GREE UNIX R32 Central Heat Pump – 3 Tons - 36,000 BTU

• Official Brochure: FRENCH
• Official Brochure: ENGLISH

A central heat pump designed to last in Quebec's most demanding climatic conditions

At AirGreen, we install and analyze central HVAC systems daily, in real-world, sometimes complex, and often demanding contexts. The GREE UNIX R32 – 3-tonne (36,000 BTU) central heat pump is one of the systems we consider truly suitable for residential and multi-unit buildings in Quebec, particularly in Montreal , Laval , Longueuil , and on the North and South Shores .

This model was not designed to meet ideal laboratory conditions. It was designed to operate stably, predictably, and efficiently during prolonged cold spells, frequent freeze-thaw cycles, and periods of high summer humidity. In our field experience, these are precisely the conditions that put central systems to the test.

The UNIX R32 series corrects a problem we've long observed with some central heat pumps: a rapid loss of efficiency as soon as the temperature drops below -15°C. Here, the system maintains its heating capacity down to -30°C , which significantly changes how a house is heated in the depths of a Quebec winter.

Real and measurable performance: beyond marketing figures

A capacity suitable for medium to large-sized homes

• Rated power : 36,000 BTU (3 tonnes)

• Heating capacity at -8°C : 28,200 BTU

• Heating capacity at -15°C : 34,000 BTU

These values ​​are crucial. In practice, they mean the system continues to heat efficiently without prematurely triggering supplemental electric heating. For many homeowners we've assisted in Laval and on the North Shore, this has resulted in significantly improved thermal stability and reduced peak energy consumption during the winter.

Seasonal energy efficiency

• SEER2: 18.0

• HSPF2: 10.0

• COP at -8 °C: 3.60

These efficiency levels place the GREE UNIX R32 in a very competitive category for a central heat pump of this capacity. In practical terms, this means that for every kilowatt of electricity consumed, the system delivers several times that energy in the form of heat, even at low outdoor temperatures.

Dehumidification: an often overlooked but crucial factor

A dehumidification capacity of 11.26 pints per hour plays a fundamental role in summer comfort. In several areas of Longueuil , Brossard , and Montreal East , we encounter buildings where the air conditioning works properly, but where the humidity remains uncomfortable.

In these cases, a central heat pump capable of efficiently managing humidity allows for:

• A faster feeling of freshness

• A reduction in compressor operating time

• Increased comfort without excessively lowering the temperature

This is an aspect that our customers often notice within the first few weeks of use.

R32 refrigerant: a technical choice, not just an environmental one

R32 is not simply a change in standards. In our installations, it offers several concrete advantages:

• Better heat exchange, therefore shorter cycles

• Reduced refrigerant quantity compared to R410A

• Less mechanical stress on the compressor

• Increased compatibility with future environmental guidelines

In addition, there is the presence of an integrated leak detector , a safety feature that is becoming increasingly important in modern installations, particularly in enclosed spaces or multi-story buildings.

Installation flexibility: a major advantage in renovation and replacement

The GREE UNIX R32 central heat pump stands out for its great integration flexibility . At AirGreen, we have installed it in a variety of settings:

• Retrofitting existing ducts

• Integration with an existing electric or gas furnace

• Installation with coil in a box

• Use of standard 24V thermostats

• Compatibility with RS485 communication

This flexibility often makes it possible to avoid costly modifications to the conduit network, which represents a significant financial advantage for owners of existing homes in Montreal and on the South Shore.

Acoustic comfort: an essential criterion in urban environments

• Indoor noise level: 51 dB(A)

• Outdoor noise level: 61 dB(A)

In densely populated neighborhoods, noise quickly becomes an issue. In projects carried out in condominiums and plexes, this noise level has helped to avoid complaints, subsequent adjustments, or the addition of soundproofing devices.

LogisVert subsidy: a concrete financial lever

The GREE UNIX R32 – 3-tonne central heat pump is eligible for Hydro-Québec's LogisVert program, with financial assistance of up to $3,384 .

At AirGreen, we regularly observe that:

• Incomplete documentation leads to delays

• Incorrect model matching can lead to rejection

• A non-compliant installation compromises eligibility

That is why we support our clients at every stage, from technical validation to the submission of the application.

Feedback from the field: what our customers are actually seeing

In Boisbriand , a single-family home previously heated with natural gas was converted to a 3-ton GREE UNIX R32. After a full winter:

• Stable temperature throughout the rooms

• Significant reduction in energy costs

• No discomfort during periods below -20°C

In Montreal East , in a duplex with existing ductwork, the installation was completed without major modifications. The client primarily noticed a significant improvement in air quality and a reduction in humidity during the summer.

Common mistakes that we systematically avoid

Our experience has taught us to avoid several common pitfalls:

• Sizing based solely on surface area, without thermal analysis

• Ignore the static pressure of the ducts

• Underestimating the importance of dehumidification

• Ignoring electrical parameters ( MCA 28 A / MOP 30 A )

Each AirGreen installation is based on a complete analysis of the building, not on a generic approach.

Warranty and protection options

• Compressor: 10 years

• Parts: 10 years

• Labor: 0 years (options available)

For customers who want maximum peace of mind, especially in multi-unit dwellings, we offer warranty extensions tailored to the actual use of the system.

Why entrust your HVAC project to AirGreen

• Certified and experienced refrigeration technicians

• $5,000,000 liability insurance

• Clear pricing, no surprises

• Strong local presence: Montreal, Laval, Longueuil, North Shore , South Shore

• Post-installation follow-up and structured service

We do not offer generic systems. We install solutions that are consistent with the realities of the building and the long-term expectations of the owners.

Take action

If you are considering installing a GREE UNIX R32 – 3-tonne central heat pump , contact AirGreen Air Conditioning & Heating directly. We will take the time to analyze your building, your ductwork, your actual needs, and available subsidies to offer you a reliable, durable, and properly sized central HVAC solution.

Telephone: 514-316-2973
Email: sales@airgreen.ca