“ADD-ON” central heat pump ELIOS R410A | 2.5T - Cased Coil

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A central heat pump designed to intelligently modernize existing systems

At AirGreen Heat Pumps, Air Conditioning & Heating , we meet daily with homeowners who want to improve their comfort, reduce their energy consumption, and take advantage of available subsidies, without undertaking major renovations or replacing still-functional equipment. It is precisely in this context that the ELIOS R410A 2.5-tonne “ADD-ON” central heat pump with cased coil becomes so valuable.

This model was designed to integrate seamlessly with an existing central heating system , whether electric or dual-energy. Rather than starting from scratch, the ADD-ON approach allows you to add a high-performance heat pump to an existing installation, while retaining the furnace and ductwork when they are in good condition. This optimization strategy is particularly well-suited to the residential realities of Montreal, Laval, Longueuil, the North Shore, and the South Shore , where many homes still have robust but energy-inefficient central heating systems.

A design adapted to the Quebec climate, without compromise

Reliable heating down to -30°C

One of the most important criteria when choosing a central heat pump in Quebec is its ability to heat efficiently in cold weather. The ELIOS ADD-ON 2.5T central heat pump is designed to maintain its performance down to -30°C , a crucial threshold for coping with the harsh winters we regularly experience.

In several projects completed by AirGreen, particularly in more exposed areas of Laval-Ouest and on the North Shore, this system has demonstrated a consistent ability to provide primary heating during extended periods of intense cold, significantly reducing the need for supplemental heating elements. For homeowners, this translates into more stable comfort and better control over electricity costs.

Inverter technology: stability, efficiency and longevity

This central heat pump incorporates advanced inverter technology , which continuously adjusts the compressor speed according to the building's actual needs. Unlike traditional fixed-cycle systems, this progressive modulation offers several tangible advantages:

• More precise maintenance of the indoor temperature

• Reduction of sudden temperature fluctuations

• Reduction in frequent starts and stops

• Reduced mechanical wear over the long term

In multi-story residences in Longueuil and eastern Montreal, this technology has made it possible to correct recurring problems of overheating or underheating, often caused by central systems that are too rigid or poorly adapted to the actual loads of the building.

Energy efficiency and measurable performance

High and consistent performance indicators

The ELIOS ADD-ON 2.5T central heat pump stands out for its high efficiency in both cooling and heating. Its SEER2, HSPF2 ratings and low-temperature COP reflect real energy efficiency, which can be seen on electricity bills.

In practice, AirGreen customers observe:

• More stable consumption from one season to the next

• A reduction in peak electricity demand in winter

• Improved predictability of annual costs

This efficiency also contributes to the system's eligibility for provincial subsidy programs , a key element for many residential projects in the greater Montreal area.

ENERGY STAR® certification and cold climate recognition

The fact that this model is ENERGY STAR® certified , including recognition for cold climates, guarantees compliance with the strictest energy standards. At AirGreen, we consistently prioritize this type of certification, as it reflects verified performance adapted to local conditions.

An ADD-ON solution designed for complex projects

Seamless integration into the existing ductwork

The core of the ADD-ON concept lies in its ability to integrate directly into the existing central system. The internal cased coil is designed for clean installation within the plenum, without requiring a complete overhaul of the ductwork.

This approach allows:

• To reduce the duration of the work

• To limit structural interventions

• To preserve the balance of the existing airflow

In several homes in Laval and Boucherville equipped with dual-energy systems, this configuration allowed a smooth transition to a high-performance central heat pump, while retaining the furnace as a backup source.

Precise sizing and controlled airflow

With a nominal capacity of 30,000 BTU (2.5 tonnes) and a high airflow, this model is perfectly suited to medium to large homes, very common on the South Shore and in some residential areas of Montreal.

At AirGreen, each installation is based on a rigorous analysis:

• Surface area and actual volume to be heated

• Building insulation and waterproofing

• Orientation and exposure to prevailing winds

• Occupation and habits of the occupants

This methodology avoids the common errors of oversizing, which impair comfort and long-term efficiency.

Acoustic comfort and quality of life

Discreet operation, both indoors and outdoors

Noise level is an often overlooked factor when choosing a central system. The ELIOS ADD-ON outdoor unit has a sound pressure level of approximately 62 dB(A) , making it significantly quieter than many older central systems still in use.

In dense neighborhoods of Montreal and Longueuil, this discretion not only improves the comfort of the occupants, but also coexistence with the neighborhood, a real issue in closely spaced residential areas.

Reliability, maintenance and peace of mind

A robust design for heavy-duty use

The ELIOS ADD-ON central heat pump is designed for reliable operation over extended periods, even in demanding climates. Its compact design simplifies installation and maintenance while ensuring efficient airflow.

It also accepts, when required, the integration of internal electric resistances , offering a safe supplementary heating solution during extreme conditions or increased occasional needs.

Warranty and options tailored to the installation context

The system is covered by a 10-year warranty on the compressor and parts , with the option to add further protection as needed. At AirGreen, we always clearly explain the warranty terms to avoid any ambiguity and allow for informed decision-making.

Concrete examples of installations carried out by AirGreen

• Single-family home in Laval : addition of an ELIOS ADD-ON central heat pump to an existing system, marked reduction in heating costs from the first winter.

• Duplex in Longueuil : integration into a dual-energy configuration, improvement of thermal comfort on the upper floors.

• Residence on the South Shore : quick installation without major modification of the ducts, LogisVert subsidy applied in full.

These projects illustrate the importance of choosing the right equipment, but above all, of a well-thought-out installation adapted to each building.

Why entrust your project to AirGreen

Choosing the right central heat pump is a crucial step, but the quality of the installation remains the determining factor . At AirGreen, we stand out because of:

• Certified and highly experienced refrigeration technicians

• An approach focused on the actual analysis of the building

• Transparent pricing , communicated before work begins

• Recognized expertise in HVAC installation in Montreal, Laval, Longueuil, on the North Shore and the South Shore

Our goal is to deliver a consistent, sustainable system perfectly suited to your residential reality.

Conclusion

The ELIOS R410A 2.5T “ADD-ON” central heat pump with cased coil is a strategic solution for upgrading an existing central system without compromising performance, comfort, or energy efficiency. Designed for Quebec's climate and compatible with electric and dual-energy configurations, it meets the real needs of local homeowners.

For a personalized assessment, a detailed quote, or to confirm the compatibility of this system with your existing installation, contact AirGreen today . Our team will be happy to assist you at every stage of your HVAC project.