u/Vivid-Fix5206

Hi All,

We are currently renovating and retrofitting a 1900s dormer house with a 40sq metres extension also now added on. We have decided to go with A2W heat pump and UFH . Our plumber has told us we are unable to do MVHR and can only do a DCV system which is fine. I am just wondering should our house still be as airtight for this DCV system as it would be for MVHR ? Thanks