CANAIR 4C28 Heat Pump - R454B | 5-Zone - 48,000 BTU Outdoor
The CanAir 4C28 R454B 48 000 multi-zone heat pump heats and cools 5 rooms with a single outdoor unit. it delivers 45,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $5,400 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
5 rooms, one outdoor unit.
Compared with the 82 multi-zone systems of 48,000 BTU we sell. Every number on this page carries its source.
The parts that make a multi-zone system.
Tap a part to learn more.
Outdoor unit
One compressor for the whole house. It supplies up to 6 heads and modulates from 13,000 to 45,000 BTU/h depending on what the rooms call for (NEEP).
Base pan heater
A heater keeps the outdoor unit’s base pan free of ice below 1 °C and during defrost (NEEP).
Refrigerant lines
One pair of lines per head.
Indoor heads
One head per room, each with its own remote and temperature. The combination is chosen in the “Zones” menu.
Control
Each zone is set separately.
Turn rooms on and off. Watch the power being shared.
One outdoor unit supplies every head: when several rooms call at once, they share its capacity. Pick an outdoor temperature.
Tell us your rooms. We tell you if this size is enough.
Pick the number of rooms and their size. The estimate targets a −15 °C day; it is a guide, the real calculation is done room by room at your home.
The whole series at a glance: find the box that fits you.
Each box is a product: the outdoor unit’s size, and the number of heads.
At −15 °C, it still delivers 97 % of its rated capacity.
Tap a temperature: certified capacity, efficiency and the cost of one hour of heating.
It slows down, it speeds up: the certified modulation range
Light bar: from minimum to maximum capacity. Dark mark: the rated value.
At every temperature, cheaper than baseboards.
Cost of one hour at full output, for the same heat delivered. Hydro-Québec Rate D, second tier: 11.142 ¢/kWh.
The official ratings, on the same scales as before.
SEER2, HSPF2 and EER2 come from the AHRI certification. The mark shows the median of the same-size multi-zone systems we sell.
A grant you can calculate, not guess.
The capacity at −8 °C comes from Hydro-Québec’s list of October 1, 2026. $120 per 1,000 BTU/h is the rate for ENERGY STAR cold-climate heat pumps (guide v1.10).
Where it ranks among same-size multi-zone systems.
Compared with the 82 multi-zone systems of 48,000 BTU we sell, using the LogisVert list figures. Weaknesses too, said plainly.
Against three other brands in its class.
Same rated size, other manufacturers. Pick the opponent.
One multi-zone or several wall units? Both sides, honestly.
We compare both options on your floor plan during the estimate.
What to know before installing a multi-zone system.
Dimensions, wiring and lines, drawn. Then our six steps.
The outdoor unit, dimensioned
One circuit for the whole house
Published sound levels, on one scale.
We use the outdoor figure to choose where the unit goes.
What is particular about this machine.
Only facts published by ENERGY STAR, NEEP or the manufacturer.
Every number, and where it comes from.
Each line carries its source; a line with no published value is not shown.
The manufacturer’s documentation, as PDF.
Everything we have written about this system.
The alliance between power, reliability and Quebec know-how
At AirGreen , we pride ourselves on offering our customers heating, ventilation, and air conditioning (HVAC) solutions tailored to Quebec's harsh climate. When we recommend a product, we always do so with the confidence that it will withstand the icy winters of Montreal and the sweltering summers of Laval , while providing consistent comfort and real energy savings.
The CANAIR 4C28 Heat Pump – R454B | 5-Zones – 48,000 BTU Outdoor perfectly embodies this philosophy. It is not simply a high-performance device: it is a complete solution , designed, engineered and distributed for the needs of modern Quebec families. Offering cutting-edge energy efficiency , intelligent multi-zone technology and an unmatched warranty , this heat pump is the ideal choice for those looking for efficiency, reliability and peace of mind.
A heat pump designed to withstand Quebec winters
Our winters are unforgiving. At -25°C or -30°C , many traditional HVAC systems show their limits. The CANAIR 4C28 series, on the other hand, was specifically developed for these conditions. Thanks to its latest-generation inverter technology , it continuously adjusts the compressor speed to provide the exact amount of energy needed—no more, no less.
This dynamic modulation not only maintains a constant temperature , but also reduces electricity consumption by up to 30% compared to a conventional system. The result: constant thermal comfort and lower electricity bills, even during periods of extreme cold.
