Installation of a MIDEA EVOX G3 3-ton central heat pump in Delson: performance, precision, and year-round comfort
Installation of a MIDEA EVOX G3 central heat pump in Delson by AirGreen. Optimal comfort, energy savings, and performance down to -30°C. Ideal HVAC solution for Montreal, Laval, South Shore.
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 Central HVAC Solution Perfectly Suited to Delson's Climate Realities
At AirGreen, every HVAC installation project is an opportunity to demonstrate our technical rigor and understanding of the real needs of Quebec homeowners. This recent installation of a MIDEA EVOX G3 central heat pump in Delson perfectly illustrates how a well-chosen and well-installed system can transform a home's comfort, while significantly reducing energy costs.
The client, owner of a single-family home built in the 2000s, was facing a common problem: an aging heating system combined with inefficient air conditioning during the summer. Their goal was clear: to obtain a reliable central solution, performing well in Quebec winters, and capable of ensuring consistent comfort throughout the house.
Why the MIDEA EVOX G3 Central Heat Pump is a Strategic Choice
Controlled Power for Constant Comfort
The 3-ton MIDEA EVOX G3 central heat pump installed offers a cooling capacity of 36,000 BTU, perfectly suited to the building's area. Thanks to its heating capacity down to -30°C, it effectively meets the rigorous winters of the South Shore, including Delson.
Its key technical characteristics include:
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- ENERGY STAR® (cold climate) Certification
- Eco-friendly refrigerant R-454B
- Outdoor sound level: 62.5 dB(A)
This combination ensures an optimal balance between performance, energy savings, and acoustic comfort.
Inverter Technology Makes the Difference
Unlike traditional systems, Inverter technology allows the heat pump to continuously adjust its power. The result:
- Stable temperature without abrupt fluctuations
- Reduced electricity consumption
- Less wear and tear on components
In the case of this installation in Delson, this translated into an immediate improvement in comfort, especially in areas previously difficult to heat.
Installation Process: AirGreen's Precision and Expertise
Initial Technical Evaluation
Before any intervention, we conducted a complete analysis of the existing system, including:
- Inspection of ventilation ducts
- Verification of thermal insulation
- Precise thermal load calculation
This preliminary work is essential to ensure that the chosen central heat pump is perfectly sized.
Challenges Encountered on Site
Each installation has its specificities. In this project:
- The mechanical space was restricted
- Existing ducts required adjustments
- The outdoor support had to be securely fixed to a foundation wall
We opted for a robust wall mount, as visible in the installation, in order to:
- Protect the unit against snow and ice accumulation
- Reduce vibrations
- Ensure greater durability
Installation and Commissioning
Our technicians proceeded with:
- The installation of the MIDEA EVOX G3 outdoor unit
- The connection of refrigerant lines (3/8 - 3/4)
- A complete vacuum pull (micron test) to ensure airtightness
- System commissioning and calibration
Each step was carried out according to the strictest HVAC industry standards in Quebec.
Concrete Results for the Client in Delson
Improved Thermal Comfort
From the first few days:
- Uniform temperature in all rooms
- Elimination of cold spots
- Better humidity management
Reduced Energy Costs
Thanks to the energy efficiency of the MIDEA EVOX G3, the client noticed:
- A significant decrease in their heating bill
- Optimized air conditioning consumption
Quiet and Discreet
Despite its power, the unit remains relatively quiet, a point often emphasized by our clients on the South Shore.
LogisVert Grant: A Major Financial Advantage
This installation is eligible for the LogisVert grant, which can amount to approximately $3720 depending on current criteria.
At AirGreen, we assist our clients with:
- File preparation
- Eligibility validation
- Administrative follow-up
This support helps maximize the return on investment.
Practical Advice for Future Central Heat Pump Projects
Choosing the Right System
It is essential to consider:
- The building's area
- Insulation
- The type of ducts
- Local climate conditions (Montreal, Laval, Longueuil, North Shore, South Shore)
Avoiding Common Mistakes
- Undersizing or oversizing the unit
- Neglecting the condition of the ducts
- Choosing an installer without specialized expertise
Importance of Professional Installation
A high-performance heat pump that is poorly installed will lose much of its efficiency. At AirGreen, we emphasize:
- Adherence to technical procedures
- Optimization of airflow
- Durability of the installation
Feedback: A Typical AirGreen Project
This project in Delson perfectly reflects our approach:
- In-depth analysis
- Adapted solutions
- Precise execution
- Measurable results
We have completed similar installations in Montreal, Laval, Longueuil and throughout the North Shore and South Shore, with consistent results in terms of customer satisfaction.
Why Trust AirGreen for Your HVAC Installation
Our expertise is based on:
- Years of experience in central heat pumps
- In-depth knowledge of products like the MIDEA EVOX G3
- A transparent and professional approach
We offer:
- Free on-site evaluation
- Turnkey installation
- Fast and efficient after-sales service
Conclusion: A Durable and Smart Installation in Delson
The installation of this MIDEA EVOX G3 central heat pump in Delson demonstrates that a well-designed and well-installed system can completely transform a home's comfort.
Between cold climate performance, energy efficiency, quiet operation, and reliability, this model stands out as a choice solution for residents of the South Shore, Montreal, Laval, and Longueuil.
At AirGreen, we continue to support our clients with adapted, durable, and high-performance HVAC solutions, perfectly aligned with the realities of the Quebec market.
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.
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.
Every house has its constraints. We see them before we install.
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).