Installation of a MIDEA EVOX G3 2.5-ton central heat pump in Côte-des-Neiges–Notre-Dame-de-Grâce, Montreal: a compact, efficient, and perfectly integrated central HVAC solution
AirGreen installs a MIDEA EVOX G3 2.5 ton central heat pump in Côte-des-Neiges–Notre-Dame-de-Grâce: central comfort, compact installation, and neat HVAC finish.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.
The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.
A shut-off switch near the outdoor unit isolates it safely for service.
Sitting on the indoor module, it moves heat between the house air and the refrigerant.
Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.
Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.
It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.
It runs the heat pump and the backup heat. It must be compatible with the installed system.
A MIDEA EVOX G3 central installation designed for the urban realities of Côte-des-Neiges–Notre-Dame-de-Grâce
In Côte-des-Neiges–Notre-Dame-de-Grâce, in the heart of Montreal, our AirGreen team installed a MIDEA EVOX G3 2.5 ton central heat pump in a residential context where precision, available space, and quality of finish were essential. This project perfectly illustrates the challenges we often encounter in Montreal's urban neighborhoods: restricted side access, visible foundation, exterior siding to preserve, nearby openings, technical clearances to respect, and the need to install a high-performance unit without hindering circulation around the house.
The project photo shows an outdoor MIDEA unit installed on low wall mounts, very close to the foundation, with refrigeration and electrical connections neatly grouped on the side of the unit. The location, against a wall covered with pale horizontal siding, was chosen to maintain discreet integration, while ensuring the necessary space for the operation of the central heat pump. We also note the presence of a nearby basement window and small wall vents above, two elements that influenced our planning.
In an area like Côte-des-Neiges–Notre-Dame-de-Grâce, installing an HVAC system is never just about placing a machine outside. Montreal homes and plexes often impose specific constraints: narrow side margins, uneven surfaces, shared access, proximity to neighbors, low windows, and condominium or borough regulations to consider. At AirGreen, we approach every HVAC installation as a complete project, where system performance depends as much on equipment selection as on the quality of its integration.
Why the MIDEA EVOX G3 2.5 tons was suitable for this Montreal residence
The MIDEA EVOX G3 2.5 tons is a central solution suitable for homeowners seeking a system capable of providing uniform heating and cooling through a duct network. Unlike a wall-mounted heat pump or a wall-mounted air conditioner, which treats a specific area of the house, a central heat pump aims to distribute tempered air to multiple rooms from an indoor system connected to existing or adapted ducts.
In this Côte-des-Neiges–Notre-Dame-de-Grâce residence, the choice of a 2.5 ton capacity met a need for balance. A system robust enough to provide stable comfort during hot Montreal summers was required, but also sized well enough to avoid short cycling, overconsumption, and dehumidification issues. Sizing a central heat pump is one of the most important steps in the project.
Before recommending this type of appliance, we analyze in particular:
- the area to be heated and cooled;
- the quality of insulation;
- the floor configuration;
- potential heat losses;
- sun exposure;
- the condition of the duct network;
- available electrical capacity;
- possible outdoor location;
- the comfort level expected by occupants.
A system that is too small risks running continuously on extreme days. A system that is too large can cool too quickly without properly controlling humidity, which creates a feeling of imperfect comfort. In this project, the MIDEA EVOX G3 2.5 tons offered a consistent solution to the building's needs, while allowing for a clean and accessible outdoor installation.
A compact outdoor installation, with wall mounts and controlled clearance
The image of this realization shows a unit installed close to the ground, but raised thanks to sturdy wall mounts. This configuration allows the unit to be stabilized, protected from direct ground moisture, and to maintain a compact installation in a limited space. The mounts are fixed against the foundation, allowing the unit to remain well-aligned with the building while leaving clearance underneath the unit.
This type of installation is particularly useful in dense Montreal neighborhoods, where available outdoor space must be used intelligently. A ground-level base can sometimes be appropriate, but it requires a flat, stable, well-drained, and sufficiently clear space. In this case, the wall mounts allowed for better integration of the heat pump without unnecessarily encroaching on the passage area or the outdoor landscaping.
We also paid particular attention to the distance between the unit and the siding. An outdoor unit needs to breathe. It must be able to draw in and expel air without excessive obstruction. An installation too close to a wall can reduce system efficiency, increase operating pressure, and harm durability. Our team therefore positioned the unit to meet air circulation needs, while taking into account the physical limitations of the terrain.
Managing connections: a visible detail that speaks volumes about installation quality
On the side of the unit, the refrigeration and electrical connections are visible, protected and grouped in a structured manner. This point is important, as a durable HVAC installation relies heavily on how lines are routed, insulated, and secured.
In this project, the pipes exit the unit with a clean and controlled curve. The visible white insulation protects the refrigeration lines and helps reduce heat loss. Electrical and communication connections are also organized to prevent unnecessary tension, rubbing, or excessive exposure. This type of finish also facilitates future HVAC maintenance, as components remain accessible for inspection or diagnosis.
In urban installations, we often have to deal with foundation walls, low windows, existing ducts, electrical entries, and limited passages. A poorly thought-out path can become a problem after a few seasons. That's why we plan the pipe routing from the start, instead of improvising once the unit is in place.
