Kitchen chimney hood/extractor

[Mudball]

Recently got a new kitchen. We were told the extractor was the bees knees - quiet and powerful. However a month on and I don’t think it is doing its job. If we do fish or curries, the whole house smells.
So I put some ribbons on the top vents and lo and behold, it looks like it is dumping a lot of air into the room itself. It is connected to the outside vent, and not a recirculating one.
One photo is before and the other is after I switch on the extractor.. it feels like a wind tunnel to me

Expert advice..

 

[Bunkermagnet]

IF it is connect to the ducting, it isnt connected fully.
If it's not ducted, it needs a charcoal cartridge.
What is the ducting diameter requirements, as all to often the ducting hose and/or hole is only 4 inch and the minimum required is 5 in.
That would be the obvious cause of more noise and less efficiency.....especially if connect correctly to the ducting.

 

[Fade and Die]

Is any air coming out of the external vent? You need to drop the top bit of the chimney down and see what’s going on with the ducting, it’s pretty easy to do.
When we had our kitchen fitted I noticed the fitter had installed plastic flexible stuff, when he went home I replaced it with flexible metal.
The plastic stuff can split too easily, also when pushed through the hole it can go flat.

 

[Beezerk]

Aaah the classic having the intake hole larger than the outake. Gaffer tape those side vents up, just for testing purposes obviously

 

[Mudball]

Aaah the classic having the intake hole larger than the outake. Gaffer tape those side vents up, just for testing purposes obviously

The outer exhaust and ducting was done by my builder while the kitchen fitter fitted it to the duct. It was a couple of months beteeen the events

I remember the kitchen guys specifying a 150mm duct, and when they came to fit it, they realised the builder was 200 pr 250.. so there was dash to screwfix to get a step down coupler. I hope the leak is not in that space.

@fade… are the top screws holding the top cover or holding up the whole extractor??

 

[Fade and Die]

The outer exhaust and ducting was done by my builder while the kitchen fitter fitted it to the duct. It was a couple of months beteeen the events

I remember the kitchen guys specifying a 150mm duct, and when they came to fit it, they realised the builder was 200 pr 250.. so there was dash to screwfix to get a step down coupler. I hope the leak is not in that space.

@fade… are the top screws holding the top cover or holding up the whole extractor??

If you take out the top 2 screws then the upper section of the chimney should slide down.

 

[Mudball]

If you take out the top 2 screws then the upper section of the chimney should slide down.

That’s my morning gone

 

[Mel Smooth]

Get the kitchen fitters back - they haven't done there job correctly.

 

[Mandofred]

We are in the process of ordering a new kitchen. I've never really seen the point of the recirculating systems.....I know they work a bit, but if possible I'd really like the extractor to extract the smelly and a bit greasy air to the outside. My wife is trying to decide whether to leave the sink as in the picture or move it over by the washing machine. A wall is coming out where the breakfast chairs are located. A little concerned that the drain on the sink has to go all the way over to where the washing machine is and we are thinking that having the washing machine/dish washer/sink might just work better if it was all over on that side.

 

[Neilds]

We are in the process of ordering a new kitchen. I've never really seen the point of the recirculating systems.....I know they work a bit, but if possible I'd really like the extractor to extract the smelly and a bit greasy air to the outside. My wife is trying to decide whether to leave the sink as in the picture or move it over by the washing machine. A wall is coming out where the breakfast chairs are located. A little concerned that the drain on the sink has to go all the way over to where the washing machine is and we are thinking that having the washing machine/dish washer/sink might just work better if it was all over on that side.
View attachment 55165

Personally I would move the sink anywhere away from the breakfast bar. Wouldn’t want to be sat staring at a sink of washing up, etc.
Also, where is the fridge? You need to think about the triangle of cooker, sink, fridge for ease of preparing meals.

 

[Tashyboy]

Shifting the sink would be the first thing I would do. It would be between the washing machine and hob. The you would then get a lot more usage out of the breakfast bar area.

 

[Mandofred]

The "current plan" is to move the sink over and probably put small cupboards under the extra wide counter top where the chairs are. We won't eat there anyway. Fridge is on the left where you can just see the edge of something.

