Installation of a MIDEA EVOX G3 3-ton central heat pump in Boisbriand on the North Shore
HVAC installation in Boisbriand of a 3-ton MIDEA EVOX G3 central heat pump. Performance at -30°C, LogisVert subsidy, optimal comfort on the North Shore.
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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 Strategic HVAC Installation to Combat Boisbriand's Harsh Winters
At AirGreen, we recently completed a comprehensive HVAC installation in Boisbriand, on the North Shore, featuring a MIDEA EVOX G3 3-ton (36,000 BTU) central heat pump. This project perfectly illustrates our approach: rigorous technical execution, a deep understanding of customer needs, and equipment selection tailored to Quebec's climatic realities.
The client, owner of a single-family home built in the 2000s, wanted to replace an old, inefficient, energy-consuming, and noisy central system. The objective was clear: improve thermal comfort, reduce energy costs, and benefit from available subsidies, notably the LogisVert program.
A Central System Designed for Cold Climate Performance
Technical Specifications of the Installed MIDEA EVOX G3
The MIDEA EVOX G3 | 3-ton central heat pump we installed stands out for its specifications particularly suited to the climate of Montreal, Laval, and the North Shore:
- Cooling Capacity: 36,000 BTU
- Heating Capacity down to -30°C
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- ENERGY STAR® Certification (Cold Climate)
- Eco-friendly R-454B Refrigerant
- Integrated WiFi
- Voltage: 220V
- Piping: 3/8 – 3/4
- AHRI: 215471343
This model is renowned for its thermal stability, even during periods of intense cold. Unlike some systems that lose efficiency below -20°C, the EVOX G3 maintains consistent performance, reducing the need for auxiliary heating.
A Significant Subsidy Not to Be Overlooked
For this project in Boisbriand, the client was able to benefit from a LogisVert subsidy of $3,720, which significantly improved the return on investment. At AirGreen, we systematically assist our clients in the steps to maximize these financial aids.
Technical Challenges Encountered During Installation
Restricted Access and Complex Duct Configuration
One of the main challenges of this installation concerned access to the existing central system. The indoor unit had to be installed in a relatively narrow mechanical space, with ducts already in place but requiring adjustments.
We had to:
- Adapt connections without compromising airflow
- Optimize duct alignment to avoid pressure losses
- Install anti-vibration supports to reduce noise
Thanks to our expertise in central heat pump installation, we were able to turn this constraint into an advantage by improving overall air circulation in the house.
Refrigerant Line Management and Outdoor Protection
As seen in the project image, the outdoor unit was installed with meticulous attention to detail:
- Complete insulation of refrigerant lines
- Mechanical protection with robust casing
- Installation of a standard-compliant electrical disconnect
- Strategic positioning to minimize noise and maximize efficiency
We also performed a complete vacuum pull with micron test, ensuring the total absence of moisture in the system — a crucial step often overlooked by less rigorous installers.
Why This Choice Was Optimal for This Client
An Intelligent Replacement of an Aging System
The previous system was still functional, but at a very low efficiency. The client observed:
- High electricity bills
- Uneven heat distribution
- Excessive noise
With the MIDEA EVOX G3, these problems were eliminated from the first days of use.
Inverter Technology for Constant Comfort
Inverter technology allows real-time adjustment of compressor power. The result:
- Stable temperature
- Fewer on/off cycles
- Reduced energy consumption
In this Boisbriand home, this translated into a much more uniform sense of comfort, without unpleasant fluctuations.
Client Feedback After Installation
A few weeks after commissioning, the client shared their experience with us:
- Immediately improved comfort
- Remarkable quietness of the outdoor unit
- Easy control via the WiFi application
- Significant reduction in energy consumption
This type of feedback is common with the MIDEA EVOX G3 heat pump, which we have already installed multiple times in Laval, Longueuil, and Montreal.
Best Practices and Tips for a Successful Installation
What We Always Recommend
To guarantee the longevity and performance of a system like this, we emphasize several essential points:
- Always perform an accurate sizing (load calculation)
- Never neglect vacuum pulling and pressure tests
- Ensure good duct insulation
- Install high-performance filters (MERV 13 recommended)
Mistakes to Avoid
- Installing an oversized or undersized heat pump
- Reusing old ducts without inspection
- Neglecting annual maintenance
At AirGreen, every HVAC installation in Montreal, Laval, or on the North Shore is carried out according to strict, uncompromising standards.
A Sustainable Solution for Quebec Homes
The MIDEA EVOX G3 central heat pump represents a wise choice for homeowners wishing to:
- Reduce their carbon footprint
- Benefit from a reliable long-term system
- Take advantage of government subsidies
- Improve their comfort in summer and winter
In a context where energy costs are rising, investing in a high-performance system becomes a strategic decision.
AirGreen's Expertise: More Than Just an Installation
This project in Boisbriand reflects our commitment to offer:
- A free and accurate evaluation
- A professional, uncompromising installation
- Responsive after-sales service
- Complete price transparency
Our teams operate throughout Montreal, Laval, Longueuil, the North Shore, and the South Shore, with recognized expertise in central heat pumps.
Conclusion: An Installation That Makes a Difference
The installation of this MIDEA EVOX G3 central heat pump in Boisbriand demonstrates that a well-executed project can completely transform the comfort of a home. Thanks to advanced technology, rigorous installation, and comprehensive support, the client now benefits from a reliable, high-performance, and economical system.
At AirGreen, we continue to raise the standards of HVAC installation in Quebec, one project at a time.
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).