Installation of a 2.5-ton MIDEA EVOX G3 central heat pump in Saint-Vincent-de-Paul, Laval: a meticulous HVAC integration for a residential home
AirGreen installs a MIDEA EVOX G3 2.5 ton central heat pump in Saint-Vincent-de-Paul: meticulous integration, central comfort, HVAC efficiency, and durable installation in Laval.
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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 Central Heat Pump Precisely Installed in a Restricted Outdoor Environment
In Saint-Vincent-de-Paul, a well-established residential neighbourhood in Laval, our AirGreen team successfully installed a MIDEA EVOX G3 2.5 ton central heat pump in a context where every detail mattered: the available space near the foundation, the proximity of the exterior cladding, access to the electrical disconnect, protection of refrigerant lines, and the overall integration of the outdoor unit.
The photo of this installation highlights a very practical aspect of the work performed: the MIDEA outdoor unit was positioned close to the house wall, on a robust metal stand, with meticulously organized refrigerant and electrical connections. The outdoor electrical box, protected lines, and clearance around the unit are also visible. This type of configuration requires meticulous planning, especially when working near a foundation, under wooden or composite exterior cladding, and in an area where access may be limited by landscaping.
In a home in Saint-Vincent-de-Paul, choosing a 2.5 ton central heat pump generally meets a clear need: to achieve uniform comfort throughout the residence, without multiplying wall-mounted units in rooms. Unlike a wall-mounted air conditioner or a wall-mounted heat pump, a central solution works with the existing ductwork to distribute heated or cooled air to multiple zones of the house. For owners looking to modernize their HVAC system while maintaining a discreet interior aesthetic, the MIDEA EVOX G3 is a particularly relevant option.
At AirGreen, we approached this project as a precision installation, not just a simple equipment placement. A successful HVAC installation relies on three inseparable elements: proper sizing, mechanical installation quality, and rigorous system commissioning.
MIDEA EVOX G3 2.5 tons: A Strategic Choice for Central Comfort in Laval
The MIDEA EVOX G3 is designed to meet the requirements of residences seeking an efficient heating and cooling solution. In this installation in Saint-Vincent-de-Paul, the 2.5 ton capacity was selected to offer a good balance between power, efficiency, and operational stability.
A central heat pump must be carefully sized. An undersized unit can operate excessively during periods of high heat or sustained cold. An oversized unit, on the contrary, can create short cycles, reduce dehumidification in summer, and decrease perceived indoor comfort. For this reason, our recommendations take into account the area, insulation level, ductwork, heating and cooling habits, as well as the overall configuration of the house.
In this project, the MIDEA EVOX G3 2.5 ton central heat pump represented a suitable solution to improve indoor comfort while modernizing the system's energy efficiency. This type of equipment is particularly appreciated in Laval homes, where many properties already have central air distribution and can benefit from a high-performance upgrade without major interior modifications.
A Compact, Well-Positioned, and Accessible Outdoor Unit
In the photo, the outdoor unit is installed near the foundation, with the MIDEA logo visible on the casing and the AirGreen label affixed to the side panel. This configuration demonstrates the importance of thoughtful positioning. The unit needed to be close enough to technical connections to limit unnecessary lengths, but also clear enough to allow adequate airflow and facilitate future access for HVAC maintenance.
The metal stand under the unit plays an essential role. It stabilizes the heat pump, elevates it from the ground, and reduces its direct exposure to humidity, debris, snow, and ground variations. In Laval, where freeze-thaw cycles can be demanding for outdoor installations, this approach contributes to the system's durability.
The choice of location also considered the immediate environment: foundation, exterior cladding, vegetation, access to the electrical box, and protection of the lines. A central heat pump must not only be installed in the right place technically; it must also be neatly integrated into the building. This is what distinguishes a durable installation from one that is merely functional.
Visible and Well-Protected Refrigerant Connections
The image clearly shows the refrigerant lines connected to the outdoor unit, including an insulated section and protection around the lines. These elements are crucial for system performance. Refrigerant lines must be installed carefully to avoid mechanical stress, efficiency losses, vibrations, and risks of premature deterioration.
