LG 42,000 BTU Multi F Convertible Mid Static Single Zone Concealed Duct Mini Split Air Handler - R32| 230V

SAVE $596.00
Ships in 5-7 Business Days
Free Shipping
By

LG

In stock
Model

KNSJB421A

ID

235780

Was $2,977.00 Your Low Price Special Price $2,381.00
 

LG 42,000 BTU Multi F Convertible Mid Static Single Zone Concealed Duct Mini Split Air Handler – R32 | 230V

This concealed duct (mid static) air handler is designed for powerful, discreet climate control in large spaces up to approximately 1,500–2,200 sq ft. Ideal for homes, offices, and light commercial applications, it installs above ceilings or in concealed spaces, delivering conditioned air through ductwork for a clean, minimal interior appearance while maintaining strong, even comfort throughout the zone.

Key Features

  • Covers up to 2,200 sq ft
  • Up to ~21 SEER2 efficiency when paired with compatible LG Multi F outdoor units
  • Built-in Wi-Fi compatibility for smart control and remote system management
  • Operates in a wide temperature range for reliable performance in mild to cold climates

Feature Highlights

Efficiency (SEER2)
When paired with an LG Multi F outdoor condenser, this concealed duct system can achieve high SEER2 efficiency, helping reduce energy consumption while maintaining consistent comfort. Inverter-driven compressor technology adjusts output dynamically based on demand, improving efficiency and reducing unnecessary energy use.

Quiet Operation
Because the air handler is installed out of sight in a ceiling or mechanical space, operational noise is significantly reduced in living areas. This makes it an excellent option for bedrooms, offices, and open-plan layouts where quiet comfort is important.

Right-Sized Power
With a 42,000 BTU capacity, this mid static ducted unit is ideal for larger spaces requiring strong, even airflow distribution through ductwork. It helps eliminate hot and cold spots by delivering balanced air across multiple vents, making it especially effective for open layouts or multi-room coverage within a single zone.

What's Included

  • Indoor concealed duct air handler — 42,000 BTU capacity
  • Compatible with LG Multi F outdoor condenser (sold separately)
  • Wireless remote control
  • Installation manual

Recommended Accessories

  • Refrigerant line set
  • Flexible ducting and supply/return grilles
  • Wall bracket or ceiling mounting hardware
  • Drain hose and insulation kit

Warranty

LG products include a 10-year warranty with the requirement that installation is completed by a licensed contractor and that the product is registered within 60 days of installation at https://lg-dfs-warranty.com/.

More Information
LG 42,000 BTU Multi F Convertible Mid Static Single Zone Concealed Duct Mini Split Air Handler - R32| 230V
FeatureSpec
SKUKNSJB421A
Weight (in lbs)110.67
Brand/ManufacturerLG
UPC195174080542
ControllerWireless Included
Cooling BTU42,000 BTU
Heating BTU48,000 BTU
Maximum CFM1130 Hi / 953 Med / 812 Lo CFM (Airflow)
Decibel Level (dBA)41-46 dBA
RefrigerantR32
Liquid Line 3/8"
Suction Line 5/8"
Electrical208-230V | 1Phase | 60Hz
BTU/Tonnage42,000 BTU/3.5 Ton
Mini Split TypeConcealed Duct
Zone CompatibilitySingle Zone
Height16.85"
Width30.43"
Depth57.09"
Warranty10 Year Compressor / 7 Years Parts Warranty with Online Registration
Resources You will need AdobeA® AcrobatA® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Write Your Own Review
You're reviewing:LG 42,000 BTU Multi F Convertible Mid Static Single Zone Concealed Duct Mini Split Air Handler - R32| 230V
Your Rating
Customer Questions
No Questions
Did you find what you were looking for?
blockboard tech