LG: Cassette type ceiling light 3X3 LGRED | 24,000 BTU
SEER2 (Seasonal Air Conditioning Efficiency)
HSPF2 (Seasonal heating efficiency)
EER2 (Instantaneous efficiency in air conditioning)
COP at -8 °C (Heating energy efficiency)
CFM (Airflow)
A 3X3 Ceiling Cassette Designed for Stable, Discreet, and Efficient Comfort in Quebec Spaces
The LGRED 24,000 BTU 3X3 cassette ceiling unit is for homeowners, building managers, businesses, offices, and open residential spaces that want a high-performance heating and air conditioning solution without cluttering walls with a traditional wall-mounted unit. At AirGreen, we recommend this type of equipment when the goal is clear: to distribute air more evenly, preserve interior aesthetics, and obtain a heat pump adapted to the winters of Montreal, Laval, Longueuil, the North Shore, and the South Shore.
This LG system, consisting of the KNSCB241A indoor unit and the KUSXA241A outdoor unit, belongs to the LGRED family, a range known for its low-temperature heating capability. The LG technical sheet identifies the system as KSSCA241A, which is a single-zone 3X3 four-way ceiling cassette operating on R-32 refrigerant. It notably indicates a cooling capacity of 9,600 to 30,000 BTU/h, a nominal cooling capacity of 24,000 BTU/h, a SEER2 of 22.0, an EER2 of 13.0, and an HSPF2 of 10.5.
Why a 3X3 cassette instead of a classic wall-mounted unit
A wall-mounted unit is often an excellent choice for a closed room, a compact condo, or a bedroom. A 3X3 ceiling cassette, on the other hand, becomes very interesting in spaces where air needs to circulate more widely and naturally. We are particularly thinking of:
- open-plan areas with living room, dining room, and kitchen;
- professional offices with several workstations;
- convenience stores;
- conference rooms;
- premises with suspended ceilings;
- multi-zone dwellings where aesthetics are a priority;
- spaces where walls are already occupied by windows, storage, artwork, screens, or glass doors.
The cassette format allows for ceiling diffusion, with air distribution in multiple directions. In practice, this reduces excessively cold zones near the unit and excessively warm zones at the periphery. In a commercial premise on the South Shore, for example, we have seen a configuration where a wall-mounted unit blew directly towards the service counter, making the space uncomfortable for employees. A ceiling cassette solution would have allowed for better-distributed, less intrusive, and more suitable diffusion for the variable foot traffic of the business.
Performance adapted to Greater Montreal winters
The climate of Greater Montreal imposes a particular reality on HVAC systems: a device must be able to cool efficiently in July, but also to heat when the temperature drops well below freezing. The LG: 3X3 LGRED Cassette Ceiling Unit | 24,000 BTU is designed to provide heating down to -25 °C, which makes it relevant for many residential and commercial buildings in Quebec.
The LG technical sheet indicates a maximum heating performance of:
- 29,700 BTU/h at 17 °F;
- 28,000 BTU/h at 5 °F, or approximately -15 °C;
- 24,800 BTU/h at -4 °F, or approximately -20 °C;
- 21,600 BTU/h at -13 °F, or approximately -25 °C.
These data are important. They help determine if the unit can serve as a primary heating source under certain conditions or if it should be integrated into a strategy with auxiliary heating. At AirGreen, we do not choose a unit solely based on its nominal capacity of 24,000 BTU. We also evaluate the area, insulation, building orientation, ceiling height, fenestration, air infiltration, actual use of the rooms, and occupant expectations.
In an office located in Laval, for example, an undersized cassette could run almost continuously on cold days, while an oversized unit might experience short cycles in cooling. Proper sizing influences comfort, noise, consumption, and system lifespan.
Key Technical Features to Remember
This LG model stands out with a combination of features that place it in a serious category for ceiling heat pump projects:
- Nominal cooling capacity: 24,000 BTU/h
- Nominal heating capacity: 27,000 BTU/h
- Refrigerant: R-32
- ENERGY STAR Certified
- ENERGY STAR Cold Climate Certified
- AHRI: 214825954
- ENERGY STAR ID: 3544253
- SEER2: 22.0
- HSPF2: 10.5
- EER2: 13.0
- Maximum indoor airflow: 794 CFM
- Dehumidification: 4.0 pints/hour
- Indoor sound level: approximately 35 to 40 dB(A), depending on mode
- Outdoor sound level: approximately 51 to 52 dB(A)
- Voltage: 208-230 V / 60 Hz / 1 phase
- MCA: approximately 19.1 A, commonly rounded to 20 A based on electrical analysis
- MOP: 30 A
- Piping: 3/8 inch liquid and 5/8 inch vapor
- Maximum equivalent piping length: 164 ft
- Maximum elevation difference: 98.4 ft
- Indicated interior dimensions: 37.38 x 37.38 x 8.09 in
- Indicated exterior dimensions: 37.38 x 13 x 32.84 in
For an owner, these figures may seem technical. For our refrigeration technicians, they dictate concrete decisions: outdoor unit placement, refrigerant line routing, distance to the electrical panel, drainage strategy, support choice, compliance with local standards, and ease of access for HVAC maintenance.
