Strategic Wall Installation to Maximize Efficiency in a Confined Space
In a residential area of Montreal's West Island, our AirGreen team recently completed the full installation of a FUJITSU Aquila XLTH R32 24,000 BTU dual-zone heat pump. This project presented several interesting technical challenges, including limited outdoor space, a demanding wall configuration, and constraints related to the building's structure.
The final result: a clean, robust installation, perfectly optimized for Quebec's climate, and most importantly, consistent thermal comfort for the occupants — summer and winter alike.
Specific Technical Challenges Encountered on This Project
Brick Wall Installation with Elevated Support
Unlike standard ground-level installations, this property required a wall-mounted outdoor unit installation. As seen in the project, the FUJITSU unit was securely fastened to robust metal supports directly anchored into the brick.
This approach was chosen for several reasons:
- Avoid snow accumulation in winter
- Free up ground space (narrow passage area)
- Reduce the risk of vibrations transmitted to the structure
- Protect the unit from moisture and debris
However, this type of installation requires absolute precision:
- Perfect alignment of supports
- Secure anchoring into the brick (specialized anchors)
- Calculation of dynamic load (weight + vibrations)
At AirGreen, our certified refrigeration technicians master these techniques to guarantee a durable installation compliant with RBQ standards.
Duct Management in a Compact Environment
One of the major challenges was running the refrigerant and electrical lines in a confined space, between an outdoor staircase and the building's openings.
Therefore, we:
- Optimized the duct routing to reduce energy losses
- Used discreet and durable outdoor protections
- Ensured perfect sealing of wall penetrations
- Minimized visual impact to preserve the building's aesthetics
This type of configuration requires rigorous planning even before work begins.
A FUJITSU Heat Pump Designed for Quebec's Climate
Heating Performance Down to -26°C
The installed FUJITSU Aquila XLTH R32 (AOUH24KWAH3) model offers exceptional performance:
- Effective heating capacity down to -26°C
- Power at -15°C: 25,200 BTU
- INVERTER technology for intelligent modulation
This type of heat pump is perfectly suited for the harsh winters of Greater Montreal, including Laval and the South Shore.
Remarkable Energy Efficiency
Here are the main energy characteristics:
- SEER2: 23.5
- HSPF2: 11.5
- ENERGY STAR® (Cold Climate) certification
Result: a significant reduction in heating and air conditioning costs, with an excellent return on investment.
Use of R-32 Refrigerant
The choice of R-32 gas represents a strategic advantage:
- Less environmental impact (reduced GWP)
- Improved thermal efficiency
- Reduced charge quantity
This is a modern standard in residential HVAC installation in Montreal.
DualZone Configuration Adapted to Real Needs
In this project, the client wanted to air condition and heat two distinct zones:
- Main living room
- Upstairs bedroom
The chosen configuration allows for:
- Independent control of each zone
- Energy savings by avoiding unnecessary heating/cooling
- Personalized comfort for each space
The chosen indoor units (FUJITSU wall-mounted) offer:
- Quiet operation (19 dB at low speed)
- Homogeneous air distribution
- Discreet and modern design
LogisVert Subsidy: A Significant Financial Advantage
This model is eligible for the Hydro-Québec LogisVert subsidy, currently estimated at:
- $1,944 (recent update)
At AirGreen, we systematically support our clients in:
- Eligibility validation
- Document preparation
- File submission
This support greatly simplifies the process for homeowners.
Key Installation Steps Carried Out by AirGreen
1. On-site Technical Evaluation
Before any installation, we performed:
- Thermal analysis of the building
- Verification of electrical capacity (220V, 24A MCA)
- Selection of optimal locations
2. Outdoor Unit Installation
- Fixing to reinforced wall brackets
- Precise leveling
- Installation of the anti-vibration system
3. Duct Routing and Connections
- Installation of refrigerant lines
- Compliant electrical connection
- Leak test and vacuuming
4. Commissioning and Calibration
- Pressure checks
- Heating and air conditioning function test
- Full explanation to the client
Common Mistakes to Avoid (and that we avoided)
Incorrect Outdoor Unit Positioning
A poorly placed unit can:
- Generate noise
- Reduce efficiency
- Accelerate wear
In this project, we chose a central, elevated, and clear location, ideal for performance.
Undersizing or Oversizing
Incorrect sizing leads to:
- Excessive consumption
- Uneven comfort
- Harmful short cycling
We precisely selected a 24,000 BTU capacity adapted to real needs.
Non-Optimized Duct Installation
Poorly installed ducts cause:
- Energy losses
- Leaks
- Long-term problems
Our installation guarantees maximum efficiency and increased durability.
Client Feedback After Installation
The West Island client particularly appreciated:
- The discreet exterior installation
- The quietness of the indoor units
- The speed of execution (installation completed in one day)
Since commissioning, the system has provided constant comfort, even during extreme temperature variations.
Why Choose AirGreen for Your HVAC Installation in Montreal
We operate daily in Montreal, Laval, Longueuil, on the North Shore and the South Shore, with an approach focused on quality and transparency:
- No deposit required
- Certified and experienced technicians
- Clear and detailed quotes
- Fast and professional installation
- Local and responsive after-sales service
Each project is treated as a unique installation, with tailor-made solutions.
A Sustainable and High-Performance Solution for the West Island
This FUJITSU Aquila XLTH DualZone heat pump installation perfectly demonstrates that it is possible to combine:
- Energy performance
- Aesthetics
- Durability
- Personalized comfort
Even in complex configurations like this one, a well-thought-out installation makes all the difference.
Do you have a similar project in Montreal or on the South Shore?
At AirGreen, we specialize in complex and optimized installations. Whether for a house, a condo, or a duplex, we offer HVAC solutions adapted to every situation.