A Strategic HVAC Installation to Maximize Year-Round Comfort in a Châteauguay Home
At AirGreen, every HVAC installation project is an opportunity to optimize a residence's comfort, energy performance, and durability. In Châteauguay, on the South Shore of Montreal, we recently completed the full installation of a MIDEA EVOX G3 central heat pump | 1.5 tons (18,000 BTU) in a brick-built single-family home, typical of the area.
This project presented several technical specificities, including the existing duct system configuration, mechanical space management, and performance optimization in a demanding Quebec climate. Here is a detailed overview of this installation, the challenges encountered, and the solutions we implemented.
Why the MIDEA EVOX G3 central heat pump was the right choice
Performance adapted to South Shore winters
The MIDEA EVOX G3 central heat pump is distinguished by its ability to maintain stable performance down to -30 °C, making it a perfectly suited choice for the climatic conditions of Châteauguay, Longueuil, and Montreal.
In this project, the client was looking for:
- A reliable primary heating system
- Significant reduction in energy costs
- Uniform comfort in all rooms
- A subsidy-eligible solution
The EVOX G3 met these requirements thanks to:
- Heating capacity: 18,000 BTU
- SEER2: 19.0 (excellent cooling efficiency)
- HSPF2: 10.1 (heating performance)
- R-454B refrigerant gas: more ecological
- ENERGY STAR® (Cold Climate) certification
LogisVert Subsidy: A Concrete Advantage
The client will benefit from a $1764 subsidy through the LogisVert program, making this installation even more financially advantageous.
Site Analysis and Installation Preparation
Exterior configuration: concrete foundation wall and brick cladding
The outdoor unit was installed on a concrete foundation wall, under a brick facade. This configuration required:
- Solid fastening with anti-vibration wall brackets
- Particular attention to alignment to ensure good drainage
- Clean aesthetic integration, without compromising the existing structure
We strategically positioned the unit to:
- Minimize perceived indoor noise
- Facilitate future maintenance
- Optimize airflow around the compressor
Management of refrigerant and electrical lines
In this project, the refrigerant lines (3/8 – 3/4) were carefully installed following a discreet path along the exterior wall. We used:
- Robust mechanical protections
- Optimized routing to reduce thermal losses
- High-quality insulation to prevent condensation
The 220V electrical supply was neatly connected with an accessible, standards-compliant disconnect box.
Challenges Encountered and AirGreen Solutions
1. Limited access and aesthetic constraints
The client wanted a discreet installation that wouldn't compromise the exterior appearance of the house. The challenge was to integrate the outdoor unit without disrupting the facade's aesthetics.
Solution:
- Precise positioning below the window line
- Use of compact wall brackets
- Perfect alignment of conduits and cables
2. Optimization of the existing central system
The existing duct system required complete validation:
- Static pressure verification
- Leak inspection
- Airflow adjustment
Result:
We were able to retain the duct network by perfectly adapting it to the new central heat pump, which reduced costs for the client while ensuring optimal performance.
3. Drainage Management and Durability
Inadequate drainage can lead to long-term problems.
Our approach:
- Installation of a reliable drainage system
- Full testing to prevent any water accumulation
- Verification of winter clearance (snow and ice)
AirGreen Installation Process: Precision and Rigor
Every central heat pump installation in Montreal, Laval, Longueuil, or on the South Shore follows a strict protocol:
Key steps:
- Complete initial inspection
- Precise system sizing
- Mechanical installation (indoor and outdoor)
- Secure electrical connection
- Vacuum pull (micron test)
- Pressure test
- Commissioning and calibration
- Final validation with the client
In this project, the vacuum pull confirmed perfect sealing, guaranteeing maximum system longevity.
Final Result: Comfort, Efficiency, and Peace of Mind
After the installation, the client immediately noticed:
- A stable and uniform temperature
- A notable reduction in noise compared to the old system
- Better energy consumption management
The MIDEA EVOX G3 also offers intelligent control via WiFi, allowing the client to manage their comfort remotely.
Practical advice for homeowners in Châteauguay and the surrounding areas
Choosing an appropriate central heat pump
Here are some essential elements to consider:
- Actual capacity (BTU) adapted to the house
- Heating performance at low temperatures
- Compatibility with existing ducts
- Eligibility for subsidies
Common mistakes to avoid
- Undersizing or oversizing the equipment
- Neglecting the condition of the ducts
- Choosing an installer without central HVAC expertise
- Ignoring the quality of the installation (more important than the machine itself)
Why Trust AirGreen for Your HVAC Installation
At AirGreen, we stand out for:
- In-depth expertise in central heat pumps
- Clean, durable, and compliant installations
- Total transparency in our recommendations
- Precise knowledge of the Montreal, Laval, Longueuil, North Shore, and South Shore markets
Every project is handled with rigor, no matter its complexity.
A High-Performance Central Solution for South Shore Homes
The MIDEA EVOX G3 central heat pump installed in Châteauguay represents an excellent balance between performance, energy efficiency, and financial accessibility.
For homeowners seeking a reliable solution to face Quebec winters while optimizing their year-round comfort, this type of installation is a particularly relevant option.