Kitchen extractor with remote mounted fan

Kitchen extractor with remote mounted fan

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Sway

Original Poster:

26,250 posts

194 months

Wednesday 20th August 2014
quotequote all
Trying to source a 'normal' wall mounted extractor with remote mounted fan for external extraction.

Will be open plan kitchen/dining/living, and it'll be very visible, so trying to find something that'll look decent, have great extraction of smells, be quiet and most importantly cheap!!

It'll be mounted on the wall shared with the flat roofed garage (which is turning into a workshop/studio for the better half), so thought is to go straight through the wall, inline fan then vent through the roof, so two 90° bends...

Range cooker is 900mm wide.

Cheers!

Sam

Paul Drawmer

4,875 posts

267 months

Wednesday 20th August 2014
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I am using an integrated extractor unit (over 600 hob - so it won't match your 900 range).
I will remove the fan unit completely. The ducting will run up to the roof, where I will mount a big fan to suck the fumes out of the kitchen.
This will hopefully extract more air than the std unit, and make much less noise in the kitchen. I am retaining the lights and switching mechanism.


NorthDave

2,364 posts

232 months

Thursday 21st August 2014
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I've done this before and used a pro company called Westin.

The extract was great but I ultimately ended up replacing it with an internal unit due to complaints from the neighbours in relation to noise. Still went with a Westin product and extract is still good but not quite as powerful.

tuffer

8,849 posts

267 months

Thursday 21st August 2014
quotequote all
I have a Westin mounted on an external wall with a downdraft unit fitted behind the hob. Suction is so strong that it is hard to shut the kitchen door when it is running on full smile

Sway

Original Poster:

26,250 posts

194 months

Thursday 21st August 2014
quotequote all
Paul, interesting. Might have to take down the current one and take it apart before I buy one from ao.com!

For the guys that went for Westin, just had a Google and they look very good - what's a ballpark price ex fitting?

tuffer

8,849 posts

267 months

Thursday 21st August 2014
quotequote all
Sway said:
Paul, interesting. Might have to take down the current one and take it apart before I buy one from ao.com!

For the guys that went for Westin, just had a Google and they look very good - what's a ballpark price ex fitting?
I seem to recall it was about £4K including the Lister downdraft element and the external fan but the paperwork is in the loft and the wife has refused to go and get it.

Sway

Original Poster:

26,250 posts

194 months

Friday 22nd August 2014
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Ouch! That's a lot more than I'm hoping to spend.

Took the current one down in the kitchen today, to check out Paul's idea of removing the fan and ducting to an external one.

Is this typical for inside a regular wall mounted fan? If so, looks pretty easy to remove the fan unit and wire through to the external fan. Only thing I need to consider is where the speed controller is, hoping it's within the switch unit instead of the fan unit...

tuffer

8,849 posts

267 months

Friday 22nd August 2014
quotequote all
I think the issue was that for a downdraft you need a lot of suction, hence we have an industrial snow blower on the outside wall :-)

Sway

Original Poster:

26,250 posts

194 months

Friday 22nd August 2014
quotequote all
Ah, fair enough. Might be worth a chat with them to see what a regular canopy system works out at.

Other alternative suggested is a regular inline ducting fan mounted to the garage ceiling, venting through the exterior wall.

Need to check ability to cope with grease etc., as I'm assuming the grease traps aren't 100% effective.

Steve57

2,159 posts

242 months

Friday 22nd August 2014
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i had a few emails from http://www.envirovent.com/home-ventilation/product... and altho i cant see them on the website, they sell hoods too. i can fire the email over if you want showing the types they supply.

V8RX7

26,827 posts

263 months

Thursday 15th September 2016
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Can anyone update their success / failure with this ?

I'm intending to do similar - mount the fan near / in the wall with 6" ducting to hood.


Harry Flashman

19,331 posts

242 months

Thursday 15th September 2016
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I was going to do this, but in the end could not be bothered with the hassle.

I bought a high flow chimney extractor, and the builder will be putting boxing over the chimney bit, filled with rockwool sound insulation. Will not be as quiet, but should do the job.

When I was planning the remote system, I found an external fan (Monsoon) with a high extraction rate, and was going to control it with the switches from a gutted chimney hood. My problem was more the routing for ducting. The kitchen wall is an outside wall that is next to a driveway, and routing things to make it all look nice was hard given the layout of the house.

Sway

Original Poster:

26,250 posts

194 months

Thursday 15th September 2016
quotequote all
We went for an inline ducting fan typically used in commercial hvac applications... Mounted in the loft (we're in a bungalow so just went straight up through the ceiling) on some bungees to isolate any noise from it.

Bought a shiny new extractor fan, gutted it of the internal fan unit, then got my friendly sparky to extend the switch wires through the ducting to the fan.

Ducting was the sound isolation type.

The run is probably 15m, with at least three 90 degree bends. Extracts very well in our open plan kitchen/living/diner, yet is very quiet. Only noise is a slight ability to hear the air whistling through on 'full attack kipper' mode.

Helped massively by next door neighbour who's a hvac engineer and gave me a brand new fan and tons of ducting for free - have no idea if it would be a good value solution otherwise.