Installation of a GREE LIVO R32 Wall-Mounted Heat Pump – Mini Split Air Conditioner in Saint-Laurent, Montreal
AirGreen installs a GREE LIVO R32 wall-mounted heat pump in Saint-Laurent: mini split Inverter, outdoor unit on wall mounts, clean finish on brick, and reliable HVAC comfort.
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.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
A neat outdoor installation on a brick facade in a confined urban space
This HVAC installation in Saint-Laurent, in the borough of Montreal, highlights a detail that our clients often notice after the work: a good wall-mounted heat pump installation is not judged solely by the indoor unit. The outdoor unit, its location, its supports, the routing of refrigerant lines, the electrical supply, and the visual finish all play an equally important role in the system’s durability and the building’s final appearance.
For this project, our AirGreen team installed a GREE LIVO R32, a wall-mounted heat pump – air conditioner – mini split with Inverter technology, designed to provide efficient cooling comfort and reliable supplementary heating according to the residence’s needs. The photo clearly shows the outdoor unit installed on sturdy wall mounts, directly on a red brick facade typical of several residential buildings in Saint-Laurent. The available space was limited by the window, the side wall, the concrete foundation, and the narrow configuration of the inner courtyard.
In this type of project, the challenge is not just to install a machine. Access must be preserved, technical clearances respected, vibrations limited, piping protected, electrical supply ensured to be compliant, and a clean finish produced on a visible facade. This is precisely where the experience of a team specialized in HVAC installation becomes essential.
An outdoor location chosen to combine performance, safety, and discretion
The outdoor unit of the GREE LIVO R32 was installed under a large window, at a sufficient height to protect it from ground accumulations, while maintaining reasonable access for maintenance. Wall mounts help free up space at ground level, which is especially useful in narrow yards, service entrances, small side passages, and the rear facades of duplexes or multi-family buildings in Montreal.
Wall-mounted installation offers several advantages when the building allows it:
- it keeps the outdoor unit above snow, ice, and debris;
- it limits ground clutter;
- it facilitates drainage around the device;
- it reduces the risk of accidental displacement;
- it allows for a more compact integration in tight spaces.
In this case, the device is mounted on an existing brick surface. Our technicians therefore paid particular attention to the choice of anchor points, the stability of the supports, and the reduction of vibrations. A poorly fixed outdoor unit can transmit unpleasant noise to the building, especially on a masonry facade. A professional installation must take into account the wall structure, the device’s weight, the effect of defrost cycles, and the winter conditions specific to the Quebec climate.
An exterior finish that respects the building’s architecture
An important element visible in the photo is the vertical protection of the pipes, installed in a color that harmonizes with the brick and existing metal elements. This detail may seem secondary, but it strongly influences the final result. In many wall-mounted heat pump projects in Montreal, the exterior finish is what distinguishes an ordinary installation from truly careful work.
The refrigerant lines, communication cable, and drain must be protected against weather, UV rays, shocks, and normal wear. In this project in Saint-Laurent, the vertical path was organized to remain clean, readable, and well aligned with the wall’s architecture. The goal was to avoid a disorderly route while maintaining an adequate slope for drainage and reliable protection of connections.
At AirGreen, we always plan the routing of pipes before drilling. This step avoids improvised corrections and allows for a cleaner installation. A brick facade also requires careful execution: clean drilling, proper sealing, protection against infiltration, and respect for exit points.
The GREE LIVO R32: a mini split solution well suited for residences in Saint-Laurent
The GREE LIVO R32 is a wall-mounted system appreciated for residential projects where a simple-to-use, efficient device well suited to daily needs is sought. Thanks to its Inverter technology, the compressor modulates its power according to actual demand, which avoids the constant stopping and restarting of a traditional system. This modulation contributes to better comfort, a more stable temperature, and more controlled consumption.
The refrigerant R32 is also an important element of this generation of wall systems. It is used in many recent devices for its good thermal performance and improved environmental profile compared to some older refrigerants. For a homeowner in Saint-Laurent, this type of device represents a relevant option when adding air conditioning to a specific area of the house, improving comfort during heatwaves, or providing supplemental heating during intermediate seasons.
The capacity in BTU must always be selected according to the actual thermal load of the space served. In this project, sizing was evaluated based on several factors: area to be treated, insulation, sun exposure, number of windows, ceiling height, air circulation, and usage habits. An undersized GREE LIVO R32 would have worked nonstop during hot days; an oversized unit might have cooled too quickly without properly dehumidifying. The right balance is essential.
