ELIOS E-MULTI 3-Head Heat Pump + 48,000 BTU Compressor | Longueuil
The ELIOS E-Multi 48 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 36,800 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $4,416 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 36,800 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 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.
A multi-zone solution designed for the climatic and architectural realities of the South Shore
At AirGreen, we have been installing multi-zone systems for many years in Longueuil , Montreal , Laval , on the South Shore and the North Shore . The ELIOS E-MULTI 3-head heat pump with a 48,000 BTU compressor is one of the solutions we recommend when there are multiple comfort needs, clearly defined spaces, and the goal is to avoid multiple outdoor units.
This system was designed to meet demanding residential projects: multi-story single-family homes, renovated plexes, condos with aesthetic constraints, or multi-unit buildings where each zone must be controlled independently.
Understanding the actual operation of an ELIOS multi-zone heat pump
One single outdoor unit, multiple controlled zones
The fundamental principle of the ELIOS E-MULTI system is based on a single outdoor unit capable of powering up to six indoor units , three of which are standard in this particular model. Each zone operates independently: temperature, operating mode, airflow, and schedules can be set independently.
In practice, this allows, for example:
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a room maintained at 20°C at night
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a living room that is more heated in the evening.
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an air-conditioned office during the day, even if the other areas are shut down.
This flexibility is particularly appreciated in Longueuil , where many homes have different solar orientations and unequal heating needs.
Compatible with several types of indoor units
One of the major advantages of the ELIOS E-MULTI range is its compatibility with different indoor unit formats:
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wall units,
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ducted units
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ceiling cassettes,
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consoles.
For example, we installed this system in a duplex in Saint-Hubert , with a wall unit on the ground floor and a discreet ducted unit upstairs, allowing us to maintain the interior aesthetics while ensuring uniform air distribution.
Actual heating performance: a critical issue in Quebec
Efficient heating down to -25°C
The ELIOS E-MULTI 48,000 BTU heat pump is designed to deliver reliable performance down to -25°C , a crucial factor for the climate of Longueuil and the Montérégie region . Unlike some multi-zone systems that rapidly lose capacity in very cold weather, this one maintains stable heat output thanks to an optimized compressor design and intelligent management of the R-454B refrigerant.
In our facilities, this translates to:
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less reliance on auxiliary heating,
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a more stable indoor temperature
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consistent comfort even during prolonged cold spells.
Energy efficiency and controlled consumption
The system boasts high performance ratings for its multi-zone category, with SEER2 and HSPF2 values that meet modern North American standards. In real-world situations, this translates to optimized energy consumption , especially when properly sized and installed.
We always emphasize this point: a poorly sized or configured multi-zone system can waste energy unnecessarily. At AirGreen, every project begins with a precise analysis of the thermal loads, room by room.
R-454B refrigerant: safety and environmental compliance
The choice of R-454B is not insignificant. This new-generation refrigerant offers:
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a reduced global warming potential compared to previous generations,
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integrated leak detection systems,
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safety mechanisms that automatically stop the compressor in case of a malfunction.
These devices contribute to an increased level of security, particularly important in densely occupied housing, such as condos or multi-unit dwellings.
Key technical data for the 48,000 BTU model
For owners and managers who want to go beyond the sales pitch, here are some concrete elements that we systematically analyze:
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Cooling capacity : 48,000 BTU
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Nominal heating capacity : 48,000 BTU
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Capacity maintained at low temperatures : approximately 36,000 BTU at -15°C depending on the configuration
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Voltage : 208-230 V single phase
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MOP (maximum protection) : 45 A
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Outdoor noise level : approximately 65 dB(A)
These characteristics allow us to anticipate electrical needs, the choice of circuit breaker and the optimal location of the outdoor unit, points that we always validate before installation.
Real-life case: AirGreen installation in Longueuil
We recently installed an ELIOS E-MULTI 3-head heat pump in a house in Longueuil-East occupied by a family of five. The initial problem was clear:
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Upstairs rooms are too cold in winter.
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overheated living room
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two old, noisy and inefficient wall units.
The chosen solution:
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removal of old systems
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Installation of a single ELIOS outdoor unit,
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three indoor units adapted to each space.
Result observed after the first full winter:
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uniform temperature
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a significant decrease in electricity consumption
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disappearance of noise-related complaints.
This type of feedback from the field directly influences our recommendations.
Common mistakes to avoid with a multi-zone system
With experience, we have observed several common mistakes made by landlords:
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unnecessarily oversizing the compressor,
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mixing incompatible indoor units,
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neglecting the balancing of pipe lengths,
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install without prior thermal study.
These errors negatively impact system performance and longevity. That's why we prioritize a methodical and documented approach for every multi-zone project.
Guarantee and peace of mind
The ELIOS E-MULTI heat pump is covered by a standard warranty:
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10 years on the compressor ,
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10-year warranty on parts ,
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labor according to the terms of the contract , with options available.
At AirGreen, we always clearly explain the differences between manufacturer's warranty and installation warranty, in order to avoid any confusion after commissioning.
Why choose AirGreen for your ELIOS heat pump in Longueuil?
Our added value is not limited to the product:
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Local HVAC expertise in Longueuil , Montreal , Laval , South Shore and North Shore ,
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certified and experienced teams,
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technical analyses prior to installation
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structured after-sales follow-up,
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control of LogisVert subsidies , including those applicable to this model.
We have seen too many poorly executed projects to improvise with a multi-zone system of this scale.
Conclusion: a coherent multi-zone solution, provided it is properly installed
The ELIOS E-MULTI 3-head + 48,000 BTU heat pump is a solid solution for buildings requiring multiple comfort zones without the need for numerous outdoor units. Its winter heating performance, flexible configuration, and use of R-454B refrigerant make it a relevant choice for Quebec's climate.
However, like any advanced HVAC system, its full potential depends directly on the quality of the analysis, installation, and follow-up.
Are you considering a multi-zone heat pump in Longueuil?
Contact AirGreen for a comprehensive assessment , a clear quote , and recommendations tailored to your building . We support you every step of the way, from initial analysis to final commissioning.
AirGreen Heat Pumps, Air Conditioning & Heating – your HVAC reference in Longueuil and throughout 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: 36,800 BTU/h at −8 °C, 36,000 at −15 °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 41 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?
$4,416 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 3799033. 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, 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.