Installation of a MIDEA EVOX G3 3 Ton Central Heat Pump in Chomedey, Laval
HVAC installation in Laval of a MIDEA EVOX G3 3-ton central heat pump. Optimal comfort, energy savings, available subsidies, and recognized AirGreen 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
Strategic HVAC Modernization for Consistent All-Season Comfort
In the residential sector of Chomedey in Laval, we recently completed a full HVAC installation of a MIDEA EVOX G3 3-ton central heat pump in a single-family home built in the 1990s. The owner wanted to replace an old, inefficient system combining an electric furnace and an aging central air conditioner, which had become expensive to operate and unable to maintain a stable temperature.
At AirGreen, we managed the entire project, from initial assessment to final commissioning, including optimizing the existing ducts. This project perfectly illustrates our approach: technical precision, energy efficiency, and adaptation to the climatic realities of Greater Montreal, Laval, and the North Shore.
Why the MIDEA EVOX G3 Was the Ideal Choice for This Residence
Perfectly Adapted Power: 36,000 BTU (3 tons)
After a complete thermal analysis of the building (area, insulation, orientation, air volume), we determined that a capacity of 36,000 BTU was ideal to ensure:
- Homogeneous heat distribution
- Rapid cooling in summer
- Stable performance even during cold snaps
Guaranteed Performance Down to -30°C
One of the decisive criteria for this client was winter reliability. The MIDEA EVOX G3 stands out for:
- Heating capacity down to -30°C
- Performance maintained at -25°C without major loss
- Inverter technology allowing intelligent modulation
Result: consistent heat, without abrupt cycles or discomfort.
Technical Challenges Encountered During Installation in Chomedey
Restricted Access to the Outdoor Location
The outdoor unit had to be installed on a narrow side of the house, with:
- Limited clearance
- Proximity to the foundation
- Optimized drainage
AirGreen Solution:
- Installation on a raised aluminum support
- Precise leveling to avoid vibrations
- Optimized drainage to prevent water accumulation
Reuse of Existing Ducts
The duct system was functional but required adjustments:
- Complete cleaning
- Sealing of joints
- Airflow verification
We also validated compatibility with the Computational Constant Airflow 2.0 system, ensuring optimal air circulation.
Complete Technical Details of the Installed MIDEA EVOX G3
- Capacity: 3 tons (36,000 BTU)
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- Refrigerant: R-454B (low environmental impact)
- Voltage: 220V
- Outdoor sound level: 62.5 dB(A)
- WiFi: Included
- Piping: 3/8 – 3/4
Certification and Energy Efficiency
- ENERGY STAR® certified
- Cold Climate ENERGY STAR® recognition
This type of performance is particularly sought after by homeowners in Laval, Montreal, and the South Shore, who are keen to reduce their energy consumption.
Available Grant: A Major Financial Advantage
For this installation in Chomedey, the client benefited from the LogisVert grant:
- Amount: up to $3,720
- Simple process with invoice provided
- Full assistance from our team
At AirGreen, we systematically support our clients in these procedures to maximize their return on investment.
Full Installation Process
1. On-site Evaluation
We analyzed:
- The condition of the existing system
- The duct configuration
- Specific thermal needs
2. Site Preparation
- Protection of work areas
- Planning for piping routes
- Electrical preparation
3. Outdoor Unit Installation
- Mounting on a stable support
- Refrigerant connection
- Pressure verification
4. Indoor Unit Installation
- Optimal positioning in the mechanical room
- Duct connection
- Airflow calibration
5. Commissioning and Testing
- Vacuum test (micron test)
- Performance verification
- WiFi and thermostat configuration
Concrete Results for the Client
From the very first days of use, the client observed:
- A noticeable reduction in energy costs
- A stable temperature in all rooms
- Quiet operation
- Improved air quality
After a few weeks, the feedback was clear: the overall comfort of the home had been transformed.
Practical Advice for Homeowners in Laval and Montreal
Choosing the Right Capacity
An undersized heat pump leads to:
- Overconsumption
- Premature wear
- Thermal discomfort
Always perform a professional analysis.
Don't Neglect the Ducts
Even the best machine will not perform without:
- Sealed ducts
- Balanced airflow
Consider HVAC Maintenance
To maximize lifespan:
- Annual cleaning
- Filter check (MERV 13 recommended)
- Professional inspection
Why Choose AirGreen for Your HVAC Installation
At AirGreen, we distinguish ourselves by:
- Real expertise in central heat pump installation
- In-depth knowledge of the climatic realities of Montreal, Laval, Longueuil, North Shore, and South Shore
- Total transparency in our quotes
- Fast and reliable after-sales service
Every project is handled with rigor, precision, and attention to detail.
A Sustainable Investment for Your Comfort
Installing a MIDEA EVOX G3 central heat pump represents much more than just equipment replacement:
- Reduced energy costs
- Improved comfort
- Property value enhancement
- Reduced environmental footprint
For homeowners in Chomedey, Laval, and the surrounding areas, it's a perfectly adapted solution for Quebec winters.
Conclusion
This installation in Chomedey clearly demonstrates that a well-chosen and correctly installed system can transform the comfort of a home. The MIDEA EVOX G3 3-ton emerges as a reliable, high-performance, and durable solution for Quebec residences.
At AirGreen, we continue to support our clients with tailor-made solutions, adapted to their real needs and the demands of the local climate.
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).