Installation of a MIDEA EVOX G3 3-ton central heat pump in Blainville (North Shore)
AirGreen Project in Blainville: installation of a MIDEA EVOX G3 3-ton central heat pump. Winter performance, energy efficiency, and superior comfort on the North 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.
An efficient HVAC solution perfectly adapted to the climate realities of the North Shore
At AirGreen, every HVAC installation project is an opportunity to demonstrate our rigor, our field expertise, and our ability to adapt the best technologies to the real needs of Quebec residences. This recent installation of a MIDEA EVOX G3 central heat pump in Blainville perfectly illustrates our approach: technical precision, energy optimization, and attention to detail at every step.
The client, owner of a single-family home on the North Shore, wanted to replace an old, aging central system that had become inefficient during periods of extreme cold. Their objective was clear: to obtain a reliable, quiet solution, capable of maintaining a stable temperature even in harsh winters, while reducing their energy bill.
A central installation designed for year-round comfort
Initial analysis and specific project challenges
From our first visit to Blainville, we conducted a complete evaluation of the existing system:
- Inspection of ventilation ducts
- Analysis of the building's thermal capacity
- Verification of insulation and heat loss
- Study of the optimal location for the outdoor unit
One of the main challenges of this installation concerned the restricted space around the exterior foundation, as visible in the photo. The unit had to be installed on a robust wall bracket to:
- Prevent snow accumulation in winter
- Reduce vibrations transmitted to the building
- Optimize air circulation around the appliance
Thanks to our expertise in central heat pump installation in Montreal, Laval, and the North Shore, we quickly proposed a stable, durable solution that complies with best practices.
Model selection: MIDEA EVOX G3 3 tons
The choice of the MIDEA EVOX G3 central heat pump was a natural fit due to its advanced technical characteristics:
- Cooling capacity: 36,000 BTU
- Heating performance down to -30°C
- SEER2: 17.7
- HSPF2: 10.0
- ENERGY STAR® Cold Climate Certification
- Ecological refrigerant R-454B
- Integrated WiFi for smart control
This model is particularly suitable for properties in Blainville and the North Shore, where temperature variations are frequent and sometimes extreme.
Installation process: AirGreen's rigor and precision
Preparation and installation of the outdoor unit
The outdoor unit was installed on a raised wall mount, securely attached to the building structure. This technical choice offers several advantages:
- Protection against snow and ice
- Improved system durability
- Easy access for HVAC maintenance
We also paid particular attention to:
- Perfect unit alignment
- Vibration absorption
- Compliance with recommended clearance distances
Piping and wiring management
To ensure optimal performance, we carried out:
- Careful installation of refrigerant lines (3/8 - 3/4)
- Complete insulation to prevent any energy loss
- Discreet routing of lines to preserve the exterior aesthetic
A critical point often overlooked by other installers is vacuum testing (micron test). At AirGreen, we systematically perform:
- A stable deep vacuum
- A complete leak check
- Total elimination of moisture in the circuit
This prevents micro-leaks and ensures the longevity of the system.
Indoor unit installation
The indoor unit (air handler) was installed in the existing technical space, with:
- Perfect integration with ducts
- Airflow optimization thanks to Constant Airflow 2.0 technology
- Compatibility with high-efficiency filters (MERV 13)
Result: uniform heat distribution throughout the house.
Concrete results for the client
Upon commissioning, the benefits were immediate:
Improved thermal comfort
- Stable temperature throughout the house
- Reduced temperature differences between floors
- Efficient heating even on very cold nights
Noise reduction
- Controlled outdoor sound level (62.5 dB(A))
- Virtually imperceptible indoor operation
Energy savings
Thanks to Inverter technology, the system continuously adjusts its power:
- Fewer on/off cycles
- Optimized electricity consumption
- Significant reduction in the monthly bill
Available subsidy: a major financial advantage
For this installation in Blainville, the client benefited from the LogisVert subsidy, which could reach approximately $3,720 (according to recent updates).
At AirGreen, we systematically assist our clients with:
- Eligibility verification
- Document preparation
- Application submission
This greatly simplifies the process and maximizes savings.
Practical advice for homeowners
What to avoid when installing a central heat pump
- Choosing an unsuitable capacity (too low or excessive)
- Neglecting the quality of the installation
- Ignoring the importance of vacuum testing
- Installing the outdoor unit too close to the ground
Recommended best practices
- Hiring a certified and experienced contractor
- Checking ENERGY STAR® certifications
- Opting for a system adapted to Quebec's climate
- Planning annual HVAC maintenance
Why choose AirGreen for your HVAC installation in Blainville, Laval, or Montreal
Our approach is based on simple but essential principles:
Advanced technical expertise
Our refrigeration technicians master complex installations, whether for:
- Single-family homes
- Duplexes and triplexes
- Multi-unit properties
Total transparency
- Detailed quotes
- No hidden costs
- Payment only when the client is satisfied
Reliable after-sales service
- Fast support
- Personalized follow-up
- Adapted maintenance options
An installation that reflects our quality standard
This MIDEA EVOX G3 central heat pump installation in Blainville clearly demonstrates the importance of professional execution. Every detail matters: from the positioning of the outdoor unit to the calibration of the indoor airflow.
The client now benefits from:
- Year-round consistent comfort
- A durable and efficient system
- An energy-optimized solution for Quebec winters
At AirGreen, we continue to carry out similar installations throughout Montreal, Laval, Longueuil, the North Shore, and the South Shore, with the same level of demanding standards.
Conclusion: a strategic choice for the future
Investing in a MIDEA EVOX G3 central heat pump represents much more than a simple equipment replacement. It is a thoughtful decision aimed at:
- Reducing energy costs
- Improving indoor comfort
- Increasing property value
For any HVAC installation in Blainville or elsewhere in the greater Montreal area, our team remains a reliable, experienced, and results-oriented reference.
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.
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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).