“ADD-ON” central heat pump ELIOS R410A | 1.5T - Cased Coil

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A central heat pump designed for Quebec homes, not for brochures.

At AirGreen Heat Pumps, Air Conditioning & Heating , we install central HVAC systems in real-world conditions: century-old homes in Montreal , bungalows in Laval , semi-detached houses in Longueuil , and family residences on the North and South Shores . The ELIOS R410A | 1.5T – Cased Coil “ADD-ON” central heat pump was specifically designed for these realities, not for idealized scenarios.

This model is primarily aimed at homeowners who want to intelligently modernize their existing system without starting from scratch. This refers to homes already equipped with ductwork, often with older electric or dual-energy heating systems, where the objective is clear: to improve comfort, reduce energy bills, and maintain efficient central air distribution.

The ADD-ON format is not a marketing detail. In practice, it means high compatibility , better controlled operations, and clean integration, both mechanically and electrically.

Reliable heating down to -30°C: a requirement, not a luxury

In Quebec's climate, heating performance is the number one criterion. Too many central systems boast good figures on paper, but struggle as soon as the temperature drops below -15°C. This is precisely where the ELIOS Central-Elios system stands out.

Heating capacity is maintained down to -30°C , with stable and predictable performance during cold spells. In practice, this translates to:

• less reliance on auxiliary heating;

• a more constant indoor temperature;

• a reduction of mechanical stress on the system.

For the 1.5 tonne (18,000 BTU) version, the values ​​observed under real-world conditions remain consistent:

• 14,700 BTU at -8°C

• 15,000 BTU at -15°C

These figures are particularly suited to well-insulated houses, recent energy renovations and buildings where precise sizing is essential to avoid overheating or underperformance.

Efficient and even central air conditioning

In cooling mode, the 18,000 BTU capacity is ideal for a wide variety of residential setups. Unlike some older central systems, Inverter modulation prevents short cycling and abrupt temperature changes.

In the installations carried out by AirGreen in Montreal and Longueuil , this type of regulation offers two concrete advantages:

• a constant feeling of freshness, even during heat waves;

• improved management of indoor humidity, contributing to overall comfort.

The central distribution also ensures a more uniform temperature between floors, a common issue in open-plan or multi-level homes.

HEAT+ and Inverter technology: what it really changes in everyday life

HEAT+ technology, combined with an Inverter compressor, does more than just improve energy efficiency. It fundamentally changes the way the system works.

Instead of constantly switching on and off, the heat pump adjusts its power in very fine increments. The result:

• less noise;

• less mechanical wear;

• a more stable electricity consumption.

The COP of 12.23 at -8 °C clearly illustrates this efficiency in winter conditions, a particularly important criterion for owners concerned about controlling their energy costs in the long term.

The "ADD-ON" concept: a realistic approach to core replacement

In a majority of projects carried out by AirGreen on the South Shore and the North Shore , the challenge is not to install a new system, but to intelligently replace existing equipment.

The ADD-ON format allows:

• to preserve the conduits;

• to limit structural modifications;

• to reduce the duration and complexity of the work.

Compact and easy-to-integrate indoor unit

The Cased Coil indoor coil (DEA18HOS20230E7) is designed to integrate neatly into an existing mechanical room. Its compact dimensions ( 17.52 x 20.98 x 17.99 in ) facilitate installation in confined spaces, typical of older Montreal homes.

This compactness is not just an installation advantage: it also contributes to better air management and simpler maintenance.

Discreet and silent outdoor unit

The CUB24HAC20BWT7A outdoor unit stands out for its compact size ( 35.04 x 13.46 x 26.50 in ) and its noise level of 57 dB(A) . In dense residential areas, this feature is far from insignificant.

During our installations in Laval , several clients highlighted the significant improvement in acoustic comfort compared to their old central system, both inside and outside the house.

Acoustic comfort is often underestimated

Noise is one of the most frequent irritants with traditional central systems. A high-performance but noisy device ultimately negatively impacts quality of life.

Thanks to its side-exhaust design and inverter modulation, the ELIOS ADD-ON central heat pump offers significantly quieter operation. Compared to systems that often exceed 70 dB(A), the difference is immediately noticeable.

This silence is accompanied by a well-balanced airflow , avoiding unpleasant drafts and sudden temperature changes.

Energy efficiency and subsidies: a financially sound project

ENERGY STAR® and ENERGY STAR® Cold Climate certifications make this model eligible for current financial assistance programs.

At the time of the last update:

• LogisVert provincial grant: $1,764

In several projects led by AirGreen, this financial assistance played a decisive role in the investment decision, significantly reducing the net cost of the system.

Essential technical data to know

For owners who wish to understand the technical aspects before committing, here are some key parameters:

• Refrigerant: R-410A

• Power supply: 220 V

• MCA: 20 A

• MOP: 35 A

• Piping: 3/8 – 3/4

• Warranty: 10 years compressor / 10 years parts / 0 years labor (extension possible)

These elements must always be validated as part of a comprehensive building assessment, including insulation, duct configuration, and actual heating and cooling requirements.

The AirGreen experience: much more than an installation

At AirGreen, we find that long-term problems rarely originate from the equipment itself, but rather:

• due to incorrect sizing;

• of inadequate integration with existing systems;

• of neglected air balancing.

That's why every ADD-ON ELIOS central heat pump installation is preceded by a thorough analysis and followed by rigorous commissioning. This approach allows us to ensure stable, long-lasting performance tailored to the specific needs of each building, whether in Montreal , Laval , Longueuil , on the North Shore or the South Shore .

Conclusion

Are you considering installing or replacing a central heat pump and want a solution truly tailored to your home and our climate? Contact AirGreen Heat Pumps, Air Conditioning & Heating for a complete technical assessment, a clear price quote, and practical advice based on real, proven installations.