Installation of a 2-ton MIDEA EVOX G3 Electric Furnace in Delson: Compact Central System with Air Handler for Reliable Comfort in Montérégie
AirGreen installs a 2-ton MIDEA EVOX G3 electric furnace with a central air handler in Delson: meticulous integration, adjusted ducts, reliable drainage, and lasting HVAC comfort.
- City
- Region
- Equipment
- Brand
- Challenges
- Published
The job on one screen

The article, chapter by chapter
A Central MIDEA EVOX G3 Installation in Delson, Designed for Real-World Performance in a Confined Mechanical Space
In Delson, on the South Shore, our AirGreen team recently completed the installation of a 2-ton MIDEA EVOX G3 electric furnace, configured as a central system with an air handler. This type of HVAC installation requires a very precise approach: it's not just about placing a new indoor unit, but integrating modern equipment into an existing duct network, respecting available clearances, ensuring reliable drainage, neatly connecting refrigerant and electrical lines, and then validating the entire system's behavior under real-world conditions.
The photo of this installation clearly shows the nature of the project: a tight mechanical space, two central modules installed side-by-side, existing metal ducts, several ventilation transitions, PVC drainage piping, insulated refrigerant connections, and limited technical access. These are precisely the details that differentiate between a theoretically correct installation and a durable, quiet, clean, and efficient HVAC installation.
In this Delson residence, the client wanted to modernize their central comfort without multiplying wall units in the rooms. The choice of a 2-ton MIDEA EVOX G3 air handler allowed for centralized air distribution while improving system efficiency and the quality of mechanical integration. For a house located on the South Shore, where temperature variations can be significant between humid summer days and cold winter periods, a well-sized central system represents a particularly coherent solution.
Why a central electric furnace with an air handler was the right choice for this residence
The project was not limited to replacing a device. It was necessary to evaluate the entire context: serviced area, duct network, indoor unit location, access to connections, drain slope, return air configuration, available space for future maintenance, and compatibility with outdoor equipment.
A 2-ton MIDEA EVOX G3 electric furnace is an interesting solution when an owner wants to achieve:
- comfort distributed by ducts in several rooms;
- a discreet solution, without visible wall units;
- better temperature uniformity;
- an installation suitable for homes in Delson, Longueuil, Montreal, Laval, the North Shore and the South Shore;
- a solid technical foundation for a modern central system;
- better heating and cooling management through a single network.
In this specific case, the 2-ton capacity was appropriate for the house's needs. A unit that was too small would have run for too long, struggling to maintain comfort during periods of intense heat or cold. A unit that was too large could have led to short cycling, poorer dehumidification, and premature wear. Sizing is therefore a central point in every HVAC installation we carry out.
Technical reading of the visible installation on site
The installation image reveals several important elements. The installed MIDEA unit is positioned on the left, with its access panels clearly visible, its nameplates, its AirGreen label, and the technical documents affixed to the front. The module on the right is connected to an existing network of metal ducts, with transitions adapted to the ceiling and a fairly limited workspace between the two units.
This type of configuration requires rigorous planning, as the space between equipment is restricted. Cables, conduits, fittings, and connections must be installed in an orderly manner to allow future access to service panels. A good installation should never block components that will need to be inspected, cleaned, or replaced during HVAC maintenance.
We also notice the presence of PVC drainage piping with red service caps. This detail is important: a well-designed condensate drain facilitates maintenance, reduces the risk of blockages, and allows for quicker intervention if water accumulation occurs. In a central system, drainage is often underestimated. However, poor drainage can cause system shutdowns, water damage, odors, or dirt accumulation in the condensate pan.
The visible refrigerant lines on the right, including a black insulated section, also show the importance of a clean and protected connection. Suction line insulation helps limit condensation and maintain system performance. When insulation is absent, poorly sealed, or compressed, efficiency can decrease, and moisture can appear on cold surfaces.
The main challenge: integrating a new air handler into an already dense mechanical system
In Delson, as in many homes on the South Shore, mechanical rooms are not always designed with a lot of free space. In this project, access was limited, available height had to be managed precisely, and existing ducts imposed their own constraints.
