Tue, 09 Jun 2026 09:05:08 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140528#Comment_140528 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140528#Comment_140528 Sat, 24 Mar 2012 08:06:39 +0000 Pugliese
Spoke to several of the MVHR suppliers at Ecobuild and could not get a satisfactory answer.

Common sense tells me to keep the two seperate but is there anyone out there who manufactures what is effectively a stand alone MVHR unit which is a kitchen extractor that has its own grease filters etc?

thanks]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140530#Comment_140530 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140530#Comment_140530 Sat, 24 Mar 2012 08:19:41 +0000 SteamyTea The cooker hood should trap the grease, so a better one of these is a good idea, then find a single room MVHR that can be easily and quickly cleaned. See if any use washable filters (assuming that there is a charcoal filter in the hood, not that it is really necessary of you are throwing the fumes outside).

'KISS' tends to work every time.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140533#Comment_140533 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140533#Comment_140533 Sat, 24 Mar 2012 09:01:46 +0000 Sprocket
There are MVHR boxes that are designed specifically to go into standard sized kitchen units above a cooker and to drive extract etc. We looked at some when we started our project (eg from VentAxia, there was a HR205 "MVHR Unit Incorporating cookerhood" that I see I have data for).

Maybe it would simplify the ducting and vents install but we decided not to do it and went for a separate extract for the cooker hood. We made a small loft space for a separate (and larger) MVHR with summer bypass instead.

I'm glad we kept them separate.
We have a separate electric duct closer to install in the extract pipe when we get around to it but haven't done that yet.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140534#Comment_140534 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140534#Comment_140534 Sat, 24 Mar 2012 09:10:17 +0000 joe90 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140537#Comment_140537 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140537#Comment_140537 Sat, 24 Mar 2012 09:36:19 +0000 SteamyTea The biggest issue is routine maintenance with anything in a kitchen. It really is a harsh environment.
Maybe I should call in at Pall who make air filtration systems for the aviation industry, they have a design that works like a bagless vacuum cleaner (was never a new idea and does not justify the creation of a billionaire). My air filter experience was for larger particulates than grease smoke, so a bit out of my experience. Now if you want the dust from a Cornish mine cleaned out, I am your man ]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140552#Comment_140552 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140552#Comment_140552 Sat, 24 Mar 2012 11:01:49 +0000 Pugliese
Sprocket - Wher did you get the duct closer from?

ST - Pall - an interesting idea, my son worked there for his year in industry as part of his engineering degree - I will see if he has any smart ideas]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140568#Comment_140568 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140568#Comment_140568 Sat, 24 Mar 2012 13:55:37 +0000 SteamyTea Posted By: PuglieseI will see if he has any smart ideas
Excellent, post them up here ]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140581#Comment_140581 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140581#Comment_140581 Sat, 24 Mar 2012 18:49:23 +0000 tony https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140589#Comment_140589 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140589#Comment_140589 Sat, 24 Mar 2012 21:34:54 +0000 Sprocket
I haven't looked in the box since it arrived but if I recall correctly it was going to be an "airtight duct damper" from Rega - the circular one.

Of course, it remains to be seen what will happen when it meets the "grease and clagg" :-/
This cooker will only see fairly light use so hopefully it will last a while anyway.
I'll make a point to install it somewhere accessible in case it jams.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140591#Comment_140591 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140591#Comment_140591 Sat, 24 Mar 2012 21:42:58 +0000 SteamyTea https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140620#Comment_140620 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140620#Comment_140620 Sun, 25 Mar 2012 10:08:46 +0100 GaryB
The one exception was an 15 unit social housing apartment development where we used the Nuaire CookerXbox, which I believe was on a previous GBF thread. It worked OK but is noisy for an apartment set-up with the kitchen in the same space as the living room and the configuration means you can't add a silencer. I suspect the tenants will turn the unit off and on as required which sort of defeats the purpose of MVHR.

Also, they are not as good on the SAP Q rating as a conventional MVHR system.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140636#Comment_140636 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140636#Comment_140636 Sun, 25 Mar 2012 16:35:49 +0100 RobinB
We have MHHRV and a separate recirulating cooker hood with washable filters. The filters can be washed by hand or in a dishwasher.

