Project

Installation of a GREE Ceiling Cassette – Heat Pump in Laval

AirGreen installs a GREE ceiling cassette in Laval: a discreet heat pump, integrated into the ceiling, ideal for uniform comfort and a neat HVAC installation.

By AirGreen Climatisation & Chauffage Admin12 min read
Installation of a GREE Ceiling Cassette – Heat Pump in Laval
Installation of a GREE Ceiling Cassette – Heat Pump in Laval
Generic diagram: ceiling cassette connected to an outdoor unit

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.

  1. Built into the ceiling, it sends air out on four sides. Only the grille shows in the room.

  2. Above the ceiling, there has to be enough height for the unit, its hangers and its connections, with access for service.

  3. In cooling mode the cassette produces water. It leaves through a drain with the right slope, or through a pump when needed.

  4. The lines and the cable reach the outside through an opening sealed against water, cold air and insects.

  5. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible.

  6. The compressor and the fan. In heating mode it captures heat from the outdoor air and moves it inside.

  7. It keeps the unit above accumulated snow, so it stays clear and defrost water can drain.

A GREE ceiling cassette installed in Laval for discreet, central, and well-distributed comfort

In this Laval residence, our AirGreen team completed the installation of a GREE ceiling cassette connected to a high-performance heat pump, a solution particularly appreciated when the client is looking for a discreet, ceiling-integrated air conditioning and heating system without a visible wall unit. The project photo shows the final result: a cassette neatly recessed into the ceiling, with its central suction grille, peripheral diffusion louvers, and compact design, engineered to distribute air more evenly throughout the room.

This type of HVAC installation requires greater precision than a traditional wall-mounted unit. The cassette must be perfectly aligned, well-supported in the ceiling, correctly connected to the outdoor heat pump, and then tested to confirm the quality of drainage, ventilation, air diffusion, and operation in both heating and cooling modes. In Laval, where homes and condos feature highly varied configurations, this solution often becomes ideal when wall space is limited or when interior aesthetics need to remain uncluttered.

At AirGreen, we install HVAC systems throughout the greater Montreal area, including Laval, Longueuil, the North Shore, and the South Shore. This project perfectly illustrates our approach: offering a solution adapted to the building's architecture, then executing the installation with the necessary level of care to ensure comfort, reliability, and ease of HVAC maintenance.

Why choose a ceiling cassette over a wall-mounted unit

A wall-mounted heat pump remains an excellent option for many residential projects. It is accessible, efficient, and quick to install. However, in certain situations, a ceiling cassette offers very tangible advantages.

In this installation in Laval, the choice of a GREE cassette met several objectives:

  • preserving available walls for furnishing and decoration;
  • achieving more central air diffusion in the room;
  • reducing the visual impact of the indoor unit;
  • improving comfort in an open space or main living area;
  • avoiding an overly concentrated air jet from a single wall;
  • integrating the system into a more discreet finish.

The ceiling-mounted cassette allows air to circulate from a more central point. Depending on the room's configuration, it can distribute air in multiple directions, which helps limit temperature variations. For a client who wants both an efficient air conditioner in summer and a useful heat pump during colder periods, this approach combines comfort, performance, and discretion.

A clean visible finish, but mostly hidden technical work

When the work is finished, the client primarily sees the white grille of the cassette, well-integrated into the ceiling. However, the most important part of the installation is above: support structure, technical clearances, refrigerant connections, drainage, electrical supply, communication between units, and insulation of pipes.

In the photo, the GREE cassette is installed compactly, with a clean ceiling outline. This finish requires meticulous preparation. The opening must be adapted to the appliance, the cassette must be well-centered, the louvers must operate freely, and the grille must remain accessible for maintenance.

An error of a few millimeters in level or positioning can have significant consequences: inadequate condensate drainage, vibration, noise, a less refined finish, or difficulty accessing the filter. This is why our team treats every cassette installation as a precision project.

Technical challenges specific to ceiling cassettes

Installing a GREE ceiling cassette in Laval is not just about fixing a unit above the ceiling. Several elements must be validated before and during the work.

The mechanical support of the unit

A cassette must be solidly supported by the appropriate structure. It should not depend on drywall or an unreinforced suspended ceiling. At AirGreen, we check the existing configuration and prepare the necessary anchor points to ensure a stable installation.

