

For homeowners who want a clear and concrete overview of the product, here are the main features of this ADD-ON central heat pump:

• Nominal capacity : 24,000 BTU (2 tonnes)

• Heating capacity : stable operation down to -30°C

• Cooling capacity : 24,000 BTU

• Refrigerant : R-410A

• SEER2 : 14.3

• HSPF2 : 7.7

• EER2 : 10.0

• COP at -8 °C : 4.20

• Airflow (CFM) : approximately 1,500

• Dehumidification capacity : 6.03 pt/h

• Outdoor noise level : approximately 52 dB(A)

• Power supply : 220 V

• Minimum ampacity (MCA) : 24 A

• Maximum protection (MOP) : 35 A

• Piping : 3/8 – 3/4

• External dimensions : 32.25 x 18.125 x 37 in

This data must always be interpreted in the actual context of the building, taking into account the thermal load, insulation and the quality of the duct network.

For what types of projects is this system truly relevant?

Single-family homes with existing furnace

This is the most common case. The ADD-ON GREE UNIX central heat pump provides complete central air conditioning and a large portion of the annual heating, while retaining the furnace as backup during periods of extreme cold.

Duplexes, triplexes and small residential buildings

In some buildings on the South Shore and in Laval, this model is used to serve a main dwelling or a common area. Its external static pressure and airflow are well-suited to existing ductwork systems, provided they have been properly designed.

Progressive energy renovation projects

When the goal is not to replace the entire HVAC system in one step, but rather to gradually improve energy efficiency, the ADD-ON approach makes perfect sense. It allows you to spread out the investment while immediately improving comfort.

What we systematically analyze before any installation at AirGreen

A central heat pump, however efficient, will only deliver good results if it is properly installed. Before each installation, our teams check, among other things:

• The actual sizing of the conduit network

• The available static pressure

• The building's electrical capacity

• The optimal placement of the coil and the box

• The consistency between the actual thermal load and the 24,000 BTU power output

We have learned, through hundreds of projects in and around Montreal, that a poor match between equipment and existing infrastructure is the primary source of long-term dissatisfaction.

A concrete example of an installation on the North Shore

In a two-story single-family home on the North Shore, the owner had a still-functional central furnace, but wanted to add efficient air conditioning and reduce his main heating consumption.

We installed a GREE UNIX ADD-ON 2-ton central heat pump with coil and casing , integrated into the existing system. After a full season of use, the results were clear:

• Uniform temperature across all floors

• Heating is provided primarily by the heat pump down to approximately -18°C.

• Significant decrease in furnace usage

• Noise level considered very acceptable, even during peak periods

This type of field feedback corresponds exactly to the objective of this product.

Why entrust your central HVAC project to AirGreen

Choosing a central heat pump isn't just about the spec sheet. At AirGreen, we emphasize:

• Experienced refrigeration technicians

• $5,000,000 liability insurance

• Clear prices communicated before the work begins

• Extensive expertise in central HVAC retrofitting

• An active presence in Montreal, Laval, Longueuil, the North Shore and the South Shore

We always favour a realistic and building-specific approach, rather than a standardised solution.

Conclusion: a coherent and sustainable central solution

The GREE UNIX R410A 2-ton “ADD-ON” central heat pump with coil and casing represents a wise choice for homeowners who wish to improve their comfort, optimize their existing system and adapt to the climatic realities of Quebec, without undertaking unnecessary major work.

Speak to an AirGreen specialist

For a personalized analysis , a detailed quote , or to discuss your HVAC installation project in Montreal , Laval , Longueuil , on the North Shore or South Shore , contact the AirGreen team directly. We will take the time to assess your situation and offer you a solution truly tailored to your building.