Ameristar 4-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 4 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.
4 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 4-Zone Heat Pump
An Unmatched Comfort Solution for Montreal, Laval, and Beyond
The Ameristar wall-mounted 4-zone heat pump epitomizes the pinnacle of home comfort technology, specifically engineered to meet the climatic needs of Montreal, Laval, Longueuil, as well as the North Shore and South Shore regions. With an exceptional cooling capacity of 42,000 BTU and efficient heating performance down to -30°C, this innovative solution ensures optimal comfort all year round.
Advanced Technical Features
The Ameristar quad-zone is not just an ordinary HVAC system; it's a concentration of high technology designed to offer tailored comfort. The following features demonstrate why this heat pump stands out distinctly in the market:
- Optimal Cooling and Heating Capacity: With 42,000 BTU, it perfectly adapts to the climatic variations of our region, ensuring a comfortable interior no matter the season.
- Maximum Flexibility: Capable of serving up to 5 individual zones, it offers unparalleled customization of temperature in different areas of your home.
- Exceptional Energy Efficiency: Certified by Energy Star® and with a SEER rating of 21.0, this heat pump ensures significant savings on your energy bills.
- Attractive Subsidies: Take advantage of federal and provincial subsidies to alleviate the cost of installing this cutting-edge technology system.
- WiFi Option: Control your comfort remotely with an intuitive user interface, available as an option for increased convenience.
- Silent Operation: An external sound pressure level of only 63.0 dB(A) makes this system surprisingly quiet for its power.
Unique Benefits for Residents of Montreal and Surroundings
Choosing the Ameristar Wall-Mounted 4-Zone Heat Pump means selecting a heating and cooling solution tailored to the specific climatic challenges of our region. Here's why it proves to be a wise choice:
- Effective Heating in Extreme Cold: Capable of providing comfortable heat even when the thermometer dips down to -30°C, it guarantees unparalleled peace of mind during the Quebec winter.
- Variable Speed Compressor: This advanced technology allows for precise adjustment of heating and cooling capacity, thus reducing energy consumption and improving overall comfort.
- Advanced Protection: A coil coating specially designed for coastal regions ensures increased durability against corrosion, thereby extending the lifespan of the device.
- I-Feel Remote Control: An innovative remote that adjusts the temperature based on your exact location in the room, ensuring personalized and optimal comfort.
Exceptional Warranty and Support
Ameristar is committed to offering total peace of mind with a comprehensive 10-year warranty on all parts, demonstrating confidence in the durability and performance of their heat pumps. Moreover, the option to opt for an additional 10-10-10 warranty underlines our commitment to your long-term satisfaction.
Professional Installation by AirGreen
At AirGreen, our team of certified experts takes charge of installing your Ameristar Wall-Mounted 4-Zone Heat Pump, ensuring impeccable service and compliance with the strictest standards. Our in-depth knowledge of the local climate allows us to advise you on the best configuration for your home, thus ensuring maximum efficiency and unmatched comfort.
Conclusion: The Ameristar Wall-Mounted 4-Zone Heat Pump presents itself as the ideal solution for those seeking superior energy efficiency, customizable comfort, and unwavering reliability. With AirGreen, benefit from professional installation and exceptional after-sales service. Discover how to transform your home into a comfortable and economical haven today.
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 4 heads.
Can I mix head sizes?
Yes. The “Zones” menu offers 8 combinations, from 9+9+9+9 to 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.