Strategic under-deck installation for perfectly controlled four-season comfort
In Baie-D’Urfé, our AirGreen team recently carried out a particularly technical HVAC installation of a FUJITSU Aquila XLTH 36,000 BTU dual-zone heat pump. This residential project presented real constraints related to outdoor space, building configuration, and client requirements for thermal comfort and sound discretion. The result: an optimized, durable, and perfectly adapted installation for the Quebec climate.
Why the FUJITSU Aquila XLTH model was the ideal choice
Reliable performance even in extreme cold
In an area like Baie-D’Urfé, where winters can be harsh, choosing a high-performance heat pump is essential. The FUJITSU Aquila XLTH 36,000 BTU model stands out for several reasons:
- Efficient heating down to -26°C, thanks to XLTH (eXtra Low Temperature Heating) technology
- 36,000 BTU cooling capacity, ideal for a multi-zone home
- SEER2 of 22.0 and HSPF2 of 10.0, ensuring significant energy savings
- ENERGY STAR® certified (cold climate), eligible for subsidies
- Use of R-32 refrigerant, more ecological and efficient than R-410A
This system allows the connection of two independent indoor units, ensuring precise temperature management in different zones of the house.
Challenges encountered on the Baie-D’Urfé site
Under-deck installation: a major constraint
The outdoor unit had to be installed under an existing deck, with limited vertical clearance. This type of configuration poses several technical challenges:
- Restricted airflow
- Risk of snow accumulation in winter
- Limited access for future maintenance
- Noise management in a semi-enclosed space
Our AirGreen technical approach
Rather than compromising the system's performance, we applied a series of proven solutions:
Elevation of the outdoor unit
We installed the unit on a sturdy raised aluminum base, allowing for:
- Improved water and ice drainage
- Protection against snow accumulation
- Improved airflow under the unit
Strategic positioning
Despite the presence of a deck support post directly in front of the unit, our team carefully positioned the system to:
- Maintain optimal airflow
- Avoid direct obstruction of the fan
- Reduce vibrations transmitted to the structure
Clearance management
We rigorously adhered to FUJITSU's manufacturer standards for clearance:
- Sufficient distance at the back and sides
- Clear front space for air expulsion
- Provision for future HVAC maintenance access
Technical details of the installation
Dual-zone configuration adapted to real needs
For this residence, we installed a typical configuration:
- One indoor unit for the main living area
- One indoor unit for the upper floor or a sleeping area
This type of system allows for:
- Independent temperature management
- Reduced energy consumption
- Personalized comfort for each occupant
Connection and finishing
Our certified refrigeration technicians performed:
- The complete installation of insulated refrigerant lines
- The discreet routing of conduits behind the structure
- Aesthetic integration with weather-resistant pipe covers
- Electrical connection in compliance with standards (220V)
Every detail was carefully executed to ensure a durable and visually clean installation.
Special attention to durability and maintenance
Protection against elements
Given the under-deck location, we anticipated several factors:
- Installation of a system promoting efficient condensation drainage
- Checking ground slope to prevent water accumulation
- Positioning to limit the impact of debris and leaves
Ease of maintenance
Even in a confined space, we ensured that:
- Access to the unit remains possible for technicians
- Critical components are easily reachable
- Annual cleaning can be performed without complex disassembly
Subsidies and savings for the client
This installation is eligible for Hydro-Québec’s LogisVert program, offering a subsidy of up to $2,928. Thanks to the system’s high energy efficiency, the client will also benefit from:
- Significant reduction in heating costs
- Less reliance on traditional systems
- Rapid return on investment
Why this installation stands out
Perfect adaptation to real constraints
Unlike standard installations, this project demonstrates AirGreen's ability to:
- Work in confined spaces
- Adapt solutions to existing structures
- Maintain a high level of performance despite constraints
Concrete field expertise
This type of installation is common in areas such as Montreal, Laval, Longueuil, North Shore, and South Shore, where homes often have:
- Raised decks
- Limited access to backyards
- High aesthetic requirements
Our field experience allows us to anticipate and effectively resolve these challenges.
Practical advice for homeowners
What to avoid
- Installing a heat pump too close to an obstruction without an airflow study
- Neglecting the height above the ground (risk of ice in winter)
- Ignoring the importance of access for maintenance
What to prioritize
- A raised and stable installation
- Thoughtful positioning, even in a confined space
- Using certified professionals for HVAC installation
Conclusion: an optimized installation for the Quebec climate
This installation in Baie-D’Urfé perfectly illustrates the AirGreen approach: a combination of technical rigor, adaptation to real constraints, and a constant quest for performance. The FUJITSU Aquila XLTH 36,000 BTU dual-zone heat pump now offers this client exceptional comfort, summer and winter, with remarkable energy efficiency.
At AirGreen, we do not offer standardized solutions. Each project is studied, planned, and executed to precisely meet the client's needs and the realities of the field.