Elios ADD-ON Central Heat Pump | Cased Coil | 30,000 BTU | -25°C

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A central ADD-ON solution designed for Quebec realities, without unnecessary reconstruction

At AirGreen , we face a very specific reality every day in Montreal , Laval , Longueuil , and on the North and South Shores : buildings with perfectly functional ductwork, but heating systems that have become energy-inefficient, expensive to operate, or simply technologically outdated. The Elios 30,000 BTU -25°C ADD-ON Central Heat Pump with coil and casing was designed precisely for this situation.

This model allows you to add a modern central heat pump to an existing system without demolition, without a complete overhaul, and most importantly, without compromising winter reliability. In a province where winters are long, unpredictable, and sometimes extreme, this pragmatic approach makes all the difference.

The goal is not to replace for the sake of replacement, but to intelligently optimize what is already in place, while improving comfort, thermal stability and long-term operating costs.

The ADD-ON principle: an approach we apply in practice, not just on paper

The ADD-ON concept isn't theoretical at AirGreen. We've been applying it practically for years, particularly in single-family homes, duplexes, triplexes, and small commercial buildings. In Laval , for example, it's common to find buildings equipped with an electric or gas furnace that's still in good condition, but without central air conditioning or with inefficient air conditioning.

The ADD-ON Elios central heat pump then comes into play:

• Integrate directly into the existing conduit network

• Prioritize operation when external conditions are favorable.

• Drastically reduce the use of the main system for the majority of the year

• Maintain a reliable backup heating source during extreme cold.

This type of hybrid configuration is particularly popular on the South Shore , where many customers are looking for a transitional solution towards full electrification, without taking unnecessary risks.

A 30,000 BTU format perfectly suited to standard room sizes

The 30,000 BTU (2.5-ton) version offers a very suitable balance for many residential and semi-commercial properties. It is frequently installed by our teams in:

• Well-insulated, medium-sized houses

• Entire floors of duplexes or triplexes

• Local shops with open areas

In air conditioning, this capacity ensures uniform cooling, without dead zones or oversizing. During heat waves in Montreal , we observe remarkable thermal stability, even in buildings with large windows.

For heating, the heat pump is designed to operate down to -25°C , which corresponds to the vast majority of conditions encountered each winter. In practical terms, this means that the heat pump covers a very significant portion of the annual heating needs, while the existing system only kicks in when absolutely necessary.

Winter performance designed for real-world conditions, not idealized ones.

One of the points we systematically evaluate at AirGreen is the actual performance of a system in winter conditions. The Elios 30,000 BTU ADD-ON Central Heat Pump stands out with its stable performance curve:

• Rated power output is maintained even at sub-zero temperatures.

• Capacity still significant at -8 °C and -15 °C

• Consistent performance in the mid-season, when the heat pump is most advantageous

In several projects carried out in Longueuil and on the North Shore , we have observed a significant reduction in the cycles of the auxiliary heating, which directly translates into a decrease in the electrical consumption or fuel used by the main system.

Energy efficiency and intelligent seasonal behavior

Beyond the theoretical figures, this Elios model stands out for its seasonal behavior . Thanks to its Inverter modulation, it continuously adjusts its power rather than operating in an on/off fashion.

This brings several tangible benefits:

• A more constant indoor temperature

• Fewer noticeable variations in the pieces

• Better humidity management in summer

• A reduction in long-term mechanical wear

In Boucherville , for example, we installed this model in an open-concept house where the old systems caused significant temperature fluctuations. After installation, comfort became much more consistent, both in terms of heating and cooling.

Inverter technology and advanced communication between components

The Inverter technology integrated into the ADD-ON Elios central heat pump plays a central role in the quality of comfort achieved. Unlike traditional 24V controlled systems, which operate in abrupt cycles, this system communicates continuously between the indoor and outdoor units.

This two-way communication allows:

• A fine-tuned adaptation to the actual load of the building

• Partial-capacity operation is much more frequent

• A reduction in perceived noise both indoors and outdoors

• Increased efficiency during long periods of operation

This is a particularly appreciated feature in dense Montreal neighborhoods, where acoustic comfort is an important criterion.

The coil WITH housing: a choice that facilitates installation and durability

The cased coil is not a mere technical detail. In practice, it greatly facilitates system integration and improves the overall durability of the installation.

At AirGreen, we prefer this format when:

• Mechanical space is limited

• The existing system requires clean and structured integration.

• Condensation management must be flawless.

In several projects in Laval , this choice has allowed us to reduce on-site adjustments, improve the quality of the finish and ensure better accessibility for future maintenance.

R-454B refrigerant and integrated system safety

The ADD-ON Elios central heat pump uses R-454B , a next-generation refrigerant compliant with A2L standards. This choice reflects a gradual transition towards more responsible solutions, without compromising performance.

The system also includes leak detection , capable of:

• Continuously monitor the refrigeration circuit

• Stop the compressor if there is a malfunction.

• Maintain air circulation to avoid discomfort

• Report that intervention is required

In multi-unit residential buildings on the South Shore , this additional layer of security is a reassuring element for both owners and managers.

Noise levels and thoughtful exterior integration

With an external noise level of approximately 60 dB(A) , this model is ideally suited for residential environments. The horizontal discharge design also allows for more discreet installation, often preferred in urban or semi-urban areas.

We pay particular attention to the location of outdoor units, especially in Montreal , in order to respect neighbourhood constraints, municipal regulations and long-term comfort.

Guarantee, reliability and long-term vision

The warranty configuration offered on this model reflects its durability-oriented design:

• Compressor: 10 years

• Parts: 10 years

• Additional warranty options are available depending on the context.

At AirGreen, we always clearly explain the options for extended protection, taking into account the type of building, its use and the client's expectations.

Why AirGreen recommends this ADD-ON central heat pump

We recommend the Elios 30,000 BTU -25°C ADD-ON Central Heat Pump with coil AND casing when the project requires:

• A central solution without complete reconstruction

• A gradual and secure energy transition

• Reliable and predictable winter behavior

• A clean integration into an existing system

This is not a generic choice, but a solution that we validate project by project, depending on the actual constraints of the building.

What an AirGreen installation actually changes

An installation carried out by AirGreen in Montreal , Laval , Longueuil , on the North Shore or the South Shore , is not just the installation of equipment. It's a complete process that includes:

• A detailed analysis of the conduit network

• A precise calculation of thermal loads

• A well-thought-out mechanical integration

• Fine-tuning from the moment of commissioning

• Clear guidance for use and maintenance

Over time, we have learned that the actual performance of a central heat pump depends as much on the quality of the installation as on the equipment itself.

Next Step

If you are considering adding an ADD-ON central heat pump to your existing system or upgrading your heating and air conditioning in Montreal , Laval , Longueuil , on the North Shore or the South Shore , AirGreen is there to assist you.

Contact us now for a professional analysis, a clear quote and a solution truly tailored to your building.