CalvinHobbes Posted April 26 Share Posted April 26 I explained to him we really didn't want a ventilated cooker hood so he needs to upgrade what he had planned - fair wnough. "Have u an idea the litres per second that it requires For a normal kitchen it's 13 l/s min ! again this can go up depending on floor area" Anyone know? There are relatively few passive or near passive standard houses here. It's a learning curve for many, even very good people. Link to comment Share on other sites More sharing options...
Kelvin Posted April 26 Share Posted April 26 (edited) We have a recirculating hob and a MVHR duct above hob (well just behind) The kitchen extract terminal is set to 52m3/h (roughly the same as you quote above) The hob venting unit has a min max air flow of 154m3/h to 500m3/h with a max boost of 622m3/h. Edited April 26 by Kelvin 1 Link to comment Share on other sites More sharing options...
JohnMo Posted April 26 Share Posted April 26 1 hour ago, CalvinHobbes said: For a normal kitchen it's 13 l/s min ! again this can go up depending on floor area" Not sure why you think you need anything special. Our was set to 13 l/s with 16 l/S boost with a recirculating cooker hood. But overall we found we were over ventilating the whole house, so it's now closer to 10 l/s for the whole kitchen diner - No issues a year later and very rarely ever use boost. 1 Link to comment Share on other sites More sharing options...
Conor Posted April 26 Share Posted April 26 (edited) It's 13lps which is easily what any correctly sized MVHR can achieve. We just ran double ducts to the vent. Edited April 26 by Conor 1 Link to comment Share on other sites More sharing options...
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