Hoods with two motors

≥ 2 motors

— for most modern models, one motor is enough — this is enough even for fairly high performance. Models with two motors are somewhat less common — usually, these are powerful performant hoods. One of the advantages of this design is that only one motor can be used at low speeds, and the second one can be switched on only when increased power is required. It has a positive effect on the minimum noise level (see above); on the other hand, the maximum noise level can be quite high, and such devices are usually more expensive than single-engine ones.

It is technically possible to use more than two motors. However, such models are single exceptions.