Key performance specifications
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Heating capacity: 49,000 BTU/h
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Cooling capacity: 47,000 BTU/h
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Refrigerant Type: R-454B (low GWP, environmentally friendly and safe)
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SEER2 coefficient: 23.0
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HSPF2 coefficient: 11.0
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Exterior noise level: 65 dB(A)
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Supported zones: up to 6 indoor units
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Operating temperature range: -30°C to +50°C
This robustness makes the CANAIR 4C28 one of the few systems capable of ensuring stable performance under extreme temperatures , without any significant drop in power, while guaranteeing quiet and smooth operation.
The power of multi-zone: tailor-made comfort
The CANAIR 4C28 's 5-Zone system offers the ability to adapt comfort to each space in the home. Whether it's for a large residence in Longueuil , a duplex in Ahuntsic , or an urban condo in Rosemont , this flexibility allows you to individually control each zone according to your actual needs.
Imagine: the living room maintained at 22°C during the day, the master bedroom at 19°C for a peaceful sleep, and the office gently cooled for optimal comfort while working from home. With its independent room control, the CANAIR 4C28 transforms the way we experience thermal comfort.
Intelligent and precise control
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Optional Wi-Fi control : Manage the temperature of each room remotely via an intuitive mobile app.
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“Follow Me” function : the remote control senses the ambient temperature and automatically adjusts the airflow for perfect precision.
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Turbo mode : ideal for quickly reaching the desired temperature before a meal or an evening with the family.
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Complete self-cleaning : Indoor and outdoor coils automatically dry to prevent mold and mildew.
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Built-in heating cables : prevent ice buildup on the base of the outdoor unit, extending compressor life.
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Automatic restart : After a power failure, the system resumes its previous settings without manual intervention.
This combination of smart technology and practical design makes the CANAIR 4C28 a benchmark in the high-end multi-zone heat pump category.
Energy efficiency at the heart of the design
Every component of the CANAIR 4C28 is designed to maximize energy efficiency and reduce operating costs. The inverter compressor continuously adjusts its frequency, allowing for low-rpm operation when demand is low. Unlike traditional systems with stop-start cycles, the Canair maintains a perfect balance, without wasting energy.
This fine management of consumption results in:
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Energy savings measurable from the first months of use;
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Reduced mechanical stress on internal components, extending the life of the device;
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Constant temperature stability , avoiding unpleasant variations.
Additionally, R-454B refrigerant represents a major breakthrough: it offers superior thermal performance while meeting the strictest environmental standards. Its global warming potential (GWP) is approximately 75% lower than that of R-410A, making it a responsible and sustainable choice.
The CANAIR guarantee: a guarantee of trust and peace of mind
When you invest in an HVAC system, you're looking for reliability. With the CANAIR 4C28 , that peace of mind is guaranteed. The manufacturer offers a standard 10-year parts and compressor warranty , and 6 years on labor, straight from the distributor. It is also possible to extend the labor warranty up to 10 years.
This exceptional coverage demonstrates the distributor's confidence in the quality of its product. It also ensures AirGreen customers receive comprehensive, fast, and worry-free service—backed by our own team of certified refrigeration technicians.
An installation by AirGreen: precision, cleanliness and professionalism
Every installation project is handled with the rigor that AirGreen is known for throughout the Greater Montreal Area . When a customer chooses a CANAIR 4C28 , we always start with a free on-site evaluation . This crucial step allows us to understand the building's real needs: surface area, orientation, insulation, air circulation and occupancy habits.
Our experts then offer a tailor-made configuration:
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Optimal choice of number of zones and interior capacities (6,000 to 33,000 BTU per unit).
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Planning the passage of conduits and cables for an impeccable aesthetic result.
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Checking the electrical constraints (220 V) and clearances required for the outdoor unit.
Once the plan is approved, our team proceeds with the installation in compliance with RBQ standards (#5645-9605-01) and environmental regulations. Each unit is tested, calibrated, and inspected before handover. And because we believe in transparency, no deposit is required : payment is only made when the client is 100% satisfied.
Concrete example: multi-zone installation in Laval-des-Rapides
We recently installed a CANAIR 4C28 – 5 Zones – 48,000 BTU in an intergenerational home in Laval-des-Rapides . The outdoor unit was placed away from the prevailing wind, while five indoor units were carefully distributed:
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One in the main living room for even heating;
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One in the kitchen, an area with high ambient heat;
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One in the master bedroom for constant temperature sleep;
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One in the basement office for comfortable teleworking;
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One in the intergenerational section for independent control.
The owners immediately noticed an average 35% reduction in their electricity bill and impressively quieter operation compared to their previous forced-air system. In summer, the cooling performance kept the house at 23°C even during the July heatwaves.
