Project

Installation of a MIDEA EVOX G3 2-Ton Electric Furnace with Central System and Air Handler in Laval-Ouest

AirGreen installs a 2-ton MIDEA EVOX G3 electric furnace in Laval-Ouest with a central system, air handler, adapted ducts, and careful drainage for reliable HVAC comfort.

By AirGreen Climatisation & Chauffage Admin12 min read
Installation of a MIDEA EVOX G3 2-Ton Electric Furnace with Central System and Air Handler in Laval-Ouest
Installation of a MIDEA EVOX G3 2-Ton Electric Furnace with Central System and Air Handler in Laval-Ouest
–chapters in this story
12 minreading time
–type of installation
2026year published
The tour

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.

Generic diagram: central heat pump, indoor module and ducts

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.

  1. It captures or rejects heat outside. It sits on a level base, above the snow, with free space all around.

  2. The insulated refrigerant lines enter the house through a sealed opening and run to the indoor coil.

  3. A shut-off switch near the outdoor unit isolates it safely for service.

  4. Sitting on the indoor module, it moves heat between the house air and the refrigerant.

  5. Electric furnace or air handler: its fan pushes air through the ducts. The electric backup takes over in extreme cold.

  6. Supply ducts bring air to the rooms; returns bring it back to the unit. Their condition matters as much as the unit's.

  7. It protects the coil and the fan. A dirty filter cuts airflow, so it gets checked regularly.

  8. It runs the heat pump and the backup heat. It must be compatible with the installed system.

The job

A Compact, Clean Central Installation Designed for a Demanding Mechanical Basement

In Laval-Ouest, our AirGreen team installed a MIDEA EVOX G3 2-ton electric furnace, integrated into a central system with an air handler, in a mechanical space where every inch counted. From our arrival, the challenge was clear: install modern, high-performance, and well-connected equipment, while respecting the existing environment already packed with ducts, water heaters, drainage lines, electrical supply, and access constraints.

The project photo clearly shows the reality of the site: a compact mechanical room, with a water heater in immediate proximity, existing metal ducts on the ceiling, insulated flexible ducts, an air return network, and several connections to coordinate precisely. In this type of installation, the quality of the result does not only depend on the choice of machine. It primarily depends on how the system is integrated into the existing space.

At AirGreen, we therefore approached this installation as a central residential HVAC project requiring detailed planning, clean execution, and particular attention to air circulation.

Why choose a MIDEA EVOX G3 2-ton electric furnace?

The MIDEA EVOX G3 2-ton is a particularly attractive solution for homeowners looking to improve their indoor comfort with a modern, reliable central system well-suited for homes in Laval, Montreal, Longueuil, the North Shore, and the South Shore.

In this project in Laval-Ouest, the choice of a MIDEA EVOX G3 air handler met several objectives:

  • ensure uniform air distribution throughout the home;
  • modernize central equipment;
  • optimize available space in a confined mechanical room;
  • improve compatibility with an existing duct network;
  • prepare the system for stable performance in central heating and air conditioning;
  • offer a clean, durable, and easy-to-maintain installation.

The 2-ton size is often suitable for medium-sized residences when the thermal load calculation confirms that the capacity matches the building's actual needs. A common mistake is to choose an oversized machine thinking it will provide more comfort. In reality, oversized equipment can cause short cycling, poorer dehumidification, more wear and tear, and less stable comfort. Conversely, undersized equipment may run too long without effectively reaching the desired temperature.

Site Assessment: A Dense, Yet Usable Mechanical Space

One of the most important elements of this installation was the analysis of the mechanical basement. The space available around the furnace was limited by several components:

  • a water heater installed to the right of the unit;
  • metal ducts already present on the ceiling;
  • insulated flexible ducts in the upper part;
  • a drain outlet to coordinate;
  • a condensate pump installed at the bottom of the equipment;
  • clearances to be respected for future maintenance;
  • a cabinet and fixed elements nearby.

The photo shows an installation where the connection of galvanized ducts was carried out with care. The metal transitions are aligned to optimize air passage between the air handler and the existing network. This step is essential: a good appliance that is poorly connected can lose much of its efficiency due to air restrictions, leaks, turbulence, or unbalanced returns.

Our team therefore worked on a precise integration of the casing, transitions, and air return to achieve a functional, solid, and aesthetic result.

The Importance of Metal Transitions in a Central HVAC Installation

In an HVAC installation like this one, duct transitions are not just accessories. They play a decisive role in the overall performance of the system.

A poorly designed transition can create:

  • a loss of static pressure;
  • excessive air noise;
  • a decrease in airflow in certain rooms;
  • unnecessary strain on the ventilation motor;
  • premature wear of certain components;
  • reduced comfort in distant areas.

