CANAIR 4CDH R-454B Electric Furnace | 2 Tons
SEER2 (Seasonal Energy Efficiency Ratio)
HSPF2 (Heating Seasonal Performance Factor)
EER2 (Instant Cooling Efficiency)
COP at -8 °C (Heating energy efficiency)
COP at -15 °C (Heating energy efficiency)
Operating temperature down to -30 °C (MAX)
CFM (Airflow)
The perfect combination of performance, reliability and energy efficiency
At AirGreen, we know that home comfort isn’t just about warmth or coolness — it’s about reliability, durability and peace of mind. That’s why we recommend the CANAIR 4CDH R-454B Electric Furnace | 2 Tons, a high-performance solution designed for the climate realities of Quebec.
This high-efficiency central system offers an optimal balance between power, reduced consumption and respect for the environment. It is designed for homeowners looking for a complete heating and cooling solution without compromise, suited to Montreal’s harsh winters and southern Quebec’s hot, humid summers.
Designed for Quebec homes, this furnace represents the future of residential comfort: quiet, intelligent, energy-efficient and eco-responsible.
Advanced design for optimal comfort
The CANAIR 4CDH R-454B is a side-discharge system — a configuration that changes everything. Unlike vertical-discharge models, it is more compact, lighter and more flexible, making it easy to install in a variety of residential settings: small yards, basements, decks or tight spaces.
Its modern design comes with robust construction, careful sound insulation and an inverter-driven motor. The inverter continuously adjusts power to deliver smooth, stable operation, without jolts or temperature swings.
Remarkably quiet operation
With a sound level of just 28 to 44 dB(A), the CANAIR 4CDH R-454B is impressively quiet. Even at full output, it remains almost imperceptible. This quietness comes from a high-performance compressor, variable-speed fans and an anti-vibration design that absorbs unwanted resonance.
Constant comfort, down to -30°C
The heating technology of the CANAIR 4CDH R-454B is designed for extreme Quebec winters. According to the NEEP data for this system (AHRI 215449705), it delivers 20,800 BTU/h at -8°C (COP 2.42) and up to 21,600 BTU/h at -15°C (COP 1.87), and keeps heating down to -30°C (maximum capacity of 12,000 BTU/h, COP 1.43), turning every watt of electricity into useful heat.
A smart constant-airflow motor
The furnace is equipped with a constant-airflow ECM motor, which measures air pressure in the ducts in real time. If a filter is clogged or a coil is partially blocked, the system automatically adjusts its power to maintain optimal airflow. The result: lower energy use, higher efficiency and even comfort throughout the house.
An energy-efficient and durable unit
The 4CDH R-454B achieves efficiency levels among the best in its class:
SEER2: 18.3 (cooling)
HSPF2: 10.0 (heating)
EER2: 11.7
These values demonstrate superior energy efficiency, allowing households to reduce their electricity consumption without sacrificing comfort. On average, installing a furnace in this range can reduce operating costs by up to 30% compared to a traditional gas or oil system.
An ecological refrigerant
The CANAIR 4CDH R-454B uses the new R-454B refrigerant, known for its low global warming potential (GWP of 466), compared with 2,088 for the older R-410A. This choice helps reduce the system’s carbon footprint while meeting the latest environmental standards.
A range selected for Quebec
Distributed in Quebec by Descair, a Quebec family business since 1971, the CANAIR range is ENERGY STAR® cold climate certified to handle Quebec’s climate: intense frost, high humidity and large seasonal swings.
Easy maintenance and exemplary durability
A practical, accessible design
The indoor unit (model 4CDH2024F21) has been designed to make life easier for owners and technicians. The access panels to the blower, coil and electrical components are removable, allowing quick, hassle-free maintenance.
The modular sliding aluminum evaporator can be removed for cleaning or inspection, while the electrical components are limited to two main circuit boards, greatly simplifying maintenance.
Features designed for reliability
Filter accessible through a front hatch for easy replacement;
Multi-position (up, down, left, right) for adaptable installation;
Electric heating elements available up to 25 kW to match your needs;
Integrated electronic expansion valve for precise temperature control;
Automatic refrigerant leak detection system to prevent any risk.
These innovations ensure a longer lifespan, increased safety and stable performance for decades.
