I understand the difference between a hood that recycles and one that vents to the outside, but I would like to know what to do in the following circumstances.
I have an extractor that recycles by drawing air from immediately over the hob and blows it into a false flu that is, in effect, a closed “box”. It seems to me that, having been drawn by the fan through the metal and charcoal filters, the air needs to escape from this enclosed space, but there is no way for it to do so. Is it necessary or advisable to fit a vent into the top of the wooden hood so that the cleaned air can escape from the enclosed “box” back into the kitchen?
I have an extractor that recycles by drawing air from immediately over the hob and blows it into a false flu that is, in effect, a closed “box”. It seems to me that, having been drawn by the fan through the metal and charcoal filters, the air needs to escape from this enclosed space, but there is no way for it to do so. Is it necessary or advisable to fit a vent into the top of the wooden hood so that the cleaned air can escape from the enclosed “box” back into the kitchen?