“ADD-ON” central heat pump ELIOS R410A | 3T - Cased Coil

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An ADD-ON central heat pump designed for real-world installations, not theoretical ones.

At AirGreen Heat Pumps, Air Conditioning & Heating , we work daily with buildings that have a history: old furnaces that are still functional, poorly optimized dual-energy systems, oversized or overly restrictive ductwork, and electrical panels with limited capacity. The ELIOS R410A 3-tonne "ADD-ON" central heat pump is designed precisely for this real-world situation.

This is not a system designed for an ideal new home, but a cleverly designed solution to integrate with existing buildings , improve overall energy performance and reduce dependence on expensive heating sources, without requiring a complete rebuild of the central system.

In several projects carried out by AirGreen in Montreal, Laval and on the South Shore, this ADD-ON approach has allowed owners to modernize their thermal comfort while retaining central components that are still perfectly usable.

Understanding the ADD-ON principle: a strategic choice, not a compromise

A well-designed ADD-ON system does not mean a temporary or limited solution. On the contrary, the ELIOS ADD-ON control unit is designed to:

• Working in perfect synergy with an electric or dual-energy furnace

• Prioritize the heat pump during moderate temperatures.

• Intelligently switch to top-up when required

• Maximize the overall efficiency of the existing central system

In practice, this often makes it possible to drastically reduce the operating hours of the electric backup , particularly during key periods of the Quebec winter when the ELIOS heat pump maintains excellent capacity.

Stable and reliable heating down to -30°C: a non-negotiable requirement in Quebec

The climate of Greater Montreal imposes very specific constraints. A central heat pump must not only operate in very cold weather, but also maintain a real useful power output without a sudden drop in efficiency.

The ELIOS R410A ADD-ON 3T is designed to meet this requirement:

• Stable operation down to −30 °C

• Maintains nominal capacity down to −20 °C

• HEAT+ technology adapted for extended winters

• Consistent performance even during successive cold spells

In practice, this translates into more consistent comfort, fewer indoor temperature variations and reduced mechanical stress on the system, since the heat pump does not constantly work at its limit.

Inverter technology: precision, longevity and tangible savings

The inverter technology integrated into the ELIOS central heat pump is a key element of its overall performance. Unlike traditional fixed-cycle systems, this technology allows for extremely precise power modulation.

In practical terms, this means:

• Continuous adjustment of capacity according to actual demand

• Fewer sudden compressor starts

• Reduction of electrical peaks

• More stable indoor temperature, without feeling overheated or excessively cooled

In several single-family residences in Longueuil and Boucherville, this fine modulation has made it possible to correct chronic discomfort problems caused by systems that were too aggressive or poorly adapted to the actual load of the building.

Measurable energy performance and optimized operating logic

The 3-tonne (36,000 BTU) model offers a particularly attractive balance between power and efficiency for medium to large-sized homes.

Notable technical features include:

• Cooling capacity : 36,000 BTU

• Heating capacity at -8°C : 27,400 BTU

• Heating capacity at -15°C : 31,600 BTU

• SEER2 : 15.5

• HSPF2 : 8.0

• High COP at low temperature

• R410A refrigerant , stable and proven

• Voltage : 208-230 V

• Piping : 3/8 – 3/4

These values ​​allow for efficient operation in all seasons, with a smooth transition between summer air conditioning and winter heating, without compromising on comfort.

Dehumidification and air quality: an often underestimated benefit

Beyond heating and cooling, humidity management plays a crucial role in indoor comfort. Thanks to its inverter modulation and optimized heat exchanger, the ELIOS central heat pump contributes to:

• Reduce excessive humidity in summer

• Improve the feeling of freshness at the same temperature

• Limiting condensation problems in ducts

• Promoting better indoor air quality

In some projects carried out in Montreal, this dehumidification capacity has made it possible to correct persistent discomforts , particularly in houses with a more airtight envelope or recently renovated.

Compact size and flexible installation in urban environments

The Central-ELIOS range outdoor unit stands out for its compact, side-exhaust format , up to 40% more discreet than many conventional central systems.

This aspect is particularly advantageous for:

• Limited land

• The narrow backyards

• The demanding municipal regulations

• Projects in densely populated areas

At AirGreen, this format has allowed us to achieve compliant installations where other systems would have required significant compromises or costly additional work.

Acoustic comfort: a system that goes unnoticed

Noise is a determining factor, both for the occupants and the neighborhood. The ELIOS ADD-ON central heat pump has a moderate outdoor noise level , significantly lower than many older central systems.

Result :

• A more peaceful interior atmosphere

• Less noise pollution outside

• Increased acceptability in residential neighborhoods

Thermostat integration and smart control

The system can be used with the included ELIOS thermostat or with other compatible thermostats, allowing:

• A precise schedule

• Efficient management of heating, air conditioning and backup modes

• Easy adaptation to the occupants' habits

This flexibility is essential in projects where system control must adapt to specific needs, such as teleworking, variable hours, or multigenerational homes.

Subsidies and financial performance

The ADD-ON ELIOS R410A 3T central heat pump is eligible for the LogisVert provincial subsidy , which can reach $3,288 , depending on the configuration and the criteria in effect.

At AirGreen, we systematically integrate this financial dimension into our approach:

• Validation of eligibility

• Optimizing equipment selection

• Administrative support

• Maximizing return on investment

Long-term guarantee and reliability

Mechanical reliability is a key criterion for an add-on system, as it must operate alongside existing components. The ELIOS central heat pump offers:

• 10 years on the compressor

• 10-year warranty on parts

• Extended warranty options available

This coverage reflects the robustness of the system and allows owners to invest with confidence.

The AirGreen approach: beyond equipment

Installing a high-performance ADD-ON central heat pump is more than just connecting components. At AirGreen , every project includes:

• Complete analysis of the thermal load

• Verification of the conduit network

• Adjusting airflow and statics

• Optimal configuration of heating sequences

• Detailed and verified commissioning

It is this technical rigor that guarantees that the ELIOS R410A ADD-ON 3T delivers its full potential, year after year.

Conclusion

The ELIOS R410A 3-tonne “ADD-ON” central heat pump is a coherent, reliable and efficient solution for homeowners who want to optimize their existing central system , improve their comfort and reduce their energy consumption, without unnecessary compromises.

For a personalized assessment , a detailed quote , or to verify your eligibility for available subsidies in Montreal, Laval, Longueuil, on the North Shore or South Shore , contact AirGreen Heat Pumps, Air Conditioning & Heating directly. Our team will guide you with a rigorous and transparent technical approach, from the initial diagnosis to final commissioning.