Why sizing is as important as installation
A mini split wall air conditioner works best when properly sized. Many homeowners first compare brands and prices, but the chosen capacity directly affects the final comfort. In homes in Montreal, Laval, Longueuil, the North Shore, and the South Shore, two rooms of the same size can have very different needs. A south-facing room with large windows does not require the same output as a shaded, well-insulated room.
Good sizing takes into account the reality of the building, not just an approximate rule. That’s why our team takes the time to assess the full context before recommending a system. For the GREE LIVO R32 installed here, the goals were clear: improve comfort, keep a compact installation, and ensure reliable operation in a limited outdoor environment.
A well-positioned and accessible electrical supply
In the photo, the presence of an outdoor electrical box near the unit is also noticeable. This part of the project is fundamental. A HVAC installation that complies must include a safe, accessible electrical connection adapted to the manufacturer's requirements. The outdoor unit must be able to be isolated for maintenance, and the cables must be properly protected.
In an existing building in Saint-Laurent, electrical integration may require more precise planning than in new construction. It is necessary to work with existing routes, facade materials, available clearances, and electrical panel constraints. Our teams coordinate these elements to ensure a reliable and clean installation without compromising safety or aesthetics.
Challenges specific to backyards and narrow urban spaces
This installation illustrates a common situation in the dense residential areas of Montreal: a narrow backyard or side yard, bordered by brick walls, with little room for mechanical equipment. In this type of environment, the positioning of the outdoor unit must take several practical elements into account.
Air circulation around the unit
The outdoor unit must be able to properly exhaust air. If it is stuck too close to a wall, fence, or obstacle, its performance may decrease. Our technicians check the clearances before securing the device to allow good condenser ventilation.
Noise and vibrations
Even though modern Inverter devices are generally quieter, the installation must reduce vibration transmission to the building. The supports, anchors, and balance of the unit are therefore carefully checked.
Access for HVAC maintenance
A unit installed too high, too tight, or too close to an obstacle can become difficult to maintain. In this project, the device remains visible and accessible for inspections, cleaning, and seasonal checks.
Protection of refrigeration lines
The pipes must be protected along their entire outer length. A clean and well-installed sheath improves the appearance of the project and protects the essential components of the system.
The result: a clean, durable GREE LIVO R32 installation adapted to Saint-Laurent
The final result is a stable, compact outdoor installation well integrated into the brick facade. The GREE LIVO R32 wall-mounted heat pump is positioned to respect the building constraints while maintaining the conditions necessary for proper operation. The wall brackets lift the device off the ground, the vertical protection of the pipes ensures a neat finish, and the outdoor electrical supply remains accessible for maintenance.
What the client gains daily
For the client, the benefits are concrete. The system allows better control of indoor temperature, efficient air conditioning during summer, and convenient supplementary heating as needed. Inverter technology helps the device adjust its operation rather than constantly working at full capacity. This modulation contributes to comfort and a more pleasant daily use.
In a sector like Saint-Laurent, where there are single-family homes, plexes, condos, and older residential buildings, this type of mini split solution is often very relevant. It allows adding comfort without transforming the entire mechanical network of the house. For many homeowners, a wall-mounted heat pump represents an effective solution when installing a central system is not necessary or practical.
Subsidies and potential eligibility
Eligibility for a subsidy always depends on the exact installed combination, the AHRI number, capacity, certified performance, and the criteria in effect at the time of the application. A GREE LIVO R32 can be part of an energy improvement process when it meets the applicable requirements. At AirGreen, we help our clients understand the documents to keep, the information to verify, and the steps to follow after installation.
It is important not to assume eligibility based solely on the model name. Two systems from the same range can have different characteristics depending on the BTU capacity and the indoor-outdoor combination. Serious validation avoids unpleasant surprises.
Practical tips to extend the system's lifespan
After installation, a few simple steps help maintain the performance of the GREE heat pump:
- clean the indoor unit filters according to usage;
- keep the outdoor unit clear;
- avoid leaning objects against the condenser;
- check that nothing is blocking the air outlet;
- request periodic professional HVAC maintenance;
- monitor any unusual changes in noise, smell, or performance.
A well-installed and well-maintained system generally maintains a better level of comfort and efficiency. This is especially true in Quebec, where outdoor units face snow, rain, frost, defrost cycles, and significant temperature variations.
The AirGreen advantage for installations in Montreal and surrounding areas
AirGreen carries out installations of wall-mounted heat pumps, wall-mounted air conditioners, multi-zone systems, and residential HVAC solutions in Montreal, Laval, Longueuil, on the North Shore and on the South Shore. Each building has its own constraints: brick facade, narrow yard, condominium, uneven foundation, limited space, distant electrical panel, or specific client requirements.
