Name: LG 18,000 BTU 21 SEER2 Dual Zone Mid Static Ducted Mini Split Heat Pump System 9+9 R32 Refrigerant | KUMXB481A-KNUJB091A-KNUJB091A-PMBD3630ZR
Brand: LG
SKU: KUMXB481A-KNUJB091A-KNUJB091A-PMBD3630ZR
Price: 10118.53 USD
Availability: InStock

LG 18,000 BTU 21 SEER2 Dual Zone Mid Static Ducted Mini Split Heat Pump System 9+9 R32 Refrigerant | KUMXB481A-KNUJB091A-KNUJB091A-PMBD3630ZR

Description

Overview

This LG Multi F MAX heat pump system pairs the KUMXB481A outdoor unit with 2 LG convertible mid static ducted indoor units for dual-zone heating and cooling. Every indoor unit in this system is the same style, so each room gets matching appearance, airflow and controls. The system runs on 208/230V, 1-phase, 60 Hz power and uses R-32 refrigerant.

What Is Included

1 x KUMXB481A multi-zone outdoor unit (up to 8 indoor units through branch distribution units, LG R1 twin rotary inverter compressor)
2 x KNUJB091A (9,000 BTU LG convertible mid static ducted indoor unit)
1 x PMBD3630ZR 3-port branch distribution unit

Performance

LG rates Multi F MAX systems by total connected indoor capacity. At 18,000 BTU/h connected (ducted), this system is rated at 21 SEER2, 14.5 EER2 and 10.2 HSPF2, with a rated cooling capacity of 18,000 BTU/h and a rated heating capacity of 20,700 BTU/h. Heating operation is rated down to -4 F outdoor temperature (wet bulb) and cooling operation from 14 F to 118 F.

Comfort and Noise

Each zone has its own indoor unit and set point, so occupied rooms can be conditioned independently while unused rooms stay idle. The inverter compressor adjusts its speed to match the load, which holds temperatures steadily and reduces on/off cycling.

Smart Features

Wi-Fi control through the LG ThinQ app is available with the optional PWFMDD200 Wi-Fi module. Ducted indoor units require a wired controller, sold separately (for example PREMTB101 or PREMTA201).

Use Case Fit

Concealed ducted indoor units sit in an attic, crawlspace, closet or soffit and deliver air through ductwork, keeping equipment out of sight. Confirm room loads, line set lengths and electrical requirements before ordering. Professional installation is recommended.

Value and Reliability

Bundling the outdoor unit with matched indoor units and branch distribution units in one product simplifies ordering. Warranty: 7 Years Compressor & 5 Years Parts | Registration Required within 60 Days of Purchase.

Key Features

Dual-zone system: 9K + 9K
21 SEER2 / 10.2 HSPF2
R-32 refrigerant
Heating down to -4 F
Single indoor style throughout: LG convertible mid static ducted

Extra Information

Find your comfort-ready size with confidence

Get a fast, learning-friendly estimate for tons and BTUs, then review it with a Pro to dial in the perfect fit for your home.

Quick sizing snapshot

Enter your home size and a few basics to see a quick HVAC365 sizing snapshot you can review with a Professional.

Home size (sq ft)

Enter at least 100 sq ft.

Use conditioned square footage only; skip garages and unfinished basements.

Climate

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Home type

Select your home type.

Shared walls and insulation levels change the load—pick what matches your structure.

System type

Choose a system type.

Match the system to your ductwork, fuel, or preferred heat source for best comfort.

This is a sizing estimate for general guidance only. Always confirm final size, duct design, and fuel type with a Professional before purchasing equipment or pulling permits.

Brand:

Weight:

335.70 LBS

Prop 65 Warning:

Yes

Safety Information:

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Cooling Capacity (BTU):

48,000

Capacity (Tons):

Zones:

Mount Type:

Ducted

System Type:

Heat Pump

SEER2:

20+ SEER2

EER2:

13+ EER2

HSPF2:

10+ HSPF2

Cold Climate:

Minimum Heating Temp (°F):

-4

Compressor Stages:

Variable Speed

DOE Regional Compliance:

Nationwide

Refrigerant Type:

R-32

Voltage / Phase:

208/230V 1-Phase

Sound Level Outdoor (dB):

53 / 55 (cool/heat)

Indoor Unit Combination:

9K + 9K

Wi-Fi Control:

Optional Kit (PWFMDD200)

Product Line:

