A Complete Transformation of Residential Comfort in the Heart of Mercier–Hochelaga-Maisonneuve
At AirGreen, every HVAC installation is an opportunity to solve concrete challenges while optimizing comfort and energy efficiency. In this project completed in Mercier–Hochelaga-Maisonneuve, we installed a MIDEA EVOX G3 1.5-ton (18,000 BTU) central heat pump in a typical single-family home in the area, with a challenging outdoor configuration and very real space constraints.
From the first visit, our team identified a key issue: the outdoor unit had to be installed in a restricted space, between two brick walls, with already established vegetation and limited air circulation. This type of situation is common in densely built neighborhoods of Montreal, and requires a precise technical approach to ensure the long-term performance of the system.
A Central Heat Pump Designed for Quebec's Climate
Exceptional Performance Down to -30°C
The MIDEA EVOX G3 is specifically designed for Quebec's harsh winters. Unlike many standard systems, it maintains stable heating capacity even when temperatures drop drastically.
Key technical features:
- Heating Capacity: 18,000 BTU down to -30°C
- SEER2: 19.0
- HSPF2: 10.1
- EER2: 12.5
- ENERGY STAR® (cold climate) Certification
- Eco-friendly refrigerant R-454B
- Outdoor sound level: 56.5 dB(A)
This level of performance allows homeowners to reduce their reliance on auxiliary systems while maintaining constant comfort, even during cold snaps in Montreal, Laval, or on the South Shore.
Project Analysis: Constraints and Custom Solutions
Optimized Exterior Wall Installation
In this project, the installation of the outdoor unit represented the main technical challenge. The available space was:
- Narrow (wall corner)
- Partially obstructed by branches
- Located near a metal railing
We opted for an installation on reinforced wall brackets, in order to:
- Avoid ground vibrations
- Protect the unit from snow accumulation
- Maximize air circulation around the condenser
Our refrigeration technicians also adjusted the installation height to ensure optimal hot air exhaust in heating mode, a detail often overlooked but crucial for winter performance.
Piping and Drainage Management
The system requires 3/8 - 3/4 piping, which we carefully integrated along the exterior wall with complete mechanical protection. The challenge here was twofold:
- Maintain a clean and discreet aesthetic
- Ensure perfect insulation against thermal losses
We also installed a secure drainage system, essential to prevent water accumulation and the risk of freezing in winter.
Indoor Installation: Integration into an Existing System
Adaptation to a Typical Residential Configuration
The house was already equipped with a forced-air duct network. We therefore integrated the MIDEA EVOX G3 with a MAUSE-H18B-2A air handler, compatible with existing installations.
The advantages of this approach:
- Reduced installation costs
- Less invasive work
- Optimized airflow in all rooms
Flexible Configuration
The indoor unit allows several configurations:
- Upflow
- Downflow
- Horizontal left/right
In this specific case, we opted for an upflow configuration, ideal for uniform air distribution on the upper floors.
Concrete Energy Efficiency for the Client
LogisVert Subsidy: $1764
This project is eligible for a $1764 subsidy, which represents a significant financial advantage for the client.
At AirGreen, we systematically assist our clients with:
- Eligibility verification
- Document preparation
- Submission of the application
Reduced Energy Consumption
Thanks to its high efficiency, the central heat pump allows for:
- A significant reduction in heating costs
- Better management of air conditioning in summer
- Consistent thermal stability
Technical Details of the Installation
Complete Specifications
- Outdoor model: MO1HE-H18B-2A
- Indoor model: MAUSE-H18B-2A
- Voltage: 220V
- WiFi: Included
- Outdoor dimensions: 35 x 13.5 x 26.5 inches
- Indoor sound level: 37 / 42.5 dB(A)
Exceptional Warranty
- Compressor: 12 years
- Parts: 12 years
- Labor: 10 years
This comprehensive coverage reflects the system's reliability and our commitment to customer satisfaction.
Common Errors Avoided in This Project
Over the years, we have identified several common errors in similar HVAC installations:
- Installing the outdoor unit too close to a wall (poor ventilation)
- Neglecting duct insulation
- Undersizing the system's capacity
- Ignoring drainage management in winter
In this project, each of these errors was carefully avoided through rigorous planning and precise execution.
Why Choose AirGreen for Your HVAC Installation in Montreal
An Approach Based on Field Expertise
At AirGreen, we don't just install systems. We analyze each situation to offer a truly adapted solution.
Our commitments:
- Free on-site estimate
- No payment until complete satisfaction
- Certified and experienced refrigeration technicians
- Fast and efficient after-sales service
A Strong Local Presence
We operate daily in:
- Montreal
- Laval
- Longueuil
- North Shore
- South Shore
This proximity allows us to understand the specific realities of each neighborhood, as here in Mercier–Hochelaga-Maisonneuve.
Final Result: Durable and Smart Comfort
At the end of the installation, the client benefits from:
- A quiet and efficient system
- Smart control via WiFi
- Stable temperature throughout the house
- Significant energy savings
This project perfectly illustrates how a MIDEA EVOX G3 central heat pump can transform the comfort of a Montreal home, even under complex installation conditions.
At AirGreen, every detail counts — and that's what makes the difference.