LG
Artcool Mirror AC12BK.NSJ / AC12BK.UA3
LG's style statement: a mirror-fronted Dual Inverter unit with UVnano cleaning and smart control. Looks great and runs quietly, though efficiency is mid-tier.
€1,150
List priceindoor + outdoor unit, install extra
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Units like this are usually quoted and fitted by a specialist installer. Compare it against models you can buy today.
Will it cool your room?
This unit's cooling matches a 35 m² room. Set your room size to check the fit for your space.
Installation cost
$2,500-6,000 fully installed for a typical room (the equipment is roughly $700-1,800, professional installation roughly $1,500-4,000+ depending on line-set run, electrical and access). The unit price you see here is hardware only; installation is the larger, separate cost.
A typical range for this system type, for comparison only, not a quote for this unit. The actual price depends on the line-set run, electrical work and access.
At a glance
Best for design-focused buyers who want a striking wall unit and are less concerned about top efficiency.
Performance
- Cooling capacity
- 3.5 kW · 12,000 BTU
- Heating capacity
- 4 kW
- Room coverage
- 25–35 m²
- SEER (cooling)
- 6.6
- SCOP (heating)
- 4
- Energy class (cooling)
- A++
- Energy class (heating)
- A+
- Annual energy (cooling)
- 186 kWh
Noise, size & features
- Model number
- AC12BK.NSJ / AC12BK.UA3
- Indoor noise
- 19 dB(A)quieter than a whisper
- Outdoor noise
- 48 dB(A)
- Indoor unit
- 837x308x189 mm (WxHxD)
- Outdoor unit
- 717x495x230 mm (WxHxD)
- Refrigerant
- R32
- Wi-Fi / app
- Yes
- Outdoor unit needed
- Yes
What is good
- Distinctive mirror-finish front panel
- Dual Inverter compressor with quiet 19 dB(A) low mode
- UVnano and Plasmaster Ionizer air cleaning
- Built-in Wi-Fi with LG ThinQ
What to watch
- A++ / A+ efficiency, behind the premium A+++ models
- Higher running cost than top-tier units
- Glossy panel shows dust and fingerprints
Installation & the rules that apply
This is a single split. This is where regulation bites. Breaking into the refrigerant circuit must be done by an F-gas certified installer (in the EU and UK), and single-split systems may use refrigerant indefinitely only if its GWP is under 750 (R32 qualifies). DIY voids the warranty, home insurance and is an offence. The outdoor unit alters the facade, so a prior declaration to the town hall (e.g. France), planning permission, or freeholder, landlord and condominium consent is commonly needed, plus heritage rules in protected zones and minimum-distance and noise rules toward neighbours.
Certified installer
R32
Common questions about the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3
- How loud is the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3?
- 19 dB(A) indoors, quieter than a whisper.
- How energy-efficient is the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3?
- Its efficiency rating is SEER 6.6.
- What size room does the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3 cool?
- It is rated to cool a room 25–35 m² (3.5 kW · 12,000 BTU).
- Do I need a professional to install the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3?
- Yes. As a single split it needs a certified installer. Usually needs permission.
- Does the LG Artcool Mirror AC12BK.NSJ / AC12BK.UA3 heat as well as cool?
- Yes. It also heats, rated 4 kW of heating output.
Is a split even the right type?
Compare splits against the other types on price, noise, efficiency and install.
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