MIDEA EVOX G3 “ADD-ON” Central Heat Pump | 2.5T R454B
SEER2 (Seasonal Air Conditioning Efficiency)
HSPF2 (Seasonal heating efficiency)
EER2 (Instantaneous efficiency in air conditioning)
COP at -8 °C (Heating energy efficiency)
CFM (Airflow)
A central heat pump designed for Quebec's climatic realities
At AirGreen , we have been installing HVAC systems throughout Montreal , Laval , Longueuil , and on the North and South Shores for many years. The ADD-ON MIDEA EVOX G3 2.5-tonne central heat pump with R-454B refrigerant is one of the solutions we recommend when expectations are high: reliable heating in harsh winters, stable cooling in summer, compatibility with existing installations, and measurable energy efficiency.
This model isn't designed for a theoretical scenario. It's intended to replace or supplement an existing central heating system, often in homes already equipped with ductwork, and sometimes with an older gas or electric furnace. It's precisely in these contexts that we've installed it on numerous occasions, notably in single-family homes in Laval and renovated duplexes in Longueuil.
Actual performance in central heating and air conditioning
Heating down to -30°C, without compromise
The MIDEA EVOX G3 central heat pump is Cold Climate certified, with a continuous operating capacity down to -30°C . In practice, this means that the system continues to produce heat even during the cold snaps we regularly experience in Quebec.
On this 2.5 T (30,000 BTU) model:
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Rated power: 30,000 BTU
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Power at -8°C : 25,000 BTU
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Power at -15°C : 32,000 BTU
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COP measured at -8 °C : 1.85+ , which remains efficient for a central heat pump in severe winter conditions.
During a recent installation in Boucherville , the client previously used a backup electric heating system that activated continuously as soon as temperatures dropped to -12°C. After the installation of the EVOX G3, the backup heating elements only activate in the event of prolonged extreme cold, which reduced overall electricity consumption from the very first month.
Stable and even air conditioning
In cooling mode, the 30,000 BTU capacity effectively covers an average-sized home with existing ductwork. Unlike many older central systems, the EVOX G3 automatically adjusts its airflow and power, minimizing temperature differences between floors.
We regularly observe:
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A more uniform temperature in the upstairs rooms
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Fewer short cycles
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A more consistent feeling of comfort, even during heat waves in Montreal and on the South Shore
An ADD-ON system designed for renovation and replacement
Compatibility with existing ducts
One of the main advantages of the ADD-ON MIDEA EVOX G3 central heat pump is its ability to be integrated into existing systems without major modifications to the ductwork. This reduces:
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The costs of the work
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Installation times
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The risks associated with unnecessary structural modifications
In several projects in Laval-Ouest and Ahuntsic , we were able to retain the majority of the ductwork, while significantly improving the overall performance of the HVAC system.
Intelligent airflow management
The system uses advanced constant airflow management, capable of adapting:
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High-efficiency filters (up to MERV 13)
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To the slightly undersized ducts
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To the customer's comfort preferences (silence vs. higher bandwidth)
This avoids a common problem: replacing the unit without taking into account the actual constraints of the building.
R-454B refrigerant: efficiency and future compliance
The EVOX G3 uses R-454B refrigerant , a new generation fluid with low global warming potential (GWP), compliant with current and future environmental standards.
For homeowners in Montreal and Longueuil , this represents:
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A solution compatible with future regulations
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Better positioning for the building's resale value
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A measurable reduction in environmental footprint compared to older R-410A systems
At AirGreen, we emphasize this point during consultations, because an HVAC system is a long-term investment.
Key technical data for the 2.5 T model
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AHRI Number : 216623523
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Outdoor unit : MO1HE-H30B-2A
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Indoor unit : MAAHE-H36B-BA
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SEER2 : up to 17+ depending on configuration
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HSPF2 : up to 10+
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ENERGY STAR® : Yes
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Built-in Wi-Fi
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Voltage : 220 V
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Outdoor noise level : 62 dB(A)
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Piping : 3/8 – 3/4
These values are not theoretical: they correspond to measured and recognized performances within the framework of North American certifications.
LogisVert subsidy: a concrete financial lever
Currently, the MIDEA EVOX G3 2.5 T central heat pump is eligible for the $3,000 LogisVert provincial grant (recent update).
In practice, for several customers on the North Shore and South Shore , this subsidy has enabled:
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To opt for a more efficient model
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To significantly reduce the return on investment
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Replacing an energy-inefficient furnace without increasing the overall budget
AirGreen takes care of the technical validation and administrative support to maximize obtaining this aid.
AirGreen Installation: What We Do Differently
Actual preliminary analysis
Before any installation of a central heat pump , we analyze:
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The actual heated area
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The network of conduits
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Consumption habits
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The building's weaknesses (insulation, airtightness)
It is this approach that allows the EVOX G3 to deliver its full potential.
Clean, properly adjusted, and documented installation
Each installation includes:
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Precise flow rate adjustment
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The smart control configuration
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Validation of electrical protections
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A documented start-up explained to the client
In a triplex in Rosemont , this rigor made it possible to eliminate noise and thermal imbalance problems that had been present for more than ten years.
Common mistakes we deliberately avoid
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Installing an oversized heat pump "as a precaution"
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Neglecting the actual capacity of the conduits
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Ignore the fine-tuning of the airflow
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Leaving the customer without explanation on use and maintenance
The EVOX G3 performs well, but only when it is intelligently integrated into the existing HVAC system.
Why choose AirGreen for the EVOX G3
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Local expertise in Montreal, Laval, Longueuil, North Shore and South Shore
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Certified and experienced refrigeration technicians
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Transparent pricing , confirmed before work begins
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$5M Liability Insurance
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Structured, available and documented after-sales service
We do not offer this model by default: we recommend it when it is truly suited to the building and the client's expectations.
Upgrade to a central heat pump that's truly suited to your home.
The ADD-ON MIDEA EVOX G3 | 2.5 T R454B central heat pump represents a serious solution for those seeking reliable winter performance, even air conditioning and measurable energy efficiency, without compromising compatibility with their existing installation.
Contact AirGreen now for a complete assessment, a detailed quote, or to confirm your eligibility for the LogisVert grant. Our team will guide you from analysis to installation, anywhere in Greater Montreal.
