CANAIR 4CDH R-454B Central Heat Pump "ADD-ON" | 3T - Cased Coil

• BROCHURE

A central heat pump truly adapted to existing Quebec buildings

At AirGreen Air Conditioning & Heating , we have been installing ADD-ON central heat pump systems for many years in very real-world situations: existing homes with electric furnaces, phased energy renovations, multi-unit dwellings, urban duplexes, and buildings where indoor or outdoor space is limited. The CANAIR 4CDH R-454B | 3T "ADD-ON" Central Heat Pump is perfectly suited to this real-world context.

This system isn't designed solely for new construction or ideal configurations. It's a central solution designed to intelligently modernize an existing system without requiring demolition or starting from scratch. Its side-discharge format, its ability to operate down to -30°C , and its ADD-ON architecture make it a particularly relevant choice for the building stock in Montreal , Laval , Longueuil , the North Shore , and the South Shore , where houses and buildings often present very real technical challenges.

In several projects carried out by our teams, this model has made it possible to improve thermal comfort, reduce dependence on auxiliary electric heating and stabilize energy costs, while limiting the scope of the work.

Reliable winter heating, even in extreme cold.

A performance that can be measured when the temperature drops

The CANAIR 4CDH R-454B | 3T isn't just designed to look good on paper. It's designed to deliver real-world performance in winter conditions , where many systems quickly reach their limits.

Specifically, this central heat pump offers:

• Continuous operation down to -30°C

• Rated capacity of 36,000 BTU

• Power at -8°C: approximately 29,200 BTU

• Capacity maintained at -15°C: 36,000 BTU

• High coefficient of performance (COP) at low temperature

In practice, this means the system continues to produce useful heat even when outside temperatures plummet. In several installations on the North Shore , we observed a significant reduction in the activation of electric heating during periods of intense cold, which directly translates into more stable energy consumption and more predictable bills.

More consistent heat, without sudden cycles

Thanks to inverter technology , the compressor continuously adjusts its speed according to the building's actual needs. This modulation allows for:

• A more stable indoor temperature

• Fewer abrupt changes between starting and stopping

• A more consistent feeling of comfort in all rooms

• Reduced mechanical wear in the long term

For owners of multi-story or open-concept homes, this stability is a tangible daily advantage.

Efficient and well-distributed central air conditioning

During the summer period, the CANAIR 4CDH 3T Central Heat Pump acts as a high-performance central air conditioning system, capable of meeting the needs of the increasingly hot and humid summers we experience in Quebec.

Key features include:

• Cooling capacity: 36,000 BTU

• Excellent seasonal efficiency (SEER2 and EER2)

• High airflow , suitable for central duct systems

• Effective dehumidification , particularly appreciated during periods of high humidity.

In several residences in Longueuil and on the South Shore , this system has made it possible to eliminate persistent hot zones and significantly improve the comfort of upper floors, which are often more difficult to air condition.

R-454B refrigerant: compliance, safety and long-term vision

The CANAIR 4CDH uses R-454B refrigerant , a new generation fluid classified A2L , recognized for its low global warming potential compared to older refrigerants.

This technical choice offers several concrete advantages:

• Reducing the system's environmental footprint

• Better compliance with current and future standards

• Compatibility with energy transition programs

• A long-term solution, designed to last.

For many customers keen to invest in a sustainable system that complies with new energy guidelines, this point has become a determining criterion.

ADD-ON Design: A pragmatic and economical approach

Ideal integration with existing systems

The ADD-ON concept means that the heat pump is intelligently added to an existing system, usually an existing electric furnace . This approach allows for:

• To preserve the existing network of conduits

• To avoid heavy and costly work

• To combine heat pump and auxiliary heating in an optimized way

• To improve overall efficiency without major transformation

In several projects in Montreal , this approach has made it possible to modernize aging systems without disrupting the building structure or the occupants' routine.

Side discharge format: an often underestimated advantage

The side-discharge design of the outdoor unit offers valuable flexibility:

• Installation possible in confined spaces

• Better visual integration in backyards or urban areas

• Easy access for maintenance

• Controlled noise level

In some densely built-up areas, this format makes all the difference and allows for installations that would otherwise be impossible with larger units.

Indoor unit designed for easy installation and maintenance

The indoor unit associated with the CANAIR 4CDH 3T is distinguished by a design focused on reliability and simplicity:

• Multi-position configuration (vertical or horizontal)

• Constant flow ECM motor , capable of adapting to pressure variations

• Corrosion-resistant aluminum coil

• Easy access to components , simplifying maintenance

• 115V / 230V compatibility

For owners of multi-unit dwellings or property managers, this ease of maintenance represents a significant long-term gain.

Useful built-in features for everyday use

The CANAIR 4CDH central heat pump incorporates several features designed for comfort, safety, and system durability:

• Automatic defrosting in winter conditions

• Preventing cold air drafts at startup

• Automatic restart after power failure

• Self-diagnosis and self-protection

• Refrigerant leak detection with automatic shut-off

• Wired control with Wi-Fi option for precise management

These features are not secondary: they contribute directly to the reliability of the system and the peace of mind of the occupants.

Professional setup: a determining factor

The importance of sizing and adjustments

At AirGreen , we regularly observe that a well-installed system can offer significantly better performance than an improperly sized system, even if it is the same model.

For each project, our teams pay particular attention to:

• The actual thermal analysis of the building

• The precise sizing of the capacity (3 tonnes adapted to the volume)

• Balancing the conduit network

• Adjusting the airflow and static pressure

• Optimal integration with auxiliary heating

These steps are essential to ensure stable and sustainable performance.

Electrical data and compliance

The 3-tonne version includes, among other things:

• Voltage: 220 V

• Minimum circuit ampacity (MCA): 29 A

• Maximum protection (MOP): 30 A

• Outdoor noise level: approximately 62.5 dB(A)

Each installation is carried out in compliance with the electrical and mechanical standards in force in Quebec.

LogisVert subsidy and added value

The CANAIR 4CDH R-454B | 3T Central Heat Pump is eligible for the LogisVert provincial grant , currently valued at $3,504 . This financial assistance significantly reduces the net cost of the project and accelerates the return on investment.

At AirGreen, we support our clients at every stage: validation of eligibility, technical documentation, and advice to maximize available aid.

Long-term guarantee and peace of mind

This system is offered with:

• Basic 10-year warranty on the compressor and parts

• Extended warranty option on labor

This coverage is particularly appreciated in residential and multi-unit projects, where long-term reliability is a central criterion.

Why entrust your project to AirGreen?

• Recognized expertise in HVAC installation in Montreal , Laval , Longueuil , North Shore and South Shore

• Rigorous and personalized technical approach

• Clear and transparent pricing

• Experienced refrigeration technicians

• $5,000,000 liability insurance

• Comprehensive support before, during and after installation

We never offer a central heat pump without ensuring that it truly meets the building's needs and the client's expectations.

Conclusion: a coherent and sustainable central solution

The CANAIR 4CDH R-454B | 3T "ADD-ON" Central Heat Pump represents a complete and realistic solution for the Quebec market: heating performance down to -30°C , efficient air conditioning, intelligent ADD-ON integration, modern refrigerant and eligibility for subsidies.

For a personalized assessment , a detailed quote , or to discuss the best configuration for your building, contact AirGreen Air Conditioning & Heating directly. Our specialists will take the time to analyze your situation and offer you a perfectly tailored solution.