Central Heat Pump ADD ON CANAIR R410A | 18000 BTU - Cased Coil

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A central heat pump designed for Quebec buildings, not for catalogues.

At AirGreen, we never choose a central heat pump solely because it boasts good theoretical performance. Our daily reality involves existing homes, duplexes, 1970s bungalows, recent slab-on-grade constructions, and ductwork systems that are sometimes undersized or have been modified over the decades. A good HVAC solution must function under these conditions , not just in a laboratory.

The CANAIR R410A ADD-ON Central Heat Pump | 18,000 BTU – Cased Coil is one of the systems we install precisely for this reason. It was designed to offer true thermal stability , consistent heating performance, and seamless integration with existing central systems. It's not a "one-size-fits-all" product, but a coherent solution for many residential buildings in Montreal, Laval, Longueuil, and on the North and South Shores .

From the very first installations, this model has distinguished itself by its ability to deliver measurable results without requiring major transformations of the building, which represents a concrete advantage for many owners.

The ADD ON principle: an often underestimated HVAC approach

An add-on system isn't meant to replace everything. It's designed to intelligently improve what already exists. In the case of the CANAIR 18,000 BTU central heat pump, this means:

• to integrate with an existing electric furnace ;

• use the existing conduit network when it is adequate;

• reduce the initial investment compared to a complete replacement;

• to maintain a reassuring redundancy of heating for the winter.

In practice, we often encounter clients who have an electric furnace that is still functional but energy-inefficient. Adding this central heat pump allows them to transfer the majority of their heating needs to a much more efficient system, while keeping the electric backup as a safety net.

In several projects carried out in Laval and on the South Shore, this approach has made it possible to significantly improve thermal comfort without disrupting the existing mechanics of the building.

Key technical specifications of the 18,000 BTU model

This specific configuration relies on a coherent set of components:

• Nominal capacity: 18,000 BTU (1.5 tonnes)

• CANAIR outdoor unit with side discharge

• Cased Coil

• R-410A refrigerant

• ENERGY STAR® and Cold Climate Compliant

• Heating operation down to -30°C

• Eligible LogisVert grant: $1,764

These characteristics are not simply marketing ploys. They define the system's actual limitations and explain why it's suitable for some buildings… and not others. At AirGreen, we always emphasize this distinction.

Central heating: stability and continuity even in periods of intense cold

A capacity maintained in the Quebec cold

One of the most crucial aspects of this central heat pump is its heating performance:

• Power at -8°C: 14,700 BTU

• Power at -15°C: 15,000 BTU

• Maintains capacity down to -30°C

• COP at -8 °C: 12.23

In practical terms, this means the system continues to produce useful heat well beyond the thresholds where many heat pumps become inefficient. In windy neighborhoods or in homes with average building envelopes, this stability makes a significant difference to energy bills and everyday comfort.

In several residences on the North Shore, we have observed a significant decrease in the use of electric backup heating after the installation of this model, even during prolonged periods of cold weather.

More even heating throughout the house

Another often underestimated advantage is the regularity of heat distribution . Thanks to the modulation offered by Inverter technology and proper management of airflow, the system avoids sudden temperature variations.

Occupants typically notice:

• fewer cold zones;

• a more stable temperature from one room to another;

• a more consistent feeling of comfort, even at low settings.

Central air conditioning: precision, not oversizing

In cooling mode, the CANAIR 18,000 BTU central heat pump offers:

• 18,000 BTU cooling

• SEER2: 16.5

• EER2: 11.7

• Airflow compatible with most residential central air conditioning systems

This configuration is particularly suitable for medium-sized homes or upper floors that overheat in the summer. During several installations in Longueuil and Brossard, clients noted an immediate improvement in comfort without excessive noise or repetitive short cycles.

The goal is not to cool down too quickly, but to maintain a stable temperature, which also contributes to better control of indoor humidity.

Side discharge: a detail that changes a lot

The outdoor unit with side discharge represents a real advantage in many residential environments:

• reduced footprint;

• easy integration near the foundations;

• installation possible in confined spaces;

• outdoor noise level of approximately 58 dB(A) for this capacity.

In Montreal, where space is often limited, this type of configuration allows for compliance with location constraints while maintaining adequate access for HVAC maintenance.

Quality of materials and long-term oriented design

Coil and thermal circulation

The internal hydrophilic aluminum coil contributes to:

• improved corrosion resistance;

• efficient heat transfer;

• increased component lifespan.

This choice is particularly relevant in environments where humidity, dust or temperature variations can accelerate the wear of standard materials.

Cabinet and exterior structure

The galvanized steel exterior cabinet with protective finish offers superior resistance to:

• to freeze/thaw cycles;

• to humidity;

• to salt spray or debris.

These factors directly influence the lifespan of the system, especially in a climate like that of Quebec.

What we systematically check during installation

A high-performing central heat pump depends as much on its sizing as on its installation. At AirGreen, every project includes a complete analysis:

• actual capacity of the conduit network;

• static pressure available;

• electrical compatibility (MCA 16A / MOP 20A);

• integration with the existing furnace;

• balancing airflow.

We have often been called upon to correct poorly calibrated installations carried out elsewhere. In several cases, simply adjusting the system and ensuring a compliant installation has transformed the occupants' experience.

LogisVert subsidy and financial logic

Eligibility for the $1,764 LogisVert grant significantly improves the financial equation of this model. For many homeowners, this reduces the net cost of the project and accelerates the return on investment.

When the building is properly insulated and the system is well sized, the savings made on electric heating quickly become measurable.

Guarantee and expectation management

This model is covered by:

• 10 years on the compressor

• 10-year warranty on parts

• Optional extended warranty on labor

At AirGreen, we take the time to clearly explain what each warranty covers, as well as the proper HVAC maintenance practices needed to preserve the system's long-term reliability.

Why entrust this project to AirGreen?

Installing an ADD ON central heat pump is not a standardized project. It requires a thorough understanding of the building, the climate, and usage patterns. At AirGreen, we provide:

• recognized field expertise in residential HVAC ;

• a transparent approach, with no surprises at the end of the work;

• experienced refrigeration technicians;

• $5,000,000 liability insurance;

• structured support from start to finish.

We are not looking to sell a product at any cost, but to install a coherent and sustainable solution.

Conclusion

The CANAIR R410A ADD-ON Central Heat Pump | 18,000 BTU – Cased Coil represents a reliable, measured solution adapted to the realities of Quebec buildings. It offers an excellent balance between performance, integration, and cost control.

For an accurate assessment of your situation, a detailed quote, or advice tailored to your building, contact AirGreen directly . Our team will thoroughly analyze your project and propose an optimized HVAC installation, without guesswork.