CANAIR 4C28 Heat Pump - R454B | 2-Zone - 48,000 BTU Outdoor
The CanAir 4C28 R454B 48 000 multi-zone heat pump heats and cools 2 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.
2 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 perfect union between performance, efficiency and lasting comfort
At AirGreen , we know that a heat pump isn't just a heating and cooling device: it's the heart of daily comfort, an investment in energy efficiency and peace of mind. That's why we offer the CANAIR 4C28 Heat Pump - R454B | 2-Zones - 48,000 BTU , a solution designed specifically for Quebec's climate—harsh in winter, hot and humid in summer.
With its robust design, cutting-edge inverter technology , and environmentally friendly R-454B refrigerant gas , the CANAIR 4C28 embodies the new generation of high-performance, responsible HVAC systems.
A design thought out for Quebec's climate
The Quebec climate requires systems capable of performing as well at -30°C as in the middle of summer at 30°C. The CANAIR 4C28 series was made for Quebec , and this is reflected in every detail:
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Heating capacity down to -30°C without loss of efficiency;
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COLD CLIMATE V6.1 technology , validated for extreme winter conditions;
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Continuously modulated inverter compressor , ensuring stable comfort and reduced consumption;
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Corrosion-resistant TU1 copper coil for increased durability;
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Built-in exterior heating cables to prevent ice buildup;
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“Follow Me” function to maintain the exact temperature wherever the remote control is located;
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Cold air draft prevention function , ideal for starting in heating mode.
These features enable consistent performance, even in the worst winter storms, while ensuring superior comfort and quiet operation.
Cutting-edge technology for your comfort
Inverter technology: precision and economy
The secret of the CANAIR 4C28 lies in its inverter technology : it adjusts the compressor frequency in real time according to thermal demand. This means:
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Less energy waste , as the compressor never needs to stop and restart abruptly;
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Constant temperature , without the unpleasant variations of traditional systems;
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Extended system life due to reduced mechanical stress;
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Impressive silence : with only 65 dB(A) for the outdoor unit, sound comfort is guaranteed.
R-454B gas: efficiency at the service of the environment
R-454B is the new standard for low global warming potential (GWP) refrigerants. It is a great replacement for R-410A by offering:
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An environmental impact reduced by more than 75% ;
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Superior thermal performance;
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Better overall energy efficiency .
Exceptional energy performance
The CANAIR 4C28 - R454B 2-zone (outdoor model 4C28MC648H21 ) boasts impressive efficiency values :
| Indicator | Value | Interpretation |
|---|---|---|
| Cooling capacity | 48,000 BTU | Perfect for large spaces or multi-story homes |
| SEER2 | 23.0 | High-level air conditioning efficiency |
| HSPF2 | 11.0 | Efficient and economical heating |
| EER2 | 12.0 | Excellent overall energy efficiency |
| Minimum heating temperature | -30°C | Ideal for the Quebec climate |
| Tension | 220 V | Compatible with standard residential installations |
| Wi-Fi | Optional | Smart remote control |
These numbers aren't just data: they translate into real energy savings , a lower electricity bill , and a smaller carbon footprint .
Total flexibility for all configurations
The CANAIR 4C28 – R454B 2-Zone model can power up to six indoor units (depending on the chosen configuration). This allows you to adapt the comfort to each room:
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Living room and bedroom;
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Office and basement;
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Or any other combination depending on the size of your residence.
Thanks to its intelligent multi-zone , each indoor unit operates independently : you control the temperature room by room, optimizing comfort and energy consumption.
Smart and quiet operation
Thermal comfort is not limited to temperature; it also depends on the silence and gentleness of the air flow .
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In quiet mode , the CANAIR 4C28 emits less than 20 dB(A) indoors — barely a whisper.
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The self-cleaning function prevents mold growth and maintains indoor air quality.
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In the event of a power failure, automatic restart resumes the previous settings without manual intervention.
A sustainable investment guaranteed for up to 10 years
CANAIR reliability is based on more than 50 years of Quebec expertise, supported by an exclusive distributor, DESCAIR .
AirGreen Full Guarantee:
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10 years on the compressor
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10 years on parts
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10-year labor option
It's more than just a promise: it's the certainty of a reliable product, supported by an experienced local team ready to intervene quickly if needed.
Concrete example: successful installation in Laval
Recently, our AirGreen team installed a CANAIR 4C28 - R454B in a single-family home in Laval . The goal: to provide an energy-efficient system capable of heating two main areas – the ground floor and the upper floor – while replacing an older gas-fired central system.
Result :
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Estimated 35% reduction in annual energy bill ;
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Stable heating even in the cold of January at –28°C ;
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No perceptible noise pollution;
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Customer delighted with remote control via Wi-Fi mobile app.
These installations perfectly illustrate our know-how: tailor-made, reliable and durable solutions, adapted to each type of residence.
Why choose AirGreen for your CANAIR heat pump?
1. Local expertise
We operate in Montreal, Laval, Longueuil, the North Shore and the South Shore , with certified and passionate technicians .
2. Transparent service
No advance, no deposit: you pay at the end, once 100% satisfied .
3. Complete support
From model selection to professional installation , to after-sales service , AirGreen takes care of everything.
4. Free estimate
Our experts will come to your home free of charge to assess your home and recommend the best possible configuration.
In summary
The CANAIR 4C28 Heat Pump - R454B | 2-Zones - 48,000 BTU combines performance , energy efficiency and durability in a single, compact and intelligent system.
With its reliable operation down to -30°C , its ecological R-454B gas , its Inverter technology , and the 10-10-10 warranty, it represents the ideal choice for any Quebec owner looking for a high-performance and environmentally friendly solution.
Contact us today!
Get a free on-site estimate and discover how AirGreen can transform your home comfort.
📞 Montreal: (514) 316-2973
📧 sales@airgreen.ca
🏢 4951 Sainte-Catherine Street East, Montreal
🌐 airgreen.ca
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 2 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 14 combinations, from 6+24 to 24+33 (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; 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.