Good support reduces the risk of vibration and contributes to quieter operation. It also protects the interior finish in the long term.

Condensate drainage

In cooling mode, a cassette produces condensation water. This water must be properly evacuated. Drainage is one of the most critical points of any recessed HVAC installation.

Depending on the building's configuration, the drain may operate by gravity or require a condensate pump. In all cases, we check the evacuation path, slopes, connections, and accessibility. Improper drainage can cause ceiling leaks, odors, or system shutdowns.

Refrigerant line insulation

Refrigerant lines must be carefully insulated, especially when passing through areas where temperatures vary. Inadequate insulation can lead to condensation, performance losses, and damage to surrounding materials.

For this GREE installation in Laval, our goal was to maintain a clean, durable, and safe installation, both in the visible part and in the technical areas.

Access for maintenance

A ceiling cassette must be maintainable. The filter, grille, condensate tray, louvers, and certain components must remain accessible. An installation that looks good on the day of installation but becomes difficult to maintain is not a well-thought-out installation.

At AirGreen, we install each system taking into account future HVAC maintenance, because good maintenance extends the lifespan of the heat pump and helps maintain stable performance.

The GREE brand: an appreciated solution for residential projects

GREE is a well-known brand in the field of air conditioning and heat pump systems. Its equipment is often chosen for its versatility, efficiency, and ability to integrate into various types of residential projects.

In the case of a ceiling cassette, GREE offers an interesting option for clients who want to avoid a classic wall-mounted unit while retaining the comfort of a mini-split system. Depending on the exact model installed, GREE units can offer good energy efficiency, modulating operation, and air diffusion adapted to living spaces.

For homeowners in Laval, Montreal, Longueuil, the North Shore, and the South Shore, this type of system can be relevant in several contexts:

  • renovations with accessible ceilings;
  • extensions;
  • open-plan rooms;
  • living rooms or family rooms;
  • condos where interior aesthetics are important;
  • spaces where walls are already occupied;
  • projects where comfort must be uniform without multiplying visible units.

An installation designed for the client's actual use

Every AirGreen project begins with an analysis of the space. For this installation in Laval, the priority was to obtain a solution that does not disrupt the interior layout while improving the comfort of the room.

A poorly positioned appliance can create discomfort even if it performs well on paper. An air jet directed towards a seating area, a bad diffusion angle, or a cassette installed too close to an obstruction can impair comfort. We therefore take into account how the room is used daily: circulation, furniture, ceiling height, sun exposure, openings, heat zones, and client expectations.

The GREE cassette visible in the photo is positioned to offer central and neat diffusion. The objective is simple: allow the client to enjoy more stable comfort, without feeling that an appliance visually dominates the space.

Mistakes to avoid before installing a ceiling cassette

For homeowners considering a ceiling cassette in Laval or elsewhere in the greater Montreal area, certain mistakes often recur.

Choosing the location based solely on appearance

The location must be aesthetically pleasing, but also technically logical. It is necessary to check what is above the ceiling, the possibility of draining water, access to pipes, and available support.

Neglecting drainage

Drainage is sometimes considered a detail, whereas it is a central element. A poorly drained cassette can cause damage to the ceiling. At AirGreen, we always give priority attention to this part of the project.

Installing a unit that is too difficult to maintain

A recessed system must remain accessible. If access to the filter, pump, or connections becomes complicated, maintenance may be neglected, which can reduce the performance and lifespan of the appliance.

Choosing capacity without full evaluation

BTU capacity must be adapted to the room, insulation, windows, solar orientation, and actual use. An undersized unit will run too long; an oversized unit can create inconsistent comfort and reduce efficiency.

Comparing only the initial price

A cheaper installation can become costly if it creates vibrations, leaks, an imperfect finish, or maintenance difficulties. For a ceiling cassette, the quality of the installation matters as much as the choice of equipment.

Subsidies and eligibility: a point to be validated according to the exact model

Heat pump systems may sometimes be eligible for subsidy programs in Quebec, particularly when the model meets certain energy performance criteria. However, eligibility always depends on the exact model installed, its configuration, certification, and the rules in force at the time of installation.

