Installation of a 2-ton MIDEA EVOX G3 central heat pump in Sainte-Catherine
AirGreen installs a MIDEA EVOX G3 2-ton central heat pump in Sainte-Catherine: clean wall-mount, reliable performance, and HVAC expertise on the South Shore.
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The job on one screen
The unit’s data sheet
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 article, chapter by chapter
A compact, clean, and durable installation in a residential yard in Sainte-Catherine
In Sainte-Catherine, on the South Shore, our AirGreen team recently completed the installation of a MIDEA EVOX G3 2-ton central heat pump, a system designed to offer excellent performance in both heating and cooling, while integrating seamlessly into the available outdoor space.
In this project, one of the most important elements was not only the choice of machine but also its positioning. As can be seen in the installation, the outdoor unit was securely fixed on a metallic wall bracket, above ground, in a well-protected brick corner. This type of mounting is particularly relevant in the greater Montreal, Longueuil, Laval, North Shore, and South Shore regions, where snow accumulation, ice, fallen leaves, and space constraints can quickly impair the performance of a poorly installed heat pump.
Why a MIDEA EVOX G3 2-ton for this residence?
The MIDEA EVOX G3 is a new-generation central heat pump that is very well suited for homes looking for a complete central heating and cooling solution. In this specific case, the 2-ton capacity represented an excellent balance between comfort, energy efficiency, and adaptation to the actual needs of the property.
A system that was too small might have run constantly without achieving the desired comfort. A system that was too large would have risked short cycling, which can reduce comfort, increase wear and tear, and hinder dehumidification in the summer. At AirGreen, we therefore place great importance on choosing the right capacity before proceeding with an HVAC installation.
A well-chosen outdoor location
The outdoor unit was installed in a brick wall corner, which required particular attention. Poor positioning could have created several problems: difficult access for maintenance, vibrations transmitted to the structure, insufficient clearance for air circulation, or unnecessary exposure to debris.
Our team therefore opted for a robust wall installation with metal brackets, allowing the heat pump to be kept above ground level. This approach offers several concrete advantages:
- better protection against snow and ice;
- reduced risks from leaves and ground debris;
- cleaner access for future HVAC maintenance;
- more stable installation in a confined space;
- better durability of the outdoor unit.
The result is a neat, safe, and well-integrated installation on the brick facade.
Particular attention to vibrations and stability
A central heat pump installed on a wall bracket must be precisely fixed. The bracket must be well anchored, perfectly level, and adapted to the weight of the equipment. On this project in Sainte-Catherine, our team took care to stabilize the unit to limit vibrations and ensure silent operation.
This detail is often underestimated. However, poor fastening can lead to noise in the house, premature aging of refrigerant connections, and a less comfortable customer experience. For a residence located in a quiet area of the South Shore, sound comfort is as important as energy performance.
Clean and protected connections
The pipework was carefully routed to protect the connections between the outdoor unit and the indoor system. In a central installation, the quality of the connection directly influences the reliability of the system. The lines must be well insulated, properly oriented, and installed to avoid unnecessary tension.
We also pay particular attention to drainage, the slope of necessary elements, and the protection of exposed components. A good installation is not just about appearance: it must also be designed to withstand Quebec winters, freeze-thaw cycles, winds, and typical temperature fluctuations in Montreal, Longueuil, Laval, the North Shore, and the South Shore.
The advantages of a central heat pump rather than a simple air conditioner
In several residential projects, homeowners still hesitate between a central air conditioner and a central heat pump. However, in the majority of cases, the central heat pump becomes the most logical choice.
It not only allows for efficient cooling in summer but also for heating for a large part of the year. With modern models like the MIDEA EVOX G3, electric heating by heat pump can reduce reliance on auxiliary systems and improve the overall efficiency of the home.
A simple air conditioner does not offer the same possibilities. It does not heat, it is generally less advantageous when considering subsidy programs, and it offers less long-term flexibility. That is why more and more AirGreen customers choose a heat pump rather than just an air conditioning unit.
A project representative of current needs on the South Shore
In Sainte-Catherine, as elsewhere on the South Shore, many homes have been built or renovated with central systems that are now reaching the end of their useful life. Homeowners are then looking for a reliable, efficient solution that is eligible for assistance programs when the conditions are met.
The MIDEA EVOX G3 2-ton effectively meets this type of need. It offers a modern solution to replace an old system while improving indoor comfort. In this project, the objective was clear: install a performing, discreet system, accessible for maintenance, and adapted to the existing configuration.
Mistakes to avoid during a central heat pump installation
A poorly planned HVAC installation can significantly reduce the performance of a good machine. Here are some common mistakes that we systematically avoid on our job sites:
Installing the unit too close to the ground
In Quebec, an outdoor unit placed too low can quickly become blocked by snow. This forces the machine to work harder, reduces its efficiency, and can cause safety shutdowns.
Neglecting air clearances
A heat pump needs a good volume of air around it. Even a high-performance machine like the MIDEA EVOX G3 cannot deliver its full performance if it is installed in an overly confined or poorly ventilated space.
Underestimating drainage and winter conditions
In heating mode, a heat pump produces defrost water. The water must be able to drain properly. If it accumulates in the wrong place, it can form ice around the unit.
Choosing capacity without analysis
The 2-ton capacity must match the actual needs of the house. At AirGreen, we do not recommend a capacity based solely on approximate surface area. We also look at insulation, configuration, sun exposure, existing systems, and client expectations.
A solution that integrates well with future maintenance
A good HVAC project must also facilitate future interventions. In this installation in Sainte-Catherine, the wall mounting of the outdoor unit allows reasonable access to service panels, connections, and main components. This simplifies seasonal checks and interventions as needed.
We always recommend regular HVAC maintenance to preserve the heat pump's performance, extend its lifespan, and detect minor problems before they become costly. Filters, coils, connections, pressures, and the general condition of the system must be checked according to usage and applicable recommendations.
MIDEA EVOX G3: A serious option for the Quebec climate
The MIDEA EVOX G3 range is particularly interesting for homeowners who want to modernize their central system without sacrificing energy efficiency. It is often chosen for projects where value for money, performance, and potential eligibility for subsidies are important criteria.
Depending on the exact system configuration, the model installed, and the requirements of current programs, a high-performance central heat pump may be eligible for certain financial aid. As programs evolve, we always validate applicable information at the time of quotation and installation.
The AirGreen Approach: Precision, Transparency, and Field Experience
This project in Sainte-Catherine accurately reflects our way of working. We don't just install a machine. We analyze the location, building constraints, access, structure, air circulation, client needs, and the durability of the installation.
Our teams regularly work in Montreal, Laval, Longueuil, on the North Shore, and the South Shore, which gives us an excellent understanding of local realities: townhouses, bungalows, condos, aging central systems, backyard constraints, narrow accesses, brick walls, wall brackets, snow levels, and co-ownership requirements.
A clean, solid, and professional final result
The final result is a MIDEA EVOX G3 2-ton central heat pump installed cleanly, on a stable wall mount, with a professional finish and a layout designed for performance. The unit is clear, well-positioned, and ready to offer reliable comfort for several seasons.
For homeowners in Sainte-Catherine and the surrounding areas considering replacing an old central system, this project demonstrates the importance of entrusting the installation to a team that understands both the machine and the building. A high-performance heat pump yields its best results when installed with method, experience, and attention to detail.
At AirGreen, we place this rigor at the heart of every central heat pump, central air conditioning, HVAC installation, and HVAC maintenance project, throughout the greater Montreal, Laval, Longueuil, North Shore, and South Shore regions.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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).