A location chosen considering the basement window and exterior siding
The basement window visible near the outdoor unit required particular attention. When a heat pump is installed near an opening, several factors must be considered: clearance, window access, air circulation, perceived noise, and safety. The goal was to position the MIDEA EVOX G3 so as not to block access or create unnecessary constraint around the opening.
The exterior siding also represented an element to preserve. In this type of project, a clean installation must avoid unnecessary marks, misplaced drillings, and visible pipes without protection. Even when the equipment is technical, the final result must remain neat. This is particularly important in Côte-des-Neiges–Notre-Dame-de-Grâce, where several residences combine old constraints and recent renovations.
Our approach is to respect the building as much as the installed system. A central heat pump must be efficient, but it must also integrate cleanly with the side facade, the foundation, and existing elements.
Advantages of a central system for a Montreal home
For many Montreal homeowners, a central heat pump is a very attractive option when a duct network is already present or when a central configuration can be adapted. This type of system reduces the presence of visible indoor units, while offering more uniform comfort in different rooms.
The MIDEA EVOX G3 2.5 ton central heat pump installed in this project notably allows for:
- efficient air conditioning during hot and humid periods;
- useful heating during a large part of the cold season;
- more homogeneous air distribution;
- a discreet indoor solution;
- simple use with central thermostat;
- better comfort management in main areas;
- possible integration with an existing duct system.
For homeowners comparing a central heat pump with a wall-mounted heat pump or a wall-mounted air conditioner, the main difference lies in comfort distribution. A wall unit is often excellent for an open-plan area or a specific zone. A central system, on the other hand, aims to treat the entire house more uniformly. The right choice therefore depends on the building's configuration, budget, comfort objectives, and existing equipment.
Typical constraints in Côte-des-Neiges–Notre-Dame-de-Grâce
Côte-des-Neiges–Notre-Dame-de-Grâce is an area where HVAC projects often require more precise planning than in more open residential areas. There are detached houses, duplexes, triplexes, condominium buildings, residences with habitable basements, and sometimes narrow side yards. These realities directly influence the installation of a heat pump.
In this project, the available space around the foundation was usable, but several elements had to be considered: the low window, the exterior siding, the ground level, the line trajectory, and the need to keep the unit accessible. A poor installation could have made maintenance difficult or reduced the unit's performance.
Our teams regularly work in similar contexts in Montreal, but also in Laval, Longueuil, on the North Shore and the South Shore. The experience gained in these different sectors allows us to find adapted solutions when the ideal location is not obvious at first glance.
Subsidies and energy performance: the importance of validating the criteria of the installed model
Homeowners investing in a central heat pump often want to know if their unit may be eligible for financial aid. Subsidy programs can depend on the exact model, capacity, certified performance, AHRI number, current rules, and documents provided after installation.
For a MIDEA EVOX G3, we always recommend checking precise eligibility at the time of the project, as criteria can change. At AirGreen, we help our clients retain the necessary information: detailed invoice, installed model, required proof, technical information, and useful documents for an application, when the system meets the requirements of the applicable program.
This step is often decisive in the final decision. A client doesn't just want to buy a machine; they want to understand the true cost of the project, possible savings, available aid, and the long-term value of their investment.
Mistakes to avoid during a central heat pump installation in an urban environment
An urban installation carries particular risks when the equipment is poorly planned. Here are the most common mistakes we help our clients avoid.
Installing the unit too close to the wall
An outdoor unit needs good clearance. If it's too close to the siding or placed in a corner that's too closed, air circulation can be poor, reducing efficiency.
Blocking a window or access
In Montreal homes, basement windows are often close to mechanical areas. Access, ventilation, and safety must be preserved.
Leaving pipes without sufficient protection
Refrigeration and electrical lines must be well insulated, secured, and protected. A neglected finish can cause problems over time.
Underestimating drainage and humidity
The ground near foundations can accumulate water. The unit must be positioned to avoid the effects of humidity, freezing, and thawing.
Choosing capacity without analysis
A 2.5 ton capacity may be perfect for one residence and inadequate for another. Sizing must consider the building, not just a quick estimate.
Our AirGreen method for reliable HVAC installation
At AirGreen, every installation follows a simple logic: understand the building, choose the appropriate equipment, install cleanly, and prepare the system for long-lasting operation. This project in Côte-des-Neiges–Notre-Dame-de-Grâce clearly demonstrates this method.
We start by analyzing the site. Then, we assess the mechanical, electrical, and exterior constraints. We choose the location that offers the best compromise between performance, accessibility, discretion, and durability. Finally, we install the unit with particular attention to visible and invisible details.
In this achievement, several choices reflect this approach:
- wall mounts adapted to the location;
- compact positioning near the foundation;
- respect for existing elements;
- organized connections;
- line protection;
- maintained access to service panels;
- discreet integration into the exterior siding.
These details may seem technical, but they directly influence the system's lifespan, ease of maintenance, and customer satisfaction.
