MVHR & MEV Ducting

We have tried and tested a large number of ducting systems and components and found many poorly performing or not good in quality. Just to give you an example: We tested various semi-rigid ducting systems which seem all very alike in their dimensions and product data. However, some turned out to be to rigid and started to crack, some were too light weight and could easily be seared and their inner lining creased up when bent. Others had a coarse and ribbed inner lining, which doubled up the resistance, comnpared to a much better performing product.

Most of the ducting, once installed in a dwelling is inaccessible and will most probably not be changed for the life-span of the building. It does not make sense to install a product that will result in 2-3 times more energy use, cannot be cleaned or falls apart over time.