How to Pick the Perfect Mitsubishi Mini-Split Condenser
If you're struggling to keep your home or office comfortable, you are not alone...
Local Pickup FAQ's
On Sale
Hover to zoom
1 of 5
LG Mid Static Concealed Duct Mini Split Heat Pump System - Single-Zone - 12k BTU - 16.4 SEER2 - R-32
Model:
KSUJB121A
+
Share This Product
Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
7
These accessories are required to properly setup/install this product.
Model: MLS143812-15
Length (ft)
$150.00
In-Stock
Model: UC1636-3
$44.00
In-Stock
$20.00
In-Stock
Model: 20650
$19.00
In-Stock
Model: ICM517A
$70.00
In-Stock
$13.94
In-Stock
$105.62
In-Stock
Optional Accessories
14
Model: ASP-MW-UNI
$296.32
In-Stock
Model: 84099
$5.30
In-Stock
Model: ZRTBS01
$57.00
In-Stock
Model: PDRYCB100
$104.00
Model: PWFMDD200
$99.00
In-Stock
Model: PZCWRC1
$29.00
In-Stock
Model: PREMTBVC3
$269.00
Only 2 In-Stock
$320.00
In-Stock
Model: ZLABGP01A
$98.00
Only 4 In-Stock
Model: PREMTBVC2
$249.00
In-Stock
Model: PREMTC00U
$167.00
In-Stock
Model: PQSH1202
$166.00
Features
- 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.
- Inverter Technology
- LG's heat pump systems are designed with efficient inverter technology. An electronic expansion valve and a variable speed compressor carefully regulate the refrigerant flow, reducing energy consumption and allowing for consistent, accurate temperatures.
- Quiet Design
- The KNUJB121A indoor unit features a cross flow fan that restricts the pressure of air flow and lowers sound levels. Both the outdoor and indoor units enjoy reduced electrical and mechanical sound thanks to their brushless direct current fan motors.
- Gold Fin Protection
- To ensure the reliability and longevity of the KUSXB121A's heat exchanger, LG employs a Gold Fin coating that prevents corrosion and improves durability.
- 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.
- Jet Temperature Control
- Quickly get your zone comfortable with the Jet Heat and Jet Cool modes. With the press of a button, your system will temporarily adjust the set point and fan speed to provide rapid heating or cooling.
- Sleep Mode
- With the Sleep Mode and Timer functions, you can set the indoor unit to save energy at night. Sleep Mode will incrementally adjust temperature for an hour before the Timer function automatically deactivates the unit.
- Condensate Protection
- Condensate overflow can damage your indoor unit and your home. An internal condensate pump with 27.5" of lift protects the KNUJB121A 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 KNUJB121A 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.
- Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor units.
- Disconnect Box & Electrical Whip Kit - The Disconnect Box & Whip Kit provides a safe and simple way to connect your outdoor condenser to your fuse box.
- Connecting Wire - LG's new R-32 mini split units require a 14 AWG 5-conductor cable. This cable provides power to your indoor units from your outdoor condenser.
- Outdoor Condenser Plastic Pad or Wall Bracket - We recommend outdoor condensers should not be placed directly on the ground. An outdoor condenser pad or wall bracket will provide a stable way to mount your condenser free from obstructions and debris. Adding these accessories to your order will provide a complete, ready-to-install mini split system. All Mini Split Systems require one Primary Mini Split Installation Kit.
LG's devotion to providing efficient ductless solutions can be seen across their entire catalog. The Mid Static line of single zone concealed duct systems is perfect for homes that want to add zoned comfort without mounting a unit on the wall. They excel at providing comfort to wide open rooms, and by installing the indoor unit in a short ducting run, you can hide it from sight completely. The KSUJB121A indoor unit's sound levels are as low as 28 dB to ensure that your system isn't just unseen, but unheard as well. In applications where wall space is at a premium or duct work is easily accessible, the KSUJB121A is a brilliant addition.
Product Includes
Product Note
This product requires the following accessories for installation:
Specifications
Product Includes
KSUJB121A
General Information
Type
Concealed Duct
Product Line
Mid-Static Ducted
Product Category
Mini Split Heat Pump System
Operating Mode
Operating Mode
Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements. Learn More
Heating and Cooling
Number of Zones
Number of Zones
A zone is a room or area within a building that has its own temperature control.
