A central heat pump designed for Quebec buildings, not for catalogues
At AirGreen, we never choose a central heat pump just because it shows good theoretical performance. Our daily reality is existing homes, plexes, 1970s bungalows, recent slab-on-grade construction, and duct networks that are sometimes undersized or modified over the decades. A good HVAC solution has to work in those 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 for exactly that reason. It delivers consistent heating performance and logical integration with central systems already in place. It’s not a “one-size-fits-all” product, but a coherent solution for many residential buildings in Montreal, Laval, Longueuil, the North Shore and the South Shore.
The ADD ON principle: an often underestimated HVAC approach
An ADD ON system isn’t meant to replace everything. It is meant to intelligently improve what already exists. For the CANAIR 18,000 BTU central heat pump, this means:
integrating with an existing electric furnace;
using the existing duct network when it is adequate;
reducing the initial investment compared with a complete replacement;
keeping reassuring heating redundancy for winter.
In practice, we often meet clients whose electric furnace still works but is energy-hungry. Adding this central heat pump shifts a large part of the heating load to a more efficient system, while keeping the electric backup as a safety net.
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 tons)
CANAIR side-discharge outdoor unit
Cased Coil indoor coil
R-410A refrigerant
ENERGY STAR® cold climate certified (AHRI combination 211644141)
Heating operation down to -30°C
Hydro-Québec LogisVert aid: $1,764 (indicative amount)
These characteristics define the system’s real operating limits and explain why it suits some buildings… and not others. At AirGreen, we always insist on this nuance.
Central heating: stability and continuity even in intense cold
Capacity that holds up in the Quebec cold
One of the most decisive aspects of this central heat pump is its heating behaviour (certified combination AHRI 211644141, NEEP data):
Capacity at -8°C: 14,700 BTU
Capacity at -15°C: 15,000 BTU
Capacity at -30°C: 12,500 BTU
COP at -8°C: 2.6
In practical terms, the system keeps producing useful heat in deep cold, which reduces the use of electric backup heat when the building and the system are properly sized.
More even heating throughout the house
Another often underestimated advantage is the evenness of heat distribution. Thanks to inverter modulation and proper airflow management, the system avoids sudden temperature swings:
fewer cold spots;
a more stable temperature from one room to the next;
a more consistent feeling of comfort, even at a low setpoint.
Central air conditioning: precision, not oversizing
In cooling mode, the CANAIR 18,000 BTU central heat pump offers:
18,000 BTU of cooling
SEER2: 16.1
EER2: 11.7
Airflow compatible with most residential central duct systems
This configuration is particularly suited to mid-sized homes or upper floors that overheat in summer. The goal is not to cool too fast, but to maintain a stable temperature, which also helps control indoor humidity.
Side discharge: a detail that changes a lot
The side-discharge outdoor unit is a real advantage in many residential settings:
smaller footprint;
easier placement near foundations;
possible installation in tight spaces;
outdoor sound level of about 58 dB(A) for this capacity.
In Montreal, where space is often limited, this configuration respects location constraints while keeping proper access for HVAC maintenance.
A design built for the long term
The outdoor cabinet with a protective finish is designed to stand up to:
freeze/thaw cycles;
humidity;
salt spray and debris.
Together with regular maintenance, these elements directly influence system life, especially in a climate like Quebec’s.
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 duct network;
available static pressure;
electrical compatibility (MCA 16A / MOP 20A);
integration with the existing furnace;
airflow balancing.
A well-chosen system that is poorly calibrated rarely gives the expected results, which is why these checks are part of every installation.
Hydro-Québec LogisVert aid
This combination (AHRI 211644141) is on Hydro-Québec’s LogisVert list of October 27, 2026, with an indicative amount of $1,764. For many owners, this aid lowers the net project cost. The amount depends on the program’s conditions; only Hydro-Québec confirms the aid granted.
Warranty and managing expectations
This model is covered by:
10 years on the compressor
10 years on parts
6 years on labour, straight from the distributor, with an optional extended warranty
At AirGreen, we take the time to clearly explain what each warranty covers, as well as the HVAC maintenance practices needed to keep the system reliable over the long term.
Why entrust this project to AirGreen
Installing an ADD ON central heat pump is not a standardized project. It requires a fine understanding of the building, the climate and how the home is used. At AirGreen, we bring:
field expertise in residential HVAC;
a transparent approach, with the price confirmed before the work;
experienced refrigeration technicians, under AirGreen’s RBQ licence 5645-9605-01;
$5,000,000 in liability insurance;
structured support from start to finish.
We are not trying to sell a product at any cost, but to install a coherent and lasting solution. To see installations completed by our teams, visit our Our projects page.
Conclusion
The CANAIR R410A ADD ON Central Heat Pump | 18,000 BTU – Cased Coil is a reliable, measured solution suited to the realities of Quebec buildings. It offers a good 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 at 514-316-2973 or sales@airgreen.ca.
Warranty: 10 years on the compressor, 10 years on parts and 6 years on labour, straight from the distributor.