Romana

I see, definitely food for thought. Thanks for sharing!

Why is a good question - to me it sound like the answer lies in the "Terra Therma" using their own chip boards and coming to do the cuts themselves - my guess would be there's a level of main contractor charging for sub contractors, both of which will add profit margins to their quotes.

Thank you for your response. Is the fan coil system even more complex than UFH? Does it not take up the ceiling height for the duct system? It does sound fantastic, being able to use it for both heating and cooling.

Hello, We have received this heating and zone plan from a renewables company that we would very much like to use for all UFH, ASHP and PV panels + batteries. Our house will be a combo of masonry grund floor (existing) with added external and floor insulation and first story extension + habitable attic space in timber frame. Wet screeded UFH proposed downstairs, "wood 22 system" proposed for upstairs. The ground floor quote came to what we were expecting but the upstairs is more than double that per m2 and we would ideally find ways to reduce that. I do like to be warm - I have read some people here leave their bedroom at 18 degrees. I WOULD DIE. We also have two toddlers so they spend a lot of time playing in their rooms and need them to be warm enough for small children. Here are the diagrams of proposed heating zones. Does anyone have suggestions on whether these could be simplified in order to bring that first story cost a little bit down? No UFH planned for the attic space. Thank you!