CANAIR 4C28 Heat Pump - R454B | 3-Zone - 48,000 BTU Outdoor
The CanAir 4C28 R454B 48 000 multi-zone heat pump heats and cools 3 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.
3 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.
Power, efficiency and reliability at the heart of Quebec comfort
At AirGreen , we believe that a high-performance heating and cooling system must first and foremost be adapted to the reality of Quebec —harsh winters, humid summers, and energy consumption that must be controlled. The CANAIR 4C28 - R454B | 3-Zone - 48,000 BTU Outdoor Heat Pump perfectly embodies this philosophy: a robust, intelligent, and energy-efficient unit, designed to deliver consistent performance, day after day, regardless of the outside temperature.
With its advanced inverter technology , its heating capacity down to -30°C and its ENERGY STAR® Cold Climate certified energy efficiency , this heat pump is an essential choice for homeowners looking for the best balance between comfort, durability and efficiency .
A multi-zone system designed for residential flexibility
One of the biggest advantages of the CANAIR 4C28 is its multi-zone design. This 3-Zone model allows you to simultaneously cool and heat multiple independent spaces with a single outdoor system. This allows each indoor unit to operate independently, allowing you to keep the living room at 22°C while keeping the master bedroom cooler at night.
This flexibility is ideal for:
-
Multi-story houses , where heat rises naturally;
-
Intergenerational housing , requiring individual temperature control;
-
Home offices , where constant comfort promotes productivity;
-
Large open spaces , where even air distribution is essential.
With compatibility with up to six indoor units , the 4C28 series is suitable for both a condo and a large single-family residence.
Inverter technology: the secret to constant comfort
The heart of the CANAIR 4C28 is its intelligent inverter technology . Unlike traditional systems that operate in on/off cycles, the inverter compressor continuously adjusts its power according to actual demand. Result:
-
Less energy consumption – up to 30% savings on your electricity bills;
-
Less mechanical wear – increased compressor longevity;
-
Less noise – smooth and quiet operation, ideal for residential environments;
-
Greater stability – a constant indoor temperature, without jolts or fluctuations.
This dynamic modulation ensures optimal comfort while maximizing the lifespan of your equipment. Every detail is designed to keep your home at the perfect temperature, without waste.
Superior energy efficiency
The CANAIR 4C28 series boasts impressive performance figures: up to 23 SEER2 in air conditioning and 11 HSPF2 in heating . These values demonstrate energy efficiency that is significantly higher than the market average.
In short, you benefit from a power of 48,000 BTU in cooling and 49,000 BTU in heating , capable of maintaining ideal comfort even when the mercury plunges to -30°C .
This level of performance is made possible thanks to:
-
A high-efficiency, continuously modulated compressor ;
-
A refrigerant gas R-454B , with low global warming potential;
-
External heating cables prevent ice build-up;
-
A durable and corrosion-resistant TU1 copper heat exchanger ;
-
An insulated and quiet body for optimal performance at all times.
This attention to detail allows the CANAIR 4C28 to exceed expectations, whether in comfort, energy consumption or reliability.
Smart features for personalized comfort
The CANAIR 4C28 heat pump isn't just about power: it's also about technological intelligence . Here are some features that will transform your daily experience:
-
Turbo mode : to reach the ideal temperature in record time, both for heating and air conditioning.
-
Self-Cleaning : An internal system that dries the coils to prevent moisture and mold.
-
“Follow Me” function : the remote control acts as a mobile sensor, adjusting the temperature according to your position in the room.
-
Quiet Mode : Sound-dampening technology that reduces noise by up to 19.5 dB(A)—perfect for the bedroom or office.
-
Automatic restart : after a power failure, the device resumes its settings without manual intervention.
-
Built-in Wi-Fi (optional) : Control your comfort remotely via your smartphone.
-
Automatic A2L refrigerant leak detection : an integrated safety system that interrupts operation in the event of an anomaly.
These innovations are not just technical: they really improve everyday comfort, while extending the lifespan of your device.
Adapted to the climate of Quebec
Extreme weather conditions require solutions specifically designed to withstand them. The CANAIR 4C28 was developed to withstand Quebec winters without compromising performance.
Its Cold Climate V6.1 system maintains constant efficiency down to -30°C, thanks to an oversized compressor and intelligent defrosting.
