Installation of a Gree Livo R32 wall-mounted heat pump in Le Sud-Ouest (Montreal)
AirGreen installs a Gree Livo R32 in a condo in the Southwest: wall-mounted head near a patio door, optimized shutter orientation, short connections and gravity drain for efficient comfort in Montreal, Laval, Longueuil, North Shore and South Shore.
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.
Four-season comfort for an urban condo, with a design designed around a patio door
At AirGreen , we have just installed a Gree Livo R32 wall-mounted heat pump in a condo in the Le Sud-Ouest district (Montreal) . The bright and compact home has a configuration that is very common in urban areas: an interior head mounted high on a side wall, in the immediate vicinity of a large patio door opening onto the balcony. This reality requires specific choices for the HVAC installation to ensure uniform air distribution, discreet operation and optimal performance in both summer and winter.
The context: optimizing an open-plan living space
The living area combines a living room and a dining area. Before our intervention, the owner relied on a wall-mounted electric convector for heating and had to manage glass surfaces responsible for significant solar gain in summer and heat loss in winter. The objectives were clear:
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improve thermal comfort throughout the room without creating a direct draft;
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stabilize humidity on hot days;
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reduce electricity consumption through inverter modulation and programming.
The Gree Livo R32 meets these expectations precisely: inverter compressor , low GWP R-32 refrigerant , low noise levels and fine control of the shutters.
Interior head location: close to a bay window, without compromising airflow
We fixed the unit high on the wall , about 10–15 cm from the ceiling, which promotes the Coanda effect : the air blows along the ceiling, then descends without a direct draft onto the occupants. The proximity of the patio door requires specific adjustments:
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Orient the shutters slightly towards the center of the room to avoid short-circuiting with the cold window in winter.
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In summer, moderate downward slope to increase the mixing rate and better capture ambient humidity.
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Recommendation to install a low-overhang thermal blind or curtain to limit direct sunlight, without blocking air intake.
The lateral positioning frees up traffic areas and facilitates access for HVAC maintenance (cleaning filters, inspecting probes, degreasing fins).
Route of connections: short crossing and gravity evacuation
The installation benefits from a direct passage to the exterior wall, just behind the head. This reduces the length of refrigerant connections , lowers pressure losses and simplifies future maintenance. Key points:
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Drilling with controlled slope towards the outside for a gravity condensate drain (no pump required, therefore less maintenance).
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Continuous high density UV insulation , exterior capping with sealed joints for a durable finish.
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Disconnection box near the outdoor unit (on the balcony) to secure any intervention.
In a condominium context, we always coordinate the layout of the pipes to respect the aesthetics of the facade and the regulations of the union.
Sizing and recommended use
For an open condo area, the 9,000–12,000 BTU range of the Livo R32 is generally well suited, subject to a load calculation that takes into account:
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actual insulation (walls, slab, glazing);
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orientation and solar gains ;
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of occupation and internal devices.
Objective: avoid oversizing (too short cycles, ineffective dehumidification) and maintain superior seasonal efficiency . Inverter modulation allows the temperature to be maintained continuously without jolts, with smoothed consumption .
Commissioning: the AirGreen method
We systematically apply a six-step protocol:
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Nitrogen test and brazing inspection.
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High vacuum to the micron, maintenance and control of ascent.
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Opening the fluid and checking for superheat/subcooling .
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Control of fan speeds and noise at different levels.
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Calibration of the shutters for the “side bay window” configuration.
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Customer training : time programming, eco mode, good dehumidification practices.
Result when switched on: uniform temperature in the living area, rapid drop in humidity on hot days and silence compatible with teleworking.
Why choose the Gree Livo R32 for Montreal
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R-32 : better volumetric performance and reduced environmental impact compared to R-410A.
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Inverter : precise modulation, significant energy savings in spring and autumn.
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Optimized exchanger : good behavior at low temperatures for winter backup.
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Easily accessible filters : simple maintenance to maintain efficiency and air quality.
Depending on the configuration chosen and the current scales, this type of heat pump may be eligible for subsidies in Quebec. We verify eligibility on a case-by-case basis (efficiency, nominal power, performance in cold climates).
Installation details can be seen in the photo
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Interior head placed at the corner of a dark wall, with upper clearances respected.
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Proximity to an existing electric convector : it remains as an emergency backup for episodes of extreme cold.
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Wall control within reach and free socket for maintenance accessories (backpack vacuum cleaner, testers).
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Patio door on the right side: justification for the specific adjustment of the shutters and the localized anti-overcooling programming.
Use and maintenance tips for the owner
To maintain the performance of the heat pump :
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Leave 30–50 cm clear around the head; avoid thick curtains in front of the device.
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Clean the filters every 4 to 8 weeks during use.
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In summer, use DRY mode on humid days with moderate temperatures.
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In winter, maintain a stable setting and avoid frequent switching between modes.
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Schedule annual HVAC maintenance : check pressures, sensors, fan, and inspect exterior capping on the balcony.
Pitfalls to Avoid in Condos with Patio Doors
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Blowing directed towards the window : risk of stratification and increased consumption.
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Blackout curtain stuck to the ceiling light in the head: obstruction of air intake.
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Refrigerant lines too long drawn around the edge of the balcony: pressure losses and complicated maintenance.
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No slope on the drain: internal drip during heat waves.
Our teams anticipate these points during the technical visit and suggest appropriate corrections (orientation of shutters, discreet sunshade, short lines).
Result: immediate comfort and better controlled bills
In use, the condo benefits from rapid cooling , better controlled humidity and discreet operation compatible with urban life. The existing convector remains a backup solution; the Gree heat pump provides the main comfort for the majority of the year, with savings linked to inverter modulation and time programming .
This achievement in Montreal reflects our way of doing things: rigorous sizing , clean execution and complete support , which we also deploy in Laval , Longueuil , on the North Shore and on the South Shore .
Why AirGreen
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Local expertise : thousands of residential installations in Greater Montreal.
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Durable finishes : cappings, seals, supports and anti-vibration shims.
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Complete service : choice of equipment, grant procedures, HVAC maintenance and responsive after-sales service.
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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Every house has its constraints. We see them before we install.
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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).