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LG Concealed Duct 4-Zone System - 54,000 BTU Outdoor - 9k + 12k + 18k + 18k Indoor - 18.5 SEER2
Model:
L4H54D09121818-B
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Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- Inverter Technology
- LG's outdoor condensers 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.
- Gold Fin Protection
- To ensure the reliability and longevity of the LMU541HV's heat exchanger, LG employs a Gold Fin coating that prevents corrosion and improves durability.
- Quiet Design
- Thanks to brushless fan motors, both the outdoor and indoor units in this system produce less mechanical and electrical noise. A twin rotary compressor in the outdoor unit also limits vibration noise.
- Automated Operation
- Auto operation mode continually compares your zones' current and desired temperatures and uses that data to intelligently adjust fan speed and refrigerant flow to provide optimal comfort.
- Sleep Mode
- With the sleep mode and timer functions, you can set the indoor units to save energy at night. Sleep mode will incrementally adjust temperatures for an hour before the timer function automatically deactivates the units.
- Condensate Protection
- Condensate overflow can damage your indoor unit and your home. Internal condensate pumps with 27.5" of lift protect these indoor units through reliable, effective condensate removal.
- Improved Air Quality
- These mini split indoor units include anti-fungal filters to keep your air clean. These filters capture contaminants like dust and bacteria, and they are washable to ensure long term air quality.
- Dehumidify
- LG's multi-zone indoor units include a dehumidifying operation mode. In this mode, the units' internal sensors monitor temperature and modify the set point and fan speed to remove moisture from the air.
- Hot Start
- When the hot start function is enabled on a mini split indoor unit, the 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.
- Recommended line set sizes for indoor unit connectivity:
- LDN097HV4: 1/4" x 3/8" Line Set
- LDN127HV4: 1/4" x 3/8" Line Set
- LMDN186HV: 1/4" x 1/2" Line Set (Qty 2)
- A branch box with a 3/8" x 3/4" line set connection is also required. Additional branch boxes and line sets may be required based on your configuration.
- All LG branch boxes systems require a min of 16.4 feet of line set between the condenser and the branch box, from the branch box to the distribution box and from the distribution box to the indoor unit.
- All LG branch boxes systems require a min of 16.4 feet of line set between the condenser and the branch box, from the branch box to the distribution box and from the distribution box to the indoor unit.
- (1) LG - 54k BTU - Outdoor Condenser - For 2-8 Zones (LMU541HV)
- (2) LG - 18k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN187HV4)
- (1) LG - 12k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN127HV4)
- (1) LG - 9k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN097HV4)
- (1) LG Multi F - Branch Box - 4 Ports (PMBD3640)
- (4) LG Simple Remote Controller Wired (PREMTC00U)
- (4) LG 32 Feet Wired Remote Control Extension Cable (PZCWRC1)
- Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor units.
- Branch BoxAn LG branch box is required to connect this condenser to LG mini split indoor units.
- Drain Tubing - Drain tubing facilitates the reliable and effective removal of condensate from your system. It connects your indoor units to drain locations of your choosing. We recommend locally purchased PVC hard pipe for the condensate drain on cassette and concealed duct 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 - This durable, insulated wire provides power to your indoor units from your outdoor condenser.
- Base Pan Heater - The base pan heater prevents ice from building up on the outdoor unit. Excessive ice build will lead to performance issues and could damage your unit.
- 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.
LG's devotion to providing efficient ductless solutions can be seen across the Multi F line. This concealed duct ductless heat pump system pairs a powerful LMU541HV outdoor condenser with four concealed duct indoor units. These units are designed for installation in short-run ducting with low static pressures. With this system, you can add quiet zoned comfort to your home without mounting anything on your walls. Like a central system, small air registers all that your guests will see with this concealed duct heat pump system.
Product Includes
Product Note
Each indoor unit will include any port adapters necessary for multi-zone installation.This product requires the following accessories for installation:
LG products include a 10-year warranty with the requirement that installation is completed by a licensed contractor and that the product is registered at https://lg-dfs-warranty.com/ within 60 days of installation.
All Mini Split Systems require one Primary Mini Split Installation Kit. You may also require one or more Secondary Installation Kits if you have a Multi-Zone system. You will need a Secondary Installation Kit for each additional indoor unit.
LG products include a 10-year warranty with the requirement that installation is completed by a licensed contractor and that the product is registered at https://lg-dfs-warranty.com/ within 60 days of installation.
All Mini Split Systems require one Primary Mini Split Installation Kit. You may also require one or more Secondary Installation Kits if you have a Multi-Zone system. You will need a Secondary Installation Kit for each additional indoor unit.
Specifications
Product Includes
- (1) LG - 54k BTU - Outdoor Condenser - For 2-8 Zones (LMU541HV)
- (2) LG - 18k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN187HV4)
- (1) LG - 12k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN127HV4)
- (1) LG - 9k BTU - Low Static Concealed Duct Unit - For Multi or Single-Zone (LDN097HV4)
- (1) LG Multi F - Branch Box - 4 Ports (PMBD3640)
- (4) LG Simple Remote Controller Wired (PREMTC00U)
- (4) LG 32 Feet Wired Remote Control Extension Cable (PZCWRC1)
L4H54D09121818-B
Overview
Product Category
Mini Split Heat Pump System
General Information
Type
Concealed Duct
Product Line
Multi F
Product Sub-line
Low-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.
