CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump | 18000 BTU - Cased Coil

• BROCHURE

A central heat pump designed for Quebec's climatic realities and existing buildings

At AirGreen , we have been installing and integrating HVAC systems for over 15 years in Montreal , Laval , Longueuil , on the North Shore and the South Shore . This field experience has allowed us to observe one very clear thing: a central system that performs well on paper is not necessarily a system truly suited to Quebec winters, existing homes, and the mechanical constraints of residential and multi-unit buildings.

The CANAIR ADD-ON 4CDH R-454B – 18,000 BTU central heat pump addresses these challenges precisely. It was designed to offer seamless integration with existing central systems , while providing tangible improvements in comfort , measurable energy cost reductions , and full compatibility with provincial subsidy programs .

This 1.5-tonne (18,000 BTU) model represents a particularly balanced solution for homeowners wishing to upgrade their installation without having to completely rebuild their HVAC system.

The ADD-ON approach: a realistic, economical and technically sound solution

In the reality of the Quebec market, the majority of residential buildings already have an aging ductwork system, electric furnace, or central heating system. Replacing the entire infrastructure is not always necessary or even relevant.

The ADD-ON concept is based on a simple yet effective logic: leveraging existing resources while improving overall system performance. In practice, this allows for:

• To significantly reduce construction costs

• To limit structural modifications

• To speed up installation times

• To ensure a gradual and controlled energy transition

• To preserve the thermal balance of the building

During a project in Saint-Hubert , we integrated this CANAIR 4CDH central heat pump into an existing electric furnace that was over 15 years old. After commissioning, the client noticed significantly improved thermal stability , better air distribution , and a noticeable reduction in electricity consumption from the very first winter.

Heating performance designed for extreme winters

One of the most critical points in choosing a central heat pump in Montreal and Montérégie remains the actual ability to maintain heating when temperatures drop below critical thresholds.

The CANAIR 4CDH R-454B 18,000 BTU is designed to operate reliably down to -30°C , without excessive reliance on supplemental heating. This capability isn't just a marketing claim; it translates into consistent comfort during periods of extreme cold.

Key technical data for the 18,000 BTU model

• Nominal cooling capacity : 18,000 BTU

• Heating capacity maintained down to : -30 °C

• Heating capacity at -15°C : 18,000 BTU

• Power at -8°C : 15,200 BTU

• Seasonal efficiency SEER2 : 16.1

• Seasonal efficacy HSPF2 (IV) : 9.5

• Coefficient of performance (COP) at -15 °C : up to 2.0

• Outdoor noise level : 59 dB(A)

• Voltage : 220 V

• Refrigerant gas : R-454B (A2L)

These features make this model particularly suitable for well-insulated single-family homes , duplexes , triplexes and some condos with central ducts .

The R-454B refrigerant: a well-considered technical and environmental choice

The choice of R-454B marks a significant evolution in the world of HVAC. This new generation refrigerant is distinguished by a global warming potential that is considerably lower than that of older gases used in central systems.

In practical terms, this means:

• A reduced environmental footprint

• Better compliance with future standards

• Increased acceptability for grant programs

• A secure installation thanks to A2L's integrated leak detection systems

In several recent projects in Laval and on the South Shore , this criterion has been decisive for clients wishing to align their HVAC system with a more responsible approach, without sacrificing winter performance.

An indoor unit designed for reliability, maintenance and longevity

The indoor unit associated with this system does more than just circulate air. It plays a central role in maintaining airflow stability , managing humidity , and ensuring the overall durability of the system .

Concrete characteristics that make the difference

• Constant flow ECM motor , ensuring stable pressure in the pipes

• Multi-position configuration (vertical upward, downward or horizontal)

• Hydrophilic aluminum evaporator coil , corrosion resistant

• Sliding modular evaporator , facilitating periodic maintenance

• Optional electric heating elements up to 25 kW

• Electronic expansion valve included

• Integrated refrigerant leak detection system

• Wired Wi-Fi controller included

During an installation in a multi-unit residential building in Montreal North , this modular design significantly reduced intervention time while ensuring easy access for future maintenance.

Acoustic comfort is often underestimated, but essential.

A central heating system often operates for long periods, especially during cold snaps or periods of intense heat. The inverter technology integrated into the CANAIR 4CDH allows for continuous power modulation, preventing sudden starts and short cycles.

The benefits observed among our clients are very tangible:

• More stable indoor temperature

• Reduction of humidity fluctuations

• Reduction of perceived noise in living spaces

• Improved nighttime comfort, even with prolonged air conditioning

In a Boucherville residence, a client mentioned to us that the system remained virtually imperceptible, even on very hot days when the air conditioning was running continuously.

LogisVert grant: well-regulated financial assistance

The CANAIR ADD-ON 4CDH 18,000 BTU central heat pump is eligible for the LogisVert program , with a provincial subsidy currently valued at $1,824 .

At AirGreen , we support our clients at every stage:

• Technical validation of eligibility

• Choosing a model that meets the criteria

• Installation meeting program requirements

• Complete documentation for the grant application

This approach avoids the refusals, delays and frequent errors encountered when the process is poorly prepared.

Why entrust the installation to AirGreen

Installing an ADD-ON central heat pump requires much more than a simple connection. Each building has determining variables: insulation, duct configuration, heat losses, actual heating and cooling needs.

Our method is based on:

• A thorough thermal analysis

• Precise tonnage sizing

• A seamless integration into the existing system

• Technicians specializing in central systems

• $5,000,000 liability insurance

• Clear and detailed pricing , provided before the work begins

It is this rigor that makes it possible to obtain reliable, durable and consistent installations, both in single-family homes and in multi-unit buildings.

Who is the 18,000 BTU model specifically designed for?

The CANAIR 4CDH R-454B 18,000 BTU is ideal for:

• Well-insulated single-family homes

• Duplex and triplex

• Condos with existing central ducts

• Energy transition projects

• Partial replacement of an aging central system

A well-chosen tonnage helps to avoid short cycles, optimize seasonal efficiency and ensure increased system longevity.

Conclusion

The CANAIR ADD-ON 4CDH R-454B | 18,000 BTU central heat pump represents a balanced, reliable solution perfectly suited to the realities of Quebec . It combines winter performance , energy efficiency , environmental responsibility , and integration flexibility , without compromising on comfort.

For a personalized assessment , a detailed quote , or to check your eligibility for subsidies , contact AirGreen directly. Our team will take the time to analyze your situation and offer a solution truly tailored to your building.

AirGreen – Central air conditioning, heating and heat pumps adapted to the Quebec climate.