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54,000 BTU 18.4 SEER Ductless Mini Split Heat Pump Outdoor Unit 208-230V
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About this Item

LG Multi F Outdoor Series, 4-1/2 Ton, Inverter-Driven, 8:1 Multi-Zone, Ductless Split Heat Pump Outdoor Unit - 54,000 BTU, R-410a, 208/230 VAC
  • Energy Star Estimated Cooling Cost: $775
  • SEER: 18.4
This item has been retired by the manufacturer and is no longer available. You may find similar products by viewing our selection of Multi Zone Components below.
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Product Highlights

This 54,000 BTU LG Multi F Inverter Heat Pump Outdoor Unit is the perfect control center for your two to eight zone application. This quiet condenser is compatible with all LG Multi F split indoor components and runs on eco-friendly R410A refrigerant.


  • Auto operation
  • Auto restart operation
  • Defrost/Deicing
  • GoldFin™ Anti-corrosion
  • Inverter (Variable Speed compressor)
  • Low ambient operation to 14°F (cooling mode)
  • Restart delay (3-minutes)
  • Self Diagnosis
  • Soft Start

How many BTUs do you need for your ductless split?

Please Note: Mini Split Systems must be installed by a licensed Contractor with an EPA Refrigerant Certification to qualify for warranty.

Air Conditioner BTU rating / per square foot chart:

9,000 BTU       250-350 sqft
12,000 BTU     350-500 sqft
18,000 BTU     500-750 sqft
24,000 BTU     750-1000 sqft
30,000 BTU     1000-1250 sqft

(BTU ratings are estimates only, based on 10ft ceilings, with great insulation and windows. Some factors may alter this calculation: lack of insulation, heavy sun, excessively hot regions, & tall ceilings)

Make sure you install a unit that is going to properly cool your square footage. An over-sized air conditioner is actually less effective — and wastes energy at the same time. Air conditioners remove both heat and humidity from the air. If the unit is too large, it will cool the room quickly, but only remove some of the humidity. This leaves the room with a damp, clammy feeling. A properly sized unit will remove humidity effectively as it cools.

Manuals & Docs

LG LMU540HV - 54,000 BTU 18.4 SEER Ductless Mini Split Heat Pump Outdoor Unit 208-230V
Weight 235.8959 Pound (lb.)
Height 57.5591 Inches (In)
Width 44.8819 Inches (In)
UPC 048231367806
Length 18.1496 Inches (In)
Brand LG
Model Family Multi F Outdoor
Equipment Type Heat Pump
SEER 18.40
EER (Energy Efficiency Ratio) 10.3
Refrigerant R-410a
Rated Cooling Capacity (BTU) 54,500
Rated Heating Capacity (BTU) 54,500
Nominal Capacity (BTU) 54,000
Voltage 208-230 VAC
Phase Single
Cycle/Hertz 60
Minimum Circuit Amps 26.4
Maximum Fuse Size 40
Suction Line Size 3/4"
Liquid Line Size 3/8"
Color Gray
Inverter Technology Yes
Sound Level (dBA) 56
Warranty Offered 7 Year Compressor - 5 Year Parts to Original Registered End-User with Proof of Proper Installation
Corrosion Protection Yes
Tonnage 4 1/2
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