CANAIR 4C28 Heat Pump - R454B | 5-Zone - 36,000 BTU Outdoor
The CanAir 4C28 R454B 36 000 multi-zone heat pump heats and cools 5 rooms with a single outdoor unit. it delivers 38,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $4,560 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
5 rooms, one outdoor unit.
Compared with the 141 multi-zone systems of 36,000 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 5 heads and modulates from 10,000 to 38,000 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 100 % 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 141 multi-zone systems of 36,000 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.
Canair innovation serving Quebec comfort
At AirGreen, we believe that exceptional indoor comfort is based on the combination of cutting-edge technology, energy sustainability, and total adaptability to the Quebec climate . The CANAIR 4C28 – R454B | 5-Zone – 36,000 BTU Outdoor wall-mounted heat pump perfectly embodies this balance. This compact and versatile multi-zone system redefines the standards for residential and commercial heating and cooling in Montreal, Laval, Longueuil, the North Shore, and the South Shore.
Designed specifically for the harshest Quebec winters, this heat pump boasts impressive performance down to –30°C , while ensuring consistent, quiet, and energy-efficient comfort. Every detail—from the choice of R-454B refrigerant to the inverter technology—has been designed to reduce energy consumption , maximize comfort , and extend the system's lifespan .
Next-generation inverter technology
The CANAIR 4C28's integrated inverter technology is more than just an improvement: it's a revolution in HVAC energy management . Unlike traditional systems that operate in on/off mode, the inverter compressor continuously adjusts speed and power according to actual needs. The result:
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A reduction in electricity consumption of up to 30%;
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Constant maintenance of the ambient temperature , without sudden fluctuations;
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A soft start , reducing mechanical wear on the compressor;
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Increased system durability and quieter operation.
This intelligent regulation allows you to quickly heat a room at dawn or efficiently cool a house in the middle of summer, while maintaining optimal efficiency and minimal energy consumption .
The power of a complete multi-zone system
The CANAIR 4C28 – 36,000 BTU outdoor unit is designed to power up to five separate zones in your home. This means each room—whether it's the living room, bedrooms, office, or basement—can be independently cooled and heated , according to your preferences and occupancy schedules.
This flexibility is particularly valuable in multi-generational homes, duplexes, or multi-story properties. For example, you can:
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Maintain a stable temperature in the living room while lowering that of the bedrooms during the day;
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Efficiently heat the basement without affecting other areas;
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Offer each family member personalized control over the comfort of their room.
Thanks to its compatibility with several indoor units (from 6,000 to 33,000 BTU), the 4C28 series adapts perfectly to varied surface areas and specific energy needs.
Certified performance for extreme climates
The CANAIR 4C28 – R454B heat pump displays remarkable performance indices :
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SEER2 (air conditioning efficiency): 23.0
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HSPF2 (heating efficiency): 10.7
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EER2 (instantaneous energy efficiency): 13.0
These figures confirm energy excellence among the highest in its category. Thanks to its high-efficiency compressor and new-generation refrigerant, it offers stable heating power even at -30°C , where several competing models lose efficiency.
This provides owners with consistent comfort throughout the year, without overconsumption. Better still, this exceptional performance opens the door to provincial LogisVert subsidies of up to $3,600 , making it both an environmentally friendly and profitable investment .
A design thought for reliability and durability
The Canair 4C28 series was developed with a clear philosophy in mind: to provide a system capable of lasting performance, regardless of the season . Here are some of the features that set this heat pump apart:
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External heating cables : Prevent ice buildup around the compressor and ensure smooth restart after a winter storm.
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“Self-cleaning” function : eliminates moisture and bacteria, preventing mold inside the unit.
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Anti-cold air draught system : prevents unpleasant draughts when starting in heating mode.
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Turbo mode : allows you to quickly reach the desired temperature.
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Silent Mode : Ideal for bedrooms or offices, ensuring absolute quiet.
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Wi-Fi control (optional) : allows you to manage the system remotely from a smartphone or tablet.
In addition, the indoor units are equipped with TU1 copper coils, chosen for their excellent corrosion resistance and superior durability. The outdoor unit, meanwhile, is protected by a weather-treated galvanized steel structure—a major asset for Quebec winters.
