Elios ADD-ON Central Heat Pump | Cased Coil | 30000 BTU | -25°C

• BROCHURE : FRANÇAIS
• BROCHURE : ENGLISH

A central ADD-ON solution designed for existing buildings and the climatic realities of Quebec

At AirGreen, we work daily on buildings already equipped with a central system — electric furnace, existing plenum, ducts in place — where owners wish to improve their thermal comfort , reduce their energy consumption and modernize their installation without starting from scratch .
The ADD-ON Elios Central Heat Pump | 30,000 BTU | -25°C , with coil WITH casing, was developed precisely to meet this type of need.

In areas like Montreal , Laval , Longueuil , the North Shore , and the South Shore , the housing stock consists largely of houses and small apartment buildings constructed before central heat pumps were commonplace. The Elios ADD-ON concept allows for the enhancement of existing infrastructure while benefiting from modern, reliable technology adapted to Quebec winters.

The Elios ADD-ON concept explained in concrete terms

An approach that respects what already exists

The ADD-ON principle is based on integrating a heat pump coil directly into the air circuit of an existing central system. Unlike a complete replacement, this approach:

• avoids the demolition or reconstruction of the conduits

• limits major electrical modifications

• reduces response times

• minimizes the impact on the daily lives of the occupants

At AirGreen, we favour this type of solution when it is technically relevant, as it often offers the best balance between performance, cost and sustainability .

Why choose a coil WITH a housing?

The coil WITH housing is particularly appreciated in installations where the mechanical environment is visible or exposed. It provides:

• improved physical protection of the coil

• a cleaner and more structured integration

• ease of long-term maintenance

• improved condensate management

In several light commercial projects carried out by AirGreen on the South Shore , this choice was essential to ensure a robust, durable installation that met the expectations of building managers.

A 30,000 BTU capacity designed for real needs

Consistent sizing for residential and multi-unit light housing

With a rated capacity of 30,000 BTU (2.5 tonnes) , this ADD-ON central heat pump is perfectly suited for:

• well-insulated single-family homes

• duplexes and triplexes

• small offices or shops

• buildings where supplementary electric heating remains present

In practice, we find that this format meets thermal needs very well without causing excessively short cycles, a common problem with oversized systems.

Stable performance in winter conditions

This model is designed to operate efficiently down to -25°C , an essential factor in regions like Laval or the North Shore , where winter temperatures can remain low for long periods.

• Available power at -8°C: 19,000 BTU

• Available power at -15°C: 19,000 BTU

This allows the heat pump to provide a large part of the heating, even in the middle of winter, while leaving the existing system to play a supplementary role when necessary.

Energy efficiency: what it changes on a daily basis

Indicators that translate into concrete savings

The energy efficiency of this ADD-ON Elios central heat pump is directly reflected in real-world use:

• SEER2: 15.83 , for efficient and consistent air conditioning

• HSPF2: 8.215 , indicating good seasonal heating efficiency

• COP at -8°C: 1.93 , indicating stable performance even in cold weather

For our customers, this means:

• a more predictable electricity bill

• a reduction in dependence on supplementary heating

• more consistent comfort from one room to another

Inverter technology and intelligent communication

A subtle modulation rather than a harsh operation

The inverter technology integrated into the ADD-ON Elios central heat pump allows for continuous power adjustment according to the building's actual needs. Unlike older on/off systems:

• the indoor temperature remains more stable

• Humidity variations are better controlled.

• the noise level is more constant

• component wear is reduced

Two-way communication between units

The system relies on direct communication between the indoor and outdoor units , allowing for real-time adaptation. This approach improves:

• the precision of heating and air conditioning

• the compressor's lifespan

• the overall efficiency of the system

In a recent project in Longueuil , a client told us that the temperature differences between the basement and the main floor had practically disappeared after the installation of this model.

Essential technical details for a successful installation

Modern refrigeration and integrated safety features

The ADD-ON Elios central heat pump uses R-454B , a next-generation refrigerant that meets current standards. The system is also equipped with integrated leak detection , capable of:

• stop the compressor in case of a malfunction

• maintain air circulation

• report a service need

These elements are crucial to ensure a safe installation that complies with current requirements.

Dimensions and integration constraints

• Indoor unit: 16.13 × 22.68 × 20.14 in

• Outdoor unit: 37.24 × 16.14 × 31.89 in

• Outdoor noise level: 60 dB(A)

These features facilitate installation in confined spaces, particularly in dense urban environments like Montreal .

AirGreen feedback from the field

Single-family home in Laval

The client had a functional but energy-inefficient electric furnace. Adding the ADD-ON Elios central heat pump allowed for:

• a significant decrease in winter electricity consumption

• an improvement in comfort during the mid-season

• a more rational use of auxiliary heating

Duplex on the South Shore

In this case, the constraints were noise and the shared outdoor space. The compact size and moderate noise level were key factors in the system selection.

Common mistakes observed and how to avoid them

Based on experience with hundreds of HVAC installations, we've found that problems often arise when:

• the system is poorly designed

• the condition of the existing conduits is poorly assessed

• air balancing is neglected

• The ADD-ON installation is performed without plenum analysis.

At AirGreen, every project begins with a complete technical evaluation , because a high-performing product cannot deliver its full potential without careful integration.

Why AirGreen Makes a Difference

Choosing AirGreen means benefiting from:

• concrete expertise in HVAC installation

• certified and experienced refrigeration technicians

• with in-depth knowledge of the buildings in Montreal , Laval , Longueuil , North Shore and South Shore

• a transparent approach, with no surprises at the end of the work

We consider the ADD-ON Elios Central Heat Pump | 30,000 BTU | -25°C to be a serious solution, but we know that it is the quality of the installation that makes it a truly profitable investment.

Conclusion

If you wish to modernize your central system, improve your comfort and reduce your energy costs while keeping your existing installation, the ADD-ON Elios central heat pump represents a particularly relevant option.

At AirGreen, we take the time to understand your building, your habits and your objectives before recommending a specific solution.

Contact AirGreen today for a complete analysis, a detailed quote or to discuss your HVAC installation project in Montreal, Laval, Longueuil, on the North Shore or the South Shore.