Elios ADD-ON Central Heat Pump | A Coils | 36,000 BTU | -30°C

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An ADD-ON central heat pump designed for the realities of Quebec buildings

The ADD-ON Elios 36,000 BTU Central Heat Pump addresses a very common type of project in Quebec: upgrading an existing central system without starting from scratch. In many homes and multi-unit buildings in Montreal , Laval , Longueuil , the North Shore and the South Shore , owners already have a functional forced-air duct system, often combined with an electric furnace or a hybrid system.

The ADD-ON approach allows for the integration of a modern, high-performance central heat pump, suitable for harsh winters, while retaining part of the existing infrastructure. This approach addresses three real priorities that we encounter every day at AirGreen: minimizing disruptive work, optimizing the overall project budget, and ensuring measurable energy savings from the first year.

The Elios model with an "A" coil , in its 36,000 BTU (3-tonne) configuration, was specifically developed for this type of application. It is a central evaporator designed for electric or hybrid ADD-ON systems, capable of providing heating down to -30°C , while also offering stable and well-distributed central air conditioning during the summer.

ADD-ON: often a smarter solution than a complete replacement

On site, we observe that several buildings present specific technical constraints:

• Conduits that are correctly sized but difficult to modify.

• cramped mechanical rooms

• electrical panels already under load

• eligibility requirements for grant programs.

In these situations, the Elios ADD-ON Central Heat Pump often becomes the most rational solution. It allows for the modernization of heating and cooling production without altering the building's structure. The existing system can be retained as a backup, while the heat pump becomes the primary source for both heating and cooling.

At AirGreen, we've installed this system in single-family homes in Boucherville , duplexes in Montreal North , triplexes in Longueuil , and apartment buildings in Laval . In many cases, the client was looking to reduce their electricity consumption without undertaking major renovations. The Elios ADD-ON perfectly met this objective.

Actual thermal performance: what the 36,000 BTU unit actually delivers

Reliable central heating down to -30°C

The 36,000 BTU rated capacity effectively heats medium to large residential areas, including two-story homes, spacious bungalows, and well-insulated multi-unit dwellings. However, what truly sets this central heat pump apart is not just its maximum capacity, but its ability to maintain consistent performance even when outdoor temperatures drop significantly.

In the typical winter conditions of Greater Montreal, with prolonged periods below -15°C, the Elios heat pump continues to provide significant heat output. This considerably reduces the need for supplemental electric heating, which is often responsible for peak consumption on Hydro-Québec bills.

Specifically, our clients notice:

• a more constant indoor temperature

• fewer abrupt variations between cycles,

• increased comfort in rooms located away from the plenum,

• a gradual decrease in heating costs.

Energy efficiency and operational stability

The efficiency indicators of the ADD-ON Elios 36,000 BTU Central Heat Pump position it as a coherent solution for homeowners concerned about performance:

• High seasonal efficiency in air conditioning

• stable heating performance

• compatibility with the criteria of the grant programs.

In several projects completed by AirGreen on the South Shore , we were able to compare energy consumption before and after installation. Even in homes previously heated exclusively by electricity, the annual reduction was significant, especially during the months of January and February.

Uniform and quiet central air conditioning

In cooling mode, the 36,000 BTU capacity ensures even distribution of cool air throughout the building. Unlike wall-mounted units, which are often limited to certain areas, central air conditioning provides balanced comfort, which is particularly appreciated in open-plan or multi-story homes.

The noise level of the outdoor unit remains contained for a system of this category, which is an important factor in the dense residential areas of Montreal and Longueuil , where noise discretion is often an implicit requirement.

Technical choices that improve the overall performance of the system

A-shaped coil: optimized heat exchange and integration

The A-shaped coil plays a central role in the system's efficiency. Its design allows for an increased heat exchange surface area, promoting more efficient heat transfer between the air and the refrigerant. In central installations, this translates into better modulation and a faster response to changes in thermal load.

From a practical standpoint, this type of coil also facilitates integration into existing plenums, reducing structural adjustments and simplifying HVAC installation.

R-454B refrigerant: compliance and long-term performance

The choice of R-454B is driven by a commitment to complying with current and future environmental standards. This refrigerant offers an excellent balance between thermal efficiency and reduced environmental impact. For many AirGreen clients, particularly in recent projects in Laval and on the North Shore , this aspect is a key factor in their system selection.

Inverter technology and intelligent modulation

Thanks to inverter technology, the compressor adjusts its speed according to the building's actual demand. Unlike traditional on/off systems, this continuous modulation allows for:

• more stable electricity consumption

• better humidity control,

• a reduction in mechanical wear,

• extended lifespan of components.

In multi-unit residential buildings where needs vary constantly, this technology significantly improves occupant comfort while maintaining consistent energy efficiency.

HVAC Installation: The AirGreen Method, Step by Step

A thorough diagnosis before any installation

At AirGreen, every HVAC installation begins with a detailed analysis:

• actual area to be served,

• building insulation,

• condition and sizing of the ducts,

• existing electrical configuration

• customer consumption habits.

This preparatory work is essential to fully utilize a 3-tonne ADD-ON central heat pump. An improperly sized system, even if it performs well on paper, will never deliver the expected results.

Case study: residential project on the North Shore

In a single-family home on the North Shore , the owner wanted to keep their recently installed electric furnace while reducing their energy bill. We installed an ADD-ON Elios 36,000 BTU central heat pump , integrated into the existing system.

Results observed after a full season:

• Heating is provided primarily by the heat pump down to approximately -25°C.

• minimal use of supplementary electricity,

• improved comfort in the upstairs bedrooms,

• a significant decrease in winter consumption.

This type of scenario perfectly illustrates the value of a well-designed and well-installed ADD-ON solution.

Commissioning and final optimization

The installation doesn't end with connecting the components. Our teams systematically perform the following steps:

• precise balancing of airflow,

• verification of pressures and operating parameters,

• adjusting the settings according to the building's characteristics,

• a clear and complete explanation of the system to the client.

It is this rigor that allows the central heat pump to deliver its full potential over the long term.

Subsidies, reliability, and peace of mind

The Elios ADD-ON Central Heat Pump is eligible for provincial grant programs, including LogisVert , with financial assistance of up to $3,504 , depending on applicable criteria. This contribution significantly reduces the net cost of the project and accelerates the return on investment.

In terms of reliability, the system benefits from solid warranties on major components. AirGreen's experience shows that Elios equipment installed in recent years demonstrates remarkable stability, both in residential and multi-unit applications.

Why entrust your project to AirGreen

Choosing a high-performance heat pump is essential, but the quality of the installation remains the determining factor. At AirGreen, we offer:

• in-depth expertise in central HVAC installation

• a firsthand knowledge of the buildings in Greater Montreal

• a structured, transparent and precise approach,

• an active presence in Montreal , Laval , Longueuil , on the North Shore and the South Shore .

We rigorously evaluate each project in order to recommend the truly suitable solution, whether it is an ADD-ON or another configuration.

Take the next step with AirGreen

If you are considering installing an Elios ADD-ON Central Heat Pump | A-Coils | 36,000 BTU | -30°C , our team is ready to analyze your situation, verify the compatibility of your existing system, and offer you a clear, sustainable, and optimized solution. Contact AirGreen now for a complete assessment and a detailed quote.