LG KNUDB181A Multi/Single Zone Ceiling Cassette with 18000 BTU Cooling Capacity, 20800 BTU Heating Capacity and Remote in White

LG's devotion to providing efficient ductless solutions can be seen across the Multi F line of indoor units. Part of the Four-Way Ceiling Cassette lineup of mini split indoor units, the unit combines powerful multi-directional air flow with a low-profile design, allowing you to heat and cool large rooms discreetly. Thanks to the recessed installation design, a grille less than 1" thick is the only visible part of the installed unit .

• AHRI Certified
• Jet Cool
• Sleep Mode

Enhanced Connectivity

LG's new R-32 mini split units require a 5-conductor cable (Not Included) instead of the standard 4-conductor, improving communication reliability and enabling a new leak detection feature.

Air Flow Options

The unit offers two automated air flow options: Swing Mode and Swirl Wind mode. Any of these modes can be activated to provide optimal circulation specific to your home.

Quiet Design

The unit can operate at volumes as low as 30 dB thanks to its advanced fan motor. The brushless direct current motor reduces electrical and mechanical sound while providing powerful air movement.

Automated Operation

Auto operation mode continually compares your zone's current and desired temperatures and uses that data to intelligently adjust the unit's fan speed and refrigerant flow to provide optimal comfort.

Condensate Protection

Condensate overflow can damage your indoor unit and your home. An internal condensate pump with 27.5" of lift protects the unit through reliable, effective condensate removal.

Dehumidify

LG's indoor units include a dehumidifying operation mode. In this mode, the unit's internal sensors monitor temperature and modify the set point and fan speed to remove moisture from the air.

Improved Air Quality

The unit features an anti-fungal filter to keep your air clean. This filter captures contaminants like dust and bacteria, and it is washable to ensure long term air quality.

Hot-Start

When the hot-start function is enabled, the unit's fan will not engage until the outdoor condenser has had the opportunity to warm the indoor coil. This prevents the unit from blowing cold air during heating operations.

*Note: Outdoor Unit Required to Operate

Matching Products

• Matching Single Zone Outdoor Unit KUSXB181A
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• Matching 30000 BTU Multi-Zone Outdoor Unit KUMXB301A
• Matching 36000 BTU Multi-Zone Outdoor Unit KUMXB361A
• Matching 48000 BTU Multi-Zone Outdoor Unit KUMXB481A
• Matching 54000 BTU Multi-Zone Outdoor Unit KUMXB541A
• Matching 60000 BTU Multi-Zone Outdoor Unit KUMXB601A
• Matching 18000 BTU LGRED Multi-Zone Outdoor Unit KUMXA181A
• Matching 24000 BTU LGRED Multi-Zone Outdoor Unit KUMXA241A
• Matching 30000 BTU LGRED Multi-Zone Outdoor Unit KUMXA301A
• Matching 36000 BTU LGRED Multi-Zone Outdoor Unit KUMXA361A
• Matching 42000 BTU LGRED Multi-Zone Outdoor Unit KUMXA421A

• Matching 48000 BTU LGRED Multi-Zone Outdoor Unit KUMXA481A

Why should you buy LG KNUDB181A ?

• Recessed Installation
  Designed for ceiling installation with a grille less than 1" thick, ensuring a discreet and modern appearance.
• Compact Dimensions
  Measures 24-13/32" (W) x 24-13/32" (D) x 10-63/64" (H), fitting standard ceiling grids for easy integration.
• Four-Way Airflow
  Equipped with four air outlets, providing consistent and effective air distribution across the room.
• Quiet Performance
  Operates at sound pressure levels as low as 36 dB, thanks to its brushless DC motor, ensuring a tranquil environment.
• Jet Cool Mode
  Activates rapid cooling by temporarily adjusting the temperature and fan speed for 30 minutes, quickly bringing the room to a comfortable level.
• Auto Operation
  Continuously compares the room's current and desired temperatures to intelligently adjust fan speed and refrigerant flow for optimal comfort.
• Sleep Mode
  Gradually adjusts the temperature over an hour before the timer function automatically deactivates the unit, promoting energy savings during the night.
• Dehumidification Mode
  Monitors temperature and adjusts settings to effectively remove moisture from the air, enhancing indoor air quality.
• Condensate Protection
  Features an internal condensate pump with a 27.5" lift, ensuring reliable and effective condensate removal.
• Enhanced Connectivity
  Requires a 5-conductor cable for improved communication reliability and enabling a new leak detection feature.
• Control Options
  Comes with a wireless remote controller and is compatible with various control options, including MultiSITE CRC controllers and Wi-Fi modules (sold separately).

