CANAIR 4CDH R-454B | 5T Central Heat Pump "ADD-ON" - Cased Coil

• BROCHURE

A central ADD-ON solution suited to existing buildings in Quebec

At AirGreen, we work every day in buildings that already have forced-air central systems: single-family homes built between the 1980s and 2015, urban duplexes and triplexes, multi-unit buildings, local shops and light institutional buildings. In these settings, the CANAIR 4CDH R-454B ADD-ON Central Heat Pump | 5T is a well-thought-out solution that fits the reality of Quebec’s building stock.

This model is designed to be added to an existing system, usually an electric furnace, without a complete overhaul of the building’s mechanical system: a 4CDH2060C21 outdoor unit and a CEB-60MX2121 cased coil set on the furnace. This ADD-ON approach gives you a modern, high-performing and energy-efficient central heat pump, while keeping reliable backup heat for the most extreme conditions.

It heats down to -30°C, uses R-454B refrigerant (global warming potential of 466, compared with 2,088 for R-410A) and is ENERGY STAR® cold climate certified.

Why the ADD-ON setup is often the best technical and financial decision

In most of the projects we assess in Montreal, Laval, Longueuil, the North Shore and the South Shore, the building already has:

• working ductwork

• an electric furnace still in good condition

• a sufficient electrical supply

• limited mechanical space

In these conditions, replacing the whole system can be needlessly expensive. An ADD-ON central heat pump like the CANAIR 4CDH 5T instead lets you:

• provide even central cooling in every zone

• cover a large share of annual heating needs

• rely less on resistance heating

• extend the life of the existing equipment

• be eligible for Hydro-Québec’s LogisVert program

• limit invasive work in the building

Heating performance designed for Quebec winters

Heating capacity and stability in cold weather

According to the NEEP data for this system (AHRI 216720951), the CANAIR 4CDH R-454B Central Heat Pump | 5T delivers:

• Nominal capacity: 5 tons

• Heating at -8°C: 37,800 BTU/h (COP 2.46)

• Heating at -15°C: 45,000 BTU/h (COP 1.8)

• Heating at -30°C: up to 22,000 BTU/h (COP 1.18)

In an ADD-ON setup, the electric furnace takes over during periods of intense cold or as a safety backup. This hybrid strategy keeps temperatures stable, reduces demand peaks and improves indoor comfort all winter.

Strong, even central cooling

• SEER2 of 16.0

• EER2 of 10.0

• Distribution through the existing ductwork, with airflow set on the furnace blower

• Effective humidity control

This type of system is particularly suited to multi-storey homes, large buildings and dwellings where wall-mounted units reach their limits.

Inverter technology: comfort, quiet and durability

The 4CDH series uses continuously modulating inverter technology that adjusts output to the building’s actual needs:

• a more stable indoor temperature

• fewer sudden swings

• better-distributed power use

• less mechanical wear

• quieter operation

The outdoor sound level is about 65 dB(A), which remains reasonable for this capacity class.

R-454B refrigerant: a forward-looking choice

The CANAIR 4CDH R-454B Central Heat Pump | 5T uses a new-generation refrigerant with a global warming potential of 466, meeting new environmental and regulatory requirements.

• a longer-lasting investment

• better compliance with future standards

• a smaller environmental footprint

At AirGreen, we handle the technical requirements of this refrigerant: leak detection, safe configuration, electrical compliance and careful start-up.

A cased coil designed for ADD-ON integration

The CEB-60MX2121 cased coil installs on the existing furnace:

• 21 × 21 × 28 in format, easy to fit in mechanical rooms

• Vertical or horizontal installation

• Blower: the existing furnace’s, whose airflow and static pressure AirGreen checks and adjusts

• Line connections of 3/8 in and 7/8 in

• Backup heat: from the existing furnace

Useful everyday features

• automatic defrost of the outdoor unit

• inverter compressor that modulates its output instead of constantly starting and stopping

• A2L refrigerant leak detection, connected and checked during installation

Hydro-Québec LogisVert aid

The CANAIR 4CDH R-454B Central Heat Pump | 5T is eligible for Hydro-Québec’s LogisVert program, with an indicative amount of $4,536. Only Hydro-Québec confirms the aid granted. AirGreen helps you check eligibility and prepare the required documents.

Warranty and long-term peace of mind

• 10 years on the compressor

• 10 years on parts

• 6 years on labour, directly from the distributor (extension available)

At AirGreen, we clearly explain the warranty conditions and help our clients choose additional protection suited to their use.

Why trust this project to AirGreen

Installing a high-performing ADD-ON central heat pump takes real expertise: assessing heating needs, checking the electrical supply, integrating with the existing furnace, balancing the ductwork and a precise start-up.

• a rigorous technical approach, under AirGreen’s RBQ licence 5645-9605-01

• more than 15 years of field experience

• good knowledge of Greater Montreal buildings

• full transparency on recommendations and costs

To see installations completed by our teams, visit our Our projects page.

Conclusion

The CANAIR 4CDH R-454B "ADD-ON" Central Heat Pump | 5T is a complete, reliable central solution suited to Quebec’s climate, ideal for modernizing an existing system without replacing it entirely.

To find out whether this setup suits your building, get a clear estimate or check your LogisVert eligibility, contact AirGreen directly at 514-316-2973 or sales@airgreen.ca.

Warranty: 10 years on the compressor, 10 years on parts and 6 years on labour, directly from the distributor.