Choosing the right multizone heat pump to handle Québec’s harsh winters is a critical decision—both for your home comfort and the energy efficiency of your HVAC system. At AirGreen, we’ve installed and tested dozens of multizone heat pump systems across Montréal, Laval, Longueuil, the North Shore, and the South Shore, giving us a unique perspective to compare two industry heavyweights: LG and Fujitsu. These two manufacturers compete for the title of the best-performing heat pump in cold climates. Here’s our in-depth analysis.
Why compare LG and Fujitsu in Québec’s climate?
The extreme temperatures we experience in Québec, especially in January and February, put HVAC systems to the test. A multizone heat pump must not only operate efficiently at -25°C or even -30°C, but also maintain consistent performance across all zones connected to the outdoor unit.
LG, with its Multi F series and more recently the Art Cool Mirror, and Fujitsu, with its Airstage Multi-Zone or KETA models, rely on advanced technology to meet these demands. But which of these two giants delivers the best cold-weather resistance, most reliable durability, and most balanced comfort across multiple areas of a home or building?
Technical Comparison: LG MultiZone vs Fujitsu MultiZone
Energy Efficiency and Cold-Weather Performance
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LG: Several LG models operate down to -25°C with good performance. Some newer units reach up to SEER 21 and HSPF around 10, which is solid.
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Fujitsu: Fujitsu’s multizone heat pumps—especially the AOU36RLXFZH—are rated to maintain performance down to -26°C, and in some cases even -30°C. Their SEER can go up to 22.5 with HSPF above 11, putting them at the top of the market.
Conclusion: Fujitsu stands out with superior cold-climate performance. In Laval and the North Shore, where nighttime temperatures often drop to -28°C, that edge can make a big difference.
Multizone Compatibility and Individual Control
Both brands offer multizone solutions with up to 4 or 5 indoor units (even more for certain commercial setups).
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LG: User-friendly interface, Wi-Fi compatibility with ThinQ, sleek indoor design, but some limitations with the types of compatible indoor units.
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Fujitsu: Exceptional flexibility, advanced remote control options, and more precise zoning capabilities—especially valuable for larger residential buildings.
Conclusion: When it comes to control and flexibility, Fujitsu provides a stronger option for large properties, like duplexes or triplexes commonly found in Montréal.
Real-World Installations by AirGreen
Boisbriand Installation: LG Multi F in a modern triplex
Last January, we installed an LG Multi F heat pump with 3 Art Cool wall units in a modern triplex in Boisbriand. The goal was to ensure even comfort throughout while respecting the building’s architectural integrity. Despite outdoor temperatures of -24°C, the system maintained a stable indoor temperature in all three units.
Saint-Hubert Project: Fujitsu MultiZone with 4 separate zones
In Saint-Hubert, on the South Shore, a homeowner hired us to replace their aging central system with a Fujitsu multizone 36,000 BTU heat pump, serving four separate zones: the living room, kitchen, basement, and master bedroom. The result: a 28% reduction in winter energy bills and unmatched comfort—even during a cold snap at -30°C.
Eligibility for Grants (LogisVert – Hydro-Québec)
Good news: both brands are eligible for grants through Hydro-Québec, particularly the LogisVert program.
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LG MultiZone: Eligible for up to $1,860 in grants, depending on system capacity.
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Fujitsu MultiZone: Eligible for up to $2,200, especially models certified for extreme cold.
Important: These grants vary based on your home’s configuration, the heat pump’s capacity, and the number of zones. At AirGreen, we handle all the administrative paperwork, making the process much easier for our clients.
Durability, Reliability, and After-Sales Service
An often-overlooked factor is the quality of the components and the level of technical support.
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LG: Well-known Korean brand, but some specific parts may take longer to replace in Québec.
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Fujitsu: Parts are readily available, Canadian-based service center, and excellent warranty support.
AirGreen Recommendations: Who Should Choose LG? Who Should Choose Fujitsu?
| Criteria | LG | Fujitsu |
|---|---|---|
| Indoor design | Sleek Art Cool styling | More traditional |
| Performance at -30°C | Good | Excellent |
| Multizone flexibility | Good (3-4 zones) | Excellent (4-6 zones) |
| Grant eligibility | Up to $1,860 | Up to $2,200 |
| After-sales support | Good | Superior |
Recommendation:
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For modern city apartments or well-insulated homes in Longueuil or Montréal, LG is a solid choice.
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For larger residences, colder regions, or projects requiring precise zoning, Fujitsu is the winning solution.
AirGreen’s Multizone HVAC Expertise
At AirGreen, we’ve installed hundreds of LG and Fujitsu multizone systems across Greater Montréal. We are certified installers for both brands, and our hands-on experience allows us to recommend the most suitable solution for your home and lifestyle.
We consider:
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The insulation level of your home
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The number of zones to heat and cool
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Your energy budget
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The grants available based on your region
Practical Tips for Choosing the Right Multizone Heat Pump
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Don’t oversize your system: Bigger isn’t always better.
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Choose a certified installer: Installation mistakes kill efficiency.
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Prioritize a heat pump guaranteed to work down to -30°C if you're on the North Shore.
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Always request a personalized quote with load calculations, which we always provide at AirGreen.
Conclusion
The battle between LG and Fujitsu for the best multizone heat pump capable of handling Québec’s winters is close, but based on our field experience, Fujitsu comes out on top—especially for its performance in very cold weather, zoning flexibility, and after-sales service quality.
That said, every home is unique, which is why a free in-home assessment by an AirGreen expert is essential to make the right choice.