A successful ceiling cassette installation begins well before the unit is mounted
At AirGreen, we know that installing a ceiling cassette indoor unit is far more complex than simply plugging it in or securing it to a slab. It’s a highly technical operation that requires meticulous planning, expertise in HVAC, and a thorough understanding of the building’s architecture. In Montréal, where building structures vary dramatically from one borough to another, anticipating the unexpected is essential to ensure an efficient, long-lasting, and hassle-free installation for the client.
Fully understanding the specifics of a ceiling cassette
Cassette units are highly valued for their discreet appearance, even air distribution, and integration into false ceilings, especially in commercial spaces, offices, or modern residential architecture. However, integrating them requires precise technical considerations:
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Access to the plenum to install the indoor unit
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Sufficient clearance for proper air circulation
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Perfectly managed condensate drainage
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Correctly sized refrigerant lines
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Compliance with local electrical and HVAC regulations (Montréal, Laval, Longueuil)
Anticipating site conditions in Montréal
Before any installation, our team always carries out a thorough technical site inspection. Here are some common realities that can lead to surprises if not addressed beforehand:
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Reinforced concrete ceilings, very common in buildings in Plateau Mont-Royal or Ville-Marie, requiring specialized drilling
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Plenums that are too shallow in older buildings, such as those in Old Montréal
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No existing condensate drainage system in some residential extensions in the South-West
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Limited roof access for connecting the outdoor unit, especially in multi-unit buildings
That’s why, at AirGreen, we never begin a project without a full technical audit, including photos, measurements, and validation of duct routes.
Case study: Daikin cassette installation in Outremont
A duplex owner in Outremont contacted us for an invisible, quiet air conditioning solution in his vaulted-ceiling living room. After ruling out wall-mounted units for aesthetic reasons, we proposed a Daikin 18,000 BTU cassette, ideal for his large open space.
Challenges we encountered:
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Ceiling too narrow for standard installation
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Complex beam structure
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Drain path required a condensate pump
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Outdoor unit needed discreet placement at the rear of the building
AirGreen solutions:
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Redesigned the plenum with a custom-built enclosure, in partnership with a local carpenter
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Installed a mini silent condensate pump to prevent backflow issues
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Used reinforced anti-vibration mounting to reduce operational noise
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Optimized refrigerant line routing through existing walls without affecting aesthetics
The result: an invisible, silent, high-performing installation, completed in just 3 days, with a happy client and no surprise extra costs.
Common mistakes to avoid
Here are some typical errors we often see from inexperienced installers:
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Installing a cassette unit without checking ceiling level, causing poor condensate drainage
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Overlooking the airflow noise in heating mode, which can be noticeable if the unit is improperly sized
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Using non-certified ducts or connectors, reducing overall system performance
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Underestimating the unit’s weight, which can lead to sagging or vibrations
At AirGreen, we make sure every cassette installation meets energy performance standards, space ergonomics, and the client’s aesthetic preferences.
Available grants for this type of installation
In Montréal, certain ceiling cassette installations may be eligible for financial incentives, especially when part of an energy conversion project (e.g., replacing electric or oil-based systems).
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Hydro-Québec's LogisVert Program
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ÉcoPerformance subsidy
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RénoVert tax credit (if applicable)
Our advisors take care of verifying the eligibility of each project and assist the client with all administrative steps.
Why choose AirGreen for your ceiling cassette installation?
At AirGreen, we believe that transparency, technical precision, and customer satisfaction are the foundation of every successful HVAC project. Each ceiling cassette installation in Montréal, Laval, Longueuil, the North Shore, or the South Shore is carried out by certified technicians trained on the specific features of every brand (Daikin, Mitsubishi, Fujitsu, Gree…).
Our commitments:
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Free personalized assessment
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Clear and detailed quote with no hidden fees
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Certified TEQ installers, members of the CMMTQ
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On-time and on-budget delivery
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Extended parts and labor warranty
In summary
Avoiding unpleasant surprises during a ceiling cassette installation in Montréal starts with choosing a trusted partner, capable of anticipating constraints, optimizing every technical detail, and guaranteeing an aesthetic, high-performance, and long-lasting result. At AirGreen, we combine on-site experience, precision engineering, and full client support to turn every project into a success.