In Laval-Ouest, we paid particular attention to the visible connections above and around the equipment. The metal ducts were adjusted to allow for a stable connection between the MIDEA electric furnace and the central distribution network. The joints were sealed to limit air loss and ensure better efficiency.

The result is a clean, structured installation adapted to the client's actual space, rather than a standard installation imposed without considering the building.

Condensate Management: A Small Detail That Prevents Big Problems

In the photo, a condensate pump is visible at the bottom of the system. This detail is very important in a basement where gravity drainage is not always possible or sufficiently reliable.

In modern central systems, condensation must be rigorously managed, especially when the unit operates in cooling mode. Poor drainage management can lead to:

  • overflows;
  • floor damage;
  • musty odors;
  • safety shutdowns;
  • avoidable service calls;
  • deterioration around the equipment.

Our team therefore installed and connected the pump to ensure reliable drainage of condensate water. The pipes were carefully positioned to avoid kinks, obstructions, and unnecessary tension. This type of finish is one of the details that distinguishes a durable installation from one that is merely functional on the day it's installed.

A Central System Designed for Future Maintenance

Another important point in this project was accessibility. In several basements in Laval, Montreal, and the North Shore, mechanical equipment is installed in spaces where homeowners gradually add storage, a water heater, a softener, a cabinet, or other components. The result: maintenance can sometimes become difficult.

During the installation of this MIDEA EVOX G3 electric furnace, we made sure to maintain convenient access to the service panels, filter, connections, and condensate pump. A central system must be inspectable, cleanable, and maintainable without unnecessarily disassembling the mechanical environment.

This is an aspect often overlooked when choosing an HVAC contractor. Yet, well-designed access facilitates:

  • filter replacement;
  • annual inspection;
  • diagnosis in case of problems;
  • component cleaning;
  • drainage verification;
  • equipment lifespan.

Mistakes to Avoid When Installing a Central Electric Furnace

This project in Laval-Ouest illustrates several mistakes homeowners should avoid when planning a similar installation.

Choosing equipment without checking the duct network

The duct network is as important as the machine. Even a well-sized MIDEA EVOX G3 will not perform at its best if the ducts are too restrictive, poorly sealed, or unbalanced.

Neglecting the space around the unit

A central unit must breathe, be accessible, and remain safe. The installation must take into account the water heater, walls, low ceilings, existing ducts, and maintenance needs.

Underestimating the importance of drainage

A poorly installed condensate pump can become a source of recurring problems. In this project, we integrated drainage from the planning stage, not at the last minute.

Accepting improvised duct transitions

Transitions must be solid, well-sized, and well-sealed. The visible connections on this project demonstrate the importance of precise metalwork in a central system installation.

An installation adapted to the realities of Laval-Ouest homes

Laval-Ouest has a varied housing stock: older homes, progressive renovations, sometimes narrow mechanical basements, and duct networks that have often been modified over the years. Installing a central system in this context requires more than a theoretical approach.

Our AirGreen team regularly works in Laval, Montreal, Longueuil, on the North Shore, and the South Shore on similar projects where the main challenge is adapting to the existing building. Each residence has its specific features: available height, air return, water heater location, electrical access, duct condition, insulation, number of floors, comfort needs, and occupant habits.

In this Laval-Ouest home, our goal was to achieve a reliable, clean, and space-consistent central installation. The MIDEA EVOX G3 2-ton was positioned and connected to provide a solid foundation for daily comfort.

The Role of Sizing in Indoor Comfort

A 2-ton air handler is not chosen solely based on the approximate surface area of the house. Proper sizing depends on several factors:

  • wall and roof insulation;
  • window quality;
  • house orientation;
  • air infiltration level;
  • floor configuration;
  • duct network condition;
  • heating needs;
  • cooling needs;
  • client's comfort expectations.

At AirGreen, we prioritize a realistic approach. The goal is not to install the largest appliance, but the most suitable one. A properly sized system operates more efficiently, provides a more stable temperature, and reduces the risk of discomfort between rooms.

A Clean Finish That Reflects Quality Work

The visual aspect of a mechanical installation also matters. A well-organized mechanical room facilitates maintenance, reduces the risk of errors, and inspires confidence in the owner. In this project, the metal connections, condensate pump, drainage lines, and electrical connections were installed in an orderly manner.

The quality of an installation is often noticeable in the details:

  • duct alignment;
  • cleanliness of joints;
  • stability of the appliance;
  • access to components;
  • absence of misplaced wires or pipes;
  • clear drainage management;
  • transitions adapted to the actual basement configuration.

These details are not decorative. They directly influence the durability, safety, and ease of maintenance of the system.

