Pocster Posted January 2, 2022 Share Posted January 2, 2022 It’s not noisy but the variable whirl of the fans is beginning to bug me ( it’s like SWMBO constantly talking ) Decibel in the cupboard 55 . Directly outside with door closed 38 So I assume the sound is leaking from gaps around the door . What’s the best way to insulate against sound along the door opening ? .Also as a 2 door cupboard the gap between each door ??? Link to comment Share on other sites More sharing options...
nod Posted January 2, 2022 Share Posted January 2, 2022 Hope my wife doesn’t read this Noise was her argument 2 That stopped me installing on our last build ? 1 Link to comment Share on other sites More sharing options...
joe90 Posted January 2, 2022 Share Posted January 2, 2022 29 minutes ago, nod said: Hope my wife doesn’t read this Noise was her argument 2 That stopped me installing on our last build ? Mine is installed in the loft, hung from the rafters and it cannot be heard unless on boost ? 1 Link to comment Share on other sites More sharing options...
IanR Posted January 2, 2022 Share Posted January 2, 2022 You could temporarily tape the door gaps up to see if it reduced the noise enough, but I think it's likely the noise will still get though the doors. Have you got enough room between the unit and the door to box the unit in and acoustically insulate? - With the added complication that the boxing needs an opening to change the filters, or needs to be easily removed for servicing the MVHR. Link to comment Share on other sites More sharing options...
Bonner Posted January 2, 2022 Share Posted January 2, 2022 You could try sticking acoustic foam on the inside of the cupboard doors, overlapping the gap. If it works make something more permanent or, if you are like me, leave it until you have finished everything else..... 1 Link to comment Share on other sites More sharing options...
mike2016 Posted January 2, 2022 Share Posted January 2, 2022 Foam egg shells on the back of the door? Has it been cleaned recently? Try moving blankets to dampen sound or more radically a noise cancelling system (can't find any off the shelf though only ones like Quiet Bubble - Silentium). Bulk up door / draught strips as suggested. Reduce fan speed / prevent boosting but that reduces effectiveness. 1 Link to comment Share on other sites More sharing options...
Pocster Posted January 2, 2022 Author Share Posted January 2, 2022 4 hours ago, IanR said: You could temporarily tape the door gaps up to see if it reduced the noise enough, but I think it's likely the noise will still get though the doors. Have you got enough room between the unit and the door to box the unit in and acoustically insulate? - With the added complication that the boxing needs an opening to change the filters, or needs to be easily removed for servicing the MVHR. Maybe . I did think of that . Might try some ‘rape’ as a test but expect to fail …. Link to comment Share on other sites More sharing options...
Pocster Posted January 2, 2022 Author Share Posted January 2, 2022 3 hours ago, Bonner said: ntil you have finished everything else..... Erm - so it never gets done ! ? Link to comment Share on other sites More sharing options...
Roger440 Posted January 2, 2022 Share Posted January 2, 2022 38db is plenty noisey. After my sewage treatrment tank noise issue, i can imagine having anything like this in the house. Am i just sensitive to noise? I assume most are living with some level of background hum? 1 Link to comment Share on other sites More sharing options...
Iceverge Posted January 2, 2022 Share Posted January 2, 2022 28 minutes ago, Roger440 said: 38db is plenty noisey. After my sewage treatrment tank noise issue, i can imagine having anything like this in the house. Am i just sensitive to noise? I assume most are living with some level of background hum? I can hear our sewage treatment plant. It annoys me! Hopefully I'll tackle it this year. I did a post about silencing our MVHR. It was very successful. Wouldn't be without it now. Horizontal rain and 8deg here all day. 700w heater's been on since about 6pm. House is 20 deg. I'll give it the full 2000w beans before go to bed. Link to comment Share on other sites More sharing options...
Adsibob Posted January 3, 2022 Share Posted January 3, 2022 Door seals on the doors, including a dropper seal, should make a difference. Soundstop do a dropper seal for about £60 which looks decent. Lorient make one with a floor plate that provides an even better seal. As will sticking a bunch of insulating material on back of doors. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 Can you stuff the cupboard with clothes, see if that dampens the noise. Rubber is good for this. Link to comment Share on other sites More sharing options...
