We are one of very few timber frame companies that also provide market leading passivhaus PAUL MVHR system as part of our package (if it is required). We use Lindab rigid steel ductwork, with all the duct routes precut within the timber frame so they are hidden with walls and / or floors. The system is design on 3D CAD software, all modelled to ensure air flow in sufficient within each room, and also acoustically modelled so that there is no issues with noise in the system.