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A++

Ferroli DIAMANT M 21-3 PLUS

Air conditioner · model DIAMANT M 21-3 PLUS · on the market since 1 February 2021

Estimated running cost, EU average price
€99 a year
350 kWh/year · €991 over 10 years at today’s prices
+€32a year vs the average comparable model

Annual cooling consumption as declared on the EU energy label (standard cooling season). Prices: Eurostat household electricity prices incl. taxes, 2026 (Jan–Jun), consumption band 2,500–4,999 kWh.

Running cost in every country (39)
Country€/kWhPer year10 years
Albania0.119€42€417
Austria0.326€114€1,141
Belgium0.358€125€1,251
Bosnia and Herzegovina0.1€35€348
Bulgaria0.134€47€469
Croatia0.182€64€636
Cyprus0.269€94€941
Czechia0.288€101€1,009
Denmark0.238€83€831
Estonia0.212€74€741
Finland0.269€94€943
France0.249€87€870
Georgia0.073€26€256
Germany0.362€127€1,266
Greece0.24€84€840
Hungary0.114€40€399
Iceland0.202€71€707
Ireland0.387€135€1,355
Italy0.314€110€1,100
Kosovo0.087€30€304
Latvia0.242€85€845
Liechtenstein0.299€105€1,046
Lithuania0.216€76€757
Luxembourg0.202€71€708
Malta0.127€44€444
Moldova0.187€66€655
Montenegro0.104€36€364
Netherlands0.244€85€854
North Macedonia0.117€41€409
Norway0.199€70€698
Poland0.3€105€1,050
Portugal0.237€83€828
Romania0.284€99€993
Serbia0.12€42€419
Slovakia0.199€69€695
Slovenia0.212€74€741
Spain0.251€88€878
Sweden0.306€107€1,072
Türkiye0.066€23€230

How it compares

Compared with 1,615 air conditioners, 3.6–5 kW on the EU register:

1,582 comparable models use less energy. The typical model in this group uses 236 kWh a year; most use between 167 and 303. See the full ranking.

Energy label values

Energy efficiency classA++ on the A+++–D scale
Functioncooling and heating
Cooling capacity4.1 kW
Heating capacity5.6 kW
SEER (cooling)6.1
SCOP (heating, average climate)4
Annual cooling consumption350 kWh
Annual heating consumption (average climate)1,960 kWh
Heating classAP
Indoor noise54 dB(A)
Outdoor noise65 dB(A)
RefrigerantR32
Refrigerant GWP675

Lifespan & repair

Registration history

Comparable air conditioners from other brands

  1. B
    Hitachi RAS-2HVNP1 - RPC-2.0FSN3E
    5 kW · SEER 5 · 346 kWh/yr
    €98/year
  2. A++
    ARGO GREENSTYLE MONO 24000
    5 kW · SEER 6.2 · 356 kWh/yr
    €101/year
  3. A
    €97/year
  4. A
    Hitachi RAS-2HVNP / RPI-2.0FSN4E
    5 kW · SEER 5.1 · 343 kWh/yr
    €97/year
  5. A
    Hitachi RAS-2HVNP / RCI-2.0FSN3Ei
    5 kW · SEER 5.1 · 343 kWh/yr
    €97/year
  6. A
    Panasonic S-50PN1E5B / U-50PZH2E5
    5 kW · SEER 5.1 · 342 kWh/yr
    €97/year

Source: EU energy label register (EPREL), registration 1014009. Values are as declared by the supplier. YearlyCost is not affiliated with the European Commission or Ferroli.