Pocster Posted January 3, 2022 Author Share Posted January 3, 2022 25 minutes ago, SteamyTea said: Can you stuff the cupboard with clothes, see if that dampens the noise. Rubber is good for this. That your “ mate “ ? Link to comment Share on other sites More sharing options...
Marvin Posted January 3, 2022 Share Posted January 3, 2022 23 hours ago, joe90 said: Mine is installed in the loft, hung from the rafters and it cannot be heard unless on boost ? +1 same location. Same result. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 36 minutes ago, pocster said: That your “ mate “ ? Yes, pretty ain't he. Link to comment Share on other sites More sharing options...
saveasteading Posted January 3, 2022 Share Posted January 3, 2022 I would first try a blanket over and around the noisy box. If that works at all, make it prettier and use some soft absorbent material and some dense. Of course check that this won't set it on fire/close off vents etc. Perhaps a solid box around it, lined with foam and stuffed with rockwool. Plus check whether the noise is coming from vibration (which can be fixed) or inbuilt in the mechanism. 1 Link to comment Share on other sites More sharing options...
ProDave Posted January 3, 2022 Share Posted January 3, 2022 I am very sensitive to noise, but have no issues with ours (Mitsubishi) located in the plant room next to the main bedroom. When the MVHR is on boost, you hear some noise from the vents, but you don't run it on boost when sleeping. Ours only has manual control so you push a button to get a timed boost when showering. You mention the fan speed changing? could the issue being it is on some form of automatic control e.g. humidity and that is boosting the speed more often than you would like? I would not personally be in a hurry to have ours on automatic control. Link to comment Share on other sites More sharing options...
Marvin Posted January 3, 2022 Share Posted January 3, 2022 1 hour ago, SteamyTea said: Yes, pretty ain't he. Not sure that's rubber.. looks like PVC to me, unless its well oiled Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 33 minutes ago, Marvin said: well oiled Whale Oil Beef Hooked. 1 Link to comment Share on other sites More sharing options...
Pocster Posted January 3, 2022 Author Share Posted January 3, 2022 (edited) 1 hour ago, ProDave said: I am very sensitive to noise, but have no issues with ours (Mitsubishi) located in the plant room next to the main bedroom. When the MVHR is on boost, you hear some noise from the vents, but you don't run it on boost when sleeping. Ours only has manual control so you push a button to get a timed boost when showering. You mention the fan speed changing? could the issue being it is on some form of automatic control e.g. humidity and that is boosting the speed more often than you would like? I would not personally be in a hurry to have ours on automatic control. Yeah could be . it reacts really quickly to humidity I.e you have a shower and within 5 seconds it boosts automatically . It’s on ‘low’ at night ( when I hear it most of course ) - the tone does change so assume it’s reacting to humidity. I did see that you can configure low/medium/high to whatever you want - but I’m reluctant to lower it to reduce noise and it’s ability to work correctly. Originally it wasn’t planned to be in the mistresses bedroom , but you know … things change . The biggest “ I’ve got an mvhr “ thing I noticed is zero condensation in bathroom/ensuite after a shower . The air is clear of that humid mist you usually get . Air in house always feels fresh ( if I turn it off for 12 hours , go out , come back , even mistress and SWMBO notice ) . I will try sealing tape first . If that knocks 10db off I think that would be great . Edited January 3, 2022 by pocster Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 50 minutes ago, pocster said: it reacts really quickly to humidity You can design a switch that looks at the rate of change, rather than the absolute change. Link to comment Share on other sites More sharing options...
Pocster Posted January 3, 2022 Author Share Posted January 3, 2022 9 minutes ago, SteamyTea said: You can design a switch that looks at the rate of change, rather than the absolute change. Nah Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 1 minute ago, pocster said: Nah Open the window then. Link to comment Share on other sites More sharing options...
Pocster Posted January 3, 2022 Author Share Posted January 3, 2022 Just now, SteamyTea said: Open the window then. Don’t need to have mvhr . The switch in it may already function on rate of change rather than absolute. I have multi sensors in each room which also measure humidity linked to my HA So I can do whatever I want , so there ! Link to comment Share on other sites More sharing options...
SteamyTea Posted January 3, 2022 Share Posted January 3, 2022 3 minutes ago, pocster said: I can do whatever I want Except sleep at night. 2 Link to comment Share on other sites More sharing options...
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