Name: LG Art Cool Mirror 9,000 BTU
Brand: LG

4.2/5#13 of 27 in 9,000 BTU mini-splits
4.2

For mild to moderate winters: it heats only down to −4 °F and loses some of its heat in deep cold.

9,000 BTUSize
9,500 Btu/hHeat at 5 °F
87%Kept at 5 °F
10.9 / 23.8HSPF2 / SEER2
Pro installInstall

See it at LG

No store we check sells it online; the maker lists where to buy or who installs it.

Pros

10-year parts and compressor warranty once registered
Line set can run up to 82 ft, so the outdoor unit can sit well away from the room

Cons

Keeps heating only down to −4 °F
Needs a licensed HVAC installer: a self-install voids the warranty

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Cold weather keeps 87% of its heat at 5 °F, heats down to -4 °F58
Efficiency 10.9 HSPF2, 23.8 SEER2, COP 2.00 at 5 °F80
Warranty 10-year compressor, 10-year parts100
Noise indoor unit from 21 dB(A)90

Specifications

Capacity (certified)
Size (nominal)	9,000 BTU
Cooling at 95 °F	9,000 Btu/h
Heating at 47 °F	10,900 Btu/h
Heating at 17 °F (max)	11,200 Btu/h
Heating at 5 °F (max)	9,500 Btu/h
Heat kept at 5 °F	87%
Efficiency (certified)
HSPF2 (Region IV)	10.9
SEER2	23.8
EER2	14.9
COP at 5 °F	2.00
ENERGY STAR	ENERGY STAR Cold Climate
AHRI certificate	215413006
Operating range
Heats down to	-4 °F
Cooling range	14 to 118 °F
Installation
Installed by	Professional (sold through installers)
Line set connection	Flare fittings (vacuum pump needed)
Line set	up to 82 ft
Voltage	230 V
Refrigerant	R-32
Indoor unit	KNUAK091A
Outdoor unit	KUSAB091A
Build
Indoor noise	21–41 dB(A)
Outdoor noise	47 dB(A)
Wi-Fi	Built in
Weight	indoor 22.7 lb / outdoor 68.8 lb
Warranty	10 yr compressor, 10 yr parts
Warranty with DIY install	No, a licensed installer is required

Alternatives in this size

Pioneer Quantum Hyperformance 9,000 BTU 230V

#11 in 9,000 BTU4.2Full review

Full rated heat in deep cold at a fair price, for a self-installer comfortable with a vacuum pump. Della’s Optima Pro has near-identical certified ratings for a little less.

Amazon $1,311 Pioneer Mini Split store $1,318

$1,311

Fujitsu Altair 700 9,000 BTU

#12 in 9,000 BTU4.2Full review

Very efficient and quiet, for mild winters: it stops heating below 5 °F, so a cold climate needs Fujitsu’s Orion XLTH instead.

MrCool DIY 5th Gen 9,000 BTU 115V

#14 in 9,000 BTU4.0Full review

For someone who wants a true plug-together install with no tools beyond a drill, and a warranty that survives it. Expect to pay well over the price of a flare unit with the same cold-weather output.

Amazon MRCOOL DIY Direct $2,330

$2,330

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Manufacturer

Engineering Manual