ELIOS E-MULTI 3-Head Heat Pump + 18000 BTU Compressor | Laval
The ELIOS E-Multi 18 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 16,000 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $1,920 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
3 rooms, one outdoor unit.
Compared with the 48 multi-zone systems of 18,000 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 3 heads and modulates from 5,700 to 16,000 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 75 % 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 48 multi-zone systems of 18,000 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.
A multi-zone solution designed for Quebec's climatic reality
At AirGreen Heat Pumps, Air Conditioning & Heating , we have been installing multi-zone systems for many years in single-family homes, duplexes, condos, and multi-unit buildings in Laval , Montreal , Longueuil , and on the North and South Shores. The ELIOS E-MULTI 3-head heat pump with an 18,000 BTU compressor is one of the solutions we recommend when the needs are clear: heating and cooling several rooms independently, without multiple outdoor units, while maintaining excellent energy efficiency in cold climates.
This multi-zone model is based on an EXHSA1832AN1 outdoor unit, compatible with up to 3 indoor units , allowing for precise temperature control in each zone. This type of configuration is particularly well-suited to homes where usage varies from room to room: bedrooms occupied at night, a home office used during the day, an open-plan living room, or an upper floor more exposed to heat gain.
A multi-zone design conceived for true flexibility
Three zones, three distinct uses
The very principle of a multi-zone HVAC system is to address concrete realities. In practice, we installed this ELIOS E-MULTI 3-head configuration in homes in Laval where:
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a master bedroom required very quiet operation at night
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An office required stable air conditioning during working hours.
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a shared living space had to absorb significant variations in thermal load.
Thanks to the compatible EWHMA06C2AS1, EWHMA09C2AS1, or EWHMA12C2AS1 indoor units, it is possible to precisely adapt the power to each room, without unnecessary oversizing. This approach improves comfort while limiting energy consumption.
Compatible with several types of indoor units
Another key strength of the ELIOS E-MULTI system is its versatility . Depending on the building's configuration, we can combine:
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wall units for the main rooms,
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Ducted units for more discreet spaces
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1-way or 4-way cassettes when architectural integration is a priority.
This flexibility allows for mixed combinations without significant loss of performance, an important advantage in complex residential projects.
Energy efficiency and operation in cold climates
Efficient heating down to -25°C
A key factor in Quebec remains heating capacity in winter. The ELIOS E-MULTI 18,000 BTU heat pump is designed to operate efficiently down to -25°C , which corresponds to the realities encountered in Laval , on the North Shore and in Montérégie during periods of intense cold.
In our actual facilities, this translates to:
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stable heating without excessive reliance on a backup system
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a reduction in on/off cycles
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constant thermal comfort, even during prolonged cold spells.
Seasonal yield and certifications
This system is ENERGY STAR® certified , including Cold Climate certification, confirming its compliance with the strictest North American requirements. Its seasonal efficiency values (SEER2, HSPF2, low-temperature COP) place this model among the balanced, multi-zone solutions for advanced residential use.
In projects carried out in Longueuil and Montreal , we observed a measurable decrease in electricity consumption compared to older split systems or direct electric heaters, particularly during the intermediate seasons.
R-454B refrigerant: a responsible technical choice
Why the R-454B is a game changer
The ELIOS E-MULTI heat pump uses R-454B refrigerant , a fluid with a lower global warming potential compared to previous generations. This technical choice reflects a gradual shift in the HVAC market towards more responsible solutions, without compromising performance.
For homeowners in Laval and elsewhere, this means:
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compliance with current and future environmental standards,
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improved durability of the installation,
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a system designed to last in an evolving regulatory context.
Integrated security and leak management
The e-Multi system incorporates refrigerant leak detection devices. In the event of a fault, the compressor stops operating and the indoor fan continues to run to reduce any potential refrigerant concentration in the room.
In our field experience, these devices enhance the peace of mind of occupants, particularly in multigenerational housing or condominiums.
Noise level and acoustic comfort
Silent interior, even during continuous operation
Indoor units compatible with this system can achieve noise levels as low as around 20 dB(A), depending on the model and fan speed. In bedrooms and offices, this aspect is often as important as thermal performance.
During a recent installation in Laval in a multi-storey house, the client specifically mentioned the notable difference between his old wall system and the new ELIOS E-MULTI configuration: the acoustic comfort became imperceptible at night, even with continuous heating.
Controlled outdoor unit
With an outdoor noise level of approximately 60 dB(A) , the outdoor unit remains within standards compatible with municipal regulations, a significant point in the dense residential areas of Montreal and Laval .
Professional setup: a determining factor
Actual sizing and configuration
A high-performing multi-zone system depends as much on its equipment as on its HVAC installation . At AirGreen, we place particular importance on:
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to the precise calculation of thermal loads,
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depending on the choice of pipe diameters,
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to the balancing of lengths between internal units.
We've observed that some poorly designed installations elsewhere lead to uneven performance between zones. With a well-thought-out ELIOS E-MULTI configuration, every room benefits from consistent, uncompromising comfort.
LogisVert subsidy and compliance
This model is eligible for the $1,620 LogisVert provincial grant , subject to applicable criteria. We systematically assist our clients in Laval , the South Shore , and the North Shore with preparing the required documents to simplify the process.
Warranty and durability
The ELIOS E-MULTI heat pump comes with a standard 10-year warranty on the compressor and parts , with additional options available as needed. This coverage reflects a commitment to durability, which is especially important for a multi-zone system designed to operate year-round.
Why choose AirGreen for your project in Laval?
Choosing AirGreen is not just about selecting equipment. It's about benefiting from:
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concrete field expertise in multi-zone HVAC installation ,
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from a team of experienced refrigeration technicians,
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a transparent, unsurprising approach,
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of a service adapted to the realities of Montreal , Laval , Longueuil , North Shore and South Shore .
We favour proven solutions, installed correctly, and truly adapted to Quebec buildings.
Conclusion and personalized support
The ELIOS E-MULTI 3-head + 18,000 BTU heat pump offers a balanced solution for homeowners seeking precise control, reliable energy efficiency in cold climates, and seamless integration into their living space. In Laval , this type of system is particularly well-suited to multi-story homes, targeted renovations, and true multi-zone heating and cooling needs.
For a detailed quote , a personalized analysis , or to discuss your HVAC system installation or replacement project, our team is available to assist you every step of the way.
Contact AirGreen today for professional advice and a solution perfectly suited to your residence.
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: 16,000 BTU/h at −8 °C, 13,500 at −15 °C.
How many heads can I connect?
Up to 3 on this outdoor unit. This product is configured for 3 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 4 combinations, from 6+6+6 to 6+6+12 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$1,920 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 3891349. 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?
Indoors, the reference head goes down to 20 dB(A). Outdoors, 60 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.