LG Multi F MAX

AHRI Rating Basis:

Ducted rating at this total connected capacity (LG Combination Data Manual)

Branch Boxes Included:

1 x PMBD3630ZR

Indoor Unit KNUJB091A - Quantity:

Branch Box PMBD3630ZR - Quantity:

Outdoor Unit KUMXB481A - Unit Type:

Multi-Zone Outdoor Unit (Multi F MAX)

Outdoor Unit KUMXB481A - Cooling Capacity (BTU/h):

48,000

Outdoor Unit KUMXB481A - Heating Capacity (BTU/h):

54,000

Outdoor Unit KUMXB481A - Maximum Indoor Units:

Outdoor Unit KUMXB481A - Minimum Indoor Units:

Outdoor Unit KUMXB481A - Connected Indoor Capacity Range (BTU/h):

18,000 - 65,000

Outdoor Unit KUMXB481A - Connection Method:

Branch distribution unit(s) required

Outdoor Unit KUMXB481A - Compressor:

LG R1 Compressor - Twin Rotary Inverter

Outdoor Unit KUMXB481A - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Outdoor Unit KUMXB481A - MCA / MOCP:

33.3 A / 40 A

Outdoor Unit KUMXB481A - Rated Amps Cool / Heat:

24.3 / 24.3 A

Outdoor Unit KUMXB481A - Unit Dimensions (W x D x H):

37.41 in x 13 in x 54.34 in

Outdoor Unit KUMXB481A - Liquid Line Size:

3/8 in

Outdoor Unit KUMXB481A - Vapor Line Size:

3/4 in

Outdoor Unit KUMXB481A - Cooling Operating Range:

14 to 118 F DB (-4 F with wind baffle kit)

Outdoor Unit KUMXB481A - Heating Operating Range:

-4 to 64 F WB

Outdoor Unit KUMXB481A - Sound Level (dB):

53 / 55 (cool/heat)

Outdoor Unit KUMXB481A - Maximum Total Piping Length:

475.7 ft

Outdoor Unit KUMXB481A - Unit Weight:

194 lb

Indoor Unit KNUJB091A - Unit Type:

Convertible Mid Static Ducted Indoor Unit

Indoor Unit KNUJB091A - Cooling Capacity (BTU/h):

9,000

Indoor Unit KNUJB091A - Heating Capacity (BTU/h):

13,500

Indoor Unit KNUJB091A - Unit Dimensions (W x D x H):

35.44 in x 27.56 in x 9.66 in

Indoor Unit KNUJB091A - Liquid Line Size:

1/4 in

Indoor Unit KNUJB091A - Vapor Line Size:

3/8 in

Indoor Unit KNUJB091A - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Indoor Unit KNUJB091A - Controller:

Wired (sold separately)

Indoor Unit KNUJB091A - External Static Pressure:

Up to 0.6 in WG

Indoor Unit KNUJB091A - Rated Amps:

1.7 A

Indoor Unit KNUJB091A - Power/Communication Wire:

4 x 14 AWG

Indoor Unit KNUJB091A - Unit Weight:

61.7 lb

Branch Box PMBD3630ZR - Unit Type:

3-Port Branch Distribution Unit (R-32)

Branch Box PMBD3630ZR - Ports:

Branch Box PMBD3630ZR - Maximum Capacity per Port (BTU/h):

24,000

Branch Box PMBD3630ZR - Maximum Total Capacity (BTU/h):

72,000

Branch Box PMBD3630ZR - Outdoor Side Connection:

3/8 in liquid / 3/4 in vapor (brazed)

Branch Box PMBD3630ZR - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Branch Box PMBD3630ZR - Installation:

Indoor

Warranty Information

7 Years Compressor & 5 Years Parts | Registration Required within 60 Days of Purchase

Please Note: To validate the manufacturer's warranty, equipment must be installed by a qualified licensed professional in accordance with local codes and the manufacturer's installation requirements.

2023 Energy Standards

Department of Energy (DOE) State Regulations – Effective 2023

Click the link below to view the energy standards applicable to your region.

DOE State Standards Document

Department of Energy (DOE) State Regulations – Effective 2023

Click the link below to view the energy standards applicable to your region.

DOE State Standards Document

LG 18,000 BTU 21 SEER2 Dual Zone Mid Static Ducted Mini Split Heat Pump System 9+9 R32 Refrigerant | KUMXB481A-KNUJB091A-KNUJB091A-PMBD3630ZR

LG

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