CANAIR 4C28 Heat Pump - R454B | 2-Zone - 27,000 BTU Outdoor
The CanAir 4C28 R454B 27 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. it delivers 30,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $3,600 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
2 rooms, one outdoor unit, and the most powerful in its class at −8 °C.
Compared with the 26 multi-zone systems of 27,000 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 4 heads and modulates from 8,400 to 30,000 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 26 multi-zone systems of 27,000 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 excellence of Quebec comfort by AirGreen
At AirGreen , we know that a heating and cooling system isn't just about temperature: it's an investment in the well-being, sustainability, and energy performance of your home. That's why we've chosen to offer our customers the CANAIR 4C28 Heat Pump - R454B | 2-Zones - 27,000 BTU Outdoor , a high-tech solution designed to withstand Quebec's harsh winters and humid summers.
The result of proven Quebec engineering and efficiency-focused design, this heat pump combines power, versatility, and respect for the environment. Whether you live in a duplex in Laval, a condo in Montreal, or a family home on the South Shore, the CANAIR 4C28 system adapts perfectly to your needs.
Cutting-edge inverter technology: intelligence at the service of comfort
At the heart of the CANAIR 4C28 is Inverter technology , a control system that continuously adjusts compressor speed based on heating or cooling demand. Unlike conventional systems that operate in on/off cycles, Inverter technology maintains a stable temperature while drastically reducing energy consumption.
The concrete advantages of the Inverter:
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Substantial energy savings : power is adjusted in real time, avoiding unnecessary expenditure.
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Consistent and consistent comfort : the ambient temperature remains perfectly stable, without fluctuations.
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Rapid temperature rise and fall thanks to Turbo mode , ideal for freezing mornings or summer heat waves.
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Quiet operation : a reduced noise level of only 61 dB(A) outside, guaranteeing absolute tranquility inside.
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Increased durability : the compressor is less stressed, extending the life of the system.
This technological precision translates into immediate comfort , a lower energy bill and a reduced environmental footprint.
Exceptional energy performance
The CANAIR 4C28 heat pump is a benchmark in its category thanks to its remarkable efficiency coefficients:
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SEER2: 23.0 – exceptional air conditioning efficiency.
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HSPF2: 10.5 – efficient heating even in the coldest conditions.
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EER2: 12.5 – consistent energy performance.
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Guaranteed heating capacity down to -30°C , ENERGY STAR® Cold Climate V6.1 certified.
These values place the CANAIR 4C28 among the most efficient models on the wall-mounted heat pump market. You benefit from stable comfort, without loss of efficiency, even during periods of extreme cold.
A new generation of environmentally friendly refrigerant: R-454B
One of the major advantages of the CANAIR 4C28 is its use of R-454B gas , a more environmentally friendly alternative to R-410A. This new generation refrigerant has a significantly reduced global warming potential (GWP) , while maintaining optimal thermal efficiency.
Its advantages:
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Reduce greenhouse gas emissions by up to 78% compared to traditional refrigerants.
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Superior energy efficiency, ensuring real long-term savings.
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Increased safety thanks to its A2L classification (low flammability).
By choosing the CANAIR 4C28 , you are participating in Quebec's energy transition while benefiting from a state-of-the-art system.
A robust, durable design designed for Quebec's climate
The 4C28MC428H21 model is designed to meet the demands of our northern climate. Its outdoor unit is built to resist corrosion, ice, and extreme temperature fluctuations.
Its key components:
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TU1 copper coil , renowned for its mechanical strength and durability.
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External heating cables , integrated around the compressor to prevent ice build-up and ensure smooth start-up even in winter.
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Intelligent self-cleaning of indoor and outdoor coils to remove moisture and prevent mold.
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Automatic restart after a power failure, without loss of settings.
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“Follow Me” function , which adjusts the temperature according to the position of the remote control, ensuring personalized comfort.
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Quiet mode , perfect for bedrooms or home offices.
Every component of the CANAIR 4C28 has been designed to provide reliability, durability and absolute comfort —even in the most intense snowstorms.