1
Refrigerant Type
R-32
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
12
Outdoor Unit Size
12000 BTU
DOE Regional Compliance
DOE Regional Compliance
In 2015, the US Department of Energy broke the country into three regions - North, Southeast, and Southwest - and set legal standards for energy efficiency within each region. Learn More
Nationwide
Line Set Size
1/4" x 3/8"
Performance
Cooling BTU
12000
Cooling Capacity
12000 BTU
Heating Capacity
15000 BTU
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
31 dB
Low Ambient Heating
Yes
Minimum Outdoor Temperature for Heating
Minimum Outdoor Temperature for Heating
This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures. Learn More
-4 F
Minimum Outdoor Temperature for Cooling
5 F
SEER2
SEER2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. SEER2 (Seasonal Energy Efficiency Ratio) is a measurement of cooling efficiency over a typical cooling season. It is useful for comparing energy efficiency of cooling systems. The higher the SEER2, the more energy efficient the system.
16.4
EER2
EER2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. EER2 (Energy Efficiency Ratio) is a measurement of cooling efficiency under fixed conditions. It is useful for comparing units that will operate consistently under one set of conditions (e.g. server room). The higher the EER2, the more efficient the system.
12.0
HSPF2
HSPF2
The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. HSPF2 (Heating Seasonal Performance Factor) is a measure of heating efficiency for heat pumps. It is useful for comparing energy efficiency of heat pumps. The higher the HSPF2, the more efficient the system.
10.5
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
13.4 Amps
Recommended Breaker Size
15 Amps
Dimensions
Suction Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Weight
136.7 Pounds
Shipping Weight
151.1 Pounds
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
AHRI Certified
Yes
KUSXB121A
General Information
Type
Outdoor Condenser
Product Category
Mini Split System Components
Operating Mode
Operating Mode
Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements. Learn More
Heating and Cooling
Maximum Number of Zones
1
Multi-Zone Compatible
No
Refrigerant Type
R-32
Installation Location
Outdoor
Base Pan Heater Included
No
Performance
Cooling BTU
12000
Cooling Capacity
11100 BTU
Heating Capacity
14000 BTU
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
52 dB
Low Ambient Heating
Yes
Minimum Outdoor Temperature for Heating
Minimum Outdoor Temperature for Heating
This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures. Learn More
-4 F
Minimum Outdoor Temperature for Cooling
5 F
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Minimum Circuit Ampacity
13.4 Amps
Recommended Breaker Size
15 Amps
Dimensions
Maximum Line Length
65.6 Feet
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
21 1/2 Inches
Product Width
30 5/16 Inches
Product Depth
11 19/48 Inches
Product Weight
75 Pounds
Shipping Weight
79.4 Pounds
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
AHRI Certified
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Compressor Warranty
7 Years
KNUJB121A
General Information
Type
Concealed Duct
Product Line
Multi F
Product Sub-line
Mid-Static Ducted
Product Category
Mini Split System Components
Operating Mode
Operating Mode
Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements. Learn More
Heating and Cooling
Multi-Zone Compatible
Yes
Refrigerant Type
R-32
Indoor Unit Size(s)
Indoor Unit Size(s)
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
12
Installation Location
Indoor
Performance
Cooling BTU
12000
Cooling Capacity
12000 BTU
Heating Capacity
15000 BTU
Moisture Removal
1.27 Pints/Hour
Minimum Sound Level
28 dB
Maximum Sound Level
Maximum Sound Level
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB. Learn More
31 dB
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
9 37/48 Inches
Product Width
35 9/16 Inches
Product Depth
24 3/8 Inches
Product Weight
61.7 Pounds
Shipping Weight
71.7 Pounds
Certifications
CSA Listed
Yes
AHRI Certified
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
PREMTC00U
General Information
Type
Mini Split Controller
Product Category
Mini Split Accessories
Maximum Number of Zones
16
Power Source
Hard-Wired
Dimensions
Product Height
4 3/4 Inches
Product Width
5/8 Inch
Product Length
2 3/4 Inches
Product Weight
0.18 Pounds
Overview
Product Category
Mini Split Accessories
PZCWRC1
General Information
Type
Wire Kit
Product Category
Mini Split Accessories
Dimensions
Product Length
33 Feet
Product Weight
0.25 Pounds
Certifications
Country of Origin
Korea
Overview
Product Category
Mini Split Accessories
Reviews
LG KSUJB121A Reviews & Ratings
Be the First to Write a Review
Do you own this product?
Please share your insights with fellow shoppers.
Please share your insights with fellow shoppers.
How-To Articles
What You Should Know About Mini-Split Wiring
Although they are easier to install than central air conditioning systems, mini...
How to Pick the Perfect Mini Split Wall Mounted Indoor Unit
Wall-mounted units are the most commonly found, most affordable option for indo...
eComfort How-To Library
Articles, Tips and Buying Guides from Our Experts
Manuals
Ask A Question!
*Required Fields
+
Thank You For Submitting Your Question
Your submission has been sent successfully. Please give our experts up to two business days to respond.
Media Gallery
LG Mid Static Concealed Duct Mini Split Heat Pump System - Single-Zone - 12k BTU - 16.4 SEER2 - R-32
Customer Review Images
