How much a cooker hood consumes and what it costs to run

A kitchen cooker hood costs very little to run: between 12 and 39 euros a year, based on the twenty Bosch and Siemens product sheets we collected for our guide to choosing a cooker hood. The figure worth reporting isn't that range, already small: it's that the letter printed on the label doesn't track the declared consumption in kWh, and two hoods from the same brand can swap places.

We at PortosEunostos re-read the Reg. (EU) 65/2014 information sheets of the twenty Bosch and Siemens hoods actually on sale on OpportunityCommerce, checked two models directly against their official sheet as it stands today, and applied the ARERA tariff in force since 1 October 2026, 0.4343 euros per kWh.

The starting number: 11.81 to 38.83 euros a year

Across the twenty sheets we collected, declared annual consumption runs from 27.2 to 89.4 kWh, median 51.1 kWh. At the current tariff that's 11.81 and 38.83 euros a year respectively: a 27.01-euro gap between the lowest- and highest-consuming hood in the whole sample. For an appliance that in an average kitchen runs for a few dozen minutes a day, nowhere near the consumption of a fridge or a washing machine, that's a marginal expense. We're saying this upfront because it changes how the rest of this article is worth reading.

The energy class doesn't track declared consumption

The regulation doesn't calculate the class from annual consumption alone. The energy efficiency index for cooker hoods combines consumption with fluid dynamic efficiency (how much air the hood moves per watt drawn, the same FDE figure printed on the sheet) and a time-increase factor. The practical result, verified on our twenty sheets, is that class and kWh/year aren't ranked the same way:

Classes A+ and A stay on top with no exceptions. From there on, though, class B (59.4-75.2 kWh) declares higher consumption than the entire class C range (52.1-57.3 kWh), and class D starts at 56.1 kWh, below class B's minimum. Above class A, the letter on the label isn't a reliable ranking of real consumption: to know that, you need to read the kWh figure, not the letter.

Two Bosch hoods, same range, higher consumption and a better class

The clearest case in our sample compares two Bosch built-in hoods, same brand, same installation category, different prices: the DLN53AA70 (Series 2, 53 cm) and the DLN56AC50 (Series 6, 52 cm).

The Series 6 model consumes 11.1% more in absolute kWh and still earns a better energy class, because its fluid dynamic efficiency (22.7) is more than double that of the Series 2 (9.5): it moves more air per watt drawn, and that's what the formula rewards, not the kWh figure alone. Anyone choosing the Series 6 on the assumption that class B "uses less" would actually pay 3.26 euros more a year in electricity, against a purchase-price gap of 251.52 euros that has nothing to do with energy at all.

How much the gap actually matters

Put in perspective: over ten years, the gap between the cheapest and the most expensive hood to run in our sample (27.01 euros a year) adds up to 270.10 euros, less than the price of many individual hoods in the catalogue. The same math doesn't hold for a freezer or a washing machine, where the annual gap runs into tens of euros and compounds on an appliance that runs far more hours a day. For a cooker hood, the electricity bill isn't where the purchase decision should be made.

PortosEunostos advice

• Don't choose by the letter. Above class A, the order among B, C and D in the sheets we read doesn't follow declared consumption: read the kWh/year figure, not the grade.

• Check fluid dynamic efficiency if the sheet reports it. It's what explains why two hoods with similar consumption can land in different classes, and it's a more useful figure than the energy label alone.

• Put energy savings at the bottom of the list. As we explain in our buying guide, airflow, noise and grease-filtering efficiency matter far more to daily use than a 27-euro-a-year difference in electricity.

• Check the exact model's sheet. The figures in this article come from the official sheets of twenty models: a different model, even in the same series, can carry different values.

The Portos take

The cooker hood is the one kitchen appliance where, in our sample, the energy saving between the best and the worst model comes to cents a month, not euros. The reason the energy class has been on the label since 2015 (Reg. EU 65/2014) isn't the buyer's wallet: it's comparing appliances on the same scale across the European Union. To decide which one to buy, as our buying guide and our analysis of the Bosch DBB97AM60 already show, what counts is real airflow, noise at the speed you'll actually use, and grease-filtering efficiency: for this appliance, the electricity bill isn't a reliable compass.

You can compare prices and models on SniffaPrezzi or browse the cooker hood catalogue on OpportunityCommerce, where we checked availability and pricing for the two Bosch models above today.

Sources and documentation

• Reg. (EU) 65/2014 and Reg. (EU) 66/2014 information sheets for twenty Bosch and Siemens cooker hoods, collected from media3.bsh-group.com and already used for our cooker hood buying guide; DLN53AA70 and DLN56AC50 data re-checked on 14 November 2026.

• Bosch product pages for the DLN53AA70 and DLN56AC50 on Bosch Italy.

• ARERA notice for the fourth quarter of 2026: 0.4343 euros per kWh.

• Prices and availability checked on 14 November 2026 on OpportunityCommerce, cooker hood category.