A discreet device, but demanding in terms of installation
The 3X3 cassette is discreet once installed, but its installation requires more preparation than a simple wall-mounted unit. Before recommending this product, we check several points on site.
The first element is the ceiling structure. A cassette must be securely suspended, aligned, and neatly integrated into the existing ceiling. In a commercial suspended ceiling, installation can be very elegant, but it must take into account tiles, suspension bars, light fixtures, ducts, cables, sprinklers, and existing air returns.
The second element is drainage. This model includes an internal condensate pump, a major advantage when gravity drainage is not simple. However, the presence of a pump does not replace rigorous installation. The technical sheet illustrates drainage and water lift constraints in the installation drawings. Incorrect slope, a too-tight pipe, a poorly positioned fitting, or insufficient maintenance access can lead to water problems, especially during periods of high summer humidity.
The third element is the positioning of the outdoor unit. In Montreal, narrow backyards, balconies, alleys, flat roofs, and side margins require precise planning. In Longueuil and on the South Shore, ground installations are common, but they must remain protected from snow accumulation, winter defrosting, and ventilation obstructions. On the North Shore, we also pay particular attention to prevailing winds and clearances around the unit.
LG features that enhance daily comfort
This LG system includes several useful features when properly configured:
Variable Speed Inverter Compressor
The system adjusts its capacity instead of simply starting and stopping at full load. This improves temperature stability and limits uncomfortable fluctuations.
Jet Cool and Jet Heat
These modes allow for faster achievement of a desired temperature after a period of unoccupancy, for example, in a business opening in the morning or an office used on a variable schedule.
Auto Restart
After a power outage, the unit can resume operation according to its preset parameters. This is particularly useful in commercial premises where the system should not remain off after an electrical interruption.
Auto Changeover
The system can switch between heating and cooling based on indoor conditions, an interesting feature in spring and autumn, when temperature fluctuations are frequent.
Swirl Wind, Direct / Indirect Wind, Smart Mode and Refresh Mode
These functions help customize air diffusion. In an office, for example, indirect mode can prevent direct airflow to a workstation. In an open-plan area, more active diffusion can help standardize comfort.
Optional WiFi
The PWFMDD200 module can be added for remote control. This option is relevant for owners who want to manage the temperature before arriving on site or for managers of small premises who want to reduce forgotten heating or cooling outside business hours.
LogisVert Grant and Energy Eligibility
The product page indicates a provincial LogisVert grant of $2,040, with an update on November 26, 2025. As grant programs can change, we always validate eligibility at the time of submission and installation. Elements such as ENERGY STAR certification, product ID, AHRI, and installation requirements can play a role in preparing the application.
At AirGreen, we help our clients understand the necessary information to avoid common errors: incorrect model number, incomplete documents, confusion between indoor unit and complete system, or purchasing a high-performance device poorly suited to program rules.
What our team checks before installing this LGRED cassette
Proper sizing: the starting point for a successful project
A 24,000 BTU cassette may seem suitable for a large room, but square footage alone is never enough. An open-plan area on the ground floor of a house in Boucherville does not have the same needs as a glazed commercial space in Montreal, an interior office in Laval, or a condo on the North Shore with a partial cathedral ceiling.
During our technical visits, we evaluate:
- wall and ceiling insulation;
- window quality;
- sun exposure;
- number of occupants;
- heat-emitting equipment;
- ceiling height;
- natural air circulation;
- presence of existing heating;
- acceptable noise level;
- co-ownership or commercial building constraints.
A typical example: in a commercial training room type space on the South Shore, the thermal load can vary greatly depending on the number of participants. A four-way cassette can offer better distribution than a single wall-mounted unit, but periods of maximum occupancy must be planned for, not just quiet days.
Mistakes to avoid with a ceiling cassette
The first mistake is to choose the location purely for aesthetic reasons. A cassette must be well-centered within the space to be treated, but also compatible with the ceiling structure, drainage, piping, and service access.
