Installation d’une thermopompe centrale MIDEA EVOX G3 3 tonnes à Saint-Léonard
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Installation of a 3-ton MIDEA EVOX G3 central heat pump in Saint-Léonard

A high-performance central HVAC solution adapted to Saint-Léonard's climate realities

In Saint-Léonard, where seasonal temperature fluctuations are significant, choosing a reliable and efficient central HVAC system is not a mere preference, but a necessity. At AirGreen, we recently completed the installation of a 3-ton MIDEA EVOX G3 central heat pump in a typical single-family home in the area. This project perfectly illustrates our approach: technical precision, adaptation to building constraints, and the pursuit of optimal long-term comfort.

From the initial visit, our team identified a clear need: to replace an old, energy-intensive central system with a modern solution capable of ensuring stable heating even at -30°C, while also providing efficient air conditioning during Montreal's humid summers.


Custom HVAC installation in a complex residential environment

Initial Analysis and Specific Project Challenges

The residence presented several technical constraints:

  • An existing duct network requiring adaptation without complete reconstruction
  • Limited mechanical space in the basement
  • Uneven air distribution in some upstairs rooms
  • An old, inefficient electric furnace

Our goal: integrate the MIDEA EVOX G3 central heat pump without compromising the existing structure, while significantly improving air circulation and overall energy efficiency.

Strategic Choice of the 3-ton MIDEA EVOX G3

The selected model — MIDEA EVOX G3 (MO1SE-H36B-2A / MAUSE-H36B-2A) — was chosen for several key technical reasons:

  • 36,000 BTU (3 tons) capacity perfectly suited to the area
  • SEER2 of 17.7 for efficient air conditioning
  • HSPF2 of 10.0 for optimized heating
  • Reliable operation down to -30°C
  • ENERGY STAR® Cold Climate certification
  • Eco-friendly refrigerant R-454B
  • Controlled outdoor sound level at 62.5 dB(A)

This choice guarantees not only comfort but also a tangible reduction in energy costs.


Complete Installation Process: Rigor and Precision

Preparation and Infrastructure Upgrade

Before installation, our certified refrigeration technicians:

  • Inspected and cleaned existing ducts
  • Verified electrical compatibility (220V required)
  • Adjusted the configuration to optimize airflow
  • Prepared the space to accommodate the vertical indoor unit

Outdoor Unit Installation

The outdoor unit was installed on an elevated base, visible in the project photo. This strategic choice allows for:

  • Better protection against snow accumulation
  • Reduced vibrations
  • Easier accessibility for HVAC maintenance

Indoor Installation and System Configuration

The indoor unit was positioned to:

  • Maximize uniform air distribution
  • Minimize pressure losses in the ducts
  • Allow easy access for maintenance

We also configured:

  • The integrated WiFi control system
  • Airflow via Computational Constant Airflow 2.0 technology
  • Inverter settings for intelligent modulation

Concrete Results After Installation

Significantly Improved Thermal Comfort

From the first days of use, the client observed:

  • Uniform temperature in all rooms
  • Disappearance of cold spots upstairs
  • Smooth transition between heating and cooling

Significant Reduction in Energy Consumption

Thanks to Inverter technology and the system's performance:

  • Noticeable decrease in monthly costs
  • Optimized operation according to actual demand
  • Fewer ON/OFF cycles, thus less wear and tear

Silence and Discretion

The controlled sound level of the MIDEA EVOX G3 contributes to a quieter indoor environment, a particularly appreciated point in this residential area of Saint-Léonard.


Grant and Return on Investment

This project allowed the client to benefit from the LogisVert grant, which can reach $3720 (according to current criteria). This significantly reduces the initial installation cost.

Why this investment is wise

  • Extended lifespan thanks to a 12-12-10 year warranty
  • Reduced energy bills
  • Property value appreciation
  • Compliance with modern energy standards

Common mistakes to avoid during central heat pump installation

At AirGreen, we regularly correct poorly executed installations. Here are the pitfalls to avoid:

  • Undersizing or oversizing the unit
  • Neglecting duct balancing
  • Installing the outdoor unit without an adequate base
  • Omitting vacuuming and pressure tests
  • Ignoring the importance of constant airflow

Every installation must be considered as a whole, not just as a simple equipment replacement.


Why choose AirGreen for your HVAC installation in Montreal, Laval, Longueuil, North Shore and South Shore

Proven Field Expertise

Every year, we carry out dozens of central heat pump installations in various contexts:

  • Single-family homes
  • Duplexes and triplexes
  • Condominiums
  • Complete renovation projects

A Transparent and Professional Approach

  • Free on-site evaluation
  • Detailed quote with no surprises
  • Installation carried out by certified refrigeration technicians
  • Payment only upon client satisfaction

Reliable After-Sales Service

We provide:

  • Annual HVAC maintenance
  • Rapid diagnostics
  • Effective interventions

Case Study: Client Feedback in Saint-Léonard

The owner primarily wanted a stable, quiet, and economical system. After a few weeks of use:

  • He confirms improved indoor air quality
  • He notices a constant temperature without sudden variations
  • He appreciates the mobile app control

This type of feedback validates our approach focused on real performance, not just technical specifications.


Conclusion: A central heat pump adapted to Quebec's requirements

The installation of the 3-ton MIDEA EVOX G3 central heat pump in Saint-Léonard demonstrates that it is possible to combine performance, energy efficiency, and lasting comfort.

At AirGreen, we prioritize solutions adapted to each situation, taking into account the climatic realities of Montreal, Laval, Longueuil, the North Shore, and the South Shore.

A well-chosen and well-installed system truly transforms a home's comfort while reducing long-term costs.

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