A Powerful Central Solution Designed for the Demanding Winters of the South Shore
At AirGreen, we recently completed a full HVAC installation of a MIDEA EVOX G3 3-ton central heat pump in a single-family residence located on the South Shore of Montreal. This project perfectly illustrates the real challenges encountered in Quebec homes and the concrete solutions we implement to ensure comfort, energy efficiency, and durability.
From the first visit, our client wanted to replace an old, noisy, and energy-intensive central system. The objective was clear: to obtain a reliable heating and air conditioning solution capable of maintaining a stable temperature even during periods of extreme cold, while significantly reducing energy costs.
Technical Analysis and Strategic Choice of the MIDEA EVOX G3
Why this model stands out on the South Shore
The MIDEA EVOX G3 | 3-ton (36,000 BTU) central heat pump emerged as the optimal choice for several technical reasons:
- Heating capacity down to -30°C
- ENERGY STAR® (Cold Climate) certification
- SEER2: 17.7 | HSPF2: 10.0 | EER2: 12.0
- Eco-friendly R-454B refrigerant
- Advanced Inverter technology
- Integrated WiFi for smart control
In the climatic context of the South Shore, where winter temperatures can drop sharply, this model guarantees stable performance without excessive reliance on auxiliary heating.
Precise Sizing: an often-overlooked element
One of the critical elements of this installation was sizing. Too often, systems are poorly calibrated, causing overconsumption or discomfort.
In this specific case:
- House area: ~2,100 sq ft
- Insulation: renovated standard
- Configuration: existing forced-air system
We validated that a 3-ton capacity was ideal to ensure:
- Uniform air distribution
- Efficient humidity management
- Optimized energy consumption
Challenges Encountered on Site and AirGreen Solutions
Outdoor Installation: Space Constraints and Durability
The image above clearly shows an outdoor wall installation on metal supports. This choice is never trivial.
Problem identified:
- Restricted space near foundations
- Risk of snow accumulation in winter
- Need to protect the unit from ground moisture
Solution implemented:
- Installation on robust raised wall supports
- Precise alignment to reduce vibrations
- Optimal clearance for air circulation
Result: a durable, silent installation perfectly adapted to the climatic conditions of the South Shore of Montreal.
Management of existing ducts
Another major challenge concerned the ducts:
- Presence of existing partially obstructed ducts
- Uneven air distribution in some rooms
AirGreen Intervention:
- Complete network inspection
- Thorough cleaning
- Adjustment of airflow rates using the Computational Constant Airflow 2.0 system
This ensured homogeneous distribution throughout the house, a point often overlooked in standard installations.
Rigorous Installation Process by AirGreen
Every HVAC installation on the South Shore follows a strict methodology:
1. Preparation and planning
- Complete thermal analysis
- Electrical validation (220V required)
- Planning of refrigerant line routing (3/8 – 3/4)
2. Mechanical installation
- Secure fastening of the outdoor unit
- Installation of the indoor unit (MAUSE-H36B-2A air handler)
- Duct connection
3. Critical steps often overlooked elsewhere
- Complete pressure test
- Vacuum pull (micron test) to eliminate all moisture
- Micro-leak verification
These steps ensure the system's longevity, avoiding costly long-term problems.
4. Commissioning
- Inverter system calibration
- WiFi configuration
- Performance test under real conditions
Actual Performance Observed After Installation
A few weeks after commissioning, the results were already visible:
Thermal comfort
- Stable temperature in all rooms
- No noticeable variation between floors
Noise level
- Exterior: discreet despite its 62.5 dB(A)
- Interior: almost imperceptible (31.5 – 49.5 dB(A))
Energy consumption
- Estimated reduction of 20 to 35%
- Smart operation thanks to Inverter technology
LogisVert Subsidy: A Major Financial Advantage
This installation allowed the client to benefit from a LogisVert provincial subsidy of up to $3720.
At AirGreen, we systematically support our clients with:
- Eligibility validation
- Document preparation
- File submission
This type of assistance makes the MIDEA EVOX G3 central heat pump even more accessible for homeowners in Montreal, Laval, Longueuil, North Shore, and South Shore.
Common Mistakes to Avoid During HVAC Installation
1. Choosing a heat pump without thermal analysis
Result: discomfort and overconsumption.
2. Neglecting the condition of the ducts
Even the best machine will not compensate for a faulty network.
3. Ground installation without protection
High risk of winter damage.
4. Omitting vacuum pull
This is one of the main causes of premature failure.
At AirGreen, we systematically avoid these errors through a methodical and professional approach.
Why Trust AirGreen for Your Installation on the South Shore
We distinguish ourselves by:
- Advanced technical expertise in HVAC
- Clean, durable, and compliant installations
- Complete transparency in our quotes
- Prompt and efficient after-sales service
Every project is treated with the same level of demanding standards, whether it's a single-family home or an apartment building.
A Smart Investment for Your Long-Term Comfort
The MIDEA EVOX G3 central heat pump represents a remarkable balance between:
- Cold climate performance
- Energy efficiency
- Constant comfort
- Reduced environmental impact
For homeowners on the South Shore of Montreal, this is a solution perfectly adapted to current climatic and economic realities.
Conclusion
This installation on the South Shore of Montreal clearly demonstrates that a well-chosen and correctly installed system completely transforms the comfort of a home. Thanks to the MIDEA EVOX G3 3-ton central heat pump, our client now benefits from a stable, quiet, and economical indoor environment.
At AirGreen, we continue to offer high-end HVAC installations in Montreal, Laval, Longueuil, as well as on the North Shore and South Shore, always emphasizing quality, precision, and lasting satisfaction.