A Reliable Central Solution for Residential Comfort in Laval, Montreal, and Surroundings

This installation of a MIDEA EVOX G3 2-ton electric furnace in Laval-Ouest represents exactly the kind of project where field expertise makes all the difference. The client needed a modern, well-integrated central system capable of operating efficiently in a restricted mechanical environment.

Our team delivered a clean, structured installation adapted to the site's constraints. The result is a central system that combines performance, accessibility, and execution quality.

For homeowners in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this project demonstrates the importance of choosing an HVAC contractor capable of evaluating the entire context: equipment, ducts, available space, drainage, future maintenance, and real comfort in the home.

Why AirGreen for a Central HVAC Installation?

AirGreen specializes in residential and commercial HVAC system installations, including electric furnaces, central heat pumps, central air conditioners, wall-mounted systems, and multi-zone systems. Our strength lies in our ability to adapt each installation to the reality of the building.

In a project like the one in Laval-Ouest, our value is not limited to installing a machine. We analyze the space, anticipate constraints, design connections, verify accessibility, and ensure a durable installation.

It is this approach that allows for a comfortable, reliable, and well-integrated system for years to come.

Practical tips for homeowners considering a similar installation

Before installing a central electric furnace or a MIDEA EVOX G3 air handler, it is recommended to check:

  1. The condition of the existing ductwork.
  2. The available space around the equipment.
  3. The type of drainage possible.
  4. The available electrical capacity.
  5. Access for maintenance.
  6. Proper sizing for the home.
  7. Compatibility with a current or future central heat pump.
  8. The quality of filters and return air.
  9. Actual heating and cooling needs.
  10. Applicable grant possibilities depending on the complete system installed.

A good installation always begins with a good assessment. This is especially true in homes where the mechanical basement is already occupied by several pieces of equipment.

A project representative of our HVAC expertise

This achievement in Laval-Ouest perfectly illustrates our method: precision, adaptation, cleanliness, and attention to detail. The MIDEA EVOX G3 2-ton was integrated into a complex environment without compromising access, airflow, or the quality of connections.

For AirGreen, every installation is an opportunity to deliver a lasting result, not just a quick start-up. In this project, the ductwork, condensation management, and integration around the water heater demonstrate the importance of a well-thought-out installation.

The steps

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.

Step 1 of 9The on-site estimate

We look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.

  1. The on-site estimateWe look at the ducts, the current indoor module, the electrical panel and the planned spot for the outdoor unit.
  2. The quoteThe equipment combination, capacity and price, in writing. We check whether the combination qualifies for assistance programs.
  3. Getting readyAccess protected, old unit disconnected and removed when it is being replaced.
  4. The indoor moduleElectric furnace or air handler, with its coil, connected to the supply and return ducts.
  5. The outdoor unitOn a level base, raised above the snow, with free space all around.
  6. The refrigerant linesInsulated, they enter through a sealed opening and run to the indoor coil.
  7. Electrical and thermostatDedicated circuits, accessible disconnect, a thermostat that works with the heat pump and the backup heat.
  8. Tests and start-upLeak test, vacuum, start-up, airflow check and a test of both modes.
  9. The walkthroughFilter, thermostat, backup heat in extreme cold: what to know before winter.
Your numbers

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.

Size checkYour electric furnace, in BTU/h
–BTU/h of installed electric heat

    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.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Going further

    Your own project, step by step

    Through the seasons

    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.
    At your place

    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.

    0 / 6 checked
    True or false

    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.

    2. In extreme cold, electric backup heat can take over.

    3. The filter only gets changed when the unit breaks down.

    4. You can reuse the old unit's size without checking.

    Frequently asked questions

    What people ask us about this kind of work

    11 questions
    Can I keep my current ducts?
    Often, yes: the central heat pump connects to the existing ducts. We check their condition and size during the estimate.
    What happens in extreme cold?
    The indoor module (furnace or air handler) works with the central heat pump and takes over in extreme cold.
    Furnace, air handler, ducted: what is the difference?
    The furnace or air handler is the indoor module of the central system. A ducted system hides in the ceiling: all you see are small supply grilles.
    Are there grants?
    Depending on the equipment and your situation, assistance programs may apply. AirGreen checks the exact combination before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city. See permits and by-laws, and we check for your address.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Will my current thermostat work?
    Not always: the thermostat has to run the heat pump and the backup heat. We check compatibility during the estimate.
    Central or wall units: which one?
    If the house has ducts in good shape, a central system heats and cools every room at once. Without ducts, wall units or a multi-zone are often simpler. We compare on site.
    Does AirGreen hold the required licences?
    Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
    Is the estimate free?
    Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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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).

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