November 26, 20214 yr Hi. I live on a quite busy street and would like to install a MVHR unit in the void of a pitched roof which is facing the road. The ducting will be very short ( 1-2 m), taking it out from the Livingroom and supplying the air into the hallway, again with a very short ducting. Does anyone know about how much MVHR units would transfer the noise from outside maybe? I am looking currently at the following unit Blauberg KOMFORT EC D5B 180-E S14 Thank you in advance for your help and thoughts. Cheers Manfred
November 27, 20214 yr Mine is installed in our warm loft, and yes when up in the loft I can hear outdoor street noises more clearly than elsewhere, however it doesn't transmit this noise past the MVHR unit itself so we don't get those noises in bedrooms etc. (Just a bit air movement noise as expected) I've read some people have MVHR unit in a cupboard in a bedroom, I'd be very wary of the noise leakage from that.
November 27, 20214 yr You'll need to install attenuators on the supply and extract ducts. This not only reduces fan noise but also external noise. With semi rigid ducting, insulated exhaust/inlet ducts, I don't see it being an issue. We have our external ducts in place in our new build but no mvhr yet, and I can't hear anything coming in through them.
November 27, 20214 yr Author 4 hours ago, Conor said: You'll need to install attenuators on the supply and extract ducts. This not only reduces fan noise but also external noise. With semi rigid ducting, insulated exhaust/inlet ducts, I don't see it being an issue. We have our external ducts in place in our new build but no mvhr yet, and I can't hear anything coming in through them. Thank you very much for your input. I have not heard about those and will make sure we will get these. Do you live at a busy road too? Just wonder how much street noise they can possible eliminate Cheers Manfred
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