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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 5.1 kW · cooling and heating

Ferroli ASTER S 18

A++

Uses less electricity than 20% of the 5,158 split air conditioners, 4–5 kW on the EU register. At your selected price (European Union) that is €83 a year, €827 over ten years.

Cooling, SEER
6.1
Typical 6.8
Heating, SCOP
4.0
Typical 4.1
Cooling cost
€83 / year
+€406 if you also heat with it (average climate)

Uses more than most comparable models: 80 % of them need less. Rotenso LEP35Xi R16 / LOP35Xo R16, the most efficient alternative on sale, saves about €46 a year. 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. Ferroli has 24 models in this group; this one is number 14 among them. On the register since 2019 and still on sale.

Where it stands

Rank 4,113 of 5,158 split air conditioners, 4–5 kW by yearly consumption. 4,112 use less.

Median 254 This model · 292 100 850 kWh ← uses less · uses more →

Next to it in the ranking

  1. A+ Daikin FFA50A2VEB / RXM50N2V1B 292 kWh same
  2. A++ Mitsubishi Heavy Industries SRC60ZSX-S_FDE60VH 292 kWh same
  3. A++ Ferroli ASTER S 18 292 kWh
  4. A++ Lamborghini Caloreclima I-BREEZE 18 N 292 kWh same
  5. A++ KlimaNEXT KNX-2M18-32AE 293 kWh +€0.28
See the full ranking

What it will cost you

Period ASTER S 18 LEP35Xi R16 / LOP35Xo R16 Difference
1 year €83 €37 −€46
5 years €413 €185 −€228
10 years €827 €371 −€456
15 years €1,240 €556 −€684

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 292 kWh / yr
Heating, average climate 1,435 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++ Ferroli ASTER S 18 (this model)
5.1 kW6.1 292 — —
5.1 kW9.4 131 €46 €456
5.3 kW7.0 132 €45 €453
5.3 kW7.0 132 €45 €453
4.5 kW9.1 174 €33 €334
4.5 kW8.7 181 €31 €314

Label and product sheet

Energy class cooling / heating
A++ / A+
SEER
6.1
SCOP warmer / average / colder
– / 4.0 / –
Cooling design load
5.1 kW
Heating design load (average)
4.1 kW
Yearly cooling
292 kWh
Yearly heating (average climate)
1,435 kWh
Sound power indoor / outdoor
58 / 63 dB(A)
Refrigerant
R410A (GWP 2088)

Model numbers and history

Registered by Ferroli under one model number.

ASTER S 18

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

Questions

How much does the Ferroli ASTER S 18 cost to run?

At one cooling season as on the label it uses about 292 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €83 a year, or €827 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 6.1 and SCOP 4.0 in the average climate: higher is better.