Dreadnaught

Ducted grease-extractor in ceiling instead of a cooker hood — silly idea?

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I don't really like the look of cooker hoods, especially those above an island hob. Not to mention that they are expensive.
 
So I have been researching mounting an extractor grill in the ceiling above the hob instead.
 
Seems easy to do. Just mount an egg-crate grill with plenum containing a grease filter in to the ceiling. Run ducting through the web joists to the adjacent utility room and a second exhaust grill. Locate a variable speed fan in the utility room so it is quiet. Put a variable switch near the hob.
 
Flawed idea?
 
Edited by Dreadnaught

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The idea of the hood is to capture the smoke and steam before it escapes into the rest of the room.  Unless you have a very powerful fan and a large area grille I think it may disperse before it gets extracted.

 

I like stir-fry and cooking meat on a griddle, so I have a hood with grease filter but with a fan mounted remotely in a plant room above to make it quieter.  I used a variable speed controller but it seems fairly useless so I just switch to full.  I used 150mm duct and a Soler&Palau 200mm fan.

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Thanks @Mr Punter. Helpful.

 

Good point about the hood. I am relying on the fact that the hot cooking-oil should rise up, rather like a mushroom cloud. I have a hunch it will be moderately effective even without a hood. You are quite right, it will need a fairly high flow rate to work well and some escape in the room will be inevitable. 

 

Good recommendation on the fan. Looks ideal!

 

As a grease filter, which did you use: fleece, metal or baffle? The baffle one's might look rather nice on show in my ceiling I think.

 

 

Edited by Dreadnaught

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Won't it make the ceiling around the vent greasy and icky?

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@vivienz ah, hopefully not. Truth be told, I don't really cook an awful lot so I could probably get by without one at all. I am expecting that this arrangement will be superior to no hood at all and I wondering if it will actually prove surprisingly effective with a decent flow rate using the fan @Mr Punter suggested..

 

And, after all, I grew up in a house without a cooker hood at all without too many visible effects on the decor.

 

Hmm, perhaps I am deluded.

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I had in mind ceilings above cooker hoods and how these areas tend to get greasy and dirty. The extract draws the oil upwards but not all of it goes into the filter. It takes time to accumulate, though.

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I adapted a cooker hood - removed the motor but left the metal grease filters so they can be put in the dishwasher from time to time.

 

The larger the fan and ducting, the better.

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Similar to what I'm planning, flush filter units mounted in a drop ceiling bulkhead, ducting to external wall and an external mounted fan unit for silent operation. Insulated damper to maintain air tightness when not in use.  Plan to have the ceiling surfaces within the bulkhead above the island made from MDF painted in wipeable kitchen paint... For those once a year cleans!

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14 hours ago, Dreadnaught said:

And, after all, I grew up in a house without a cooker hood at all without too many visible effects on the decor.

After we moved into my Mum's old bungalow, without a cooker hood, it took quite some time cleaning the oily film off the units near the hob. I never noticed it when visiting though.

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Thank you all. Very helpful. You have certainly got me thinking about the right issues I think.

 

These thoughts have prompted me to rethink the hob's location. My previous idea was to have it against a wall but that is directly beneath a roof window above. I now realise that that roof window might be difficult to clean and may quickly become dirty.

 

Might therefore be better to move the hob to the island (with my vent in the flat ceiling above).

 

I also like the idea of using a wipe-clean gloss paint in the area around the vent itself. Good idea @Conor.

 

 

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9 minutes ago, Dreadnaught said:

 

 

I also like the idea of using a wipe-clean gloss paint in the area around the vent itself. Good idea @Conor.

 

 

Dulux endurance kitchen paint. Have it behind our current hob instead of a splashback. Very easy to wipe down and surprisingly durable so far.

 

Edited by Conor

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3 minutes ago, Conor said:

Dulux endurance kitchen paint

 

Good recommendation. Thanks. I see it comes in matt too and "Dulux Easycare Kitchen paint is an exceptionally tough grease resistant paint.":

 

The colour choice, however, looks a little bit primary but the may just be my screen:

 

image.thumb.png.442330751b5896880fae46ba27b12c3b.png

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Oh no, that was just a website tool. The colour palettes seems to be:

 

image.thumb.png.8f59f1ff8e23a49be965b9df11b77cbf.png

 

… much less Laurence Llewelyn-Bowen. 

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