4
Refrigerant Type
R-410A
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.
9 + 12 + 18 + 18
Outdoor Unit Size
54000 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
Performance
Cooling Power Input
5192 Watts
Heating Power Input
5647 Watts
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
14 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.
18.5
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.
12.5
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.
9.3
Dimensions
Product Weight
402.72 Pounds
Shipping Weight
406.72 Pounds
Certifications
UL Listed
Yes
ETL Listed
Yes
AHRI Certified
Yes
ISO Certified
Yes
AHRI Reference Number
206717005
LMU541HV
General Information
Type
Outdoor Condenser
Product Line
Multi F
Product Sub-line
MAX
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
8
Multi-Zone Compatible
Yes
Refrigerant Type
R-410A
Installation Location
Outdoor
Branch Box Required
Branch Box Required
By making a single connection to the outdoor condenser, a branch box can supply the right amount of refrigerant to multiple indoor units. Learn More
Yes
Performance
Cooling BTU
54000
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
56 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
14 F
Electrical Data
Voltage
208/230 Volts
Phase
1
Frequency
60 Hz
Recommended Breaker Size
40 Amps
Dimensions
Maximum Line Length
475.7 Feet
Gas Connection Size
3/4 Inch
Liquid Connection Size
3/8 Inch
Product Height
54 17/48 Inches
Product Width
37 5/12 Inches
Product Depth
13 Inches
Product Weight
214 Pounds
Shipping Weight
236 Pounds
Certifications
ETL Listed
Yes
UL Listed
Yes
ISO 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
Overview
Product Category
Mini Split System Components
LDN187HV4
General Information
Type
Concealed Duct
Product Line
Multi F
Product Sub-line
Low-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-410A
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.
18
Installation Location
Indoor
Performance
Cooling BTU
18000
Cooling Capacity
18000 BTU
Maximum Air Flow
530 CFM
Minimum Air Flow
353 CFM
Minimum Sound Level
31 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
36 dB
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
1/2 Inch
Liquid Connection Size
1/4 Inch
Product Height
7 23/48 Inches
Product Width
38 17/48 Inches
Product Depth
27 9/16 Inches
Product Weight
48.5 Pounds
Shipping Weight
57.3 Pounds
Certifications
UL Listed
Yes
ETL Listed
Yes
ISO 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
Overview
Product Category
Mini Split System Components
LDN127HV4
General Information
Type
Concealed Duct
Product Line
Multi F
Product Sub-line
Low-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-410A
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
Maximum Air Flow
353 CFM
Minimum Air Flow
247 CFM
Minimum Sound Level
27 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
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
7 23/48 Inches
Product Width
38 17/48 Inches
Product Depth
27 9/16 Inches
Product Weight
51 Pounds
Shipping Weight
60 Pounds
Certifications
UL Listed
Yes
ETL Listed
Yes
ISO 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
Overview
Product Category
Mini Split System Components
LDN097HV4
General Information
Type
Concealed Duct
Product Line
Multi F
Product Sub-line
Low-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-410A
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.
9
Installation Location
Indoor
Performance
Cooling BTU
9000
Cooling Capacity
9000 BTU
Maximum Air Flow
318 CFM
Minimum Air Flow
194 CFM
Minimum Sound Level
23 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
30 dB
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/8 Inch
Liquid Connection Size
1/4 Inch
Product Height
7 23/48 Inches
Product Width
30 23/48 Inches
Product Depth
27 9/16 Inches
Product Weight
39 Pounds
Shipping Weight
46 Pounds
Certifications
UL Listed
Yes
ETL Listed
Yes
ISO 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
Overview
Product Category
Mini Split System Components
PMBD3640
General Information
Type
Branch Box
Product Line
Multi F
Product Category
Mini Split Accessories
Ports Quantity
4
Performance
Maximum Port Capacity
24000 BTU
Maximum Total Port Capacity
73000 BTU
Electrical Data
Power Consumption
32 Watts
Phase
1
Frequency
60 Hz
Dimensions
Suction Connection Size
3/4 Inch
Liquid Connection Size
3/8 Inch
Line Set A Liquid Connection
1/4 Inch
Line Set A Gas Connection
3/8 Inch
Line Set B Liquid Connection
1/4 Inch
Line Set B Gas Connection
3/8 Inch
Line Set C Liquid Connection
1/4 Inch
Line Set C Gas Connection
3/8 Inch
Line Set D Liquid Connection
1/4 Inch
Line Set D Gas Connection
3/8 Inch
Product Height
5 11/12 Inches
Product Width
9 41/48 Inches
Product Depth
11 13/16 Inches
Product Weight
16 Pounds
Shipping Weight
18 Pounds
Certifications
Country of Origin
Korea
Overview
Product Category
Mini Split Accessories
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
(3)
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LG Concealed Duct 4-Zone System - 54,000 BTU Outdoor - 9k + 12k + 18k + 18k Indoor - 18.5 SEER2
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