“ADD-ON” central heat pump ELIOS R410A | 2T - Cased Coil

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A central heat pump designed to modernize existing systems without compromise

At AirGreen, we meet weekly with homeowners in Montreal , Laval , Longueuil , and on the North and South Shores who are facing a very real problem: an aging central heating system, often still functional in terms of air distribution, but energy-inefficient, noisy, or poorly suited to today's Quebec winters. The ADD-ON ELIOS R410A – 2-tonne central heat pump with cased coil fits perfectly into this smart modernization strategy.

This system is not designed to force the complete replacement of existing infrastructure. On the contrary, this central heat pump was developed to integrate seamlessly with existing installations , whether it's an electrical system, a dual-energy configuration, or a phased replacement of older central equipment. This approach is particularly relevant in the Quebec context, where many buildings still have ductwork in good condition, but underutilized by outdated equipment.

Designed for the actual Quebec climate, not for theoretical scenarios

One of the aspects that clearly distinguishes the ELIOS R410A central heat pump is its ability to provide stable and constant heating down to -30°C . This threshold is not insignificant: it corresponds to conditions we actually encounter, particularly during prolonged cold spells on the North Shore or in certain more exposed areas of the Montérégie region.

In our AirGreen installations, we have observed that this performance translates directly into a significant reduction in reliance on auxiliary heating elements , which are often responsible for substantial increases in electricity bills during the winter. For many clients in Laval and Longueuil, this point alone was enough to justify choosing this central heat pump over a more standard model.

In terms of real and useful figures, this 2-tonne (24,000 BTU) version maintains:

• approximately 21,000 BTU of power at -8°C ;

• approximately 20,000 BTU at -15°C , which are temperatures very representative of the average winter in Quebec.

These values ​​ensure continuous comfort without sudden variations, even in houses with imperfect thermal envelopes, which remains common in Montreal's housing stock.

Inverter technology: thermal stability and controlled efficiency

The Inverter technology integrated into this ADD-ON central heat pump plays a crucial role in the daily experience. Unlike traditional systems that constantly switch on and off, the Inverter compressor adjusts its power gradually and precisely, sometimes in very small increments.

In practice, this translates to:

• a much more stable indoor temperature , without the sensation of cold or hot drafts;

• a significant reduction in operating noise , particularly noticeable in open living spaces;

• reduced mechanical wear , which directly contributes to the system's durability;

• a more linear electricity consumption , avoiding costly spikes during frequent restarts.

In several single-family homes where AirGreen replaced older, fixed-operating central heat pumps, occupants noted an immediate improvement in comfort, even without modification to existing ductwork.

Energy efficiency and subsidies: a concrete impact on the budget

The ADD-ON ELIOS R410A 2T central heat pump also stands out for its solid energy efficiency indicators, which are consistent with current requirements:

• SEER2 of 16.5 in air conditioning;

• HSPF2 of 9.5 in seasonal heating;

• High COP even at low temperatures, which is crucial for Quebec's climate.

These performance levels make the system eligible for the $2,520 LogisVert provincial grant , representing a significant financial boost for many projects. At AirGreen, we systematically assist our clients in verifying eligibility, as we know that technical criteria, the final configuration, and the quality of the HVAC installation play a central role in the application's approval.

In several projects on the South Shore, the savings generated by the subsidy combined with the decrease in consumption made it possible to amortize the investment more quickly than initially planned.

A true ADD-ON approach: flexibility and compatibility

The ADD-ON concept of this ELIOS central heat pump is not just a name. It reflects genuine compatibility with existing installations , both mechanically and electrically. The system is designed to operate efficiently with:

• existing conduit networks;

• standard electrical configurations in 220 V ;

• dual-energy conversion projects;

• partial replacements where it is desired to retain certain functional components.

The cased coil contributes to this flexibility by facilitating integration into the existing system, while improving airtightness and airflow management. During an AirGreen project in Montreal East, this design made it possible to limit internal heat loss and optimize air distribution without major modifications to the ductwork.

Acoustic comfort and residential integration

Thermal comfort cannot be separated from acoustic comfort. With an outdoor noise level of approximately 63.5 dB(A) , this central heat pump falls within a very acceptable range for dense residential environments, particularly in Montreal and Laval.

Inside, the system operates remarkably quietly. This feature is often mentioned by our clients a few weeks after installation, when the system seamlessly integrates into their daily lives without drawing attention. In multi-story homes or open-plan houses, this silence directly contributes to the quality of life.

Dimensions, electrical data and actual installation constraints

For a central system weighing 2 tonnes , the dimensions remain compact and suitable for the majority of residential mechanical rooms:

• Indoor unit : 17.52 x 20.98 x 17.99 in

• Outdoor unit : 37.24 x 16.14 x 31.89 in

Standard electrical specifications— 20 A MCA , 35 A MOP , 220 V voltage—facilitate integration without requiring, in most cases, a major electrical panel upgrade. However, our experience at AirGreen has taught us that an accurate diagnosis of the existing installation remains essential to ensure optimal long-term performance.

Reliability, maintenance and peace of mind

The 10-year warranty on the compressor and parts reflects the system's robustness and the manufacturer's confidence in its design. An additional warranty can be added as needed, particularly in rental properties or multi-unit buildings.

In terms of HVAC maintenance , this central heat pump is not overly complex. Access is well-designed, components are standardized, and preventative maintenance is easily integrated into an annual program. This simplicity helps keep operating costs under control throughout the system's lifespan.

The AirGreen approach: beyond the product

At AirGreen, we know that good equipment that is poorly integrated quickly loses its value. That's why we approach every central heat pump project with a complete analysis: actual sizing, condition of the ductwork, consumption patterns, electrical constraints, and long-term objectives.

We have installed this type of system in a wide variety of settings in Montreal , Laval , Longueuil , on the North Shore and the South Shore . This field experience allows us to avoid common mistakes: undersizing, unrealistic promises, or poor integration into existing systems.

The ADD-ON ELIOS R410A 2T central heat pump is an excellent choice when recommended for the right reasons. It is precisely this compatibility between the product, the building, and its intended use that makes the difference in the long run.

Conclusion

Are you considering replacing or upgrading your central HVAC system ? The ADD-ON ELIOS R410A central heat pump could be the perfect solution for your needs. Contact AirGreen for a complete assessment, rebate eligibility analysis, and a detailed quote based on concrete data and proven expertise.