At AirGreen, we help our clients understand important information before making a decision. For a GREE cassette, one should not rely solely on the brand: the model number, capacity, efficiency data, and applicable criteria must be validated. This verification avoids unpleasant surprises and allows the client to compare options more clearly.

Laval: a territory where HVAC projects require adaptation

Laval brings together houses of very different styles: bungalows, cottages, condos, duplexes, renovated houses, extensions, and newer properties. This diversity requires a flexible approach. A perfect solution in a house in Fabreville will not necessarily be identical to that of a residence in Sainte-Dorothée, Chomedey, Vimont, or Duvernay.

Our experience in the region allows us to adapt each HVAC installation to the reality of the building. In some cases, a wall-mounted heat pump is the best solution. In others, a ceiling cassette like the one installed here offers a significantly more harmonious result. The important thing is to choose the system based on the building, and not according to a single formula.

What the client gets with a well-installed cassette

A well-installed ceiling cassette brings several concrete benefits:

  • more uniform comfort;
  • a discreet indoor unit;
  • better use of walls;
  • more central air diffusion;
  • a more integrated appearance;
  • a solution adapted to open-plan rooms;
  • reliable performance when the installation is well done;
  • better perceived value in meticulous renovation projects.

In this GREE installation in Laval, the final result reflects what we aim to deliver: a neatly integrated appliance, a clean ceiling finish, and an installation designed to last.

The AirGreen approach: precision, cleanliness, and transparency

At AirGreen, we know that clients are not just looking for a machine. They want a solution that works well, respects their home, remains aesthetic, and does not create problems after the installers leave. This is particularly true for a ceiling cassette, as much of the work is hidden.

Our team takes the time to plan pipe routes, validate drainage, protect surfaces, comply with connection standards, and test the system before the end of the work. We also explain to the client how to use the appliance, how to clean the filters, and when to plan HVAC maintenance.

This installation in Laval clearly demonstrates the difference between simply installing equipment and a truly professional installation. Final comfort depends on the appliance, but also on every decision made during the work.

An ideal solution for homeowners who want comfort and discretion

The GREE ceiling cassette installed in Laval represents a very interesting solution for clients who want an efficient heat pump system, but less visible than a wall-mounted unit. It is aimed at homeowners who value comfort, interior appearance, and installation quality.

For residences in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this type of system can transform a room without heavily modifying its aesthetics. When well installed, a ceiling cassette becomes almost natural in the space: it works in relative silence, diffuses air regularly, and leaves the walls free.

At AirGreen, we continue to recommend this type of solution when the context is right, as it meets a real need: to obtain high-end comfort, but integrated with sobriety. This GREE installation in Laval is an excellent example, with a clean finish, careful integration, and technical attention to every invisible detail.

The steps

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.

Step 1 of 9The on-site estimate

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.

  1. 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.
  2. The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
  3. Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
  4. The wall openingA single opening, with the slope the drain needs to flow outside.
  5. The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
  6. Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
  7. The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
  8. Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
  9. The walkthroughRemote, modes, filters: we show you the essentials before we leave.
Your numbers

And at your place?

Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.

Size checkYour baseboards, in BTU/h
–BTU/h of installed electric heat

    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.

    Through the seasons

    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.
    And at your place?

    Which type of equipment for your project?

    Pick what looks like your need.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Frequently asked questions

    What people ask us about this kind of work

    12 questions
    Does a wall-mounted heat pump heat in winter?
    Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
    Wall-mounted or multi-zone: how do I choose?
    One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
    Where does the outdoor unit go?
    Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
    Are there grants?
    Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
    How cold can it heat?
    It depends on the model. According to Hydro-Québec, newer models work down to a temperature between −15 °C and −25 °C, and some cold-climate models are certified lower. The minimum temperature is on each unit's spec sheet.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Is it noisy?
    The sound level depends on the model and is listed in decibels on each unit's spec sheet. Location matters too: when possible, we avoid putting the outdoor unit under a bedroom window.
    The outdoor unit is covered in ice: is that normal?
    Some frost is: the unit runs defrost cycles. Never hit the ice. If the unit stays iced up or stops heating, call us.
    Does AirGreen hold the required licences?
    Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
    Is the estimate free?
    Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.
    Going further

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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).

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