The second mistake is neglecting access for maintenance. Filters, drain pan, condensate pump, and connections must remain accessible. An installation that is too tight can cost more in the long run, especially when cleaning or diagnosis becomes necessary.
The third mistake is ignoring the actual noise in the room. An indoor sound level of around 35 to 40 dB(A) is generally comfortable, but the acoustics of the room influence perception. A hard ceiling, a very reverberant space, or a small enclosed office can make a unit more audible than a large open space.
The fourth mistake is underestimating winter conditions. The LGRED model offers interesting capacity at low temperatures, but the outdoor unit must be installed to withstand snow accumulation, defrost runoff, winds, and clearance constraints.
HVAC Installation by AirGreen: a practical approach, not just a technical sheet
Our team installs air conditioning, heating, and heat pump systems in a wide variety of contexts: Montreal plexes, condos, single-family homes, offices, businesses, multi-unit buildings, and light institutional spaces. This experience helps us anticipate details that are not always visible on a product sheet.
For this type of LG cassette, our work generally includes:
-
Analysis of the indoor space
We determine if the 3X3 cassette is really the right choice or if another configuration would be more effective. -
Ceiling validation
We check clearances, framing, obstacles, and the feasibility of a clean finish. -
Refrigerant piping planning
The 3/8 in – 5/8 in diameter must be respected, as well as the limits of length, elevation, and refrigerant addition. -
Electrical validation
The system requires adequate power supply, generally associated with a maximum protection of 30 A and a minimum ampacity to be confirmed according to the context. -
Outdoor unit installation
Wall bracket, ground base, clearances, noise, snow, and service access are evaluated. -
Full commissioning
We test heating, cooling, drainage, ventilation, and control operation. -
Usage tips
We explain modes, filter maintenance, temperature settings, and seasonal best practices.
HVAC Maintenance: Preserving the Performance of Your LG Cassette
A well-installed LGRED ceiling cassette must also be well-maintained. Airflow, dehumidification, and performance can decrease if filters are dirty, if the condensate pan accumulates deposits, or if the outdoor unit is obstructed.
We recommend HVAC maintenance adapted to actual use. In a residence, an annual inspection may suffice in many cases. In a commercial space, an office, or a heavily frequented area, more regular maintenance is often preferable. Environments with dust, cooking, hair products, animals, customer traffic, or nearby construction work require more attention.
Good maintenance helps to:
- maintain stable airflow;
- limit odors;
- protect the condensate pump;
- reduce the risk of water leakage;
- maintain energy efficiency;
- extend the system's lifespan;
- detect anomalies before a breakdown.
For which type of client is this model particularly relevant?
The LG: 3X3 LGRED Cassette Ceiling Unit | 24,000 BTU is particularly interesting for clients seeking a high-end solution without a visible wall-mounted unit. It is well-suited for spaces where air diffusion needs to be balanced, where interior design matters, and where winter heating cannot be treated as a secondary function.
We often consider it for:
- open-plan businesses;
- professional offices;
- meeting rooms;
- condos with suitable ceilings;
- high-end renovations;
- residential extensions;
- finished basements with suspended ceilings;
- premises on the South Shore, North Shore, in Montreal, Laval, and Longueuil where a wall-mounted unit is not the most harmonious option.
Why choose AirGreen for this LG model?
Choosing AirGreen means entrusting your project to a team that understands the realities of the Quebec field. We don't just sell a technical sheet. We evaluate the building, installation constraints, desired comfort, applicable subsidies, budget, and system durability.
Our clients particularly appreciate:
- clear quotes before the start of work;
- qualified refrigeration technicians experienced in complex installations;
- an honest approach to the limitations and strengths of each appliance;
- accessible after-sales service;
- civil liability insurance of $5M;
- an active presence in Montreal, Laval, Longueuil, on the North Shore, and the South Shore;
- a showroom in Boucherville to better support projects.
The 3X3 LGRED 24,000 BTU ceiling cassette is an excellent appliance when installed in the right context. Our role is to ensure that this context is thoroughly analyzed, that the installation meets technical requirements, and that the result provides real comfort, season after season.
Request an evaluation for your project
Are you considering an HVAC installation with an LG 24,000 BTU ceiling cassette in Montreal, Laval, Longueuil, on the North Shore, or the South Shore? Contact AirGreen for a clear quote, technical validation, and advice tailored to your building. We will help you confirm if the LG: 3X3 LGRED Cassette Ceiling Unit | 24,000 BTU is the right choice for your space, comfort, and budget.