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Costs for 0.283 €/kWh · Eurostat 2026 H1

Split air conditioners · 2.6 kW · cooling and heating

Ferroli ASTER S 9

A++

Uses less electricity than 20% of the 2,545 split air conditioners, under 3 kW on the EU register. At your selected price (European Union) that is €42 a year, €419 over ten years.

Cooling, SEER
6.2
Typical 6.9
Heating, SCOP
4.0
Typical 4.1
Cooling cost
€42 / year
+€258 if you also heat with it (average climate)

Uses more than most comparable models: 80 % of them need less. Mitsubishi Electric MSZ-RZ25VU / MUZ-RZ25VU, the most efficient alternative on sale, saves about €21 a year. Class A++ is the most common class in this group (65% of models). Heating efficiency (SCOP 4.0) is below the typical 4.1 of its group. Ferroli has 7 models in this group; this one is number 5 among them. On the register since 2019 and still on sale.

Where it stands

Rank 1,996 of 2,545 split air conditioners, under 3 kW by yearly consumption. 1,995 use less.

Median 130 This model · 148 0 1,300 kWh ← uses less · uses more →

Next to it in the ranking

  1. A+ Daikin FTX25KNV1B / RX25KMV1B 148 kWh same
  2. A++ Lamborghini Caloreclima I-BREEZE 9 N 148 kWh same
  3. A++ Ferroli ASTER S 9 148 kWh
  4. A++ KlimaNEXT KNX-S09-32 149 kWh +€0.28
  5. A++ Olmo OSH-09FWH 149 kWh +€0.28
See the full ranking

What it will cost you

Period ASTER S 9 MSZ-RZ25VU / MUZ-RZ25VU Difference
1 year €42 €21 −€21
5 years €210 €106 −€103
10 years €419 €212 −€207
15 years €629 €319 −€310

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 148 kWh / yr
Heating, average climate 910 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 9 (this model)
2.6 kW6.2 148 — —
2.5 kW11.7 75 €21 €207
2.5 kW11.7 75 €21 €207
2.5 kW11.2 78 €20 €198
2.5 kW11.2 78 €20 €198
2.5 kW10.9 80 €19 €193

Label and product sheet

Energy class cooling / heating
A++ / A+
SEER
6.2
SCOP warmer / average / colder
– / 4.0 / –
Cooling design load
2.6 kW
Heating design load (average)
2.6 kW
Yearly cooling
148 kWh
Yearly heating (average climate)
910 kWh
Sound power indoor / outdoor
55 / 61 dB(A)
Refrigerant
R410A (GWP 2088)

Model numbers and history

Registered by Ferroli under one model number.

ASTER S 9

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

Questions

How much does the Ferroli ASTER S 9 cost to run?

At one cooling season as on the label it uses about 148 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €42 a year, or €419 over ten years.

What do SEER and SCOP mean?

This model reaches SEER 6.2 and SCOP 4.0 in the average climate: higher is better.