On Tuesday, 28 January 2020 22:07:53 UTC, polygonum_on_google wrote:
In our kitchen we have a perfectly ordinary cooker hood vented outside. Trouble is, there is quite a draught from it. It exits into the gap between our house and our neighbours' - which can be pretty windy. Fine when cooking, but makes the whole kitchen a bit chilly in the winter.

Is there a simple (but effective) way of reducing airflow when we are not using it?

Obviously we could shove a rolled up newspaper in the hole - but that is hardly convenient!

There are gravity closed airflow opened shutters - you might have one that's stuck open. They blow open in wind and stick open on occasion. Then there are solenoid & wax motor powered flaps, they're much better, staying shut when they should. Solenoids go clunk when they operate, wax motors are silent. Both require power.


NT