EnergyLabelEU
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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 5.0 kW · cooling and heating

LG UUB1 U20 / MJ18PC NSK0

A++

Uses less electricity than 47% of the 5,158 split air conditioners, 4–5 kW on the EU register. At your selected price (European Union) that is €73 a year, €728 over ten years.

Cooling, SEER
6.8
Typical 6.8
Heating, SCOP
4.0
Typical 4.1
Cooling cost
€73 / year
+€387 if you also heat with it (average climate)

Near the middle of its group: 1 % above the typical 254 kWh. Class A++ is the most common class in this group (69% of models). Heating efficiency (SCOP 4.0) is below the typical 4.1 of its group. LG has 68 models in this group; this one is number 42 among them. LG sells the same label values under other model names: UUB1 U20 / MJ18PC NSK.

Where it stands

Rank 2,679 of 5,158 split air conditioners, 4–5 kW by yearly consumption. 2,678 use less.

Median 254 This model · 257 100 850 kWh ← uses less · uses more →

Next to it in the ranking

  1. A+ Clivet S.IZ1+MZ1-Y 53M 256 kWh −€0.28
  2. A++ LG UUB1 U20 / MJ18PC NSK 257 kWh same
  3. A++ LG UUB1 U20 / MJ18PC NSK0 257 kWh
  4. A++ Mitsubishi Electric MFZ-KT50VGK / SUZ-M50VA2-ET 257 kWh same
  5. A++ Cooper&Hunter CHML-U18RK2-NG 257 kWh same
See the full ranking

What it will cost you

Period UUB1 U20 / MJ18PC NSK0 LEP35Xi R16 / LOP35Xo R16 Difference
1 year €73 €37 −€36
5 years €364 €185 −€178
10 years €728 €371 −€357
15 years €1,092 €556 −€535

Is the more efficient model worth its price?

Years of use

Enter both purchase prices to see the total cost of ownership.

Cooling and heating

Cooling season 257 kWh / yr
Heating, average climate 1,365 kWh / yr

Same size, lower running cost

On sale, at least 10% less energy, same size group

Model CoolingSEER kWh / yr Saves / year in 10 years
A++ LG UUB1 U20 / MJ18PC NSK0 (this model)
5.0 kW6.8 257 — —
5.1 kW9.4 131 €36 €357
5.3 kW7.0 132 €35 €354
5.3 kW7.0 132 €35 €354
4.5 kW9.1 174 €24 €235
4.5 kW8.7 181 €22 €215

Label and product sheet

Energy class cooling / heating
A++ / A+
SEER
6.8
SCOP warmer / average / colder
– / 4.0 / –
Cooling design load
5.0 kW
Heating design load (average)
3.9 kW
Yearly cooling
257 kWh
Yearly heating (average climate)
1,365 kWh
Sound power indoor / outdoor
59 / 63 dB(A)
Refrigerant
R32 (GWP 675)

Model numbers and history

Registered by LG under one model number.

UUB1 U20 / MJ18PC NSK0

  1. First published in the EU register (EPREL)
  2. Placed on the EU market

Questions

How much does the LG UUB1 U20 / MJ18PC NSK0 cost to run?

At one cooling season as on the label it uses about 257 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €73 a year, or €728 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 6.8 and SCOP 4.0 in the average climate: higher is better.