Frequently Asked Questions by Customers

• What is the LG KNUDB181A?
  Answer: The LG KNUDB181A is an 18,000 BTU ceiling cassette indoor unit designed for use in both single-zone and multi-zone mini-split systems. It is part of LG’s Multi F Four-Way Ceiling Cassette lineup, offering efficient heating and cooling solutions for residential and light commercial spaces.
• What are its cooling and heating capacities?
  Answer: The unit provides a nominal cooling capacity of 18,000 BTU/h and a nominal heating capacity of 20,800 BTU/h, making it suitable for medium to large-sized rooms.
• What type of refrigerant does it use?
  Answer: The KNUDB181A utilizes R-32 refrigerant, known for its lower global warming potential compared to traditional refrigerants, contributing to more environmentally friendly operation.
• What are its airflow and sound levels?
  Answer: The unit features a brushless direct current motor, reducing electrical and mechanical sound while providing powerful air movement. It can operate at volumes as low as 36 dB, ensuring quiet operation.
• What is its energy efficiency rating?
  Answer: The KNUDB181A boasts a SEER2 rating of 20.5, indicating high energy efficiency and potential cost savings on energy bills.
• What is the recommended operating voltage?
  Answer: The unit operates within a voltage range of 208V to 230V, compatible with standard residential electrical systems.
• What are its dimensions and weight?
  Answer: The indoor unit measures approximately 24 13/32″ wide, 24 13/32″ deep, and 10 63/64″ high. It weighs about 30.9 lbs, with the grille adding approximately 6.6 lbs.
• What are the installation requirements?
  Answer: Installation requires a 5-conductor cable (not included) for communication and power supply, as well as proper refrigerant line connections. It's essential to follow local building codes and standards during installation.

Pros

1. High Performance

• Cooling Capacity: 18,000 BTU/hr
• Heating Capacity: 20,800 BTU/hr
• Refrigerant: R-32, known for improved energy efficiency and reduced environmental impact
• SEER2 Rating: 20.5, indicating high energy efficiency
• EER2 Rating: 13

2. Quiet Operation

• Sound Levels: Operates as low as 36 dB(A), ensuring minimal noise disruption

3. Advanced Airflow Features

• Swing Mode: Automatically adjusts airflow direction for optimal comfort
• Swirl Wind Mode: Provides uniform air distribution throughout the room

4. Enhanced Connectivity

• Wiring: Requires a 5-conductor cable instead of the standard 4-conductor, improving communication reliability and enabling a new leak detection feature

5. Compact and Aesthetic Design

• Dimensions: Approximately 10.5 inches in height, with a 24.4-inch square grille
• Installation: Recessed installation with a low-profile grille for a sleek appearance

Cons

1. Installation Requirements

• Professional Installation: Requires licensed HVAC professionals for proper setup
• Grille Sold Separately: Grille model PT-QAGW0 is not included and must be purchased separately

2. No Built-in Voice Control

• Limited Smart Integration: While compatible with the LG ThinQ app, it does not support direct voice control via Alexa or Google Assistant

Conclusion

The LG KNUDB181A is a high-performance ceiling cassette unit ideal for both residential and commercial applications. Its efficient heating and cooling capabilities, coupled with advanced features like quiet operation and smart connectivity, make it a standout choice for those seeking comfort and energy savings. However, potential buyers should consider the installation requirements and the need for a separate grille.