CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump | 2.5T - Cased Coil

• BROCHURE

A central heat pump designed for the real Quebec climate, not a theoretical one.

At AirGreen , we have been installing HVAC systems for over 15 years in a wide variety of settings: older single-family homes, new constructions, duplexes, triplexes, apartment buildings, and light commercial buildings in Montreal , Laval , Longueuil , and on the North and South Shores. The CANAIR 4CDH R-454B | 2.5T "ADD-ON" Central Heat Pump is perfectly suited to this real-world situation, where the advertised performance must remain consistent during long, wet, and harsh winters.

This model was not designed for temperate climates or ideal laboratory conditions. It was developed to operate effectively in real-world situations: prolonged cold spells, frequent freeze-thaw cycles, rapid variations in heat load, and existing buildings with less-than-perfect insulation or air distribution. It is precisely in these contexts that this ADD-ON system demonstrates its value.

A truly relevant ADD-ON format for existing buildings

The ADD-ON concept is often misunderstood. In the case of the CANAIR 4CDH 2.5T , it is not simply a matter of adding a heat pump to an existing installation, but of creating intelligent integration with a central system already in place or as a gradual replacement for a more energy-intensive heating source.

In several projects carried out by AirGreen in Montreal and Laval , this approach has enabled:

• to maintain a central air distribution system that is already well-sized

• to reduce invasive work in the building

• to optimize the overall costs of the project

• to speed up installation times

For owners of plexes or renovated houses, this flexibility often represents the difference between a feasible project and one abandoned for budgetary or technical reasons.

Measurable performance that makes a difference over 12 months

The 2.5-tonne (30,000 BTU) version is particularly well-balanced for a large proportion of homes in the greater Montreal area. It offers sufficient power without being oversized, one of the most frequent problems we correct when replacing central heating systems.

From a technical standpoint, this model is distinguished by:

• High seasonal efficiency in air conditioning (SEER2) , essential during increasingly long and humid summers

• a heating efficiency (HSPF2) which allows for controlled electricity consumption throughout the cold season

• a heating capacity down to -30°C , perfectly suited to Quebec winters

• stable heating power at -8°C and -15°C , where many systems quickly lose efficiency

In practice, this translates into constant thermal comfort, without overheating, without excessive cooling and without sudden variations between floors or areas far from the main ducts.

R-454B: a modern, consistent and sustainable refrigerant

The choice of R-454B is not simply an environmental argument. It is a technical choice that has a direct impact on the system's durability. This refrigerant, with its low global warming potential, reduces the system's carbon footprint while ensuring excellent thermodynamic stability.

In our recent installations on the South Shore and in Longueuil , this type of refrigerant also facilitates compliance with current and future standards, reducing the risk of premature obsolescence. For a building owner, this means a system that will remain relevant and supported over the long term, both from a regulatory and technical standpoint.

A central design conceived for space and discretion

The side-discharge outdoor unit is a major advantage in urban and suburban environments. This format allows for:

• Easier integration into narrow backyards

• improved compliance with minimum clearance requirements

• a reduction in visual impact

• more efficient airflow management

In Montreal , where space is often limited, this technical detail quickly becomes a decisive factor in project planning.

Inside, the design prioritizes reliability and ease of maintenance :

• multi-position unit (vertical or horizontal)

• Constant flow ECM engine, promoting even air distribution

• modular aluminum coil, corrosion resistant

• easy access to components for inspections and maintenance

These elements not only reduce long-term maintenance costs, but also help to maintain system performance year after year.

A truly noticeable acoustic comfort

Comfort isn't just about temperature. Thanks to Inverter technology, the CANAIR 4CDH Central Heat Pump continuously adjusts its output to match the building's actual needs. Unlike older systems with fixed cycles, this allows for:

• quieter operation

• a reduction of vibrations in the ducts

• improved thermal stability

• a more natural feeling of comfort

In several projects completed on the North Shore , clients have mentioned an immediate improvement in sleep quality, particularly in bedrooms located near the main ducts.

Integrated features focused on real reliability

This system avoids unnecessary options. The integrated functions address specific needs:

• Intelligent automatic defrosting , essential in a climate with frequent cycles

• prevention of cold air drafts when starting up in heating mode

• Automatic restart after power failure

• A2L refrigerant leak detection , with preventative shutdown

• self-diagnosis , facilitating rapid interventions

• Wired controller with Wi-Fi option , simple and efficient

These features increase the longevity of the system and reduce the risk of costly breakdowns, particularly during periods of intense cold.

AirGreen's expertise: a determining factor

Installing an ADD-ON central heat pump requires much more than a simple connection. At AirGreen , every installation is based on a complete analysis:

• Precise calculation of thermal loads

• validation of the existing air distribution

• electrical capacity check

• optimization of unit placement

In a recent project in Boucherville , this approach made it possible to avoid common oversizing, improve comfort on upper floors and reduce annual energy consumption.

LogisVert subsidy and project profitability

The CANAIR 4CDH R-454B | 2.5T "ADD-ON" Central Heat Pump qualifies for a $2,880 LogisVert provincial grant , immediately improving the project's profitability. AirGreen supports its clients at every stage to ensure eligibility and avoid common administrative errors.

Clear and predictable guarantees

The system is covered by a 10-year warranty on the compressor and parts , with the option to add a labor warranty. Combined with proper installation, this protection offers peace of mind appreciated by both owner-occupiers and property investors.

A tailored solution, not a universal one

At AirGreen, this model is never offered by default. It is recommended only when it truly matches the building, the occupancy pattern, and the client's energy objectives. This customized approach explains why a large portion of our clientele in Montreal , Laval , Longueuil , and on the North and South Shores comes from direct referrals.

In summary

The CANAIR 4CDH R-454B | 2.5T "ADD-ON" Central Heat Pump is a complete central solution for those looking for:

• reliable heating down to -30°C

• stable and quiet central air conditioning

• an eco-responsible and sustainable system

• A professional HVAC installation , designed to last.

For a detailed assessment, a clear quote, and installation performed according to industry best practices, contact AirGreen . We serve Montreal , Laval , Longueuil , the North Shore , and the South Shore , with an approach focused on real performance and long-term satisfaction.