EnergyLabelEU
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Costs for 0.283 €/kWh · Eurostat 2026 H1

Fridge-freezers · 255 L · built-in

Miele KF 7742 B

B

Uses less electricity than 98% of the 8,824 fridge-freezers, 200–299 L on the EU register. At your selected price (European Union) that is €33 a year, €329 over ten years.

Electricity
116 kWh / year
Typical 217 kWh
Running cost
€33 / year
−€29 vs typical
Per 100 litres
45.5 kWh
Typical 84.3 kWh

Only 84 of 8,824 fridge-freezers, 200–299 L do better. Class B is the best class any model in this group reaches, and only 0% of them do. At 29 dB it is 10 dB quieter than the typical model in its group. Miele has 66 models in this group; this one is number 9 among them.

Where it stands

Rank 85 of 8,824 fridge-freezers, 200–299 L by yearly consumption. 84 use less.

Median 217 This model · 116 70 360 kWh ← uses less · uses more →

Next to it in the ranking

  1. B Liebherr ICBbi 5122_994883051 116 kWh same
  2. B Liebherr ICBbi 5152_994883451 116 kWh same
  3. B Miele KF 7742 B 116 kWh
  4. C Liebherr IRBc 4521_994879551 116 kWh same
  5. C Liebherr IRBci 4571_994879951 116 kWh same
See the full ranking

What it will cost you

Period KF 7742 B RKS245DB Difference
1 year €33 €23 −€10
5 years €164 €116 −€48
10 years €329 €232 −€96
15 years €493 €348 −€144

Is the more efficient model worth its price?

Years of use

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

Space and noise

Compartments · 255 L

201 L fridge 54 L freezer

45.5 kWh per 100 litres a year; the typical model in this group needs 84.3.

Noise · class A

30 dB · whisper40 dB · quiet library 29 dB
Dashed: group median 39 dB

Same size, lower running cost

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

Model VolumedB kWh / yr Saves / year in 10 years
B Miele KF 7742 B (this model)
255 L29 116 — —
238 L40 82 €10 €96
235 L33 91 €7 €71
268 L31 98 €5 €51
268 L32 98 €5 €51
245 L27 99 €5 €48

Label and product sheet

Energy class
B (scale A–G)
Energy consumption
116 kWh/year
Total volume
255 L
Fridge / freezer
201 L / 54 L
Noise
29 dB(A), class A
Height × width × depth
1,770 × 559 × 546 mm
Installation
built-in
Climate classes
SN, N, ST, T
Guarantee (supplier)
2 years
Spare parts (minimum)
7 years

Model numbers and history

Registered by Miele under one model number.

KF 7742 B

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

Questions

How much does the Miele KF 7742 B cost to run?

At continuous operation it uses about 116 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €33 a year, or €329 over ten years.

Is the Miele KF 7742 B quiet?

Its label states 29 dB(A), noise class A. The typical fridge-freezers, 200–299 L model is 39 dB(A).