A MIDEA EVOX G3 achievement combining central comfort, clean installation, and adaptation to Montreal's built environment
The installation of this MIDEA EVOX G3 2.5 ton central heat pump in Côte-des-Neiges–Notre-Dame-de-Grâce, Montreal demonstrates the importance of a precise HVAC approach in an urban environment. Available space was limited, building openings had to be respected, and connections had to be made cleanly to ensure a durable finish.
The result is a compact, well-positioned installation adapted to the building. The MIDEA EVOX G3 offers an efficient central comfort solution, while the quality of installation ensures better reliability over the seasons. For homeowners considering a central heat pump in Montreal or the surrounding areas, this project serves as a reminder that a good system is not just about its technical specifications. It also depends on site analysis, careful installation, and the on-site team's experience.
At AirGreen, we serve Montreal, Laval, Longueuil, the North Shore, and the South Shore with HVAC solutions tailored to the real needs of buildings. This installation in Côte-des-Neiges–Notre-Dame-de-Grâce is a concrete example: a well-chosen machine, thoughtful installation, and a professional finish that prepares the house for stable comfort, season after season.
The unit on this job, in figures
The range as published on airgreen.ca: pick a size to see its capacity in deep cold.
| Size | Heating at −8 °C | Heating at −15 °C | Coldest certified point | COP at −15 °C | SEER | HSPF | Indicative LogisVert aid |
|---|---|---|---|---|---|---|---|
| Midea EVOX G3 · 1.5 tons | 14,700 | 18,600 | −30 °C: 11,800 | 2.12 | 19.0 | 10.1 | $1,764 |
| Midea EVOX G3 · 2 tons | 20,800 | 20,600 | −30 °C: 12,100 | 2.14 | 18.6 | 10.0 | $2,496 |
| Midea EVOX G3 · 2.5 tons | 24,000 | 33,200 | −30 °C: 17,900 | 1.97 | 17.2 | 10.8 | $2,880 |
| Midea EVOX G3 · 3 tons | 33,000 | 37,400 | −30 °C: 27,600 | 1.9 | 18.0 | 10.0 | $3,960 |
| Midea EVOX G3 · 4 tons | 39,500 | 48,000 | −30 °C: 27,200 | 2.0 | 17.5 | 9.5 | $4,740 |
| Midea EVOX G3 · 5 tons | 45,000 | 54,000 | −30 °C: 37,300 | 1.9 | 17.5 | 9.5 | $5,400 |
Data read live from the airgreen.ca page of each size (NEEP / AHRI certified performance). When the title names the installed size, it is highlighted; otherwise the whole range is shown. The aid shown is today’s, using Hydro-Québec’s rule ($120 per 1,000 BTU/h at −8 °C); amounts quoted in the article date from its publication. Only Hydro-Québec confirms the assistance granted.
The big day, step by step
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
The equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
Access protected, old unit disconnected and removed when it is being replaced.
Electric furnace or air handler, with its coil, connected to the supply and return ducts.
On a level base, raised above the snow, with free space all around.
Insulated, they enter through a sealed opening and run to the indoor coil.
Dedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
Leak test, vacuum, start-up, airflow check and a test of both modes.
Filter, thermostat, backup heat in extreme cold: what to know before winter.
- The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
- The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
- Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
- The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
- The outdoor unitOn a level base, raised above the snow, with free space all around.
- The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
- Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
- Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
- The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
What would it look like at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Baseboards and electric furnaces turn 1 kWh of electricity into 1 kWh of heat. A heat pump delivers more: that is its COP. At Hydro-Québec’s rate D (11.142¢/kWh above 40 kWh a day, since 1 April 2026):
Hydro-Québec: a heat pump can be up to three times more efficient than baseboards for heating in the colder months.
Estimate per kWh of heat, at the chosen temperature, using the certified COP from the product page. Taxes, access charge and backup heat not included.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Check the indoor module's filter.
- Clear winter debris from the outdoor unit.
- Test cooling before the heat arrives.
- Check the filter more often in peak season.
- Keep registers and returns clear.
- Watch condensate drainage near the coil.
- Change or clean the filter.
- Test heating and backup heat before the cold.
- Book periodic maintenance.
- Clear snow around the outdoor unit.
- Store nothing in front of the indoor module.
- Note any unusual noise or smell and call us.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. A central heat pump uses the house's ducts.
It connects to the existing ducts to heat and cool everywhere.
2. In extreme cold, electric backup heat can take over.
The indoor module (furnace or air handler) works with the heat pump and takes over in extreme cold.
3. The filter only gets changed when the unit breaks down.
A dirty filter cuts airflow. It gets checked regularly.
4. You can reuse the old unit's size without checking.
The house may have changed: insulation, windows, added rooms. Capacity is confirmed on site.
0 / 4 right answers
What people ask us about this kind of work
Can I keep my current ducts?
What happens in extreme cold?
Furnace, air handler, ducted: what is the difference?
Are there grants?
Do I need a permit?
How much can I save?
How is the LogisVert assistance calculated?
Will my current thermostat work?
Central or wall units: which one?
Does AirGreen hold the required licences?
Is the estimate free?
No question matches. Write to us: we answer.
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).