In summer, its performance remains just as remarkable: the heat pump effectively eliminates humidity and regulates the temperature even during the most intense heat waves. You enjoy constant freshness, without unpleasant drafts or temperature fluctuations.
Exceptional guarantee: peace of mind above all
At AirGreen, we know that an HVAC purchase is a long-term investment . That's why the CANAIR 4C28 comes with a full 10-year parts and compressor warranty and a 6-year labor warranty, straight from the distributor, with the option to add a 10-10-10 warranty that includes labor .
This guarantee demonstrates our absolute confidence in Canair's manufacturing quality. And above all, it reflects our commitment: to offer our customers a sustainable, transparent and hassle-free service .
Professional installations by AirGreen
Residential project in Montreal (Rosemont)
A Rosemont family was looking for a solution that could efficiently heat their ground floor while maintaining minimal noise levels. Our team installed a CANAIR 4C28 3-Zone with wall-mounted units in the living room, master bedroom, and basement.
The result: a 35% reduction in electricity consumption , consistent comfort in every room , and a noise level lower than a whispered conversation . All without compromising aesthetics.
Installation in Boucherville (South Shore)
In an intergenerational residence, AirGreen recommended the CANAIR 4C28 R454B for its multi-zone flexibility. Three indoor units were installed—one per unit—allowing each occupant to manage their temperature individually. Thanks to inverter technology, the heat pump reduced annual heating costs by more than $700 compared to a previous electric system.
Light commercial project in Laval
For a small professional office in Laval, the CANAIR 4C28 series proved ideal for maintaining consistent comfort in work and meeting spaces. The outdoor unit, installed on the roof, supplies three independent areas: reception, meeting room, and open space.
Employees quickly noticed an improvement in indoor air quality and remarkable thermal stability , while reducing overall energy bills.
A concrete environmental commitment
Choosing CANAIR 4C28 also means doing something for the planet. Its R-454B refrigerant gas has a significantly lower global warming potential (GWP) than R-410A, reducing greenhouse gas emissions by nearly 80% .
In addition, its electric operation—without gas combustion—fits perfectly into Quebec's energy transition . Owners can also benefit from the LogisVert subsidy , which can reach $5,280 for this model. A profitable, sustainable, and ecological investment.
Essential technical data
| Specification | Detail |
|---|---|
| Heating capacity | 49,000 BTU |
| Air conditioning capacity | 48,000 BTU |
| Areas covered | 3 (expandable to 6) |
| Minimum operating temperature | -30°C |
| Refrigerant gas | R-454B (A2L) |
| Energy efficiency | SEER2: 23 / HSPF2: 11 / EER2: 12 |
| Electrical voltage | 220V |
| Outdoor noise level | 65 dB(A) |
| Built-in Wi-Fi (optional) | Yes |
| Standard warranty | 10 years parts and compressor, 6 years labor (distributor) |
| Extended warranty possible | 10-10-10 (with labor) |
| ENERGY STAR® Cold Climate Certification | Yes |
| Provincial LogisVert grant (updated 2025) | $5,280 |
Why choose AirGreen?
-
Recognized expertise : more than 10 years of experience installing HVAC systems in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
-
Absolute transparency : prices fixed before work, no surprises at the end.
-
100% professional service : certified refrigeration technicians, trained on CANAIR products.
-
Complete support : from submission to post-installation maintenance.
-
No deposit required : pay only when completely satisfied.
Our mission is simple: to guarantee lasting comfort and total satisfaction , while reducing your energy consumption.
Conclusion: the new benchmark for smart comfort in Quebec
The CANAIR 4C28 Heat Pump - R454B | 3-Zones - 48,000 BTU Outdoor is not just a heat pump: it's a solution for the future , designed to meet today's energy, climate and economic challenges.
It combines cutting-edge technology , exceptional performance , quiet design and respect for the environment , all supported by AirGreen 's local expertise.
With the CANAIR 4C28, you choose peace of mind, performance and durability . Unparalleled comfort, summer and winter, at home in the heart of Quebec.
Get your free estimate today
📞 514-316-2973
📧 sales@airgreen.ca
Our experts travel free of charge to Montreal, Laval, Longueuil, the North Shore and the South Shore to assess your needs and offer you the ideal CANAIR solution for your home .
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 3 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 35 combinations, from 6+6+18 to 18+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.