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Product Details

Year-round comfort with LGRED° Heat Technology for low temperature heating down to -13°F is standard on LG's NEW Multi-F Systems!

With the new LG Flex Multi-Split Six-Zone system, you can provide the right temperature and customize the look in up to six rooms. The new LMU420HHV offers year round comfort control with its 42,000 BTU configurable 6-zone mini split air conditioning and heating system. LG's Flex Multi-Split Six-Zone air conditioner system gives you the opportunity to install as few as two or up to six independently operated, indoor units virtually anywhere in your home.

Featuring LGRED° Heat Technology, this system can be used as a primary heat source in most of the country. With enhanced cooling and heating ranges, LGRED° Heat Technology allows your multi-zone system to offer 100% heating capacity even when temperatures get down as low as -13°F! And, if you need the air conditioner, you can run the AC when it is as cold as 14°F outside. This is a great solution for rooms that need to stay cool. Add a Low Ambient Kit (sold separately) for cooling operation down to -4°F.

This system combines individual room temperature control with low operating costs. The LMU420HHV can be easily installed without major renovations. Each unit requires a line set to connect it to the outside unit. The line sets (sold separately), are run through the interior wall, requiring about a 3” hole, to the outdoor unit.

The LMU420HHV outdoor unit offers standard features including a super energy efficient variable speed inverter compressor, defrost/deicing capabilities, three minute restart delay, and a self diagnosis system. It also includes soft start which reduces power surges on the electrical system. It operates when the outside temperature is as low as 14°F in the cooling mode (down to -4°F with a low ambient kit installed) and from -13°F to 75°F in the heating mode. To top it all off, it uses environmentally friendly R-410A refrigerant and is precharged for up to 131’ of line.

Net Weight (lbs.)
 
223
Number of Zones
 
2
 
3
 
4
 
5
 
6
Maximum Number of Indoor Units
 
6
EER
 
14
SEER (non-ducted indoor units)
 
20.5
SEER (ducted indoor units)
 
19
SEER (ducted & non ducted)
 
19.8
Energy Star
 
Yes
Cooling Amps
 
23.6
Cooling BTUs
 
42000
Includes Heat Pump
 
Yes
Heat Pump BTUs
 
45000
Heat Pump Heating Amps
 
24.6
HSPF (non-ducted)
 
11
Outdoor Unit Noise Level (dBA)
 
57
Voltage
 
208-230V
Circuit Breaker Size (Amps)
 
40
Operating Range - Cooling
 
-4° F ~ 118° F
Operating Range - Heating
 
-13° F ~ 75° F
Min. Outdoor Temp for Heat °F
 
-13
Inverter Technology
 
Yes
Pipe Length (No Addl Refr Req)
 
131.2
Max. Pipe Length/Zone (ft.)
 
49
Outdoor Unit Width (in.)
 
37.406 "
Outdoor Unit Depth (in.)
 
13 "
Outdoor Unit Height (in.)
 
54.344 "
Outdoor Unit Weight (lbs.)
 
222.7
Certifications
 
AHRI Certified
Parts Warranty
 
10 Years
Compressor Warranty
 
10 Years
Labor Warranty
 
None