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It is best to worry in advance and choose the quietest model of the hood. For this type of equipment, the noise level during operation is indicated necessarily, but some manufacturers and sellers are sometimes cunning, indicating by default the noise level for the most inefficient mode of operation.

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    All about hoods: their types, cleaning methods and additional options

Examples of low-noise kitchen appliances
Photo: Miele

Examples of low-noise kitchen hoods. Model DA 6488 W (Miele), first stage sound power level 37 dB(A)

Approximately half of all noise is produced not by the hood itself, but by the exhaust ducts (if the hood is supposed to be used in flow mode). Therefore, it is very important to properly mount and soundproof them. For air ducts, it is better to take pipes with smooth walls made of dense plastic — they produce less noise than various types of flexible corrugated hoses, in which, due to the high roughness of the ribbed walls, strong turbulent air flows can occur, accompanied by vibration. At the same time, in round pipes, the noise will be quieter than in rectangular pipes of the same cross-sectional area. True, hiding the first is more difficult.

Elica Chrome (Elica) Model, Sound Mode Level...
Photo: Elica

Model Elica Chrome (Elica), sound power level at first speed — 45 dB(A)

Duct noise can be reduced by 10-15 dB if the exhaust ducts are properly soundproofed. Sound insulation is made using rolled insulating materials based on polyethylene foam, rubber, fiberglass, etc., such as ZvukoIzol, Penofol, TermoZvukoIzol, NoiseBlock Pipe. These materials are produced in the form of sheets or finished sleeves that are put on pipes; The latter option may be more expensive, but easier to install.

Choose for air ducts pipes of the largest diameter recommended for this hood (or with a similar cross-sectional area) — they have the lowest air flow rate, which means that the noise level will be lower

Vibrations of the ventilation pipe are transmitted both through the mounting system to the building structure and from it in the form of noise into the room (the so-called sound propagation in the building structure). To reduce this type of vibration, it is recommended to use acoustic decoupling — mounting clamps with damping tabs made of rubber or a material similar in properties. The same can be said about the hood — when mounting on a wall between the wall and the hood body, it is recommended to lay a sheet of material that dampens vibration.

Model Concetto Spaziale (Elica), sound level
Photo: Elica

Model Concetto Spaziale (Elica), sound power level at first speed is 30 dB(A)

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    Ventilation and air conditioning

    How to install a hood in the kitchen: instructions for different models

We calculate the noise level of the hood

Usually, a performance equal to ten times the volume of the kitchen room is taken as a calculated one. For example, you have a kitchen with an area of ​​15 m² and a ceiling height of 3 m. Then the calculated productivity will be 15 × 3 × 10 = 450 m³ / h. To be sure, let’s add another 30% of productivity, let it be 600 m³ / h. If you choose a hood, focusing on its maximum power of 600 m³ / h, then most likely you will be able to find a model with a noise level of 50–60 dB. And if you choose a model with a maximum capacity of 1200 m³ / h, then in the 600 m³ / h mode it will make noise at the level of 35–45 dB.

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Materials for arranging ventilation ducts for kitchen hoods

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  • Source: Ideas for Your Home Magazine#237



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