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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 5.1 kW · cooling and heating

Mijaki MJI-9918S - MJO-9919S

A+++

Uses less electricity than 69% of the 5,158 split air conditioners, 4–5 kW on the EU register. At your selected price (European Union) that is €62 a year, €623 over ten years.

Cooling, SEER
8.5
Typical 6.8
Heating, SCOP
4.6
Typical 4.1
Cooling cost
€62 / year
+€365 if you also heat with it (average climate)

Near the middle of its group: 13 % below the typical 254 kWh. Class A+++ is the best class any model in this group reaches. Heating efficiency (SCOP 4.6) is above the typical 4.1 of its group. Of 2 Mijaki models in this group, it is the most efficient.

Where it stands

Rank 1,522 of 5,158 split air conditioners, 4–5 kW by yearly consumption. 1,521 use less.

Median 254 This model · 220 100 850 kWh ← uses less · uses more →

Next to it in the ranking

  1. A+++ Hitachi RAM-53NP3E / RAK-18QXE + RAK-18QXE + RAK-25RPE 219 kWh −€0.28
  2. A++ Mitsubishi Electric MSZ-LZ50VUMW / MUZ-LZ50VU 219 kWh −€0.28
  3. A+++ Mijaki MJI-9918S - MJO-9919S 220 kWh
  4. A+++ F&U FVIN-18180 / FVOT-18181 220 kWh same
  5. A+++ Arielli ASW-18CPC 220 kWh same
See the full ranking

What it will cost you

Period MJI-9918S - MJO-9919S LEP35Xi R16 / LOP35Xo R16 Difference
1 year €62 €37 −€25
5 years €312 €185 −€126
10 years €623 €371 −€252
15 years €935 €556 −€378

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 220 kWh / yr
Heating, average climate 1,290 kWh / yr

Heating by climate zone

Climate SCOP kWh / yr
Warmer (e.g. Athens) 5.5 990
Average (e.g. Strasbourg) 4.6 1,290
Colder (e.g. Helsinki) — —

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+++ Mijaki MJI-9918S - MJO-9919S (this model)
5.1 kW8.5 220 — —
5.1 kW9.4 131 €25 €252
5.3 kW7.0 132 €25 €249
5.3 kW7.0 132 €25 €249
4.5 kW9.1 174 €13 €130
4.5 kW8.7 181 €11 €110

Label and product sheet

Energy class cooling / heating
A+++ / A++
SEER
8.5
SCOP warmer / average / colder
5.5 / 4.6 / –
Cooling design load
5.1 kW
Heating design load (average)
4.1 kW
Yearly cooling
220 kWh
Yearly heating (average climate)
1,290 kWh
Sound power indoor / outdoor
56 / 65 dB(A)
Refrigerant
R32 (GWP 675)

Model numbers and history

Registered by Mijaki under one model number.

MJI-9918S - MJO-9919S

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

Questions

How much does the Mijaki MJI-9918S - MJO-9919S cost to run?

At one cooling season as on the label it uses about 220 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €62 a year, or €623 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 8.5 and SCOP 4.6 in the average climate: higher is better.