In a professional HVAC installation, connections are never improvised. Bends must be clean, connections must be leak-tight, lines must be protected, and insulation must be adapted to outdoor conditions. A poorly insulated or poorly secured line can impair performance, create condensation, increase energy consumption, or reduce the system's lifespan.
For this installation in Saint-Vincent-de-Paul, our team paid particular attention to the alignment of the lines and their transition to the wall. The objective was to achieve a reliable, clean, and easily verifiable installation for future maintenance. The result is a visible, yet orderly, technical integration that allows technicians to access important components without difficulty.
An Electrical Disconnect Placed for Safety and Maintenance
To the right of the unit, an outdoor electrical box installed on the wall is visible. This disconnect allows the power to the appliance to be cut during maintenance, inspections, or potential service interventions. Its presence near the heat pump is an essential safety feature.
The electrical installation of a central heat pump must comply with manufacturer's requirements and applicable standards. This includes circuit gauge, electrical protection, outdoor connection, component watertightness, and accessibility to the disconnect. In this project, the location of the box was chosen to remain practical, visible, and accessible, without detracting from the house's exterior appearance.
This part of the work is often less spectacular than the installation of the unit itself, but it is fundamental. A high-performance machine like the MIDEA EVOX G3 must be connected under safe and compliant conditions to ensure long-term stable operation.
Specific Challenges of an Installation Near the Foundation
Installing a heat pump near a foundation requires particular attention. Care must be taken to ensure the unit is not too low, too tight against the wall, or too exposed to water runoff. Snow, ice, humidity, and seasonal ground movements must also be considered.
In this specific case, the installation area was relatively narrow. The presence of exterior cladding, the foundation, the electrical box, and nearby vegetation demanded precise work. Our team therefore organized the space to maintain a clean and functional installation, without compromising access to the connections.
The main technical points addressed during this installation included:
- Stable positioning of the unit on a metal stand.
- Necessary clearance for the fan and service panels.
- Protection of refrigerant lines.
- Access to the electrical disconnect.
- Vibration limitation.
- Aesthetic integration with the exterior wall.
- Preparation for future HVAC maintenance work.
These details may seem simple, but they directly influence the system's reliability. A heat pump installed in a poorly planned space can become difficult to maintain, noisier, or less efficient.
Central Comfort: A Noticeable Difference Throughout the House
A MIDEA EVOX G3 2.5 ton central heat pump can treat the entire house through the ductwork. This approach is particularly advantageous for owners who want a more uniform temperature in bedrooms, living room, kitchen, basement, and circulation areas.
In a house with existing ducts, the central system can offer more discreet comfort than a wall-mounted solution. There are no visible indoor units in the main rooms, and air distribution is done from existing registers. For many families in Laval, this feature is a significant advantage, especially when the goal is to modernize heating and air conditioning without changing the interior appearance.
The MIDEA EVOX G3 technology also allows for modulating operation, which helps maintain a more stable temperature. Instead of alternating between abrupt on and off cycles, the system can adjust its output according to actual needs. This modulation contributes to comfort, reduced operating noise, and energy efficiency.
Energy Efficiency and Potential Subsidies
When an owner invests in a central heat pump, energy efficiency is one of the most important decision criteria. A high-performance system can reduce heating and cooling consumption, especially when it replaces or complements less efficient equipment.
The MIDEA EVOX G3 is designed to meet current expectations for residential performance. Depending on the exact pairing of components, model numbers, applicable certifications, and current criteria, this type of heat pump may be eligible for certain financial assistance programs, particularly those related to energy efficiency in Quebec.
At AirGreen, we assist our customers in verifying the necessary documents for programs such as Hydro-Québec's LogisVert, when the installed system meets the required criteria. This step must always be validated with the exact project information, as eligibility depends on several elements: outdoor model, indoor unit, certified combination, installation date, and program requirements.
For homeowners in Montreal, Laval, Longueuil, the North Shore, or the South Shore, this verification is an important step in calculating the real cost of the project. A subsidy can influence the final decision, but it should never replace a serious technical analysis. The right system is still the one that correctly meets the needs of the house.