Key technical specifications
| Specification | Value |
|---|---|
| Indoor model | 4CDH2024F21 |
| Compatible outdoor model | 4CDH2024C21 |
| Nominal capacity | 24,000 BTU (2 Tons) |
| Power supply | 220 V / 1 / 60 Hz |
| Cooling efficiency (SEER2) | 18.3 |
| Heating efficiency (HSPF2) | 10.0 |
| Indoor sound level | 28 to 44 dB(A) |
| Refrigerant | R-454B (eco-responsible A2L) |
| Dimensions (W x D x H) | 17.52 x 21.02 x 45.00 in |
| Net weight | 105.6 lb |
| Operating temperature | -30°C to +50°C |
| Standard warranty | 10 years (compressor and parts), 6 years (labor) |
| Extended warranty | labor extension up to 10 years |
| LogisVert grant | $2,496 (indicative amount per Hydro-Québec’s list) |
Smart technology for comfort
The CANAIR 4CDH R-454B includes several automated functions designed to improve comfort and reduce maintenance needs:
Automatic self-cleaning of the indoor and outdoor coils, preventing mold growth;
“Follow Me” function, which adjusts the temperature according to the position of the remote control;
Cold draft protection, ensuring a gentle temperature rise at start-up;
Automatic restart after a power failure, retaining programmed settings;
Integrated heating cables around the compressor to prevent ice formation;
Intelligent defrost mode, maintaining performance even at low temperatures;
Self-diagnosis and self-protection for increased reliability;
Integrated Wi-Fi control, allowing remote control via app or wall thermostat.
These smart features ensure even, economical and worry-free comfort, day after day.
A complete and reassuring warranty
CANAIR backs its products with a basic 10-year parts and compressor warranty, plus 6 years on labor, straight from the distributor. It is also possible to extend the labor warranty up to 10 years. At AirGreen, we back this promise with responsive, local after-sales service provided by our own certified technicians.
Our customers benefit from personalized follow-up, seasonal maintenance visits and complete support to maximize the lifespan of their installation.
A trusted partnership with AirGreen
Recognized expertise in Montreal and surrounding areas
As a Montreal-based HVAC company, AirGreen completes hundreds of installations of residential and commercial heating and air conditioning systems every year. Our team of certified refrigeration technicians, working under AirGreen's RBQ licence 5645-9605-01, has in-depth knowledge of the local market — home insulation, electrical codes, energy efficiency requirements and support programs such as Hydro-Québec's LogisVert.
Commitment to quality and transparency
At AirGreen, we believe that trust is built through transparency and rigor.
No advance payment required: you pay at the end, once the work is completed and approved.
Clear, detailed quotes: no hidden costs, no surprises.
Satisfaction guarantee: if you are not fully satisfied, we make it right immediately.
Projects throughout Quebec
Our CANAIR installations are growing in Montreal, Laval, Longueuil, Boucherville, Repentigny, Terrebonne and Blainville. Each project is carefully planned to deliver an impeccable result that is attractive, efficient and durable.
Why choose the CANAIR 4CDH R-454B Electric Furnace
Heating down to -30°C — suited to the Quebec climate.
Quiet operation thanks to inverter technology and anti-vibration components.
High energy efficiency: SEER2 of 18.3 and HSPF2 of 10.0.
Eco-responsible R-454B refrigerant with a low carbon footprint.
Simplified maintenance: easy access to filters and internal components.
Full 10-10-6 warranty (compressor, parts, labor).
Eligible for the LogisVert grant: indicative amount of $2,496.
Quebec distribution (Descair), with local technical support.
AirGreen: your HVAC expert in Montreal
Whether you own a condo, a single-family home or a rental building, AirGreen supports you every step of the way:
Free on-site assessment;
Personalized advice on the best heat pump and electric furnace options;
Professional installation under our RBQ licence;
Fast, local after-sales service.
Our mission is simple: to offer you the best possible comfort with the best energy efficiency, while respecting the environment and your budget.
Conclusion: CANAIR performance, AirGreen confidence
The CANAIR 4CDH R-454B Electric Furnace | 2 Tons is much more than a heating appliance: it’s a complete, sustainable solution for modern Quebec homes.
Its high efficiency, intelligent design, low sound level and ecological refrigerant make it a benchmark among HVAC systems.
By choosing AirGreen, you benefit not only from a premium product, but also from local expertise, attentive service and a total satisfaction guarantee.
AirGreen Air Conditioning & Heating — your comfort, our pride.
Contact us today
AirGreen Air Conditioning & Heating
4951 Sainte-Catherine Street East, Montreal
1370 Rue Joliot-Curie, Boucherville (Showroom – Unit 712)
514-316-2973
sales@airgreen.ca
Get a 100% free on-site estimate and discover why AirGreen is the preferred choice of homeowners in Montreal, Laval, Longueuil, the North Shore and the South Shore.
Warranty: 10 years on the compressor, 10 years on parts and 6 years on labor, straight from the distributor.