CANAIR 4C28 Heat Pump - R454B | 4-Zone - 36,000 BTU Outdoor
The CanAir 4C28 R454B 36 000 multi-zone heat pump heats and cools 4 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.
4 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.
Energy excellence redefined for Quebec's climate
At AirGreen , we know that a high-performance heating and air conditioning system must first and foremost respond to a very real reality: Quebec's extreme climate . It is with this in mind that we offer the CANAIR 4C28 R454B – 36,000 BTU wall-mounted heat pump , a remarkably efficient multi-zone model, designed to offer optimal comfort and total reliability, whatever the season.
This heat pump stands out for its cutting-edge inverter technology , exceptional adaptability and robust construction . Whether you live in Montreal, Laval, Longueuil, on the North Shore or the South Shore, the 4C28 guarantees constant comfort and controlled energy consumption , while respecting the most demanding environmental standards.
An innovation designed for the Quebec cold
Inverter Technology: Energy Intelligence
The CANAIR 4C28's integrated inverter technology allows for precise and continuous compressor control. Rather than operating at full power all the time, the system adjusts its speed based on actual heating or cooling demand. The result:
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Maximum energy efficiency and significant reduction in operating costs.
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A stable interior temperature , without sudden variations.
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A soft start , avoiding current peaks and extending the life of the compressor.
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Ultra-quiet operation , ideal for residential and professional environments.
This intelligent mastery of performance makes the CANAIR 4C28 a preferred choice for owners seeking a balance between comfort, economy and durability.
Extreme resistance: guaranteed heating down to -30°C
The CANAIR 4C28 is a Cold Climate heat pump certified to operate down to -30°C , a rare feature in its class. This means that even in the freezing cold of January, your home remains warm and comfortable without the need for a backup heating source.
Thanks to careful design and reinforced components , the 4C28 maintains impressive efficiency in winter conditions. Heating cables integrated into the base and around the compressor prevent ice formation, ensuring a smooth and safe start.
A performance that speaks for itself
The CANAIR 4C28 R454B is a multi-zone system capable of powering up to four indoor units , and even five in maximum configuration. It is therefore ideal for medium to large sized homes , duplexes or even small businesses requiring precise temperature control per zone.
Main technical characteristics:
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Heating capacity: 36,000 BTU/h
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Air conditioning capacity: 36,000 BTU/h
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Refrigerant gas: R-454B (eco-friendly and highly efficient)
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SEER2: 23.0
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HSPF2: 10.7
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EER2: 13.0
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Exterior noise level: 65 dB(A)
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Power supply: 220 V
This level of performance translates into exemplary energy efficiency , reducing energy consumption by up to 40% compared to a conventional system. In addition, the heat pump automatically adjusts its power according to the needs of each zone, thus optimizing the distribution of heat and coolness throughout the house.
Premium design and advanced features
A structure designed to last
The CANAIR 4C28 series is manufactured from highly corrosion-resistant materials , including a TU1 copper coil known for its strength and durability. This manufacturing quality guarantees exceptional longevity , even in the most humid and cold environments in Quebec.
The compact and stylish outdoor unit blends seamlessly into any home style while remaining easy to maintain. Internal components are arranged for easy access during maintenance operations, minimizing long-term maintenance costs.
Tailor-made comfort thanks to multiple intelligent functions
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Turbo Mode: Allows you to quickly reach the desired temperature, whether in heating or air conditioning.
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Silent Mode: Ideal for nighttime or open-plan offices.
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“Follow Me” function: the remote control sensor adjusts the temperature according to your position in the room.
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Self-cleaning: The system automatically dries the coils to prevent moisture and mold.
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Anti-cold draught function: ensures gentle and even heat diffusion from start-up.
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Automatic restart: In the event of a power failure, the system resumes normal operation with the previous settings.
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WiFi (optional): to control your heat pump remotely via your smartphone.
Exceptional installation flexibility
The CANAIR 4C28 allows for a wide range of indoor unit combinations, from 6,000 to 33,000 BTU , to suit each property's unique configuration. This flexibility is particularly appreciated during renovation or modernization projects, where needs vary from room to room.
Typical configuration examples:
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Living Room: 18,000 BTU unit
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Master bedroom: 12,000 BTU unit
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Office or basement: 9,000 BTU unit
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Family Room: 6,000 BTU unit
This custom multi-zone system offers you consistent comfort while reducing unnecessary energy loss.
A guarantee of total confidence
At AirGreen , we know that purchasing a heat pump is a significant investment. That's why the CANAIR 4C28 comes with a full 10-year parts and compressor warranty , with an optional 10-year labor warranty (10-10-10) .
This extended warranty is a testament to the exceptional reliability of the product and the support of its Quebec distributor . It provides owners with unparalleled peace of mind, knowing that they benefit from professional and fast local service .
An ecological and economical solution
The CANAIR 4C28 R454B embodies the new generation of sustainable heat pumps. Operating entirely on electricity , it eliminates emissions linked to the combustion of natural gas and actively contributes to the reduction of greenhouse gases .
Thanks to its R-454B refrigerant , whose global warming potential is much lower than that of R-410A, this heat pump is part of the vision of a greener and more energy-efficient Quebec .
In addition, it is ENERGY STAR® Cold Climate certified , guaranteeing optimal performance in low temperature heating.
Long-term savings and LogisVert subsidy
The model is eligible for the provincial LogisVert grant of up to $3,600 , making the investment even more affordable. When combined with the reduction in annual energy consumption, the cumulative savings often exceed several thousand dollars over the life of the system.
An installation by AirGreen: professionalism and transparency
Entrusting your installation to AirGreen means opting for an uncompromising approach:
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Free on-site estimate , no obligation.
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No deposit required – you only pay once the work is completed and approved.
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Transparent and guaranteed pricing – no surprises at the end of the project.
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RBQ certified technicians – specializing in multi-zone HVAC systems.
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Fast and human after-sales service , based on proximity and satisfaction.
Our teams have already installed CANAIR 4C28s in residences in Montreal, Brossard, Laval, Repentigny and Saint-Jérôme , and each installation demonstrates the same commitment: quality, performance and confidence .
The AirGreen choice: comfort, expertise and sustainability
Choosing the CANAIR 4C28 R454B – 36,000 BTU heat pump means investing in cutting-edge technology that combines performance, comfort and respect for the environment .
It also means trusting AirGreen , a Quebec company proud to offer modern, sustainable HVAC solutions perfectly adapted to the needs of local families.
Whether it's a new build or a replacement for an existing system, the CANAIR 4C28 stands out as a sure value : efficient, elegant, quiet and energy-efficient.
Contact AirGreen today at 514-316-2973 or by email at sales@airgreen.ca to get your free assessment and discover how the CANAIR 4C28 can transform your comfort while reducing your energy costs.
Trust AirGreen , the leading HVAC partner in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
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 4 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 46 combinations, from 6+6+6+6 to 12+12+18+18 (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.