Installation of a GREE (Livo R32 series) wall-mounted heat pump in Rosemont–La Petite-Patrie
GREE wall-mounted heat pump (Livo R32) installed in Rosemont–La Petite-Patrie. Instrumented commissioning, 45°C blower, four-season comfort, and meticulously finished by AirGreen. Perfect for Greater Montreal.
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 well-groomed interior, precise testing and immediate comfort in a Rosemont condo
At AirGreen , we have just installed a GREE wall-mounted heat pump ( Livo R32 family) in a condo in the Rosemont–La Petite-Patrie district of Montreal . The aim of the project was to provide reliable heating in winter and stable air conditioning in summer , while respecting the constraints of urban housing: limited space, close neighbors and the need for impeccable finishing. The interior head, with its discreet design and integrated digital display, fits perfectly into the living room wall.
Project context and client objectives
The owner wanted to replace an older unit with an energy-efficient, quiet HVAC solution that performed well down to low temperatures. Our recommendation was a GREE R-32 wall-mounted heat pump , known for its high seasonal efficiency and stability in heating mode in Montreal's cold weather. The goal was clear:
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reduce operating costs ;
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stabilize the indoor temperature ;
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preserve acoustic tranquility ;
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prepare the installation for eligibility for subsidies applicable to high-efficiency heat pumps in Greater Montreal.
Reading performance at commissioning
When switching on in heating mode , we took an infrared reading at the battery outlet. The thermometer displays 113°F (≈ 45°C) at the lip of the shutter, a value consistent with a rapid temperature rise on an Inverter unit in nominal mode. This measurement is part of our standard protocol: it validates the quality of the heat exchange , the correct charging of the circuit and the air circulation . We always complete this test with:
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a pressure test and a leak test of the refrigeration circuit;
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checking airflow and fan speeds ;
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control of instantaneous consumption and power factor at different levels.
Technical choice: R-32, Inverter and four-season comfort
R-32 refrigerant has a lower global warming potential than older generation refrigerants, while still allowing for higher efficiencies at partial load. Coupled with inverter logic, the indoor head precisely modulates its power to maintain the setpoint smoothly. In concrete terms, this means:
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less perceived temperature variations ;
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reduced operating noise ;
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optimized electricity consumption during long mid-season and winter periods.
Architectural integration and route of connections
The interior head is positioned at the top of the wall , away from obstacles and with sufficient clearance for the shutter to sweep . This placement ensures uniform diffusion towards the heart of the living areas. The main drilling was made perpendicular to the exterior wall, with a slight slope for gravity drainage of condensates.
The refrigerant connections and communication wiring use discreet white capping that follows the wall-ceiling junction, then passes through the casing to the outdoor unit located on the rear balcony. The total length of the route is optimized to comply with the manufacturer's recommendations and limit pressure losses. Careful drips on the exterior protect the masonry and cladding from water stains in summer.
External support and electrical coordination
Outdoors, the GREE condenser is placed on a raised aluminum support to promote air circulation and prevent snow accumulation. We integrate anti-vibration pads to limit mechanical transmission to the structure. On the power supply side, the dedicated line and the circuit breaker have been checked to confirm compliance with the assembly's nameplate (voltage, maximum current, protections). Grounding and communication wiring are secured in conduits suitable for outdoor environments.
Key steps of an AirGreen installation
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Technical visit and assessment of constraints (useful height, obstacles, orientation of walls, neighborhood).
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Calculation of interior head positioning to maximize sweep and minimize air recirculation.
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Careful drilling with wall pass-through, sleeve and calibrated slope for the gravity drain .
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Installation of the capping and routing of the connections while respecting the radii of curvature and the insulation.
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Brazing under nitrogen , vacuuming and leak testing with dry nitrogen.
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Opening of the valves , electrical checks, progressive start-up and reading of temperatures (including our measurement of ≈45°C on blowing).
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Fine adjustment : modes, speeds, shutters, settings, timer and energy saving options.
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Customer training : filter, cleaning, seasonal instructions, best practices to extend lifespan.
Results: comfort, silence and economy
From the first hour, the customer notices:
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stable and even heat in the living room and adjacent rooms;
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a contained noise level thanks to the modulating fan and the careful location;
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appreciable responsiveness when changing instructions.
In summer, the same unit provides efficient cooling , with intelligent defrosting in winter heating mode to maintain performance without prolonged outages.
HVAC Best Practices and Maintenance
To maintain original yields , we recommend:
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cleaning filters every 4 to 6 weeks during periods of intensive use;
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visual inspection of the capping and drain at each change of season;
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annual maintenance by an AirGreen technician: checking pressures, battery, fan and condensate;
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In winter, clear the area around the condenser (snow, ice, leaves) to ensure air intake .
Grants and Eligibility
High-efficiency wall-mounted heat pumps using new-generation refrigerants such as R-32 are generally eligible for assistance programs in Greater Montreal. We support our clients in Montreal , Laval , Longueuil , as well as the North Shore and South Shore , to select equipment and prepare application files based on current criteria (seasonal efficiency, performance in extreme cold, compliant installation).
What sets AirGreen apart
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Local expertise in Montreal buildings (condos, plexes, houses).
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HVAC installations that prioritize fine finishing and acoustic respect for the neighborhood.
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Complete support : choice of BTU capacity, advice on the position of the heads , preparation for subsidies , instrumented commissioning and responsive after-sales service .
Tips for properly sizing your wall-mounted heat pump
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Evaluate the actual thermal load (taking into account insulation and sealing).
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Favor new generation R-32 models to combine efficiency and reduced environmental impact .
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In condos and plexes, opt for a short route for connections and gravity drainage when the configuration allows it.
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If multiple rooms need to be covered, consider a Multi-Zone Heat Pump or adding a second head, depending on occupancy and partitions.
Review of the project in Rosemont–La Petite-Patrie
This GREE wall-mounted heat pump (Livo R32) perfectly meets expectations: efficient heating even in cold weather, stable cooling in summer, silence , energy efficiency and aesthetic integration . The measurements at commissioning, including the blowing temperature of approximately 45 °C , confirm a healthy circuit and a rapid temperature rise capacity . It is a sustainable investment, aligned with AirGreen standards and the requirements of residential buildings in Montreal.
Are you in Greater Montreal?
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , our team will support you from diagnosis to commissioning , with clear advice, clean work and measured performance. For a similar project, contact us: we will suggest the BTU capacity and configuration adapted to your home and your energy saving objectives.
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.
More jobs to see, near you
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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
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).