Kitchen extractor fan building regs

[cornerstone]

I've just completed a studio flat and was under the impression I didn't need an extractor fan in the kitchen because there was an openable window. My building control officer has just told me otherwise

The kitchen is barely used so the fan is fairly redundant, so I'm trying to work out the cheapest and easiest way to install one, particularly because I haven't run electrics or ducting for it.....

The easiest route would be to install a bathroom style fan on the external wall (opposite wall to the hob, around 2-3m away). I asked the officer if it had to be within a certain distance of the hob but he said only if the fan's manufacturer stated so and I can't find this info on any of the products I've seen.

Any advice re type of fan and distance from hob I can get away with would be much appreciated.

Thanks

 

[John D v2.0]

Bathroom fan would be no good unless it's set to run permanently as it doesn't have enough airflow. You would need a proper kitchen extractor 125mm or more.
You can get away with smaller if it's a hood, normal extractor could be anywhere in the room

 

[Leofric]

Approved Document F is the relevant document for ventilation of dwellings. There are various ways to comply with the ventilation requirements but you are talking about intermittent mechanical extract ventilation. A bathroom 'style' extract fan, as in an axial through the wall fan, is suitable but you need one for a kitchen with an extract rate of at least 60 litres per second (bathroom fans only need to be 30 L/S) if not adjacent to the hob ( 30 L/S adjacent to hob or 60 L/S elsewhere ) Fans other than cooker hoods should be installed as high as practical and preferably less than 400mm below the ceiling.
Give the information to the BCO and if they still want assurance from the fan manufacturer contact the technical advisory service of Vent Axia , Greenwood , Xpelair , or whichever make of fan you want to use, give them the dimensions and ceiling height of the room and ask them to recommend a suitable fan and email you the technical details which you can then give to the BCO. Assuming your studio flat is not out of the ordinary and there is no open fire in the room .
Regards

 

[oldbutnotdead]

And whatever type you fit, spend the extra money and get one with a proper shutter mechanism (not the various gravity ones which flap in the breeze and rattle and are REALLY ANNOYING!!!!!!!!). You don't have to worry about switching the fan on with the lights, overrun etc- the Approved Document merely requires that the fan can be switched on and off (so an FCU will do it).

 

[cornerstone]

Thanks for the responses, so I could get something like this:
https://www.cef.co.uk/catalogue/pro...basic-kitchen-fan-standard?q=kitchen+extrator

And situate it anywhere in the kitchen, although preferably high up but not necessarily near the hob and I'd be ok?

 

[Leofric]

not quite anywhere , fan should not be situated between the hob and the door into the room. ( but sounds like it would not be as you describe it )