CANAIR 4CDH R-454B Central Heat Pump "ADD-ON" | 4T - 48000 BTU - Cased Coil

• BROCHURE

A central heat pump designed for existing buildings and Quebec's demanding climate

At AirGreen, we work daily in existing buildings, some decades old, where owners want to modernize their HVAC system without starting from scratch . The CANAIR 4CDH R-454B | 4T – 48,000 BTU "ADD-ON" Central Heat Pump fits perfectly into this approach: a high-performance, scalable, and practical central solution designed to integrate with existing installations while meeting Quebec's climate requirements.

This type of heat pump is particularly well-suited to single-family homes, duplexes, triplexes, and multi-unit buildings in Montreal , Laval , Longueuil , the North Shore , and the South Shore , where an electric furnace or a functional central heating system is already in place. The ADD-ON format allows for the addition of a high-efficiency central heat pump without major demolition, without replacing all the ductwork, and without taking the building out of service for weeks.

The ADD-ON concept: a controlled and intelligent energy transition

Unlike complete replacements, which often require extensive work, the ADD-ON configuration relies on a phased approach. The CANAIR 4CDH system complements and optimizes the existing installation, taking over air conditioning and a significant portion of the annual heating needs, while leaving a backup source in place for extreme periods or specific requirements.

In practice, this offers several concrete advantages:

• Immediate reduction in energy consumption , particularly for mid-season heating

• Improved thermal comfort , with a more stable and consistent temperature

• Budget optimization , without unnecessary replacement of still-functional components.

• Long-term flexibility , with the possibility of adjusting or improving the system later

At AirGreen, we frequently recommend this approach to homeowners who want to proceed step by step, without compromising on quality or overall HVAC system performance.

A side-discharge architecture adapted to urban environments

The CANAIR 4CDH stands out thanks to its side discharge design , a technical element often underestimated but extremely important in the field. This type of configuration allows for more flexible installation in confined spaces: narrow backyards, side passages, flat roofs, or areas enclosed between buildings.

In several Montreal and Longueuil neighborhoods, where every square foot counts, this format greatly facilitates the installation of the outdoor unit without compromising airflow or the building's aesthetics. For our teams, this also means a more precise, better-controlled installation and reduced handling constraints.

Solid thermal performance, even in extreme cold

With a nominal capacity of 48,000 BTU , this 4-tonne central heat pump is designed to efficiently serve large areas, whether residential, multi-unit, or light commercial.

Heating and air conditioning capacities

• Efficient air conditioning throughout the summer season , even during periods of intense heat.

• Functional heating down to -30°C , suitable for Quebec's harsh winters

• Power maintained at low temperatures , with stable performance at -8°C and -15°C

• Central air distribution , ensuring uniform comfort in all rooms

In projects carried out by AirGreen on the North Shore , this type of system has made it possible to considerably reduce the use of auxiliary heating while maintaining a constant level of comfort, even during long periods of cold.

Inverter technology: stability, silence and longevity

The inverter technology integrated into the CANAIR 4CDH plays a central role in its daily operation. Rather than operating in abrupt on/off cycles, the system continuously adjusts its power according to the actual demand of the building.

The benefits are tangible:

• More stable indoor temperature , without uncomfortable fluctuations

• Quieter operation , both for the occupants and the neighborhood.

• Reduced mechanical wear , which extends the compressor's lifespan

• Better controlled energy consumption , particularly during the shoulder seasons

In multi-unit residential buildings in Laval , this stability is a major asset in limiting noise complaints and improving the overall experience of occupants.

R-454B refrigerant: a responsible and future-proof choice

The CANAIR 4CDH uses R-454B , a next-generation A2L-rated refrigerant known for its significantly lower global warming potential compared to older fluids. This choice reflects a clear commitment to offering HVAC systems that are more compliant with current and future environmental standards.

From a technical standpoint, this refrigerant allows:

• excellent energy efficiency ;

• better compatibility with regulatory requirements;

• secure integration thanks to integrated leak detection systems.

The indoor unit is designed to automatically detect any refrigerant-related anomalies and interrupt operation as needed, thus protecting the compressor and the entire system.

An indoor unit designed for the installer and the homeowner

The indoor unit associated with the CANAIR 4CDH has been designed to facilitate both installation and long-term maintenance:

• Constant flow ECM motor , capable of maintaining a stable airflow despite pressure variations

• Modular and sliding evaporator coil , simplifying maintenance operations

• Multi-position configuration (vertical or horizontal), ideal for existing mechanical rooms

• Wide electrical compatibility , facilitating integration into buildings already powered

For owners, this translates into a more reliable system, easier to maintain, and less prone to performance losses due to fouling or flow imbalances.

Acoustic comfort adapted to everyday life

With its controlled external noise level , the CANAIR 4CDH integrates well into dense residential environments. Inside, the modulated operation of the fan and compressor contributes to a quieter atmosphere, particularly appreciated in living areas and bedrooms.

In several installations carried out by AirGreen on the South Shore , this criterion was decisive for noise-sensitive clients, particularly in row houses or shared buildings.

LogisVert subsidy: a financial advantage not to be overlooked

The CANAIR "ADD-ON" 4CDH R-454B | 4T – 48,000 BTU Central Heat Pump is eligible for the LogisVert program, with a subsidy of up to $4,128 , depending on the applicable criteria.

At AirGreen, we support our clients at every stage:

• validation of the building's eligibility;

• choosing the right indoor/outdoor unit pairing;

• conformity of certification numbers;

• Preparation and follow-up of the file after installation.

This approach greatly simplifies the process and allows the client to maximize their return on investment.

Why entrust your project to AirGreen

Installing an ADD-ON central heat pump of this type requires much more than a simple connection. Actual efficiency depends on numerous parameters: thermal load calculation, duct balancing, inverter settings, defrost management, and coordination with the auxiliary heating system.

At AirGreen, we focus on:

• experienced refrigeration technicians ;

• rigorous installation methods;

• $5 million liability insurance ;

• a transparent approach, with clear prices and no surprises after the work is completed.

Our goal is simple: to deliver a system that truly performs, year after year.

Long-term guarantee and peace of mind

The CANAIR 4CDH is covered by a 10-year warranty on the compressor and parts , with the option to add a labor warranty. For both homeowners and building managers, this protection provides significant security and predictable maintenance costs.

In conclusion

The CANAIR 4CDH R-454B | 4T – 48,000 BTU "ADD-ON" Central Heat Pump is a robust, flexible and consistent central solution for those who want to improve their comfort, reduce their energy consumption and move towards a more modern HVAC installation, without rebuilding everything.

Discuss your project with AirGreen

For a personalized assessment , a detailed quote , or to confirm your eligibility for available subsidies, contact AirGreen Air Conditioning & Heating . We serve Montreal, Laval, Longueuil, the North Shore, and the South Shore , with a professional, structured, and results-oriented approach.

Contact AirGreen today to schedule your CANAIR ADD-ON central heat pump installation.