A Strategic HVAC Installation to Brave Candiac's Harsh Winters
At AirGreen, we regularly perform complex HVAC installations on the South Shore, but some projects stand out due to their technical precision and specific building constraints. This installation of a MIDEA EVOX G3 central heat pump in Candiac is an excellent example.
The client, owner of a single-family home built in the 2000s, was looking for a solution capable of effectively replacing their old central system, while improving their thermal comfort and reducing their energy consumption. The objective was clear: to achieve stable heating performance down to extreme temperatures, without compromising indoor comfort.
A Thoughtful Choice: Why the MIDEA EVOX G3?
A Central Heat Pump Adapted to the Quebec Climate
The MIDEA EVOX G3 1.5 ton (18,000 BTU) model was selected after a comprehensive analysis of the client's needs and the building's characteristics. This system particularly stands out in the climatic conditions of Montreal, Laval, Longueuil, and the South Shore, thanks notably to:
- Heating capacity down to -30 °C
- Maintains high performance down to -25 °C
- ENERGY STAR® Cold Climate certification
- Uses more ecological R-454B refrigerant
- SEER2: 19.0 | HSPF2: 10.1 | EER2: 12.5
These performances significantly reduce reliance on electric auxiliary systems, an essential point for the region's winters.
An Advantageous Subsidy
Another determining factor was eligibility for the LogisVert grant of $1764, which makes this central heat pump particularly attractive financially.
Technical Challenges Encountered During Installation in Candiac
1. Restricted Outdoor Space
As seen in the project photo, the outdoor unit had to be installed in a relatively confined space, close to the foundation wall and a vertical drain. This type of configuration requires:
- Optimal airflow management
- A minimum distance respected to avoid air recirculation
- Solid mounting with anti-vibration supports
We opted for installation on elevated supports to protect the unit from snow accumulation, a critical element on the South Shore.
2. Integration into the Existing Central System
The indoor system (air handler MAUSE-H18B-2A) had to be integrated into the existing duct network. This implies:
- Complete static pressure verification
- Airflow adjustment to avoid cold or overheated zones
- Optimization of distribution to distant rooms
We also recalibrated the registers to ensure uniform distribution throughout the house.
3. Refrigerant Piping Management
The 3/8 – 3/4 piping was installed with particular attention:
- External mechanical protection
- Reinforced insulation to prevent thermal loss
- Discreet routing to preserve the building's aesthetics
A complete vacuum pull with micron test was performed to guarantee system airtightness.
Key Stages of HVAC Installation
Preparation and Inspection
Before any installation, our team performed:
- Inspection of the existing system
- Electrical validation (220V required)
- Structural analysis for external support
- Duct verification
Outdoor Unit Installation
- Mounting on robust supports
- Precise leveling
- Respect for necessary clearances
- Secure electrical connection
Indoor Installation
- Strategic positioning of the central module
- Connection to the duct network
- Installation of a compatible smart thermostat
Commissioning
- Full system test
- Pressure verification
- Thermostat calibration
- Explanation of WiFi operation to the client
Final Result: Comfort, Efficiency, and Peace of Mind
After startup, the results were immediate:
- Stable temperature throughout the house
- Noticeable noise reduction compared to the old system
- Homogeneous air distribution
- Rapid heating response even in cold conditions
The client particularly appreciated the control via the mobile app, allowing remote temperature adjustment.
Practical Tips for Homeowners in Montreal and on the South Shore
Properly Sizing Your System
A 1.5-ton (18,000 BTU) system is perfect for:
- Well-insulated homes
- Average surface area
- Existing central configuration
Improper sizing can lead to:
- Overconsumption
- Thermal discomfort
- Premature wear
Do Not Neglect Installation
Even the best central heat pump will not perform correctly without rigorous installation. Common mistakes include:
- Poor duct management
- Inadequate outdoor installation
- Incomplete vacuum pull
At AirGreen, every installation is carried out according to strict standards.
Why Choose AirGreen for Your HVAC Installation in Candiac?
Our approach is based on three essential pillars:
Technical Expertise
Our refrigeration technicians are perfectly proficient in modern systems like the MIDEA EVOX G3, including new technologies and eco-friendly refrigerants.
Total Transparency
- Free estimate
- No deposit required
- Payment only at the end, when the client is satisfied
Recognized After-Sales Service
We support our clients long after installation, with HVAC maintenance and fast technical support services throughout Greater Montreal.
A Sustainable Solution for South Shore Homes
This installation in Candiac perfectly illustrates what we aim for at AirGreen: to offer a reliable, high-performing, and locally adapted solution.
The MIDEA EVOX G3 central heat pump now represents an excellent balance between energy efficiency, winter performance, and overall cost, especially with available subsidies.
For homeowners in Montreal, Laval, Longueuil, North Shore, and South Shore, this type of system is a smart long-term investment.