Our team had to work with an existing duct transition, ensuring a stable and sealed connection with the equipment. Metal fittings had to be adjusted to prevent air leaks, vibrations, and mechanical stress. A poor connection between the unit and the ducts can create several problems: excessive noise, pressure loss, discomfort in certain rooms, dust, reduced performance, and higher electricity consumption.
We therefore paid particular attention to three critical areas:
-
The transition between the air handler and the duct network
It must allow for smooth air circulation, without unnecessary constrictions. -
Sealing around metal fittings
Joints must be well sealed to reduce air loss in the mechanical room. -
Accessibility to service panels
Even in a confined space, main components must remain accessible for diagnostics and maintenance.
This approach is essential for a central system. The best equipment can yield disappointing results if the installation is not adapted to the house.
MIDEA EVOX G3 2 Tons: A Central Solution Adapted to the Quebec Market
The MIDEA EVOX G3 range is increasingly present in residential projects in Quebec, particularly for clients seeking a good balance between efficiency, comfort, technology, and value for money. In the context of a house in Delson, choosing a central MIDEA system allows for modernizing heating and cooling without altering the interior appearance of the rooms.
A central air handler works with the duct network to distribute conditioned air throughout the house. Unlike a wall-mounted air conditioner or a wall-mounted heat pump installed in a specific room, a central system aims for more uniform distribution. This is a significant advantage for owners who want to maintain a stable temperature in multiple living areas.
For this installation, the 2-ton format corresponds to a capacity often used in moderately sized homes, depending on insulation, orientation, fenestration, floor plan, and the condition of the ducts. At AirGreen, we always emphasize the importance of not choosing capacity solely based on a general impression. A house of the same area in Montreal, Laval, Longueuil, on the North Shore, or on the South Shore can have very different needs depending on its construction.
The details that truly influence comfort after installation
A central system is not just judged at startup. It is judged in the weeks and months that follow: temperature stability, noise, airflow, drainage, ease of maintenance, and customer satisfaction.
In this Delson project, several details were handled with care:
- Unit Alignment: the unit must be well positioned to avoid stress on connections.
- Connection to Main Duct: a poorly designed transition can impair airflow.
- Condensate Management: the drain must be accessible, stable, and designed to limit obstruction risks.
- Refrigerant Line Insulation: it protects performance and reduces condensation risks.
- Panel Access: essential for after-sales service and future inspections.
- Mechanical Finish: a clean mechanical room facilitates interventions and reduces error risks.
These aspects are sometimes invisible to the homeowner, but they have a direct impact on the durability of the installation. In a central HVAC installation, the quality of work around the unit matters as much as the unit itself.
What This Delson Installation Teaches Homeowners Considering a Central System
Do not underestimate the importance of existing ducts
When a client contacts us to replace or install an electric furnace, a central heat pump, or an air handler, they often think first about the brand and price. These elements are important, but the duct network is just as crucial.
A poorly sized or poorly sealed duct network can limit the performance of a new system. Some signs may indicate a problem:
- rooms that remain too hot or too cold;
- excessive air noise in the grilles;
- low airflow in certain areas;
- unusual dust;
- short cycles;
- discomfort despite recent equipment.
In this Delson project, the connection to existing ducts was one of the technical points to manage with precision. Our installers adapted the work so that the new equipment could operate under good conditions, without creating unnecessary restrictions.
Plan for maintenance from the day of installation
A successful installation is also one that can be easily maintained. HVAC maintenance of a central system includes, among other things, replacing or cleaning filters, checking the drain, inspecting connections, cleaning certain components, and analyzing the overall behavior of the system.
In the photo, you can see that the front panels of the MIDEA unit remain accessible. This is an essential point. Too often, we see installations where the equipment has been placed without thinking about future diagnostics. The result: every intervention becomes longer, more expensive, and more complicated.
At AirGreen, we always install with the next service visit in mind. A central system must be designed to function, but also to be properly inspected.
Understanding the difference between initial price and installed value
Two installations with the same equipment can produce very different results. The difference lies in the details: quality of connections, sealing, drainage, clearances, calibration, line protection, work method, and final verification.
For homeowners in Delson, Longueuil, Montreal, Laval, the North Shore, and the South Shore, it is important to compare quotes beyond the total amount. An offer should be clear on what is included:
- exact equipment type;
- tonnage or BTU capacity;
- indoor and outdoor configuration;
- ventilation work included;
- electrical connections;
- drainage;
- warranty;
- potential eligibility for subsidies;
- installation conditions;
- possible additional work.
