Multi-Zone Heat Pumps: finally understand this high-performance system thanks to AirGreen’s on-site expertise
At AirGreen, we install HVAC systems throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore, and a large portion of our service calls today involve multi-zone heat pumps. These systems are gaining popularity because they offer a customized comfort solution that is energy-efficient and flexible, both for residential properties and small commercial buildings.
But in practice, we find that our customers always have a series of recurring questions before making the leap. Here are clear, in-depth answers from our experts, based on real field experience in Quebec, to guide you through the process.
1. What is a multi-zone heat pump, and how is it different from a single-zone model?
A multi-zone heat pump is a centralized heating and cooling system that uses a single outdoor unit connected to multiple indoor units (usually wall-mounted, but also available in cassette, ducted, or console form).
Unlike a single-zone system, which connects one outdoor unit to just one indoor unit, the multi-zone setup lets you control several areas or rooms independently, while reducing the outdoor clutter and optimizing energy use.
It’s an ideal solution for multi-story homes, duplexes, or intergenerational houses—exactly the kind of residences we often service in Montréal and its surrounding suburbs.
2. What are the concrete benefits of a multi-zone system for a Quebec home?
Here are the most common advantages reported by our clients in Laval, Brossard, or Boisbriand after installation:
-
Tailored comfort: every room can have its own ideal temperature.
-
Energy savings: heat or cool only where it’s needed.
-
Cleaner exterior look: only one outdoor unit required.
-
Flexible setup: compatible with different types of indoor units.
For example, in Longueuil, we recently installed a Gree Free Match multi-zone heat pump (36,000 BTU model) in a townhouse. The living room and master bedroom received wall units, while the basement was equipped with a floor console – delivering comfort throughout the house without compromise.
3. How many zones can be connected to a single compressor?
That depends on the model and system capacity. Standard configurations usually support two to five indoor units, but some high-capacity systems (like the Fujitsu Airstage V-II) go up to eight zones.
In a recent installation in Repentigny, our client wanted air conditioning for four bedrooms upstairs and the living room. Thanks to a Gree Multizone 48,000 BTU model, we were able to distribute the wall units efficiently without oversizing the outdoor unit.
4. What’s the ideal power capacity for a multi-zone heat pump?
The total BTU capacity depends on several factors: total area to cover, insulation quality, number of zones, and ceiling height. We always perform a precise heat load calculation before making a recommendation.
Generally speaking:
-
A home between 1,000 and 1,400 sq. ft. needs around 24,000 to 36,000 BTU.
-
A home over 2,000 sq. ft. may need 48,000 BTU or more.
In a recent project in Saint-Jérôme, we installed a Bosch BOVA 36k BTU multi-zone heat pump to serve three zones in a well-insulated cottage. Result: stable performance even at -25°C.
5. Can a multi-zone heat pump be used to heat during Quebec winters?
Yes, absolutely, as long as you choose models designed for cold climates. Brands like Gree (Sapphire and Free Match), Fujitsu (KZ Series), Bosch (BOVA) or Mitsubishi Zuba are certified for performance down to -30°C.
At a residence in La Prairie, our team replaced an old central system with a Bosch BOVA 2.0 multi-zone heat pump, allowing the client to fully heat their home even during January’s deep freeze.
6. How long does it take to install a multi-zone system?
It depends on the configuration, number of zones, and access. On average:
-
For 2 to 3 zones: 1 to 2 days.
-
For 4 to 5 zones: 2 to 3 days.
Our team plans every step carefully: installing the indoor units, routing the refrigerant lines, connecting the outdoor unit, setting up the remote controls.
In Laval, a single-family home with 5 rooms was fully equipped in 3 days with a Fujitsu KZAH R-32 multi-zone system, without any damage and with pristine wall finishes.
7. How much does a multi-zone heat pump installation cost?
Prices vary depending on the brand, BTU capacity, number of zones, and complexity of the installation. Here are general price ranges:
-
2 zones: between $7,000 and $9,500.
-
3 to 4 zones: $10,000 to $15,000.
-
5 or more zones: $15,000 and up.
We provide custom estimates, always considering available government grants.
8. Are there any grants for multi-zone heat pumps?
Yes. Several government programs offer incentives, including:
-
Hydro-Québec’s LogisVert: up to $6,500 depending on model and HSPF/SEER performance.
-
Rénoclimat / Chauffez Vert: bonuses for replacing fossil-fuel heating.
-
Municipal grants in certain North Shore and South Shore cities.
We helped a client in Brossard get a $4,000 rebate after installing a Gree Free Match 42,000 BTU multi-zone system with AirGreen.
9. Is there a difference in maintenance between a multi-zone and a single-zone system?
Maintenance is similar, but slightly more involved for multi-zone systems, as multiple indoor units must be cleaned and inspected:
-
Clean indoor unit filters every 2-3 months.
-
Annual inspection of the compressor, connections, and pressure levels.
-
Check unit drainage to prevent water buildup.
We offer a custom HVAC maintenance plan, and we recently performed a full maintenance check on a multi-zone system installed two years earlier in Rosemère. Result: performance still at 100%.
10. Why choose AirGreen for your multi-zone heat pump installation?
Because we have local expertise, technical certifications, and—most importantly—real-world field experience, with hundreds of successful multi-zone installations across Greater Montréal.
-
Accurate on-site assessments.
-
Impeccable installations.
-
Honest, transparent advice.
-
Personalized follow-up and after-sales service.
Whether in Ville Saint-Laurent, Sainte-Julie, or Terrebonne, our clients choose us because they know that at AirGreen, we never compromise on quality or safety.
Practical tips before installing your multi-zone system
-
Have your actual needs assessed by a professional (not just online).
-
Choose models built for cold climates.
-
Ask for a clear, detailed estimate.
-
Ensure regular post-installation follow-up.
Conclusion: Multi-zone heat pumps are the ideal solution for smart, reliable comfort in Quebec
In short, a multi-zone heat pump, when properly selected and professionally installed, offers unmatched efficiency, flexibility, and durability—whether for a family home in Laval or a condo in Montréal.
At AirGreen, we master every step of the process, from the first on-site assessment to ongoing maintenance. Trust our know-how for a reliable, energy-efficient, long-lasting installation.