Ameristar 5-Zone Wall Heat Pump | 42,000 BTU Compressor | Installation in Montreal, Laval, Longueuil, South Shore & North Shore
The Ameristar 42 000 multi-zone heat pump heats and cools 5 rooms with a single outdoor unit. it delivers 35,600 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $4,272 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
5 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 8,870 to 38,200 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 77 % 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
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.
Ameristar Wall-Mounted 5-Zone Heat Pump | 42,000 BTU Compressor | Installation in Montreal, Laval, Longueuil, South Shore & North Shore
An Unmatched Comfort Solution for Your Home
When it comes to maintaining optimal comfort in your home throughout the year, the Ameristar Wall-Mounted 5-Zone Heat Pump stands out as a state-of-the-art solution. Designed to meet the diverse climatic demands of Montreal, Laval, Longueuil, as well as the South Shore and North Shore regions, this heat pump is synonymous with performance, energy savings, and customized comfort.
Technical Features
The Ameristar Wall-Mounted 5-Zone Heat Pump distinguishes itself with exceptional capabilities, offering a cooling capacity of 42,000 BTU and an effective heating capacity down to -30°C, thus ensuring unparalleled comfort in every corner of your home, regardless of weather whims.
Intelligent Zoning
With the ability to manage up to 5 independent zones, this heat pump allows for complete temperature customization in different rooms, precisely meeting the needs of each family member. The specific dimensions and serial numbers of its external and internal components attest to its sophistication and its ability to seamlessly integrate into any interior.
Energy Efficiency and Subsidies
Certified Energy Star®, the Ameristar Heat Pump excels in terms of energy efficiency with a 21.0 SEER performance, significantly reducing your annual energy costs. Furthermore, it is eligible for federal and provincial subsidies, thus offering substantial savings on the purchase.
Comfort and Connectivity
Equipped with options such as WiFi (optional) for remote management via your smartphone, and the I-Feel remote for precise temperature adjustment, this heat pump offers unprecedented comfort and ease of use. The variable speed compressor ensures even distribution of heat or cool air, while the reduced sound pressure level and R-410A gas reflect its environmental respect and quiet operation.
Professional Installation and Warranty
AirGreen, your trusted partner in Montreal and surrounding areas, specializes in the professional installation of the Ameristar Wall-Mounted 5-Zone Heat Pump. Our certified technicians guarantee a quick, efficient, and standard-compliant installation, giving you total peace of mind. Enjoy an exceptional 10-year warranty on all parts and explore the option of an additional warranty for complete coverage.
Why Choose AirGreen?
At AirGreen, we are committed to providing our clients with top-tier heating and cooling solutions. Our expertise and dedication to customer satisfaction allow us to offer you a personalized and high-quality experience. The Ameristar Wall-Mounted 5-Zone Heat Pump is our flagship product, reflecting our commitment to innovation, sustainability, and the comfort of our clients.
Conclusion
Choosing the Ameristar Wall-Mounted 5-Zone Heat Pump means opting for a powerful, economical, and eco-friendly heating and cooling solution. AirGreen is proud to accompany you on this journey towards unprecedented home comfort, ensuring impeccable service and professional installation. Contact us today to transform your home into a sanctuary, suitable for every season.
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: 35,600 BTU/h at −8 °C, 32,400 at −15 °C.
How many heads can I connect?
Up to 5 on this outdoor unit. This product is configured for 5 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 12 combinations, from 9+9+9+9+9 to 12 + 12 + 12 + 12 + 12 (in thousands of BTU). Each head is sized for its room.
How much is the LogisVert grant?
$4,272 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 2415513. 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.
Is it noisy?
Indoors, the reference head goes down to 29 dB(A). 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.