Installation d’une thermopompe FUJITSU ASU12RLS3 Mini Split à Saint-Laurent
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Installation of a FUJITSU ASU12RLS3 Mini Split Heat Pump in Saint-Laurent

A Strategic Installation Above a Window: Maximizing Space and Performance

At AirGreen, every HVAC installation is unique and meticulously designed to perfectly adapt to the building's specific requirements. This project, completed in Saint-Laurent, in a residential condo, perfectly illustrates our ability to transform an architectural constraint into a technical advantage.

The client wanted to install a high-performance FUJITSU wall-mounted heat pump in a room where wall space was limited, particularly due to the presence of a central window with a wooden frame. After a thorough analysis, we recommended an installation above the window — a solution often underestimated, but extremely effective when properly executed.


Why Choose a FUJITSU ASU12RLS3 Heat Pump?

Performance Adapted to Quebec's Climate

The FUJITSU ASU12RLS3 (12,000 BTU) is a wall-mounted heat pump renowned for its reliability and energy efficiency in the harsh climate conditions of Montreal and the North Shore. It offers:

  • Efficient heating down to approximately -26°C
  • Inverter technology for intelligent power modulation
  • Quiet operation (ideal for bedrooms and living spaces)
  • Excellent energy efficiency (high SEER, reducing consumption)

A Smart Choice for a Condo in Saint-Laurent

For this project, the client was looking for a solution capable of:

  • Maintaining a stable temperature in an open-concept area
  • Offering optimal comfort in both summer and winter
  • Reducing energy costs
  • Integrating visually without compromising interior aesthetics

The FUJITSU heat pump perfectly met these requirements.


Technical Challenge: Installation Above a Window

Constraints Encountered

The project image clearly shows a specific configuration:

  • Main wall occupied by a centered window with wooden trim
  • Limited wall space on the sides
  • Ceiling with exposed beam further reducing available height

This type of configuration is very common in Montreal, Laval, and Longueuil, especially in renovated buildings or condos with architectural character.

Our Custom Solution

We opted for a wall-mounted installation directly above the window, adhering to several essential criteria:

1. Optimal Clearance for Air Circulation

We positioned the indoor unit high enough to ensure good air diffusion, without obstruction from the window frame.

2. Precise Aesthetic Alignment

The FUJITSU unit was installed perfectly centered, respecting the visual lines of the wall and wooden trim, for harmonious integration.

3. Vibration and Noise Management

Reinforced supports were used to eliminate any potential vibration, which is especially important in this type of installation where the structure can amplify resonances.

4. Discreet Refrigerant Line Passage

The refrigerant lines and cables were concealed cleanly and professionally, minimizing visual impact indoors.


Key Steps of the HVAC Installation

Here's how our team proceeded to ensure a flawless installation:

Pre-installation Analysis

  • Wall inspection and structural validation
  • Electrical constraint verification
  • Evaluation of optimal location for the outdoor unit

Indoor Unit Installation

  • Solid wall mounting above the window
  • Precise leveling to prevent any drainage issues
  • Verification of necessary clearances

Outdoor Unit Installation

  • Strategic positioning to reduce noise
  • Installation on a stable support (wall or ground depending on configuration)

Connection and Commissioning

  • Connection of refrigerant lines (1/4 - 3/8)
  • Complete vacuum pull with micron test
  • Leak test
  • Startup and calibration

Final Result: Comfort, Efficiency, and Aesthetics

The result of this HVAC installation in Saint-Laurent meets expectations:

  • Uniform air distribution throughout the room
  • No negative impact related to the position above the window
  • Discreet and visually balanced installation
  • Significant reduction in energy costs

The client now benefits from a high-performance, quiet system perfectly suited to their space.


Practical Advice for This Type of Installation

When to Install a Heat Pump Above a Window?

This option is ideal when:

  • Side walls are unavailable
  • The room requires central air distribution
  • Aesthetics are a priority

Mistakes to Avoid

  • Installing too close to the ceiling (limits air circulation)
  • Neglecting clearances around the unit
  • Improperly positioning the drainage, which can cause leaks

At AirGreen, we take all these elements into account to avoid common mistakes and ensure a durable installation.


Subsidies and Available Savings

The FUJITSU ASU12RLS3 heat pump is generally eligible for programs like Hydro-Québec's LogisVert, which allows for:

  • A significant reduction in initial cost
  • Accelerated return on investment
  • Long-term savings on electricity bills

We assist our clients through all steps to maximize these benefits.


Why Choose AirGreen for Your HVAC Installation in Montreal?

Our approach is based on three pillars:

Technical Expertise

Our technicians are perfectly proficient in complex installations, even in atypical configurations like this one.

Transparency

We explain every step and always offer the most suitable solution, without compromise.

Quality of Execution

Each installation is performed with precision, including:

  • Professional vacuum pull
  • Complete performance verification
  • Impeccable aesthetic finish

Conclusion: A Smart and Sustainable Installation

This project in Saint-Laurent demonstrates that a space constraint can become an opportunity when properly utilized. The installation of this FUJITSU Mini Split heat pump above a window offers a solution that is both efficient, elegant, and sustainable.

At AirGreen, we turn every project into a success, no matter the technical challenges.

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