Our approach is based on detailed planning and clean execution. For this installation in Saint-Laurent, the result confirms the importance of these decisions: the outdoor unit is well supported, the pipes are protected, the visual integration is neat, and the whole system is designed to operate reliably.
A successful HVAC installation is not just about plugging in a device. It requires an understanding of the building, proper system selection, precise installation, and full commissioning. This GREE LIVO R32 installed in Saint-Laurent is an excellent example: a compact, clean project well suited to the reality of Montreal homes.
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 |
|---|---|---|---|---|---|---|---|
| Gree Livo R32 9 000 (115 V) | 10,000 | 7,600 | −25 °C: 5,700 | 1.86 | 20.5 | 8.8 | – |
| Gree Livo R32 9 000 | 9,600 | 7,600 | −25 °C: 5,500 | 1.94 | 20.5 | 8.8 | – |
| Gree Livo R32 12 000 (115 V) | 9,700 | 8,500 | −25 °C: 6,500 | 1.75 | 19.0 | 8.5 | – |
| Gree Livo R32 12 000 | 9,700 | 9,100 | −25 °C: 6,500 | 1.8 | 19.0 | 8.5 | $1,164 |
| Gree Livo R32 18 000 | 15,300 | 12,100 | −25 °C: 10,200 | 1.85 | 20.0 | 8.5 | $1,836 |
| Gree Livo R32 24 000 | 19,200 | 15,700 | −25 °C: 10,500 | 1.75 | 19.0 | 8.5 | $2,304 |
| Gree Livo R32 30 000 | 24,000 | 23,000 | −25 °C: 16,900 | 1.8 | 22.0 | 9.0 | $2,880 |
| Gree Livo R32 36 000 | 27,400 | 24,600 | −25 °C: 21,000 | 1.8 | 21.0 | 8.5 | $3,288 |
According to NEEP, it delivers 10,000 BTU/h at −8 °C (17 °F), as much as at 8 °C. It heats as hard in moderate cold as in mild weather.
According to NEEP, its certified maximum capacity at −25 °C (−13 °F) is 5,700 BTU/h, 63% of its nominal 9,000 BTU size.
At 8 °C, its certified maximum capacity reaches 13,300 BTU/h, 48% more than its nominal 9,000 BTU size.
According to NEEP, its COP at −15 °C is 1.94: the highest of the Livo R32 line, which ranges from 1.75 to 1.86 at that temperature.
According to NEEP, its certified maximum capacity at −25 °C (−13 °F) is 5,500 BTU/h, 61% of its nominal 9,000 BTU size.
At 8 °C, its certified maximum capacity reaches 13,136 BTU/h, 46% more than its nominal 9,000 BTU size.
According to NEEP, it delivers 8,500 BTU/h at −15 °C, against 9,100 for the Gree Livo R32 12 000.
At −25 °C, its certified minimum capacity is 1,800 BTU/h (3,070 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 8,500 BTU/h, 71% of its nominal 12,000 BTU size. Its COP there is 1.75.
According to NEEP, it delivers 9,100 BTU/h at −15 °C, against 8,500 for the Gree Livo R32 12 000 (115 V).
At −25 °C, its certified minimum capacity is 1,800 BTU/h (3,070 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 9,100 BTU/h, 76% of its nominal 12,000 BTU size. Its COP there is 1.80.
At 8 °C, its certified maximum capacity reaches 22,500 BTU/h, 25% more than its nominal 18,000 BTU size.
According to NEEP, its certified minimum capacity is at least 7,000 BTU/h at every temperature. In a small, well-insulated room it will cycle on and off more often: size it carefully.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 12,100 BTU/h, 67% of its nominal 18,000 BTU size. Its COP there is 1.85.
At −25 °C, its certified minimum capacity is 3,100 BTU/h (5,800 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 15,700 BTU/h, 65% of its nominal 24,000 BTU size. Its COP there is 1.75.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 23,000 BTU/h, 77% of its nominal 30,000 BTU size. Its COP there is 1.80.
According to NEEP, its COP at −25 °C is 1.54: the highest of the Livo R32 line, which ranges from 1.30 to 1.52 at that temperature.
At −25 °C, its certified minimum capacity is 7,000 BTU/h (10,000 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 24,600 BTU/h, 68% of its nominal 36,000 BTU size. Its COP there is 1.80.
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.A dash in the aid column: amount to be confirmed for this model.
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 room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
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.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
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).