Choosing R-454B refrigerant: a step towards a greener future
R-454B refrigerant gas represents a major advancement in HVAC. It offers a nearly 80% reduction in global warming potential (GWP) compared to R-410A, while maintaining exceptional energy efficiency.
In addition to its positive environmental impact, this A2L fluid exhibits more stable thermodynamic behavior and superior efficiency at low temperatures . In short, it allows your heat pump to produce more heat with less energy, while complying with new North American environmental regulations.
It's an eco-responsible decision, but also a guarantee for the future : investing in a Canair heat pump today means ensuring you have a system that already complies with tomorrow's environmental standards.
Silence and comfort, down to the smallest details
Comfort isn't just about temperature—it's about quietness . With an outdoor noise level capped at 65 dB(A) and indoor units ranging from 19.5 to 47 dB(A) , the Canair 4C28 series stands out for its quietness. So you can enjoy a peaceful environment, even when the system is running at full power.
This acoustic performance is made possible by redesigned fans and a compressor mounted on anti-vibration dampers. In the evening, in night mode, or during a meeting, the heat pump can be forgotten—while continuing to maintain an ideal temperature.
A complete guarantee and absolute peace of mind
The warranty offered with the CANAIR 4C28 heat pump demonstrates the manufacturer's confidence in the quality of its design:
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10 years on the compressor ;
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10 years on parts ;
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10 years on labor (optional) .
This exceptional warranty, combined with AirGreen's installation expertise, ensures complete peace of mind for the next decade. You're investing in a premium product backed by trusted local service, with no worries or surprises.
The AirGreen experience: expertise, precision and transparency
At AirGreen, each installation is carried out by RBQ certified refrigeration technicians , passionate about their profession and trained in the latest HVAC technologies.
Our approach is based on three fundamental pillars:
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Customized technical analysis : complete assessment of your home, insulation, air volume and your thermal needs.
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Meticulous and safe installation : compliance with electrical and HVAC standards, leak testing, precise calibration of air flow and refrigerant.
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Responsive and human after-sales service : our local teams intervene quickly, whether for maintenance, verification or system updates.
We firmly believe that a satisfied customer is a well-informed customer. That's why no deposit is required : you only pay when the job is completed to your complete satisfaction.
Testimonials and real results
Our clients in Montreal, Laval and Boucherville are seeing concrete results:
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25 to 35% reduction in heating costs from the first winter season;
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Increased comfort in all rooms , even at -25°C;
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Remarkable silence compared to their old system;
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Reduced maintenance , thanks to the reliability of the inverter compressor.
In a recent installation in Rosemont, a family was able to replace their old oil-fired system with a Canair 4C28 heat pump. The result: annual savings of over $800 on their energy bill and unparalleled comfort, even in January.
A sustainable, ecological and efficient HVAC solution
By choosing the CANAIR 4C28 – R454B | 5-Zones – 36,000 BTU Outdoor heat pump , you are choosing more than just a device:
you choose a philosophy of lasting comfort .
You reduce your carbon footprint, increase the energy value of your property, and enjoy optimal comfort 12 months a year.
At AirGreen, we support this transition with passion, rigor, and expertise. Each project is a mission for us: to make Quebec homes more comfortable, more economical, and more environmentally friendly .
Conclusion – AirGreen, your trusted HVAC partner
AirGreen is Quebec know-how at the service of your comfort .
From selecting the right model to complete installation, our team ensures that every detail is executed with precision and transparency.
Contact us today at 514-316-2973 or email us at sales@airgreen.ca to benefit from a 100% free on-site estimate . Together, let's transform your home into a haven of comfort, efficiency and serenity.
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: 38,000 BTU/h at −8 °C, 36,000 at −15 °C and 22,400 at −30 °C.
How many heads can I connect?
Up to 5 on this outdoor unit. This product is configured for 5 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 19 combinations, from 6+6+6+6+6 to 9+9+9+9+12 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$4,560 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 3712089. 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 22,400 BTU/h with a COP of 1.47.
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; labour is not included by the manufacturer. 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.