Installation of a 3-ton MIDEA EVOX G3 central heat pump in Terrebonne: optimal performance for four-season comfort
Discover our installation of a 3-ton MIDEA EVOX G3 central heat pump in Terrebonne: energy efficiency, optimal comfort, and AirGreen's HVAC expertise.
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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 High-Performance Central HVAC Solution Adapted to Terrebonne's Realities
At AirGreen, we recently completed a full HVAC installation in Terrebonne, showcasing the power and reliability of the MIDEA EVOX G3 3-ton central heat pump. This project perfectly illustrates how a well-designed solution can transform a residence's indoor comfort while optimizing energy consumption, even in Quebec's demanding climate conditions.
Located in a quiet residential area of Terrebonne, the property presented typical challenges: limited space for the outdoor unit, a need for stable performance in winter, and the owner's desire to replace an old energy-intensive system. Our mandate was clear: propose a durable, efficient, and perfectly integrated solution into the existing environment.
Why the MIDEA EVOX G3 is a Strategic Choice for Terrebonne and the North Shore
Exceptional Performance in Cold Climates
The MIDEA EVOX G3 central heat pump stands out for its ability to maintain stable heating performance down to -30°C, making it an ideal choice for residences in Terrebonne, Laval, and the entire North Shore. Thanks to its advanced Inverter compressor technology and M-Power system, it ensures constant warmth, even during intense cold snaps.
In this specific project, the client wanted to eliminate temperature variations between floors. After installation, we observed homogeneous distribution of warm air, eliminating previously problematic cold spots.
Energy Efficiency and Advantageous Subsidies
This model boasts solid performance:
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- ENERGY STAR® Cold Climate Certification
Furthermore, this installation is eligible for a LogisVert grant of up to $3720, representing a major financial leverage for homeowners looking to modernize their HVAC system in Terrebonne or on the South Shore and in Montreal.
Eco-friendly Refrigerant and Advanced Technology
The MIDEA EVOX G3 uses R-454B refrigerant, known for its low global warming potential (GWP). This technological choice is part of a responsible approach, increasingly sought after by owners concerned about their environmental impact.
Detailed Installation Process in Terrebonne
Initial Analysis and Planning
Before any intervention, our team conducted a complete on-site evaluation:
- Inspection of existing ducts
- Accurate calculation of heating load
- Verification of electrical capacity (220V required)
- Identification of the optimal location for the outdoor unit
In this specific case, outdoor space was limited, adjacent to an access door. We therefore opted for an installation on elevated wall mounts to:
- Protect the unit from snow accumulation
- Optimize air circulation
- Minimize vibrations and noise
Outdoor Unit Installation
The outdoor unit (model MO1SE-H36B-2A) was installed with precision:
- Solid mounting on metal supports
- Perfect leveling to ensure proper compressor operation
- Connection of refrigerant piping (3/8 - 3/4)
- Complete insulation of lines to prevent heat loss
A critical point in this installation was the aesthetic management of the ducts. We integrated a discreet line cover to preserve the house's exterior appearance.
Indoor Unit Installation
The indoor unit (model MAUSE-H36B-2A) was installed in a confined technical space. Thanks to its compact vertical design, we were able to:
- Maximize available space
- Facilitate access for future maintenance
- Ensure optimal connection to existing ducts
We also integrated a high-efficiency filter compatible with MERV 13, significantly improving indoor air quality.
Challenges Encountered and AirGreen Solutions
Outdoor Space Constraints
Installation near a door required particular attention:
- Minimum distance respected for ventilation
- Strategic orientation of the fan
- Protection against water splashes and ice accumulation
Drainage Management
We designed an efficient drainage system to prevent water accumulation under the unit, a common problem in poorly planned installations.
Noise Optimization
With an outdoor sound level of 62.5 dB(A), we took care to adjust the supports and alignment to reduce any vibration transmitted to the structure.
Tangible Results for the Client
After commissioning, the results were immediate:
- Constant thermal comfort throughout the house
- Significant reduction in energy costs
- Silent operation, both indoors and outdoors
- Smart control via integrated WiFi
The client particularly appreciated the system's stability during the first cold nights, confirming the reliability of the central heat pump.
Practical Tips for a Successful Installation
Choosing the Right Capacity
A 3-ton (36,000 BTU) unit is generally suitable for:
- Medium to large single-family homes
- Well-insulated properties
- Existing forced-air systems
Incorrect sizing can lead to:
- Excessive energy consumption
- Premature wear
- Insufficient comfort
Do Not Neglect Installation
Even the best machine will lose efficiency if the installation is poorly done. At AirGreen, we emphasize:
- Rigorous vacuuming
- Pressure tests
- Airflow verification
- System calibration
Consider HVAC Maintenance
To maintain performance:
- Filter cleaning every 3 months
- Annual inspection
- Checking electrical connections
Recognized Expertise in Montreal, Laval, Longueuil, and on the North Shore
This project in Terrebonne is part of our extensive experience in HVAC installation in the greater Montreal area, including Laval, Longueuil, the North Shore, and the South Shore. Each installation is unique, and our personalized approach guarantees lasting and efficient results.
We have already installed several MIDEA EVOX G3 systems in various contexts:
- Single-family homes
- Duplexes and triplexes
- Renovation properties
The feedback is consistent: reliability, comfort, and energy savings.
Conclusion: A Strategic and Sustainable HVAC Installation
The installation of this MIDEA EVOX G3 central heat pump in Terrebonne demonstrates that a judicious technological choice, combined with rigorous execution, allows for achieving a superior level of comfort while controlling energy costs.
At AirGreen, we apply our expertise to every project, taking into account the specific realities of each home. This approach guarantees efficient, durable installations adapted to Quebec winters.
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).