 

[Mudball]

We are in the process of ordering a new kitchen. I've never really seen the point of the recirculating systems.....I know they work a bit, but if possible I'd really like the extractor to extract the smelly and a bit greasy air to the outside. My wife is trying to decide whether to leave the sink as in the picture or move it over by the washing machine. A wall is coming out where the breakfast chairs are located. A little concerned that the drain on the sink has to go all the way over to where the washing machine is and we are thinking that having the washing machine/dish washer/sink might just work better if it was all over on that side.
View attachment 55165

I get the logic of the recirculating one but it is a difficult one. While we were in the market, the other type is the extractor on the worktop based.. where you have to duct under the floor and out. I think it is a stylish idea that will work if you mostly make salads. Our household is very experimental. So the day the Chinese Wok comes out, we will have to evacuate the house.

On the subject of the your design. It is personal taste and how you work in a kitchen. We are lucky to fit an island rather than just a breakfast bar. We had big debate over either the hob or the sink going onto the island. Then we visited a friend in new build who has a sink in their island. As @Neilds said, we had to look at dirty dishes, so the hosts had to constantly clean it. We would sit at the bar and drink tea, cup in the sink, she would have to wash it straight away, and that would splash everywhere (as the platform was narrow). So that settled our debate and we put the hob on the island. The other advantage we had is that the Mrs now faces the room rather than the wall when she cooks so still have conversation with anyone or watch TV or tell me off.

My 2c on your design.. go with what works for you. If i can be tempted, then swap the sink and washing machine. A dishwasher can go next to the sink (most common option). If you get an integrated washing machine, then it will be hidden under the breakfast bar AND you can use both sides of the bar. You will be surprised how much that bar gets used. You should also achieve it with the same plumbing - infact one less hot feed to the breakfast area

 

[larmen]

I get the logic of the recirculating one but it is a difficult one. While we were in the market, the other type is the extractor on the worktop based.. where you have to duct under the floor and out. I think it is a stylish idea that will work if you mostly make salads. Our household is very experimental. So the day the Chinese Wok comes out, we will have to evacuate the house.

My mrs. is in the kitchen game, high end stuff, 5 digits minimum, 6 digits not that unusual, even ‘boats’. All clients want them, all designers want them, all sales people rave about them.
All technical people try to change the others away from them. No one working there has them.

 

[Mandofred]

We thought temporarily about putting the hob over on the peninsula, but with possibly adding an extractor of some nature...and just the issue of food splatter killed that pretty quick. Did a little research on the downdraft extractors....nope. No idea what a "boat" is....other than the floating variety.

I think (until my wife changes her mind) that the sink will be to the left of the hob with washing machine and dishwasher near it. We currently have our washing machine in the garage....which I tried to convince my wife we should do with this other house....she didn't want to do that since you would be exposed to the weather for 5 feet and then down the garage another 20ft or so. I don't blame her....makes it easier in the kitchen. We are still trying to figure a way to put it in the upstairs bathroom, but I think it's likely a little too tight.....and with my luck when it was going it would vibrate the floor over our heads downstairs.

 

[jim8flog]

I am not a kitchen designer but would think seriously about the having the sink next to the hob, the drainer yes, think about the overhang of pot handles. Having the sink closer to the sink makes safety sense as hot water filled pots are moving over the drainer and not over the floor and hot pots can be put down on the drainer.

 

[Bunkermagnet]

All too many have cooker hoods that either are ducted but too far in ducting length, or use ducting that is too small in diameter.
Cooker hoods works best when on an outside wall and venting straight out and at the required diameter.

 

[Mandofred]

I am not a kitchen designer but would think seriously about the having the sink next to the hob, the drainer yes, think about the overhang of pot handles. Having the sink closer to the sink makes safety sense as hot water filled pots are moving over the drainer and not over the floor and hot pots can be put down on the drainer.

Gotta admit....wondering how having a sink closer to the sink is a safety issue.....and impossible?

If....what we are planning....the sink will be well away from the hob, with the drainer on the other side of the sink.

 

[Mandofred]

All too many have cooker hoods that either are ducted but too far in ducting length, or use ducting that is too small in diameter.
Cooker hoods works best when on an outside wall and venting straight out and at the required diameter.

If we do an extractor....it will be straight out to the air.

 

[Mudball]

So took @Neilds advice and popped out the screws and lo and behold the flex hose from the flat roof has completely detached from the extractor motor. It was held there by duct tape.




So i have now secured it with a metal hose connector. Now the air is no longer coming thru the side vents.


However, got on the flat roof and ther is only a little air coming out thru the pipe. Now i am even more worried. I am assuming there is a block somewhere or one of the builders probably put something into the pipe ..

That is adventure for tomorrow