Joseph Meehan wrote:
Brian Attwood wrote:
mm wrote:
snip
I think so too.

I have a hood without a vent, but the electrician who wired these
town houses and also lived in one for many years put a vent in his
house. One could see the exit above his front sliding glass door.

The seller told me how expensive the replaceable charcoal filters
are, and they are, so I don't buy a replacement. The "spun" metal
grill can easily be washed in he dishwasher though. But I don't fry
and only broil, and don't use the fan much anyhow. So it doesn't get
dirty. I don't like the noise (either high or low speed), but maybe
newer ones are quieter.

The recirculating hoods that I have run into have all been pretty
noisy and don't strike me as particularly effective. I don't do a
lot of greasy frying but when I boil a pot of water and observe the
"steam"

While they can help reduce the grease, they will not remove any of the
steam. Only exhausting outside will do that.

I think you misunderstood what I am saying. I realize that the hood
cannot remove the steam. The steam does however indicate that the
hoods that I have observed create negligible draft more than a few
inches below the hood and that most of the grease, like the steam,
probably never enters the zone of influence of the hood.