LG

LG: 3X3 LGRED Cassette Ceiling Unit | 48,000 BTU

In stock
SKU: KNSCB481A
Provincial Subsidy (LogisVert): 3816 $ (Updated: November 26, 2025)
Model Number (Interior): KNSCB481A
Model Number (External): KUSXA481A
AHRI: 214837933
ENERGY STAR®: Yes
ENERGY STAR® (Cold Climate): Yes / Yes
# ENERGY STAR ID: 3553104
Heating Capacity: -25 °C
Cooling Capacity: 48,000 BTU
Gas (Freon): R-32
WiFi: Optional

SEER2 (Seasonal Air Conditioning Efficiency)

1 20.8 30

HSPF2 (Seasonal heating efficiency)

1 10.6 15

EER2 (Instantaneous efficiency in air conditioning)

1 12.7 20

COP at -8 °C (Heating energy efficiency)

1 2.2 3
Nominal Power: 48,000 BTU
Power at -8°C: 31800 BTU
Power at -15°C: 44500 BTU
Interior Dimensions (L x D x H): 37.38 x 37.38 x 9.38 in
Dehumidification: 11.5 (pt/h)
Sound Pressure Level (Indoor): 41 / 46 dB(A)

CFM (Airflow)

1 1130
External Dimensions (L x W x H): 37.41 x 13 x 54.25 in
Piping: 3/8 - 5/8 po
Sound Pressure Level (Exterior): 56.0 dB(A)
Voltage: 220 V
MCA (Minimum Circuit Ampacity): 32 A
MOP (Maximum Overcurrent Protection): 40 A
Warranty (Compressor - Parts - Labor): 10-10-0 years
Additional Warranty: Possible

A high-performance commercial HVAC solution designed for Quebec's climate

At AirGreen, we regularly install LGRED 3x3 cassette ceiling systems in demanding commercial environments in Montreal, Laval, Longueuil, on the North Shore, and the South Shore. This 48,000 BTU model stands out for its ability to provide uniform comfort, high energy efficiency, and reliability adapted to harsh winters.

This type of unit is particularly popular in offices, shops, restaurants, and open spaces where homogeneous air distribution is essential. Unlike wall-mounted systems, the ceiling cassette integrates discreetly into the ceiling while distributing air in four directions.


Why choose an LGRED 48,000 BTU ceiling cassette?

Truly effective 360° air distribution

One of the major advantages of this unit is its 4-independent-direction distribution system. Each motorized louver can be adjusted individually to optimize airflow according to the room's configuration.

In our installations in Montreal and Montérégie, we find that this type of distribution allows for:

  • Uniform temperature without cold or hot spots
  • Reduced occupant complaints
  • Better overall energy efficiency

Performance adapted to Quebec's climate

This LGRED model is designed to operate efficiently down to -25°C for heating, making it a reliable solution for the region's winters.

According to the manufacturer's technical data, LGRED systems use an inverter compressor that precisely modulates capacity according to actual demand. This means:

  • Fewer start/stop cycles
  • Optimized energy consumption
  • Extended lifespan

Detailed technical specifications

Power and efficiency

  • Cooling Capacity: 48,000 BTU
  • Heating Capacity: stable performance down to -25°C
  • High SEER2 (seasonal efficiency)
  • Efficient HSPF2 for heating

This power level is ideal for:

  • Large open-plan areas
  • Businesses with suspended ceilings
  • Multi-station workspaces

R-32 refrigerant: efficiency and environment

The system uses R-32 gas, known for:

  • Its low environmental impact
  • Its superior energy efficiency
  • Its better thermal performance

The technical manual confirms that R-32 has a lower global warming potential than R410A while improving the overall system performance.


HVAC installation: what we do differently at AirGreen

Comprehensive technical study before installation

Unlike many installers, we analyze:

  • The actual thermal load
  • Ceiling height
  • Zone layout
  • Structural constraints

This is crucial, as poor system design (piping length, sizing) can directly affect performance.

Real-life installation example in Laval

In a recent project in Laval, we installed this model in a 2,800 sq ft commercial space:

Initial problem:

  • Old, improperly sized system
  • Hot zones near windows
  • Excessive noise

AirGreen Solution:

  • Strategic repositioning of the cassette
  • Adjustment of directional louvers
  • Improved pipe insulation

Result:

  • Uniform temperature throughout the space
  • Reduced perceived noise
  • Measurable decrease in energy consumption

Advanced features that make a difference

Smart control and WiFi (optional)

With the WiFi module, you can:

  • Control temperature remotely
  • Program schedules
  • Monitor consumption

Sensors and automation

The system includes:

  • Thermistors for temperature measurement
  • Intelligent control algorithms
  • Automatic airflow adjustment

These elements allow for precise regulation of indoor comfort.

High-performance dehumidification function

With a capacity of 11.5 pints/hour, this unit is particularly effective in environments that are:

  • Humid
  • Highly trafficked
  • Subject to temperature variations

Installation: common mistakes to avoid

At AirGreen, we often correct mistakes made by other installers:

1. Incorrect positioning in the ceiling

A misplaced cassette leads to:

  • Poor air circulation
  • Uncomfortable zones

2. Poorly designed piping

The manufacturer emphasizes the importance of refrigerant circuit design to avoid:

  • Loss of performance
  • Pressure problems
  • Premature failure

3. Improper drainage management

Improper drain installation can cause:

  • Water leaks
  • Ceiling damage

HVAC maintenance: essential for preserving performance

To ensure system longevity, we recommend:

  • Filter cleaning (washable MERV 6)
  • Drain inspection
  • Full annual inspection

The system includes a filter easily accessible from below, simplifying regular maintenance.


Why choose AirGreen for this type of project?

Real expertise in commercial HVAC

We have installed this type of system in:

  • Restaurants in Montreal
  • Offices in Longueuil
  • Commercial premises on the North Shore

Our concrete advantages

  • Transparent pricing with no surprises
  • Certified and experienced technicians
  • 5M$ liability insurance
  • Prompt after-sales service

Rigorous approach

Each installation includes:

  • Pressure test
  • Complete vacuuming
  • Parameter calibration

Conclusion: an ideal solution for modern commercial spaces

The LGRED 3x3 48,000 BTU cassette ceiling unit is a robust, high-performance solution perfectly adapted to Quebec's climatic realities. It offers an excellent balance between comfort, energy efficiency, and architectural discretion.

At AirGreen, we recommend this model for clients seeking a reliable, durable, and optimized solution for commercial or professional spaces.


Contact AirGreen now

Are you looking for professional HVAC installation in Montreal, Laval, Longueuil, on the North Shore, or the South Shore?

Contact us today for:

  • A quick quote
  • A complete technical evaluation
  • Advice tailored to your project

AirGreen – Your HVAC expert in Quebec.