Technology that makes a difference
Beyond its raw performance, the CANAIR 4C28 incorporates technical details that make all the difference:
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TU1 copper coil , renowned for its corrosion resistance and exceptional durability.
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Integrated multi-function board , preventing unnecessary energy consumption in heating mode.
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Built-in shut-off valve , which automatically blocks the dispersion of refrigerant if a leak is detected.
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Intelligent detection of A2L refrigerant , stopping the system to avoid any risk and immediately reporting the appropriate error code.
These elements demonstrate a level of design usually reserved for high-end commercial systems.
An ecological and responsible choice
Choosing a CANAIR 4C28 also means taking a concrete step for the environment. By replacing a natural gas system with an electric heat pump, you drastically reduce your greenhouse gas emissions , while actively participating in Quebec's energy transition .
Canair systems are Energy Star Cold Climate V6.1 certified, a standard that attests to their superior performance in cold conditions. Their all-electric operation makes them clean, sustainable, and eligible for several provincial and municipal grant programs .
The AirGreen experience: much more than just an installation
At AirGreen, our mission goes beyond selling equipment. We support our customers from the first call to post-installation maintenance .
Our commitments:
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Responsive after-sales service : rapid intervention in the event of a problem or required maintenance.
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Certified technicians trained in Canair, Fujitsu, LG, and other major brand technologies.
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Personalized maintenance tips to extend the life of your heat pump.
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Optional annual monitoring , guaranteeing the optimal performance of your device year after year.
Our approach is based on a relationship of trust and proximity with each client, whether it is an individual in Boucherville , a business in Longueuil , or a condominium in Montreal-North .
Why the CANAIR 4C28 is an investment for the future
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Four-season performance : efficient heating down to -30°C and smooth cooling up to +50°C.
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Eco-friendly technology : R-454B refrigerant with low carbon footprint.
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Absolute silence : less than 20 dB(A) in night mode for indoor units.
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Smart comfort : Wi-Fi, thermal detection, independent multi-zone control.
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Extended warranty : 10 years parts and compressor and 6 years labor straight from the distributor (labor extendable up to 10 years).
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Local support : service provided by trained and certified Quebec experts.
In summary
The CANAIR 4C28 – R454B | 5-Zone – 48,000 BTU Outdoor Heat Pump combines power, intelligence and durability . It was designed to offer Quebec families tailored comfort, real savings and long-term reliability.
Thanks to its inverter technology, high energy efficiency, high-end components and ability to withstand extreme winter conditions, it has established itself as a benchmark in the multi-zone heat pump market.
Contact AirGreen today
Trust AirGreen , your HVAC specialist in Montreal, Laval, Longueuil, the North Shore, and the South Shore . Enjoy a free in-home estimate , transparent pricing , and no-deposit installation by true refrigeration experts.
📞 Montreal: (514) 316-2973
📧 sales@airgreen.ca
🏢 4951 Sainte-Catherine Street East, Montreal
🏢 1370 Rue Joliot-Curie, Boucherville (Showroom)
🕓 Monday to Friday: 9:00 a.m. to 4:00 p.m.
AirGreen – Your comfort, our passion.
Warranty: 10 years on the compressor, 10 years on parts and 6 years on labor, straight from the distributor.
What people ask us about multi-zone systems.
Can I heat one room and cool another at the same time?
No. On a multi-zone system like this one, every head works in the same mode, heating or cooling. Each room still keeps its own set temperature.
What happens when every room calls for heat?
They share the outdoor unit’s capacity: 45,000 BTU/h at −8 °C, 47,000 at −15 °C and 24,600 at −30 °C.
How many heads can I connect?
Up to 6 on this outdoor unit. This product is configured for 5 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 73 combinations, from 6+6+6+6+6 to 12+12+12+18+18 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$5,400 according to Hydro-Québec’s list of October 1, 2026. The grant never exceeds 100 % of the cost before taxes; apply within 9 months of installation.
Is it ENERGY STAR certified?
Yes, cold climate, ID 3712093. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −30 °C. At −30 °C, it still delivers 24,600 BTU/h with a COP of 1.27.
Is it noisy?
Indoors, the reference head goes down to 19.5 dB(A). Outdoors, 65 dB(A): we place the unit away from bedroom windows.
Why a multi-zone instead of several wall units?
One outdoor unit on the wall and one circuit. In return, the rooms share the capacity, and if the outdoor unit stops, every zone stops.
What does the warranty cover?
Our sheet lists 10 years on the compressor and 10 years on parts. AirGreen extended warranty: possible.
A multi-zone system is planned room by room. At your home.
We measure every room, draw the line route and choose the right head for each zone. The on-site estimate is free and the quote arrives within 24 h.