CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump | 30,000 BTU - Cased Coil

• BROCHURE

A central "ADD-ON" solution designed for demanding buildings in Quebec

At AirGreen , we've been installing HVAC systems for over 15 years in environments where real-world performance matters more than theoretical promises. Single-family homes, multi-unit buildings, commercial buildings, complex technical facilities: in Montreal , Laval , Longueuil , on the North Shore and the South Shore , each project presents us with different realities. The CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump is a perfect example of this intelligent adaptation approach.

The ADD-ON concept is not a compromise solution. It is a thoughtful approach to enhancing an existing central system — often an electric furnace or a well-sized duct network — in order to improve energy efficiency, thermal stability and operating costs, without requiring a complete reconstruction of the installation.

In practice, this type of project requires advanced expertise: analysis of the thermal load, a thorough understanding of defrost cycles, control of airflow rates, safe electrical integration, and precise system balancing. It is precisely in this context that the CANAIR 4CDH R-454B reveals its full potential when installed by an experienced team like AirGreen .

A system designed for rational and sustainable decisions

Building owners and managers who turn to this model are primarily looking for a reliable solution that is consistent with Quebec winters and current energy requirements:

• Stable heating capacity down to -30°C , without excessive reliance on electric backup

• R-454B (A2L) refrigerant with low environmental impact and compliant with new standards

• ENERGY STAR® and Cold Climate certification , essential for subsidies and compliance

• Central format with side discharge , ideal for confined mechanical spaces

In several projects completed in Boucherville , Repentigny, and Laval , we observed an immediate improvement in thermal comfort, particularly in areas that were previously difficult to heat evenly. These results are not accidental, but rather the product of rigorous system selection and expert installation.

Real performance, measurable efficiency and design adapted to the Quebec climate

A central heat pump designed to operate when others slow down

The CANAIR 4CDH R-454B was developed to maintain its heating capacity in conditions where many central systems quickly lose efficiency. During periods of intense cold, stable output becomes a determining factor for comfort and energy bills.

• Rated cooling capacity: 30,000 BTU

• Efficient heating down to -30°C , without frequent interruptions

• Power maintained at −8°C and −15°C , ensuring a smooth transition between seasons

• Inverter technology , enabling continuous and precise modulation

In a multi-unit apartment building in Longueuil , this stability resulted in a marked reduction in service calls related to winter discomfort. Residents noted a more consistent temperature, without sudden fluctuations, even during prolonged cold spells.

The choice of R-454B refrigerant: a technical and strategic decision

R-454B is not just an environmental argument. It represents a logical evolution in the world of HVAC , combining safety, efficiency, and regulatory compliance. Its low global warming potential makes it a sound choice for homeowners who want to protect their investment for the long term .

In practical terms, this means:

• Improved compatibility with current and future standards

• Secure integration thanks to A2L detection systems

• Increased value for residential and commercial projects

In commercial projects in Montreal , this choice also facilitates acceptance by insurers and inspectors, reducing delays and last-minute adjustments.

AirGreen's "ADD-ON" approach: what we observe in the field

Typical scenarios encountered in Greater Montreal

In our daily work, we often work on buildings with the following characteristics:

• An electric furnace that is still functional , but expensive to run.

• A well-designed, but sometimes underutilized, central conduit network

• Homeowners wishing to improve efficiency without undertaking major renovations

The CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump integrates perfectly into these configurations. On the North Shore , for example, adding the system has made it possible to cover the majority of heating needs with the heat pump, with the furnace only being used during periods of extreme cold.

The mistakes we systematically avoid

Our experience has taught us that the success of an ADD-ON project depends as much on what we avoid as on what we do:

• Undersizing of the airflow , resulting in a loss of efficiency

• Poor electrical coordination , especially with auxiliary heating elements

• Ignorance of static pressure , yet crucial for actual performance

At AirGreen , each installation is preceded by a complete and documented analysis, in order to ensure performance that meets expectations over the long term.

Acoustic comfort, everyday reliability and simplified maintenance

Quiet operation, even under full load

Comfort isn't just about temperature. The CANAIR 4CDH stands out for its controlled noise level , both inside and out. In densely populated residential neighborhoods of Montreal , this is often a crucial factor.

The ECM constant flow motor ensures smooth air circulation, without abrupt changes or unwanted noise. The result: a quieter indoor environment, appreciated in both homes and offices.

A design conceived for maintenance

For owners and managers, ease of maintenance is a key factor:

• Simplified access to internal components

• Modular sliding coil , reducing intervention time

• Integrated self-diagnostic and protection functions

In Laval , a property manager pointed out to us the decrease in unforeseen interventions since the installation of the system, which translates into better budget predictability.

Subsidies, guarantees and long-term value

Concrete and well-structured financial assistance

The CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump is eligible for the $3,000 LogisVert provincial grant . At AirGreen , we support our customers every step of the way:

• Technical validation of eligibility

• Document preparation and verification

• Strict adherence to the required criteria

This approach avoids rejections and unnecessary delays, while securing the investment.

Clear guarantees, backed by rigorous installation

• 10-year warranty on the compressor and parts

• Optional extended warranty on labor

These guarantees become truly valuable when supported by a compliant installation, carried out by certified professionals.

Why entrust your project to AirGreen

• Experienced refrigeration technicians , specializing in central systems and complex projects

• Transparent pricing , confirmed before work begins

• $5M liability insurance

• Practical expertise in Montreal , Laval , Longueuil , North Shore and South Shore

Each project is treated as a unique case, with technical choices justified and clearly explained.

Take action with AirGreen

If you're considering installing a high-performance, durable, and climate-appropriate ADD-ON central heat pump , AirGreen is your trusted partner. We analyze your existing system, your energy goals, and your technical constraints to offer you a coherent, sustainable, and cost-effective solution.

Telephone: 514-316-2973
Email: sales@airgreen.ca