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DIY Silent Ducted Rangehood

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Created by knot board > 9 months ago, 30 Apr 2020
knot board
QLD, 1241 posts
30 Apr 2020 10:57AM
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Off topic but no more so than most conversations here....

With all this home time the misso is up my ribs about finishing the kitchen - she cooks some pungent tucker at times which demands a powerful rangehood.

There's no point in recirculating these aromas so it needs to be an externally ducted system. And I hate rangehood noise so it has to be very quiet. The only commercially available product that fits the brief is made by Schweigen and costs $3000 supplied only - for all purposes it looks like a normal rangehood, nothing fancy other than the externally mounted extraction fan.

What's stopping me buying:
A standard Canopy Rangehood - $300
Some flexible Ducting ~ $20
And a through wall exhaust fan ~ $300

Then just remove the standard extraction fan and re-route the control wiring to the wall mounted extraction fan?

Anyone done similar or want to talk me out of it?

Yours in home improvements,
Knot Board

FormulaNova
WA, 14734 posts
30 Apr 2020 9:25AM
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knot board said..
Off topic but no more so than most conversations here....

With all this home time the misso is up my ribs about finishing the kitchen - she cooks some pungent tucker at times which demands a powerful rangehood.

There's no point in recirculating these aromas so it needs to be an externally ducted system. And I hate rangehood noise so it has to be very quiet. The only commercially available product that fits the brief is made by Schweigen and costs $3000 supplied only - for all purposes it looks like a normal rangehood, nothing fancy other than the externally mounted extraction fan.

What's stopping me buying:
A standard Canopy Rangehood - $300
Some flexible Ducting ~ $20
And a through wall exhaust fan ~ $300

Then just remove the standard extraction fan and re-route the control wiring to the wall mounted extraction fan?

Anyone done similar or want to talk me out of it?

Yours in home improvements,
Knot Board


Sounds like a good idea to me. You may as well just put a switch near the stove and run the extraction fan from that and not worry about tinkering with the rangehood.

You can get fan controllers that might allow you to vary the speed of the extraction fan, but I haven't tried it.

I do have a few extraction fans in the ceiling to pull air from one room to another, and its hardly rocket science. Some are centrifugal fans and the other are whatever the other type are called. I found that 'hydroponic suppliers' seemed to have a huge range of extraction fans for some reason...

Lots of rangehoods are ridiculously noisy and way overpowered, so I think your idea is good. make sure the filters are in place of course.

knot board
QLD, 1241 posts
30 Apr 2020 11:52AM
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Scratch all that - I just got put onto their factory second site and picked a discontinued model for $999 (was $4,289)

WINNING !!!

warwickl
NSW, 2224 posts
30 Apr 2020 4:36PM
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In a previous home I installed a grill over the cook top and ducted to a low cost external wall fitted exhaust fan. All noise outside then I could hear the TV.
Solution keep the noise as far away aspossible.

Crusoe
QLD, 1195 posts
30 Apr 2020 5:23PM
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Just remember the grease and crud will build up in the duct and fan motor/blades. May need cleaning at some stage and could potentially be a fire hazard.

What the f34K would I know, I'm only an electrician.

lotofwind
NSW, 6451 posts
30 Apr 2020 5:50PM
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^^^^^Creditable advice is not allowed on seabreeze.

knot board
QLD, 1241 posts
30 Apr 2020 7:12PM
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Crusoe said..
Just remember the grease and crud will build up in the duct and fan motor/blades. May need cleaning at some stage and could potentially be a fire hazard.

What the f34K would I know, I'm only an electrician.


