A high-performance HVAC solution designed for the harsh winters of the West Island
At AirGreen, we recently completed a complete HVAC installation in Dollard-des-Ormeaux, in a single-family home that required serious energy modernization. The client was looking for a solution capable of ensuring reliable heating in winter, efficient air conditioning in summer, and above all, tangible reductions in energy costs. Our recommendation naturally led to the MIDEA EVOX G3 3-ton central heat pump, a system known for its robustness and performance in cold climates.
From the first technical visit, several elements caught our attention: an old central system, uneven air distribution between floors, and high energy consumption. The objective was clear: to provide a modern, high-performance, and durable system, perfectly adapted to the climatic conditions of Montreal and the West Shore.
Technical analysis and site preparation
Comprehensive evaluation of the existing system
Before any installation, we conducted a detailed inspection:
- Verification of the condition of existing ducts
- Analysis of heat loss in the building envelope
- Precise calculation of the thermal load
- Inspection of the electrical panel (220V compatibility)
This step is essential to ensure that the central heat pump operates at its full potential. In this specific case, the ducts were in good condition but required thorough cleaning and some adjustments to optimize airflow.
Strategic choice of the MIDEA EVOX G3 model
The choice of the MIDEA EVOX G3 3-ton (36,000 BTU) model was made for several reasons:
- Heating capacity down to -30°C
- ENERGY STAR® (cold climate) certification
- Solid energy efficiency:
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- Eco-friendly refrigerant R-454B
- Inverter technology for intelligent modulation
This model offers an excellent balance between performance, reliability, and energy efficiency, particularly sought after in areas like Laval, Longueuil, the North Shore, and the South Shore.
Installation process in Dollard-des-Ormeaux
Outdoor unit installation
The outdoor unit was installed on robust wall brackets, as shown on the worksite. This type of mounting offers several advantages:
- Protection against snow accumulation
- Reduction of ground vibrations
- Improved equipment durability
We also ensured:
- Compliance with recommended clearances
- Optimized airflow around the unit
- Minimized visual impact on the facade
Refrigerant and electrical connections
The tubing (3/8 - 3/4) was carefully installed and insulated to prevent heat loss. Our refrigeration technicians performed:
- A complete vacuum pull (stable micron test)
- A pressure leak test
- Mechanical protection of lines
On the electrical side:
- Connection to 220V
- Secure installation with dedicated circuit breaker
- Complete verification of connections
Indoor unit installation
The indoor unit (air handler) was installed in the existing technical space. Thanks to its compact design:
- Easy integration into a confined space
- Simplified access for HVAC maintenance
- Compatibility with high-efficiency filters (MERV 13)
We also optimized air distribution to ensure uniform temperature in all rooms.
Challenges encountered and solutions provided
Limited access to the exterior wall
The main challenge on this project was restricted access for wall mounting. Our team used:
- Reinforced adjustable brackets
- Mounting techniques adapted to the structure
- Specialized equipment for precise positioning
Result: a solid, aesthetic, and durable installation.
Airflow optimization
The previous system had pressure imbalances in the ducts. We:
- Adjusted ventilation registers
- Thoroughly cleaned the ducts
- Calibrated the system with Constant Airflow 2.0 technology
This resulted in homogeneous air distribution throughout the house.
Actual performance after installation
Upon commissioning, the results were immediate:
- Uniform heating in all rooms
- Reduced noise compared to the old system
- Rapid system responsiveness thanks to the Inverter
- Better humidity control
The client particularly appreciated:
- Consistent thermal comfort
- Ease of use via integrated WiFi
- Anticipated reduction in energy bills
Concrete advantages of the MIDEA EVOX G3
Year-round comfort
The MIDEA EVOX G3 central heat pump ensures:
- Efficient heating even in extreme cold
- Stable air conditioning during humid summers
- Constant temperature without fluctuations
Energy efficiency
Thanks to its high efficiency:
- Significant reduction in electricity costs
- Better consumption management
- Accelerated return on investment
Reduced environmental impact
The R-454B refrigerant allows for:
- Reduced global warming potential
- A more environmentally friendly solution
Available subsidies in Dollard-des-Ormeaux
This project is eligible for the LogisVert subsidy, which can reach $3720 (according to current updates). At AirGreen, we assist our clients with all steps:
- Eligibility verification
- Document preparation
- Case follow-up
Practical tips for homeowners
What to avoid
- Undersizing or oversizing the heat pump
- Neglecting the condition of existing ducts
- Choosing a non-certified installer
Recommended best practices
- Conduct a comprehensive evaluation before installation
- Opt for a model adapted to the Quebec climate
- Plan annual HVAC maintenance
Why trust AirGreen for your HVAC installation
Our approach is based on rigorous standards:
- Detailed on-site technical analysis
- Installation carried out by certified refrigeration technicians
- Total cost transparency
- Fast and reliable after-sales service
We operate daily in Montreal, Laval, Longueuil, on the North Shore, and the South Shore, with proven expertise in central systems.
Conclusion: A durable and high-performance installation in Dollard-des-Ormeaux
This MIDEA EVOX G3 central heat pump installation project perfectly demonstrates the importance of a professional approach to HVAC. By combining advanced technology, precise installation, and rigorous analysis, we have enabled this client to benefit from optimal comfort all year round.
For any central heat pump installation in Montreal or its surroundings, our team at AirGreen offers tailored, reliable, and durable solutions, designed for Quebec's climatic realities.