ELIOS E-MULTI 4-Head Heat Pump + 48,000 BTU Compressor | Longueuil
The ELIOS E-Multi 48 000 multi-zone heat pump heats and cools 4 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.
4 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 demanding buildings of the South Shore
In a residential and semi-commercial context where heating and cooling needs vary greatly from room to room, the ELIOS E-MULTI 4-head heat pump with a 48,000 BTU compressor stands out as a structured, reliable HVAC solution perfectly suited to the realities of Longueuil , the South Shore , Montreal , Laval and peripheral areas subject to harsh winters.
At AirGreen , we regularly install this type of multi-zone system in large single-family homes, duplexes, renovated triplexes, as well as in multi-unit buildings where independent comfort management by zone is desired, without multiplying outdoor units.
Understanding the ELIOS E-MULTI logic: a single outdoor unit, multiple controlled zones
The principle of the ELIOS E-MULTI multi-zone heat pump is based on a single central compressor, here with a nominal capacity of 48,000 BTU , capable of simultaneously supplying up to four indoor units , with a technical possibility of going up to six zones depending on the configuration chosen.
Each indoor unit operates independently: temperature, operating mode, airflow, and schedules can be adjusted room by room. This approach is particularly relevant in Longueuil residences where sunlight, occupancy, and room sizes vary significantly between floors, living areas, and bedrooms.
Compatible indoor unit types
One of the major advantages of the ELIOS E-MULTI range is its compatibility with several indoor unit formats:
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Wall-mounted units (6,000 to 24,000 BTU)
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Ducted units for discreet distribution
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4-way cassettes for suspended ceilings
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1-track cassettes
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Consoles
At AirGreen, we often combine several formats in the same project, for example wall units in bedrooms and a cassette or ducted unit in open areas.
Actual performance in Quebec climate
The EXHSA4862AV1 outdoor unit, associated with this system, is designed to operate efficiently down to -25°C , an essential factor for the winters of Montérégie and the South Shore.
Key performance data
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Cooling capacity : 48,000 BTU
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Nominal heating capacity : up to 48,000 BTU
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Available power at -8°C : approximately 34,000 BTU
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Available power at -15°C : approximately 36,000 BTU
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COP at -8 °C : 2.13
These values reflect a real ability to maintain stable comfort without excessive use of supplementary heating sources, which is a crucial point for customers wishing to reduce their dependence on electric baseboard heaters.
Energy efficiency and compliance with standards
The ELIOS E-MULTI 48,000 BTU heat pump is ENERGY STAR® certified, including for cold climates, making it eligible for the LogisVert provincial grant , currently estimated at $4,080 for this model, subject to current conditions.
Seasonal efficiency indices demonstrate a design geared towards energy savings:
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SEER2 (air conditioning): up to 21.3 depending on the configuration
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HSPF2 (heating): up to 8.1
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EER2 : up to 11.7
In practice, this translates into a measurable reduction in annual consumption, particularly in residences where several areas were previously heated uniformly and inefficiently.
R-454B refrigerant: a responsible and future-proof choice
This system uses R-454B refrigerant , a gas with a lower global warming potential than previous generations. For our environmentally conscious clients in Longueuil and Montreal, this choice allows us to reconcile thermal performance with regulatory compliance.
The ELIOS E-MULTI range also incorporates refrigerant leak detection devices, with automatic compressor shutdown and safety ventilation, an often underestimated but essential aspect in modern multi-zone installations.
HVAC installation: AirGreen's expertise makes the difference
Installing a 48,000 BTU multi-zone heat pump involves more than just connecting refrigerant lines. At AirGreen , each project is:
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a complete thermal analysis of the building
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a precise calculation of charges per zone
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from a rigorous selection of indoor units
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careful planning of pipe routes
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of an electrical check (MCA, MOP, 45 A circuit breaker)
In Longueuil, for example, we installed this model in an intergenerational residence where the heating needs of the basement differed significantly from those of the main floor. Poor capacity distribution would have led to discomfort and excessive cycling. The E-MULTI solution, properly configured, ensured consistent thermal stability throughout the entire building.
Acoustic comfort and discreet integration
Despite its power, the outdoor unit has a noise level of approximately 65 dB(A) , which meets the urban requirements of the South Shore. Depending on the model, the indoor units can operate as quietly as 20 dB(A) in quiet mode, a crucial factor for bedrooms and home offices.
Aesthetic integration is also an important criterion: controlled dimensions, clean lines, and installation options adapted to the architectural constraints of Longueuil houses and dense residential areas.
Guarantee and peace of mind
The standard configuration includes a 10-year warranty on the compressor and 10-year warranty on parts (subject to registration), with the option to add an extended labor warranty through AirGreen. This approach helps eliminate unpleasant surprises in the long term, especially for more complex multi-zone systems.
Why choose AirGreen for your project in Longueuil?
Our team works daily in Longueuil , Montreal , Laval , on the North Shore and the South Shore . We are familiar with local constraints: municipal regulations, building types, electrical realities and owners' expectations.
Choosing AirGreen means benefiting from:
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proven multi-zone HVAC expertise
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of compliant, clean and documented facilities
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transparent pricing , no surprises
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clear support for LogisVert subsidies
A coherent solution for demanding multi-zone projects
The ELIOS E-MULTI 4-head + 48,000 BTU heat pump provides a structured solution for differentiated comfort needs, energy efficiency, and long-term reliability. When properly sized and installed, it becomes a true cornerstone of a building's HVAC system.
Take action with AirGreen
Are you considering installing a multi-zone heat pump in Longueuil , on the South Shore , in Montreal or in Laval ? Contact AirGreen for a detailed assessment, a clear proposal and a professional installation.
Call or write to us today to get your personalized quote.
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 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?
$4,416 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.