Commissioning: The Step That Confirms Installation Quality
After the outdoor unit is installed, the lines are connected, and electrical connection is made, commissioning verifies the full operation of the heat pump. This step is essential. It allows us to check that the system communicates correctly, that operating parameters are adequate, and that the equipment performs as expected.
During the commissioning of a MIDEA EVOX G3 2.5 ton central heat pump, our technicians notably verify:
- Operation in cooling mode.
- Operation in heating mode.
- Operating pressures and temperatures.
- Communication between components.
- Thermostat response.
- Abnormal vibrations and noises.
- Quality of connections.
- Accessibility to service panels.
- General system behavior after startup.
An installation may appear clean visually, but only rigorous commissioning confirms that the machine is ready to operate correctly. This is a step we never neglect, as it protects both system performance and the client's investment.
Practical Tips for Homeowners After Installation
Once the heat pump is installed, a few good habits help preserve its efficiency. For this installation in Saint-Vincent-de-Paul, we advised the owner to keep the area around the outdoor unit clear, especially in winter and autumn.
Here are the most useful actions:
- Remove fallen leaves and debris around the unit.
- Prevent vegetation from growing too close to the machine.
- Monitor snow accumulation around the stand.
- Do not obstruct the outdoor fan.
- Replace indoor system filters according to recommendations.
- Schedule periodic professional HVAC maintenance.
- Promptly report any unusual noise or performance decrease.
Good maintenance helps maintain energy efficiency, extend equipment lifespan, and avoid preventable repairs. A central heat pump is a significant investment; it deserves serious follow-up.
What This Installation Reveals About the AirGreen Approach
This achievement in Saint-Vincent-de-Paul perfectly illustrates our working approach at AirGreen. We don't just install a machine. We analyze the space, building constraints, technical requirements, future access, exterior aesthetics, and the comfort sought by the client.
Our experience in Greater Montreal allows us to adapt each installation to its environment. In Montreal, we often work with restricted outdoor spaces. In Laval, single-family homes frequently require careful integration near the foundation or side yard. In Longueuil and on the South Shore, projects often require particular attention to snow, patios, and backyards. On the North Shore, exposure conditions can influence the choice of location and support.
In each case, our goal remains the same: to provide a reliable, clean, high-performance HVAC installation tailored to the client's actual needs.
Mistakes to Avoid When Choosing a Central Heat Pump
Before investing in a central heat pump, many homeowners focus solely on price or brand. These elements are important, but they are not enough. The quality of the result also depends on sizing, ductwork, the location of the outdoor unit, and the installer's expertise.
The most common mistakes are:
- Choosing a capacity without a serious home assessment.
- Installing the outdoor unit too close to an obstruction.
- Neglecting access for service.
- Underestimating the importance of support and leveling.
- Improperly protecting refrigerant lines.
- Forgetting the impact of outdoor noise.
- Ignoring the condition of the ductwork.
- Relying solely on the subsidy without validating the system's technical relevance.
This installation of a MIDEA EVOX G3 2.5 tons in Saint-Vincent-de-Paul precisely avoids these pitfalls thanks to rigorous planning and professional execution.
A Sustainable Installation for a Better Equipped Home
The MIDEA EVOX G3 2.5-ton central heat pump installed in Saint-Vincent-de-Paul, Laval, offers homeowners a modern solution to improve indoor comfort throughout the year. The outdoor unit, well-positioned and properly connected, demonstrates an installation designed for performance, safety, and future maintenance.
For homeowners considering modernizing their heating and cooling system, this project demonstrates the importance of comprehensive technical support. A good heat pump only performs at its best when it is well-chosen, well-installed, and properly commissioned.
At AirGreen, we apply this same rigor to every project, whether it is located in Laval, Montreal, Longueuil, on the North Shore, or on the South Shore. This installation in Saint-Vincent-de-Paul is a concrete example: an efficient central solution, clean execution, and constant attention to details that genuinely influence daily comfort.
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).