Bosch, Fujitsu or Gree? What Our Field Tests Reveal About Multi-Zone Heat Pumps

An In-Depth Analysis of Our Real Multi-Zone Heat Pump Installations in Montréal, Laval and Surrounding Areas

When it comes to choosing a multi-zone heat pump for a residential or commercial property, there are countless options. But beyond spec sheets, it’s the real-life results, how the units perform once installed, and what our clients have to say that truly make the difference. At AirGreen, we’ve completed dozens of multi-zone installations across Montréal, Laval, Longueuil, the North Shore and the South Shore, using the three most in-demand brands: Bosch, Fujitsu and Gree. Here’s what our field experience reveals.

Why Choose a Multi-Zone Heat Pump?

A multi-zone heat pump powers multiple indoor heads using just one outdoor unit. It’s the ideal solution for:

• Multi-storey homes,

• Multi-generational households,

• Small commercial spaces or offices divided into zones,

• Properties with rooms that require different comfort levels.

But not all multi-zone systems are created equal. We’ve tested and installed some of the most advanced models from Bosch, Fujitsu, and Gree, and the results speak for themselves.

Bosch BOVA Multi-Zone: Efficiency, Reliability, and Silence

Key Technical Specifications

• Model Reviewed: Bosch BOVA36HDN1M20G

• BTU Capacity: up to 36,000 BTU

• SEER: up to 22

• Zoning: up to 5 zones

• Refrigerant: R-410A

Field Feedback – Installation in a Town of Mount Royal Home

At a client’s property in Town of Mount Royal, we installed a Bosch multi-zone system for a 3,200 sq.ft. house. The challenges included:

• Cathedral ceilings complicating the layout,

• Limited internal space for ducted units.

AirGreen’s solution: We installed two wall-mounted units upstairs and two low-wall units on the main floor. The result: remarkably even comfort, exceptionally quiet operation, and complete customer satisfaction. The system is eligible for Hydro-Québec’s LogisVert grant, up to $5,000 in financial assistance.

Fujitsu AOU Multi-Zone KX Series: Power and Flexibility

Technical Breakdown

• Model Studied: AOU36RLXFZH

• BTU: up to 42,000 BTU

• SEER: up to 21.5

• Zoning: 2 to 5 zones

• Refrigerant: R-32 (next generation)

Case Study: Installation in Sainte-Julie, South Shore

A triplex needed a discreet, energy-efficient and high-performing solution. The Fujitsu KX was chosen for its ability to heat efficiently down to -26°C.

Project challenges:

• Heating spread across 3 separate units,

• Preserving the building’s exterior aesthetics.

Our technical choices: We installed floor consoles in bedrooms and high-wall units in living rooms. The outdoor unit was discreetly placed on a concrete slab with soundproofing.

Outcome: The client saw a 40% drop in their Hydro bill, and improved comfort during a harsh winter.

Gree Multi21+: Solid Performance at a Competitive Price

Quick Tech Sheet

• Common Model: Gree Multi21+ Quad Zone

• BTU: up to 36,000 BTU

• SEER: 21

• Zoning: 2 to 4 zones

• Refrigerant: R-32

Installation in Laval – Single-Family Home

In Laval, a family needed a reliable yet affordable solution for four rooms: three bedrooms and one living room.

Constraints:

• Avoiding invasive wall work,

• Tight budget.

AirGreen proposed the Gree Multi21+, a solution offering excellent value. With a two-day installation timeline, units were strategically placed to maximize airflow without compromising style.

Result: Reduced power usage and very positive feedback on the system’s fast heating response in winter.

Bosch, Fujitsu or Gree? Our Practical Observations

Available Grants for Multi-Zone Heat Pumps

All the models listed can be eligible for Hydro-Québec’s LogisVert financial assistance, with amounts up to:

• $2,172 for a 2-zone system

• $5,000 for a 4 to 5-zone system

We guide every client through the application and grant process.

Expert Tips for Choosing Your Multi-Zone Heat Pump

1. Evaluate the real needs of each room

It’s crucial to assess the air volume to be heated or cooled per zone.

2. Prioritize winter performance

In Montréal and the North Shore, winters are harsh. Make sure your system is rated to heat down to -25°C or lower.

3. Trust a certified contractor for installation

A poorly calibrated installation can reduce system efficiency by up to 30%. At AirGreen, we provide custom thermal load calculations and guarantee optimized energy performance.

Why Trust AirGreen?

• Regional expertise: We serve Montréal, Laval, Longueuil, the South Shore and North Shore.

• Certified technicians: All our installers are trained and certified for Bosch, Fujitsu, and Gree.

• Personalized follow-up: From free estimates to annual maintenance, we stand by our clients.

• Satisfaction guarantee: Every project undergoes a thorough post-installation inspection.

Conclusion

At AirGreen, we don’t just sell heat pumps. We build tailor-made HVAC solutions, perfectly adapted to each property’s reality. Our hands-on experience with Bosch, Fujitsu, and Gree models allows us to provide honest, informed recommendations, always focused on performance and long-term efficiency.