Installation of a MIDEA EVOX G3 3-ton central heat pump in Pont-Viau (Laval): performance, precision, and custom adaptation
Installation of a MIDEA EVOX G3 3-ton central heat pump in Pont-Viau Laval: optimal comfort, energy savings, advanced technology, and AirGreen's HVAC expertise.
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 Strategic HVAC Installation in the Heart of Pont-Viau: Optimizing Comfort and Efficiency Year-Round
At AirGreen, every HVAC installation project is an opportunity to showcase our technical expertise and our ability to adapt high-performance solutions to the realities of homes in Laval and the North Shore. This recent installation of a MIDEA EVOX G3 3-ton central heat pump in Pont-Viau perfectly illustrates our approach: rigorous analysis, precise execution, and measurable results in terms of comfort and energy savings.
The client, owner of a bungalow built in the 1980s, wanted to replace an old combined system (electric furnace + aging central air conditioner). Their objectives were clear: reduce energy consumption, achieve stable heat even in harsh winters, and improve indoor air quality.
Why the MIDEA EVOX G3 is a logical choice in the Laval context
A central heat pump designed for Quebec winters
The MIDEA EVOX G3 central heat pump installed in this Pont-Viau residence stands out for its performance adapted to Quebec's extreme climatic conditions:
- Heating capacity down to -30°C
- Maintained performance even during cold snaps
- Inverter technology for intelligent modulation
- ENERGY STAR® Cold Climate Certification
With a capacity of 36,000 BTU (3 tons), this unit was perfectly sized for the house's surface area and existing ductwork.
Key technical data of the installation
- Outdoor model: MO1SE-H36B-2A
- Indoor model: MAUSE-H36B-2A
- SEER2: 17.7
- HSPF2: 10.0
- EER2: 12.0
- Refrigerant: R-454B (low environmental impact)
- Outdoor sound level: 62.5 dB(A)
- Integrated WiFi: Yes
- Voltage: 220V
- Piping: 3/8 – 3/4
This combination ensures high energy efficiency and an excellent return on investment, particularly with the LogisVert grant that can reach $3720.
Technical challenges encountered during the installation in Pont-Viau
1. Restricted mechanical space in the basement
The main challenge of this installation lay in the narrow mechanical room. The old system occupied a lot of space, and access was limited.
AirGreen Solution:
Thanks to the MIDEA EVOX G3's modular "Block N Lock" design, we were able to:
- Disassemble certain sections to facilitate entry
- Optimize vertical layout
- Maintain easy access for future HVAC maintenance
2. Adaptation of existing ductwork
The original ducts showed pressure losses and uneven air distribution.
Intervention:
- Complete rebalancing of the network
- Plenum adjustment
- Airflow optimization via the Computational Constant Airflow 2.0 system
Result: uniform distribution in all rooms, with no cold or overheated areas.
3. Outdoor installation on a wall bracket
As seen in the project, the outdoor unit was installed on a robust wall bracket, slightly elevated.
Advantages:
- Protection against snow and ice
- Reduced vibrations
- Better equipment durability
Full installation process by AirGreen
In-depth technical evaluation
Before any installation, we performed:
- Precise thermal load calculation
- Duct inspection
- Electrical panel verification (220V compatibility)
- Client needs analysis
Professional step-by-step installation
- Removal of the old system
- Installation of the indoor unit
- Installation of the outdoor unit on a wall bracket
- Refrigeration connection (vacuum pull with micron test)
- Secure electrical connections
- Commissioning and calibration
Each step was executed according to the strictest standards in the HVAC industry in Montreal and Laval.
Concrete results for the client
Significantly improved thermal comfort
From the first days of use:
- Stable temperature throughout the house
- Reduced temperature differences between rooms
- Softer and more uniform heating
Reduced energy consumption
Thanks to Inverter technology and high efficiency:
- Noticeable decrease in monthly costs
- Optimized operation according to actual demand
Improved air quality
Compatibility with MERV 13 filters allows for:
- Allergen capture
- Dust reduction
- Healthier indoor air
Practical advice for homeowners in Laval and the North Shore
How to choose a central heat pump
Avoid common mistakes:
- Undersizing or oversizing the unit
- Neglecting the condition of the ducts
- Choosing solely based on price
A professional evaluation is essential to guarantee performance and durability.
Importance of certified installation
Even the best heat pump will lose efficiency if:
- The vacuum pull is poorly done
- Connections are not optimal
- Airflow is poorly balanced
At AirGreen, every installation is carried out by certified refrigeration technicians, with rigorous quality control.
Feedback: a typical AirGreen installation in Laval
This project in Pont-Viau reflects several similar interventions we have carried out in Montreal, Laval, Longueuil, North Shore, and South Shore:
- Replacement of aging systems
- Energy optimization
- Quick installation (often in one day)
- High customer satisfaction
The owner confirmed to us after a few weeks:
- Constant comfort without frequent adjustments
- Appreciable quiet operation
- Easy control via WiFi
Why choose AirGreen for your HVAC installation
Recognized local expertise
We operate daily in:
- Montreal
- Laval
- Longueuil
- North Shore
- South Shore
We perfectly understand the climatic requirements and realities of local homes.
Transparency and quality
- Detailed quotes
- No hidden costs
- Payment only upon satisfaction
Reliable after-sales service
- Quick support
- HVAC maintenance available
- Personalized follow-up
Conclusion: A sustainable and high-performance solution for Pont-Viau
The installation of this MIDEA EVOX G3 central heat pump in Pont-Viau represents a significant improvement in terms of comfort, energy efficiency, and sustainability. This type of system is now an essential solution for homeowners wishing to modernize their HVAC installation in Laval.
At AirGreen, we continue to offer precise, adapted, and high-performance installations, with particular attention to the technical details that make all the difference.
How it goes, from the first call to the end
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 the unit delivers when it is cold
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.
And 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.
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.
Which type of equipment for your project?
Pick what looks like your need.
Four mistakes we do not make
Flip each card to see what we do instead.
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.
Useful pages for what comes next
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.
Tell us about your house. We come and see it for free.
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).