The cooker hood "pulls" cooking smells up over head (and nose) height and the MHRV takes it from there. If cooking fish, cabbage etc I'd turn the MHRV up before I started.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140682#Comment_140682 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140682#Comment_140682 Mon, 26 Mar 2012 16:38:47 +0100 fostertom https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140690#Comment_140690 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140690#Comment_140690 Mon, 26 Mar 2012 17:40:13 +0100 chippyclaus https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140693#Comment_140693 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140693#Comment_140693 Mon, 26 Mar 2012 19:25:26 +0100 docmartin When I went on an ITHO installation course, a lot of the concerns expressed were about tenants in housing associations etc. The majority attending were there on behalf of housing associations; only one other person was fitting MVHR on a small scale. It is also self evident that the large contracts are being installed by major housebuilders. For individual clients I feel it would be quite reasonable to leave the choice to them with suitable explanation.
Is a hopelessly neglected grease filter on a recirculation model better than a POSSIBLE slow clogging of a heat exchanger? Surely fats will accumulate mainly in the proximal extract ducts if not trapped by the s/s filters in the hood? The only other option is the direct extraction to external with the much greater noise level which I was keen to avoid.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140694#Comment_140694 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140694#Comment_140694 Mon, 26 Mar 2012 19:39:35 +0100 docmartin https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140713#Comment_140713 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140713#Comment_140713 Mon, 26 Mar 2012 21:22:17 +0100 RobinB Posted By: docmartinIs a hopelessly neglected grease filter on a recirculation model better than a POSSIBLE slow clogging of a heat exchanger?

Not sure if its better but just a lot cheaper and easier to sort out.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140725#Comment_140725 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140725#Comment_140725 Mon, 26 Mar 2012 22:21:52 +0100 wookey
I have no knowledge of how well it works or how good an idea it is.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140726#Comment_140726 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140726#Comment_140726 Mon, 26 Mar 2012 22:32:17 +0100 john_connett Posted By: SteamyTeaI agree Joe, except, they don't for very long. I used to have a cooker hood and it was only good for hitting my head on (actually not true as I am pretty stumpy, but a normal person might).
The biggest issue is routine maintenance with anything in a kitchen. It really is a harsh environment.
Maybe I should call in at Pall who make air filtration systems for the aviation industry, they have a design that works like a bagless vacuum cleaner (was never a new idea and does not justify the creation of a billionaire). My air filter experience was for larger particulates than grease smoke, so a bit out of my experience. Now if you want the dust from a Cornish mine cleaned out, I am your manhttps:///forum114/extensions/Vanillacons/smilies/standard/wink.gif" alt="" title="" >

I have a Berbel cooker hood (http://www.berbel.co.uk) which I suspect works in the way you propose using aerodynamics for grease separation rather than a filter. There is a big activated carbon filter which copes well with any smells from my cooking. It is also linked to the boost switch on the MVHR so that it is boosted when the cooker hood fan is in operation. Berbel hoods are beautifully engineered and correspondingly expensive!]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140727#Comment_140727 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140727#Comment_140727 Mon, 26 Mar 2012 22:34:29 +0100 SteamyTea Posted By: john_connettBerbel are beautifully engineered and correspondingly expensive!

Pull it apart and post some pictures up, saves a thousand words ]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140742#Comment_140742 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140742#Comment_140742 Tue, 27 Mar 2012 06:19:36 +0100 Chris P Bacon
http://www.berbel.de/int/the-advantages/new-technology.html ]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140745#Comment_140745 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=140745#Comment_140745 Tue, 27 Mar 2012 07:32:49 +0100 jms452
Stainless and carbon filters deal with grease and MVHR deals with moisture.

Additionally you have about 10m of rigid ducting and the fine fleece filters in the MVHR before the heat exchanger.

The room extract vent doesn't seem at all greasy after one winter so I have no worries about the heat exchanger.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=144866#Comment_144866 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8848&Focus=144866#Comment_144866 Fri, 04 May 2012 09:54:44 +0100 Jimbo7
http://www.berbel.de/int/the-products/accessories/wall-box-frame.html

Or know of similar alternatives that could be used with any kitchen extractor hood?

Jim]]>