Name: LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A
Brand: LG
SKU: KUMXB301A-KNMKB091A-KNMKB121A
Price: 7563.12 USD
Availability: InStock

LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A

Description

Overview

This LG Multi F heat pump system pairs the KUMXB301A outdoor unit with 2 LG low 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 KUMXB301A multi-zone outdoor unit (4 direct ports, LG R1 twin rotary inverter compressor)
1 x KNMKB091A (9,000 BTU LG low static ducted indoor unit)
1 x KNMKB121A (12,000 BTU LG low static ducted indoor unit)

Performance

This exact ducted combination (9K + 12K) is listed in the LG Combination Data Manual at 18.9 SEER2, 12.4 EER2 and 8.7 HSPF2, with a rated cooling capacity of 21,000 BTU/h and a rated heating capacity of 23,100 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 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 + 12K
18.9 SEER2 / 8.7 HSPF2
R-32 refrigerant
Heating down to -4 F
Single indoor style throughout: LG low 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:

225.40 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):

30,000

Capacity (Tons):

2.5

Zones:

Mount Type:

Ducted

System Type:

Heat Pump

SEER2:

18 SEER2

EER2:

12 EER2

HSPF2:

8 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):

51 / 54 (cool/heat)

Indoor Unit Combination:

9K + 12K

Wi-Fi Control:

Optional Kit (PWFMDD200)

Product Line:

LG Multi F

AHRI Rating Basis:

Rated combination listed in the LG Combination Data Manual (ducted)

Indoor Unit KNMKB091A - Quantity:

Indoor Unit KNMKB121A - Quantity:

Outdoor Unit KUMXB301A - Unit Type:

Multi-Zone Outdoor Unit (Multi F)

Outdoor Unit KUMXB301A - Cooling Capacity (BTU/h):

30,000

Outdoor Unit KUMXB301A - Heating Capacity (BTU/h):

32,000

Outdoor Unit KUMXB301A - Maximum Indoor Units:

Outdoor Unit KUMXB301A - Minimum Indoor Units:

Outdoor Unit KUMXB301A - Connected Indoor Capacity Range (BTU/h):

14,000 - 40,000

Outdoor Unit KUMXB301A - Connection Method:

4 direct ports

Outdoor Unit KUMXB301A - Compressor:

LG R1 Compressor - Twin Rotary Inverter

Outdoor Unit KUMXB301A - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Outdoor Unit KUMXB301A - MCA / MOCP:

19 A / 25 A

Outdoor Unit KUMXB301A - Rated Amps Cool / Heat:

14.15 / 14.15 A

Outdoor Unit KUMXB301A - Unit Dimensions (W x D x H):

37.41 in x 13 in x 32.84 in

Outdoor Unit KUMXB301A - Liquid Line Size:

1/4 in (per port)

Outdoor Unit KUMXB301A - Vapor Line Size:

3/8 in (per port)

Outdoor Unit KUMXB301A - Cooling Operating Range:

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

Outdoor Unit KUMXB301A - Heating Operating Range:

-4 to 64 F WB

Outdoor Unit KUMXB301A - Sound Level (dB):

51 / 54 (cool/heat)

Outdoor Unit KUMXB301A - Maximum Total Piping Length:

246.1 ft

Outdoor Unit KUMXB301A - Unit Weight:

140 lb

Indoor Unit KNMKB091A - Unit Type:

Low Static Ducted Indoor Unit

Indoor Unit KNMKB091A - Cooling Capacity (BTU/h):

9,000

Indoor Unit KNMKB091A - Heating Capacity (BTU/h):

10,400

Indoor Unit KNMKB091A - Airflow (CFM):

318 / 247 / 194 (H/M/L)

Indoor Unit KNMKB091A - Sound Level (dB):

30 / 26 / 23 (H/M/L)

Indoor Unit KNMKB091A - Unit Dimensions (W x D x H):

27.56 in x 27.56 in x 7.47 in

Indoor Unit KNMKB091A - Liquid Line Size:

1/4 in

Indoor Unit KNMKB091A - Vapor Line Size:

3/8 in

Indoor Unit KNMKB091A - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Indoor Unit KNMKB091A - Controller:

Wired (sold separately)

Indoor Unit KNMKB091A - Rated Amps:

0.40 A

Indoor Unit KNMKB091A - Power/Communication Wire:

4 x 14 AWG

Indoor Unit KNMKB121A - Unit Type:

Low Static Ducted Indoor Unit

Indoor Unit KNMKB121A - Cooling Capacity (BTU/h):

12,000

Indoor Unit KNMKB121A - Heating Capacity (BTU/h):

13,800

Indoor Unit KNMKB121A - Airflow (CFM):

353 / 300 / 247 (H/M/L)

Indoor Unit KNMKB121A - Sound Level (dB):

31 / 29 / 27 (H/M/L)

Indoor Unit KNMKB121A - Unit Dimensions (W x D x H):

35.44 in x 27.56 in x 7.47 in

Indoor Unit KNMKB121A - Liquid Line Size:

1/4 in

Indoor Unit KNMKB121A - Vapor Line Size:

3/8 in

Indoor Unit KNMKB121A - Voltage/Phase/Hz:

208-230 V / 1 Ph / 60 Hz

Indoor Unit KNMKB121A - Controller:

Wired (sold separately)

Indoor Unit KNMKB121A - Rated Amps:

0.80 A

Indoor Unit KNMKB121A - Power/Communication Wire:

4 x 14 AWG

Indoor Unit KNMKB121A - Unit Weight:

45.4 lb

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 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A

LG

Questions about LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A?

At a glance

Description

Overview

What Is Included

Performance

Comfort and Noise

Smart Features

Use Case Fit

Value and Reliability

Key Features

Extra Information

Warranty Information

2023 Energy Standards

Related Products

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LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A

LG

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LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A

Questions about LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB121A?

At a glance

Description

Overview

What Is Included

Performance

Comfort and Noise

Smart Features

Use Case Fit

Value and Reliability

Key Features

Extra Information

Warranty Information

2023 Energy Standards

Related Products

LG 21,000 BTU 18.9 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB361A-KNMKB091A-KNMKB121A

LG 21,000 BTU 18.5 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB181A-KNMKB091A-KNMKB121A

LG 21,000 BTU 18.6 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB241A-KNMKB091A-KNMKB121A

LG 21,000 BTU 20.8 SEER2 Dual Zone Low Static Ducted Mini Split Heat Pump System 9+12 R32 Refrigerant | KUMXB481A-KNMKB091A-KNMKB121A-PMBD3630ZR

LG 30,000 BTU 18.5 SEER2 Tri Zone Low Static Ducted Mini Split Heat Pump System 9+9+12 R32 Refrigerant | KUMXB301A-KNMKB091A-KNMKB091A-KNMKB121A