A well-installed 2-ton MIDEA EVOX G3 electric furnace can offer excellent comfort, but it must be integrated into a complete system logic.
Subsidies and energy efficiency: what to check
Financial assistance programs, such as those associated with heat pumps and energy efficiency, can vary depending on models, unit combinations, dates, technical criteria, and administrative requirements. When a central system includes a heat pump compatible with an air handler, it is important to check eligibility according to exact model numbers, certified combinations, and conditions in effect at the time of installation.
For this type of project, our role is to guide the client towards relevant information and to provide the necessary documents when the equipment is eligible. Homeowners must always keep invoices, model numbers, proof of installation, and technical information. A common mistake is to assume that a device is eligible simply because it is new or efficient. Programs often require precise combinations.
Mistakes to avoid during a central installation
Based on our experience on the South Shore, in Montreal, in Laval, in Longueuil, and on the North Shore, we regularly see the same mistakes in central replacement projects:
Choosing capacity without analyzing the house
Too much capacity does not guarantee better comfort. On the contrary, it can reduce dehumidification and lead to frequent starts. Too little capacity can cause continuous operation on extreme days.
Neglecting duct transitions
Improvised transitions create air loss, noise, and restrictions. In a cramped mechanical room like the one in this project in Delson, the fabrication and adjustment of fittings are essential.
Forgetting service access
A blocked panel, an inaccessible drain, or a misplaced line complicates all future maintenance.
Poor drainage management
A condensate drain must be clean, accessible, and designed to withstand actual use. The visible service plugs on this installation are a good example of a practical detail that facilitates interventions.
Comparing only brands
The brand matters, but the installation matters just as much. A good device installed carelessly can be disappointing. A well-selected, well-connected, and well-checked device can provide stable performance for many years.
A customer experience centered on clarity and reliability
In this project, the client wanted a serious central solution, cleanly installed and adapted to the available space. Our team took the time to validate the mechanical environment, secure the connections, work cleanly around existing ducts, and leave a legible installation for future interventions.
At AirGreen, we know that a homeowner doesn't just want a new machine. They want to understand why this machine is suitable for their home, how it will be installed, what could influence performance, and what to expect after the work. This clarity is particularly important for central systems, as several components work together.
An installation like this one in Delson reflects our approach: technical, structured, honest, and oriented towards the actual result. We do not seek to make the project more complicated than it is, but we also refuse to simplify the details that matter.
Why AirGreen is often called for central installations on the South Shore
Projects involving electric furnaces, central heat pumps, air handlers, duct replacement, and HVAC modernization require expertise that combines several disciplines: ventilation, refrigeration, electricity, drainage, reading mechanical spaces, and after-sales service.
On the South Shore, particularly in Delson, Brossard, Saint-Constant, Candiac, La Prairie, and Longueuil, we work in very different homes: recent constructions, renovated houses, properties with finished basements, compact mechanical rooms, and duct networks sometimes modified over the years. This diversity allows us to adapt each installation to the reality of the building.
For this installation of a MIDEA EVOX G3 2-ton unit in Delson, the final result is a cleanly integrated central system, with particular attention paid to access, drainage, connections, and compatibility with the available space. It is this level of detail that allows an HVAC system to function well, not only on the first day but also in the long term.
Conclusion: a successful central installation relies on precision
This installation in Delson demonstrates that a project involving a MIDEA EVOX G3 2-ton electric furnace with an air handler is not just about replacing one metal box with another. Every connection, every clearance, every duct joint, every drain, and every access panel is important.
For homeowners considering a central HVAC installation in Montreal, Laval, Longueuil, on the North Shore or the South Shore, this achievement illustrates what to look for: suitable equipment, careful execution, intelligent mechanical integration, and a team capable of anticipating the practical challenges of the building.
At AirGreen, we attach as much importance to system performance as to the quality of its installation. In a confined space like this, this rigor becomes even more important. The result: a well-integrated MIDEA central system, ready to offer stable, efficient, and lasting comfort in a Delson home.
The job tools
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
An on-site estimate, the right capacity, the right equipment.
The on-site estimate is free and the quote follows within 24 hours.
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).
