LG Art Cool Mirror 12,000 BTU

LG · Single-Zone

LG Art Cool Mirror 12,000 BTU

KNUAK121A / KUSAB121A

~$1,990approximate retailer price at last check, equipment only

BTU/h
12k
Volts
230
Zones
1
SEER2
22.5
HSPF2
10.5
Heats to
-4°F
Refrig.
R-32
Covers
550 ft²
Wi-Fi
Built in

Best forStyle-conscious rooms in mild-to-mixed climates where the Emura's look is wanted at a lower price with better efficiency.

Overview

The Art Cool Mirror is the black-glass flat panel that made mini-splits acceptable in design-conscious living rooms years before Daikin's Emura reached the US, and this current R-32 generation is a legitimately competitive machine — 22.5 SEER2, 10.5 HSPF2, built-in WiFi with LG's ThinQ app, and heating operation down to -4°F. That last number is the honest dividing line: it handles mixed climates fine but it's not a Mitsubishi hyper-heat, and owners will tell you exactly that — LG is a tier below the Japanese trinity, mainly on parts turnaround and installer familiarity rather than build quality. In LG's favor: at ~$2,000 it undercuts the Daikin Emura by hundreds while beating it on every efficiency spec, WiFi is standard rather than an adapter upsell, and the mirror-black panel is genuinely striking. Common failure reports center on indoor blower motors and the occasional EEV board, and LG parts distribution runs through fewer channels than Mitsubishi's, so repairs can wait on shipping. Expect $4,500-$6,500 installed.

  • Mirror-black flat panel — the design-line value pick
  • Beats the Daikin Emura on every spec for less money

Cold-weather output

At 5°F it still makes 74% of its rated heat, according to the certified NEEP listing for this pairing. LG rates it to keep running down to -4°F.

47°F32°F17°F5°F13.6k10.0kmaker's floor -4°F
COP at 5°F
1.99
Refrigerant
R-32
AHRI cert.
215413008
ENERGY STAR cold climate
Yes

Pairing: KUSAB121A with KNUAK121A. From NEEP's ccASHP list; a different head or condenser posts different numbers.

Strengths and catches

Strengths

  • +22.5 SEER2 / 10.5 HSPF2 comfortably beats the Daikin Emura's 17/8.0
  • +10-year registered parts and compressor warranty
  • +~$2,000 street price undercuts every Japanese design-line alternative

Catches

  • −Heating stops at -4°F — not a cold-climate primary heat source
  • −LG parts turnaround is slower than Mitsubishi's distributor network
  • −Fewer installers know the platform, so quotes and workmanship vary
  • −Glossy black panel shows dust and fingerprints more than white units
  • −Resale/contractor perception still ranks LG below the Japanese big three

Questions buyers ask

How does the Art Cool Mirror stack up against the Daikin Emura?+

It beats the Emura on every spec for less money: 22.5 SEER2 vs 17, 10.5 HSPF2 vs 8.0, heating to -4°F vs 5°F, current R-32 refrigerant, and built-in WiFi — at roughly $2,000 vs the Emura's $2,600 equipment price. The Emura's counterargument is the 12-year Daikin warranty and stronger dealer network.

Can it carry a house through a northern winter?+

No — heating stops at -4°F, so it's not a cold-climate primary heat source. In mild-to-mixed climates it heats competently with its 10.5 HSPF2, but if your design temperature dips below zero, pair it with backup heat or pick a true low-ambient unit.

Does the black glass panel stay looking good?+

It's the unit's whole selling point and its maintenance quirk: the glossy mirror-black finish shows dust and fingerprints more readily than a standard white plastic head. Expect to wipe it down as part of routine filter cleaning if it's in a prominent spot.

What does LG's 10-year warranty require?+

A licensed contractor install plus registration at LG's warranty portal within 60 days — otherwise you fall back to shorter base terms. Budget $4,500-$6,500 installed for a single zone. Worth knowing: fewer installers work on LG than the Japanese big three, so quotes and workmanship vary more.

Is the WiFi built in?+

Yes, through LG's ThinQ app — no adapter purchase, unlike several Japanese-brand rivals. If you already run LG appliances, it lands in the same ecosystem.

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