Strategic HVAC Installation to Maximize Year-Round Comfort in Saint-Lambert
In a quiet residential area of Saint-Lambert, our AirGreen team recently completed a full HVAC installation of a MIDEA EVOX G3 1.5-ton (18,000 BTU) Central Heat Pump. This project perfectly illustrates the challenges and opportunities involved in integrating a modern central system into an existing home, while meeting the energy performance standards required in Greater Montreal.
From the first technical visit, several factors guided our approach: building configuration, available mechanical space, condition of the ductwork, and optimal positioning of the outdoor unit. The client was looking for a reliable solution to face harsh winters while improving the home's overall energy efficiency.
Site Analysis and System Choice: Why the MIDEA EVOX G3?
A Central Heat Pump Adapted to the Quebec Climate
The MIDEA EVOX G3 Central Heat Pump stands out as a relevant choice for installations in Montreal, Laval, Longueuil, North Shore, and South Shore, particularly due to:
- Heating capacity down to -30°C
- ENERGY STAR® certified (cold climate)
- Stable performance with a SEER2 of 19.0 and HSPF2 of 10.1
- Use of the more ecological R-454B refrigerant
- Eligible for $1764 LogisVert subsidy
In this Saint-Lambert project, the 1.5-ton sizing was validated after a precise thermal load calculation. The client already had good insulation, which allowed for optimizing capacity without oversizing.
Observed Technical Constraints
During the initial inspection, we identified several critical elements:
- Limited space in the mechanical room
- Limited access for air handler manipulation
- Outdoor positioning requiring a robust wall mount
- Drainage management and frost protection
These constraints were integrated into the planning from the outset to avoid any improvisation during installation.
Installation Process: Precision and Rigor at Every Step
Outdoor Unit Installation
The outdoor unit was installed on a raised wall mount, securely attached to the brick foundation. This approach allows for:
- Avoiding snow accumulation in winter
- Reducing vibrations transmitted to the structure
- Facilitating future maintenance
We also paid particular attention to the alignment and stability of the support, ensuring increased equipment longevity.
Piping and Connections
The system uses 3/8 – 3/4 piping, perfectly suited for this model. We performed:
- A clean and sealed wall penetration
- Complete insulation of refrigerant lines
- External mechanical protection against weather
A vacuum pull with micron test was performed to ensure the complete absence of moisture and contaminants in the circuit.
Indoor Unit (Air Handler) Installation
The MAUSE-H18B-2A air handler was installed in the basement, adapted to the existing ductwork. Thanks to the system's flexibility (multiple configurations), we optimized:
- Airflow in each zone
- Duct balancing
- Aesthetic and functional integration
Commissioning and Calibration
Once the installation was complete, we proceeded with:
- Complete pressure verification
- Thermostat calibration
- Testing in heating and cooling modes
- Configuration of the integrated WiFi
The client can now control their system remotely via the Midea SmartHome app.
Concrete Results: Comfort, Silence, and Savings
Impressive Thermal Performance
From the first few days of use, the client observed:
- Progressive and stable temperature rise
- A noticeable reduction in comfort variations
- Quiet operation, even under high load
With an outdoor sound level of 56.5 dB(A), the unit remains discreet, even when installed near the wall.
Reduced Energy Consumption
Thanks to the system's energy efficiency, the client benefits from:
- Reduced consumption compared to a traditional electric system
- Accelerated return on investment thanks to the subsidy
- Better control of energy costs
Common Mistakes Avoided in This Project
At AirGreen, we often observe errors in similar installations:
- Incorrect heat pump sizing
- Outdoor unit installed too low
- Absence of micron test
- Inadequate pipe insulation
In this project, every step was executed according to best practices, ensuring a reliable long-term system.
Why Choose AirGreen for an HVAC Installation in Saint-Lambert?
Field Expertise and Personalized Approach
Every project is unique. In this installation in Saint-Lambert, our added value lies in:
- In-depth technical analysis
- Rigorous and uncompromising execution
- Complete transparency with the client
Quality and Satisfaction Commitment
We offer:
- Free on-site estimate
- Payment only upon completion, once satisfied
- Full 12-12-10 warranty (compressor, parts, labor)
A Central Solution Designed for Modern Quebec Homes
The MIDEA EVOX G3 Central Heat Pump represents a balanced solution between performance, efficiency, and adaptability. In a demanding climate like Quebec's, it perfectly meets the needs of homeowners looking to modernize their HVAC system.
This project in Saint-Lambert demonstrates that with rigorous planning and professional installation, it is possible to achieve optimal comfort year-round while significantly reducing energy costs.