maninsheds

Thanks, I was a bit concerned about extract being so close to hob. (grease being my main concern) Anyone experience of using grease filters for an extract point close to a hob. My concern with doing as you say and using the dining area point as the extract is that the air flow might just do the below, and not properly ventilate the areas of the kitchen where the moisture is being created. But that might just be a theoretical concern?

Hi All I'd appreciate a critique of my MVHR design before I start making holes in things. This is a retrofit to a 1850s cottage with later extensions. Major refurb and retrofit 6 years ago, but didn't fit MVHR at the time (didn't back myself to get the airtightness low enough at the time, but turns out its just below 1 so its very under ventilated at the moment) Already bought a Vent Axia Sentinel B. Thinking it will be a radial system mainly in 75mm semi rigid, but there are few places where i will switch to round galv or rectangular duct due to aesthetics/ space constraints. Particular queries are: 1) Lots of constraints to duct routes as you'd expect, so some of the vent locations are none ideal, but I've done my best. Any heads up on those that may be problematic would be great. 2) Sense check of my ventilation rate calcs would be good. From what I've worked out, in order to supply the necessary air, I'm going to meet the extract rates anyway so theoretically wouldn't need a boost mode for part F. I'm guessing this is not unusual though? Will add a boost switches / humidistats in bathroom and kitchen anyway. 3) Duct speeds all look ok and calculated correctly? 4) Is the Vent Axia B suitably sized? Not to late to change my mind if there is anything I've missed. Also not yet done my research on silencers etc. Sure there is stuff on here and elsewhere I can read up on, but any quick tips on what I should incorporate if anything would be great. Flow calcs etc here: https://docs.google.com/spreadsheets/d/1Y-T45Mv2AB6M5k68rblZWlrH_XpvLbt0rz_p5l3Jelc/edit?usp=sharing Planned Layout here: MVHR Layout v2.pdf Thanks in advance Dan

Hi All New as a member but have benefitted from the forum many times over the years. 6 years ago did an extension and retrofit project on my 1850 stone cottage. Build been finished a few years now but need to go back and fit MVHR (should have done at the time!) Unfinished timelapse video here: