Hi, we are remodelling a dormer bungalow by adding a substantial full width single storey extension at the rear of the property and creating an entirely new first floor / roof over the existing structure. I would like to have wet UFH throughout the house and also MVHR. I am looking into partially DIYing the installation of both systems in order to save money. Originally we were planning on having an ASHP but we will not make the March 2022 RHI deadline and so instead we will simply use our existing combi boiler which is not very old.
I will start threads in the relevant sections of the forum.