Zephyr R-454B Triple Zone Heat Pump | 42,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore & North Shore
The Zephyr Hi Multi Xtreme R454B 42 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 28,200 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $3,384 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
3 rooms, one outdoor unit.
Compared with the 86 multi-zone systems of 42,000 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 16,000 to 35,650 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 85 % 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 86 multi-zone systems of 42,000 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
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.
Everything we have written about this system.
A premium multi-zone solution, designed for the Canadian climate
In a market where thermal comfort needs are constantly evolving, the Zephyr R-454B TripleZone Heat Pump with its 42,000 BTU compressor is positioned as an essential reference for homes and businesses in Montreal, Laval, Longueuil, the South Shore and the North Shore . Designed and manufactured according to strict Canadian standards , it is the result of a rigorous approach aimed at energy efficiency, long-term performance and quiet operation .
A 42,000 BTU compressor for unmatched efficiency across three zones
One of the major advantages of this Zephyr model is its triple-zone heat treatment capacity . Whether for a multi-story house, a divided condo or a business with different sectors, this heat pump allows precise and independent management of each space , for personalized comfort in all seasons.
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Total power : 42,000 BTU
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Eco-friendly refrigerant R-454B
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Up to 5 connectable zones (3 zones included)
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SEER2: 22.0 / HSPF2: 9.5 / EER2: 12.0
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ENERGY STAR® certification (including cold climates)
A performance designed to face Quebec winters
The Zephyr TripleZone R-454B isn't just a powerful unit on paper. Its optimal performance down to -25°C directly addresses the climatic realities of the greater Montreal area. Unlike many standard systems that struggle in extreme temperatures, this unit maintains a reliable, consistent, and quiet level of heating .
At AirGreen, we have installed this model in several single-family homes in Laval , triplexes in Longueuil , and commercial spaces on the South Shore . In each case, our customers have noted the stability of the heating and the absence of noise .
A solution created according to our quality requirements
This model is not a standard product. It has been specifically designed to meet AirGreen's demanding criteria for durability, electrical compatibility and maintenance. We have worked with the manufacturers to ensure that this multi-zone system is 100% compliant with Canadian performance and safety standards .
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R-454B gas : low environmental impact, compliant with ecological regulations
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220V voltage : stable and efficient for Quebec residences
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Exterior noise level: 63 dB(A) : one of the quietest in its category
A wide choice of interior combinations for a suitable design
Compatible indoor units offer remarkable flexibility . Whether you choose 9,000 BTU wall-mounted heads in bedrooms or 18,000 BTU units in an open-concept living room , the system fits perfectly.
Compatible models:
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ZE09CB25I
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ZE12CB25I
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ZE18CB25I
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ZE24CB25I
LogisVert Grant: up to $3,384 in assistance
Good news for homeowners: the TripleZone Zephyr heat pump is eligible for the Quebec government's LogisVert grant . This grant offers financial assistance of up to $3,384 , significantly reducing installation costs for families and property managers.
An installation controlled from A to Z by AirGreen
Our technical teams are trained to manage every detail of the installation , whether it is electrical, unit positioning or aesthetics. Each project is supervised to ensure a fast and compliant commissioning , including pressure tests, calibrations and personalized advice for the client.
Warranty and protection options
The Zephyr TripleZone comes with a 10-year warranty on the compressor and parts . For those who want complete peace of mind, we offer a 10-10-10 warranty option (compressor, parts, labor).
Why choose AirGreen?
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Zero deposit : payment at the end only
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Free home estimate
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Price transparency and no hidden fees
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Proven experience throughout the metropolitan area
Our previous installations on the North Shore have enabled several families to reduce their energy bills while enjoying customized comfort. It's this approach, both human and technical, that has been our strength for years.
Conclusion
The Zephyr R-454B | 42,000 BTU TripleZone Heat Pump is more than just a heating and cooling unit. It embodies technical excellence, ecological efficiency, peace of mind, and AirGreen expertise . For anyone looking for a reliable and sustainable solution in Montreal, Laval, Longueuil, or on both shores, it's a winning choice without compromise.
Contact us today for a free, personalized estimate.
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: 28,200 BTU/h at −8 °C, 36,000 at −15 °C.
How many heads can I connect?
Up to 5 on this outdoor unit. This product is configured for 3 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 12 combinations, from 9+9+9 to 12 + 18 + 18 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$3,384 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 3893668. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −25 °C.
Is it noisy?
Outdoors, 63 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.