Me too , albeit at distribution voltages. Filters will need routine maintenance as with all similar systems but me thinks fire hazard is low a probability. Cheers

Tonz
512 posts
30 Apr 2020 5:43PM
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I have been cleaning out 3 commercial rangehood filters, that have not been touched in 5 years tried all sorts of commercial cleaners, was on point of tossing and buying new ones, but after soaking in CokaCola for 3 days then used mate high pressure hot water cleaner with added detergent viola look like new.

cauncy
WA, 8407 posts
30 Apr 2020 9:06PM
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Built a spekky joint for myself and was really keen on some hi tech extraction but wanted minimalist appearance as the house is ultra modern and minimalist, long story short we ran out of coin at critical stages, so couldn't afford 3/ 4000 $$$bench top system from Europe
Anyhows came up with this idea, 250 mm ceramic bearing exstractors in brushed stainless finish fully ducked to Louve vent outside under waves, wired into a switchable dimmer control, which gives super quiet
Super strong controlled suction
For under $200 , works a Furkin treat




Crusoe
QLD, 1195 posts
1 May 2020 5:00AM
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knot board said..

Crusoe said..
Just remember the grease and crud will build up in the duct and fan motor/blades. May need cleaning at some stage and could potentially be a fire hazard.

What the f34K would I know, I'm only an electrician.



Me too , albeit at distribution voltages. Filters will need routine maintenance as with all similar systems but me thinks fire hazard is low a probability. Cheers


Proper Kitchen extraction fans will have enclosed motor windings where as some (toilet) Exhaust fans have open windings hence potential fuel build up where the motor is hottest.

Crusoe
QLD, 1195 posts
1 May 2020 5:00AM
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Select to expand quote
knot board said..

Crusoe said..
Just remember the grease and crud will build up in the duct and fan motor/blades. May need cleaning at some stage and could potentially be a fire hazard.

What the f34K would I know, I'm only an electrician.



Me too , albeit at distribution voltages. Filters will need routine maintenance as with all similar systems but me thinks fire hazard is low a probability. Cheers


Proper Kitchen extraction fans will have enclosed motor windings where as some (toilet) Exhaust fans have open windings hence potential fuel build up where the motor is hottest.

Hardcarve1
QLD, 548 posts
1 May 2020 5:01AM
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What Cauncy has done is bang for buck the way to go.
In my job I specify commercial extraction systems for commercial kitchen I design, the domestic range hoods no matter what the cost are not going to do the job you wish for. The two most important things you need for the hood to work are the capture velocity under the hood and the convective heat rising from the heat source. No domestic and a lot of commercial extraction hoods just cannot achieve anywhere near the amount of capture velocity to allow for the removal of the air below a hood. If you have an island cooking station then there is no way any domestic hood has the remotest chance of doing any good because of the 4 open sides. I just built my house a few years ago and had the discussion with my wife and I convinced here to buy better equipment and just install ceiling extraction fans ducted to the outside.
The best domestic extraction hood available is called a lid.

FormulaNova
WA, 14734 posts
1 May 2020 7:28AM
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What about those cooktops that have those ducts in the cooktop itself? Surely they can't work well as you would imagine most of the vapors have already risen up too far to then be drawn back down to the extraction system.

Buster fin
WA, 2577 posts
1 May 2020 8:00AM
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I believe you Cauncy, I've just always thought it stupid that the vents aren't at the high point of the ceiling, as in the photo.

Windpasser
WA, 499 posts
2 May 2020 12:04PM
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I am disgusted by the state of Cauncy's kitchen.

How can you even live with only two tiny ****ty ovens?

Can't even see a fridge, poor lighting and the TV on the cupboard is tiny.

Don't even get me started on the Covid-19 all over the dimmer switch.

Just kidding. Nice setup


Mark _australia
WA, 22423 posts
2 May 2020 1:03PM
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I like the TV screen in the cupboard doors Mick

Sega Rally?

FormulaNova
WA, 14734 posts
2 May 2020 5:31PM
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Mark _australia said..
I like the TV screen in the cupboard doors Mick

Sega Rally?


The reflection of a TV?

cauncy
WA, 8407 posts
2 May 2020 6:29PM
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Mark _australia said..
I like the TV screen in the cupboard doors Mick

Sega Rally?


Usually pornhub



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"DIY Silent Ducted Rangehood" started by knot board