Multi-zone flexibility that fits your lifestyle
The 2-Zone - 27,000 BTU version of the 4C28 model allows you to connect two indoor units , providing independent control for each room. This allows you to heat the living room and cool a bedroom simultaneously, depending on the needs and preferences of each occupant.
The advantages of the multi-zone system:
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Personalized comfort in each room : separate temperature per zone.
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Energy savings : only the areas in use are air conditioned or heated.
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Modular compatibility with indoor units 4C28SEH06H21 , 09H21 , 12H21 , 18H21 or 24H21 .
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Flexible installation suitable for multi-story homes, duplexes and residential offices.
This versatility makes the CANAIR 4C28 system an ideal choice for those looking for comfort, performance and freedom of configuration .
AirGreen installation: expertise, transparency and satisfaction guaranteed
Choosing AirGreen means choosing an installation carried out by certified, experienced refrigeration technicians who are passionate about their work. We know that every home is unique, which is why we always start with a free on-site assessment .
Our approach includes:
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Personalized diagnosis : analysis of your needs and the building’s configuration.
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Transparent and fixed prices : no surprises, everything is clear before the work begins.
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No deposit required : you only pay once you are fully satisfied.
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Local and fast after-sales service , for continuous support.
Our teams cover Montreal, Laval, Longueuil, the North Shore and the South Shore , guaranteeing exemplary proximity and responsiveness.
An unmatched guarantee for total peace of mind
The CANAIR 4C28 comes with a 10-year compressor and parts warranty , with the option of an additional 10-year labor warranty .
This comprehensive coverage demonstrates our confidence in the reliability of the product and AirGreen's commitment to long-lasting service. You're investing in a system built to last, backed by superior local service.
An ecological and economical solution
Choosing a CANAIR 4C28 heat pump means making a concrete gesture for the planet while reducing your energy costs. Powered by clean electricity from Hydro-Québec, it emits up to 70% less greenhouse gases than a natural gas system.
This efficiency translates into:
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Lower energy bills , summer and winter.
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A simple and advantageous energy transition when replacing an old system.
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A direct contribution to reducing CO₂ emissions in Quebec.
Suitable for all projects and all seasons
Whether you are in the construction phase , renovating or simply looking to replace an existing system , the CANAIR 4C28 - R454B easily integrates into your project.
Its compact and elegant design allows it to harmonize with any interior decor, while its discreet outdoor unit blends perfectly into the environment. Its silent operation ensures optimal acoustic comfort , summer and winter.
Why so many customers choose AirGreen
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Proudly local Quebec company , recognized for the quality of its HVAC installations.
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RBQ certified expert technicians #5645-9605-01 .
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Honest and personalized advice for each project.
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Complete support : from initial analysis to periodic maintenance.
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Human, professional and transparent customer service .
AirGreen is more than an installer: it's your trusted partner for everything related to comfort, energy performance, and sustainability.
Choose smart comfort with AirGreen
The CANAIR 4C28 Heat Pump - R454B | 2-Zones - 27,000 BTU Outdoor is much more than just a heating and cooling unit. It's an investment in your quality of life , in the performance of your home, and in protecting the environment.
Contact us today for a free on-site estimate and discover why thousands of customers in Montreal, Laval, Longueuil, the North Shore, and the South Shore trust AirGreen for their comfort.
📍 Montreal: 4951 Sainte-Catherine Street East
📍 South Shore (Showroom): 1370 Joliot-Curie Street, Boucherville, QC J4B 7L9, Loc.712
📞 514-316-2973
📧 sales@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: 30,000 BTU/h at −8 °C, 27,000 at −15 °C and 14,000 at −30 °C.
How many heads can I connect?
Up to 4 on this outdoor unit. This product is configured for 2 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 10 combinations, from 6+18 to 18+18 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$3,600 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 3712087. 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 14,000 BTU/h with a COP of 1.26.
Is it noisy?
Indoors, the reference head goes down to 19.5 dB(A). Outdoors, 61 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.