cooker hood

bablegs · Posted: Mon Nov 06, 2006 6:23 pm Post Subject: cooker hood

Can an extractor cooker hood be fitted so that the extracted fumes are passed through an existing chimney i.e. the original kitchen chimney breast from the days of cooking on solid fuel stoves.

Steve · Posted: Mon Nov 06, 2006 6:55 pm Post Subject:

You might as well fit a standard kitchen wall fan, recessed up so you cant see it. Its possible, but I think it requires ductwork right up to the roof.

Taylortwocities · Posted: Mon Nov 06, 2006 7:30 pm Post Subject:

And you'd have to use a fan that is capable of pushing up the height of the chimney. Most fans are only good for 3 meteres or so.

TTC

Jaymack · Posted: Mon Nov 06, 2006 7:50 pm Post Subject:

I wouldn't recommend using a fan as a substitute for a cooker hood. there will be a build up of grease etc., on the motor and blades.
This has been the cause of at least two fires, in my experience.

Jaymack

JohnD · Posted: Thu Nov 09, 2006 1:53 am Post Subject:

However...

There is the point that if the chimney is open at the top, natural convection will tend to take hot or moist air up it from the cooker below, even if there is no fan.

You will need a vent or grill for fresh air to enter the kitchen to replace that which escapes upwards. And there will be grease deposits so some kind of fireproof duct would be needed all the way up.

I agree that an ordinary extractor hood venting through the wall could be less trouble.

Or you could try asking the cust serv depts of major makers of extractor hoods, they will probably have come across the question before.