Installation of a Gree Livo R32 wall-mounted heat pump in Saint-Laurent
Installation of a Gree Livo R32 in Saint-Laurent on a building facade: anti-vibration brackets, compact layout, gravity drain , and defrost management. AirGreen delivers quiet comfort and a neat finish for the entire Greater Montreal area.
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.
Contemporary facade, demanding co-ownership, installation in the middle of winter: we are deploying a Gree Livo R32 wall-mounted heat pump on a residential building in Saint-Laurent . The objective is clear: to offer four-season comfort while respecting the constraints of a multi-unit building and the climatic realities of Greater Montreal .
A real winter construction site context, without compromising on quality
In Saint-Laurent, recent buildings alternate gray architectural panels with wood inserts. Condominiums require:
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discreet integration of equipment;
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reduction of solid-borne vibrations towards neighboring units;
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watertight holes and exemplary defrosting management .
Our mission: to install a high-performance R-32 heat pump in a wall-mounted configuration, on brackets at mid-height, with a short cooling path and a reliable gravity drain , while maintaining a high level of safety at height.
Why the Gree Livo R32 for an apartment building?
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R-32 refrigerant : lower charge and high seasonal efficiency compared to R-410A.
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Inverter modulation : temperature stability, controlled consumption, silence in continuous operation — a major advantage for a multi-family building .
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Wide operating range for both air conditioning and heating, suitable for Montreal winters.
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Simplified HVAC maintenance : accessible filters, quick cleaning, clear diagnostics.
Outdoor installation: anti-vibration brackets and controlled defrosting
We mount the unit on galvanized brackets anchored to the structure. This choice raises the condenser above snow accumulations and frees up ground circulation. Key points:
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Neoprene pads and spacers to decouple vibrations;
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Standardized clearances around the facade to prevent air recirculation;
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Defrost water management : courtesy gutter to a drainage point that does not hinder pedestrians or balconies;
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Clear service road for maintenance, even in winter.
The wiring is protected in an outer sheath and connected to a disconnect switch within visual range. The panel's dedicated circuit breaker complies with the selected BTU rating.
Compact refrigeration path and reliable gravity drain
The inner head is located immediately behind the wall. We retain a very short route of the insulated copper connections, with:
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Clean drilling (≈ 65 mm) sloping outwards;
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Calibrated flares , controlled tightening torque , new rings;
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Evacuation to a deep vacuum and nitrogen test before opening the valves;
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UV-stable waterproof capings , harmonized with the facade;
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Continuous gravity drain , service trap accessible inside for seasonal cleaning.
This compact layout reduces pressure losses and preserves seasonal efficiency , a point often neglected in installations crossing long distances on the facade.
Installation at height: safety and precision
Working on a facade in winter requires a strict method:
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Stabilization of ladders and grip control on snowy surfaces;
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Structural marking to anchor the brackets in the carrier (and not just the skin of the panels);
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Drilling template to avoid networks and facing fixings;
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Multi-layer sealing (closed cell foam + vapor barrier) on the interior side;
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Check anchoring torques and support level to ensure correct condensate drainage.
Interior: even diffusion and silence
The wall-mounted fan head is positioned high under the ceiling to promote air circulation . The automatic sweep directs the airflow toward the living area while avoiding direct airflow onto the occupants. The vertical vanes distribute the air into the adjacent room. Filters are readily accessible, encouraging regular HVAC maintenance .
AirGreen instrumented commissioning
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Extended vacuum resistance (micron control) and leak test using the detector.
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Delta-T measurements in air conditioning and heating, superheat/subcooling check.
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Intensity readings and verification of the acoustic profile at low speed, essential in co-ownership.
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Customer training : seasonal adjustments, filter maintenance, best savings practices.
Results: constant comfort and optimized energy bill
From the moment it is switched on, the Livo R32 modulation stabilizes the setpoint without oscillations. In air conditioning, the temperature decreases uniformly; in heating, the sensation of gentle heat is uniform up to the side rooms thanks to the orientation of the shutter . The facade retains a clean aesthetic , the capings integrating with the lines of the building.
Usage tips for occupants and managers
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Maintain a stable setpoint; the inverter consumes less in continuous operation.
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Use Auto-Fan and sweep to homogenize the living area.
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In winter, tilt the shutter slightly downwards to counteract stratification.
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Clean filters every 4–6 weeks during use.
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Schedule annual maintenance (evaporator cleaning, electrical check, drain and insulation inspection).
Grants and Eligibility
Modern R-32 wall-mounted heat pumps like the Gree Livo R32 are generally eligible for assistance programs in Quebec, subject to performance ratings and quality of installation. We support our clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore for:
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validate eligibility based on BTU capacity;
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provide photos , serial numbers and certificates ;
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secure a complete file for reduced processing times.
Pitfalls to avoid in multi-layer facades
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Anchoring in the facing only : risk of tearing; we are targeting the structure .
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Air recirculation due to lack of clearances: reduced capacity; we respect the distances .
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Drain without slope or not insulated: overflows and marks; we ensure the slope and protection .
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Oversized connections and unnecessary loops: load losses; our layout remains compact .
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Vibration propagation to slabs and railings: our buffers and spacers neutralize them.
Why AirGreen for your HVAC installation in Saint-Laurent and Greater Montreal?
We combine rigorous sizing , careful execution and in-depth knowledge of local realities (snow, wind, co-ownerships, ventilated facades). Our expertise covers recent brands — Gree, Fujitsu, Sharp, Midea28 , etc. — and is accompanied by after-sales service and maintenance contracts that extend the performance of your HVAC system .
Quick Installation Guide
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Machine : Gree Livo R32 wall-mounted heat pump (BTU suitable for housing).
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Location : Saint-Laurent, Montreal .
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Mounting : anti-vibration brackets on the facade; standard clearances; defrosting management.
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Route : very short connections, waterproof caps , gravity drain with siphon.
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Objectives : stable comfort, silence , energy savings, preserved facade.
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).